From be1c7e50e1e8809ea56f2c9d472eccd8ffd73a97 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 04:57:58 +0200 Subject: Adding upstream version 1.44.3. Signed-off-by: Daniel Baumann --- daemon/main.c | 2286 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2286 insertions(+) create mode 100644 daemon/main.c (limited to 'daemon/main.c') diff --git a/daemon/main.c b/daemon/main.c new file mode 100644 index 00000000..3e1fda96 --- /dev/null +++ b/daemon/main.c @@ -0,0 +1,2286 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "common.h" +#include "buildinfo.h" +#include "static_threads.h" + +#include "database/engine/page_test.h" + +#if defined(ENV32BIT) +#warning COMPILING 32BIT NETDATA +#endif + +bool unittest_running = false; +int netdata_zero_metrics_enabled; +int netdata_anonymous_statistics_enabled; + +int libuv_worker_threads = MIN_LIBUV_WORKER_THREADS; +bool ieee754_doubles = false; +time_t netdata_start_time = 0; +struct netdata_static_thread *static_threads; + +struct config netdata_config = { + .first_section = NULL, + .last_section = NULL, + .mutex = NETDATA_MUTEX_INITIALIZER, + .index = { + .avl_tree = { + .root = NULL, + .compar = appconfig_section_compare + }, + .rwlock = AVL_LOCK_INITIALIZER + } +}; + +typedef struct service_thread { + pid_t tid; + SERVICE_THREAD_TYPE type; + SERVICE_TYPE services; + char name[NETDATA_THREAD_NAME_MAX + 1]; + bool stop_immediately; + bool cancelled; + + union { + netdata_thread_t netdata_thread; + uv_thread_t uv_thread; + }; + + force_quit_t force_quit_callback; + request_quit_t request_quit_callback; + void *data; +} SERVICE_THREAD; + +struct service_globals { + SPINLOCK lock; + Pvoid_t pid_judy; +} service_globals = { + .pid_judy = NULL, +}; + +SERVICE_THREAD *service_register(SERVICE_THREAD_TYPE thread_type, request_quit_t request_quit_callback, force_quit_t force_quit_callback, void *data, bool update __maybe_unused) { + SERVICE_THREAD *sth = NULL; + pid_t tid = gettid(); + + spinlock_lock(&service_globals.lock); + Pvoid_t *PValue = JudyLIns(&service_globals.pid_judy, tid, PJE0); + if(!*PValue) { + sth = callocz(1, sizeof(SERVICE_THREAD)); + sth->tid = tid; + sth->type = thread_type; + sth->request_quit_callback = request_quit_callback; + sth->force_quit_callback = force_quit_callback; + sth->data = data; + os_thread_get_current_name_np(sth->name); + *PValue = sth; + + switch(thread_type) { + default: + case SERVICE_THREAD_TYPE_NETDATA: + sth->netdata_thread = netdata_thread_self(); + break; + + case SERVICE_THREAD_TYPE_EVENT_LOOP: + case SERVICE_THREAD_TYPE_LIBUV: + sth->uv_thread = uv_thread_self(); + break; + } + } + else { + sth = *PValue; + } + spinlock_unlock(&service_globals.lock); + + return sth; +} + +void service_exits(void) { + pid_t tid = gettid(); + + spinlock_lock(&service_globals.lock); + Pvoid_t *PValue = JudyLGet(service_globals.pid_judy, tid, PJE0); + if(PValue) { + freez(*PValue); + JudyLDel(&service_globals.pid_judy, tid, PJE0); + } + spinlock_unlock(&service_globals.lock); +} + +bool service_running(SERVICE_TYPE service) { + static __thread SERVICE_THREAD *sth = NULL; + + if(unlikely(!sth)) + sth = service_register(SERVICE_THREAD_TYPE_NETDATA, NULL, NULL, NULL, false); + + sth->services |= service; + + return !(sth->stop_immediately || netdata_exit); +} + +void service_signal_exit(SERVICE_TYPE service) { + spinlock_lock(&service_globals.lock); + + Pvoid_t *PValue; + Word_t tid = 0; + bool first = true; + while((PValue = JudyLFirstThenNext(service_globals.pid_judy, &tid, &first))) { + SERVICE_THREAD *sth = *PValue; + + if((sth->services & service)) { + sth->stop_immediately = true; + + if(sth->request_quit_callback) { + spinlock_unlock(&service_globals.lock); + sth->request_quit_callback(sth->data); + spinlock_lock(&service_globals.lock); + } + } + } + + spinlock_unlock(&service_globals.lock); +} + +static void service_to_buffer(BUFFER *wb, SERVICE_TYPE service) { + if(service & SERVICE_MAINTENANCE) + buffer_strcat(wb, "MAINTENANCE "); + if(service & SERVICE_COLLECTORS) + buffer_strcat(wb, "COLLECTORS "); + if(service & SERVICE_REPLICATION) + buffer_strcat(wb, "REPLICATION "); + if(service & ABILITY_DATA_QUERIES) + buffer_strcat(wb, "DATA_QUERIES "); + if(service & ABILITY_WEB_REQUESTS) + buffer_strcat(wb, "WEB_REQUESTS "); + if(service & SERVICE_WEB_SERVER) + buffer_strcat(wb, "WEB_SERVER "); + if(service & SERVICE_ACLK) + buffer_strcat(wb, "ACLK "); + if(service & SERVICE_HEALTH) + buffer_strcat(wb, "HEALTH "); + if(service & SERVICE_STREAMING) + buffer_strcat(wb, "STREAMING "); + if(service & ABILITY_STREAMING_CONNECTIONS) + buffer_strcat(wb, "STREAMING_CONNECTIONS "); + if(service & SERVICE_CONTEXT) + buffer_strcat(wb, "CONTEXT "); + if(service & SERVICE_ANALYTICS) + buffer_strcat(wb, "ANALYTICS "); + if(service & SERVICE_EXPORTERS) + buffer_strcat(wb, "EXPORTERS "); + if(service & SERVICE_HTTPD) + buffer_strcat(wb, "HTTPD "); +} + +static bool service_wait_exit(SERVICE_TYPE service, usec_t timeout_ut) { + BUFFER *service_list = buffer_create(1024, NULL); + BUFFER *thread_list = buffer_create(1024, NULL); + usec_t started_ut = now_monotonic_usec(), ended_ut; + size_t running; + SERVICE_TYPE running_services = 0; + + // cancel the threads + running = 0; + running_services = 0; + { + buffer_flush(thread_list); + + spinlock_lock(&service_globals.lock); + + Pvoid_t *PValue; + Word_t tid = 0; + bool first = true; + while((PValue = JudyLFirstThenNext(service_globals.pid_judy, &tid, &first))) { + SERVICE_THREAD *sth = *PValue; + if(sth->services & service && sth->tid != gettid() && !sth->cancelled) { + sth->cancelled = true; + + switch(sth->type) { + default: + case SERVICE_THREAD_TYPE_NETDATA: + netdata_thread_cancel(sth->netdata_thread); + break; + + case SERVICE_THREAD_TYPE_EVENT_LOOP: + case SERVICE_THREAD_TYPE_LIBUV: + break; + } + + if(running) + buffer_strcat(thread_list, ", "); + + buffer_sprintf(thread_list, "'%s' (%d)", sth->name, sth->tid); + + running++; + running_services |= sth->services & service; + + if(sth->force_quit_callback) { + spinlock_unlock(&service_globals.lock); + sth->force_quit_callback(sth->data); + spinlock_lock(&service_globals.lock); + continue; + } + } + } + + spinlock_unlock(&service_globals.lock); + } + + service_signal_exit(service); + + // signal them to stop + size_t last_running = 0; + size_t stale_time_ut = 0; + usec_t sleep_ut = 50 * USEC_PER_MS; + size_t log_countdown_ut = sleep_ut; + do { + if(running != last_running) + stale_time_ut = 0; + + last_running = running; + running = 0; + running_services = 0; + buffer_flush(thread_list); + + spinlock_lock(&service_globals.lock); + + Pvoid_t *PValue; + Word_t tid = 0; + bool first = true; + while((PValue = JudyLFirstThenNext(service_globals.pid_judy, &tid, &first))) { + SERVICE_THREAD *sth = *PValue; + if(sth->services & service && sth->tid != gettid()) { + if(running) + buffer_strcat(thread_list, ", "); + + buffer_sprintf(thread_list, "'%s' (%d)", sth->name, sth->tid); + + running_services |= sth->services & service; + running++; + } + } + + spinlock_unlock(&service_globals.lock); + + if(running) { + log_countdown_ut -= (log_countdown_ut >= sleep_ut) ? sleep_ut : log_countdown_ut; + if(log_countdown_ut == 0 || running != last_running) { + log_countdown_ut = 20 * sleep_ut; + + buffer_flush(service_list); + service_to_buffer(service_list, running_services); + netdata_log_info("SERVICE CONTROL: waiting for the following %zu services [ %s] to exit: %s", + running, buffer_tostring(service_list), + running <= 10 ? buffer_tostring(thread_list) : ""); + } + + sleep_usec(sleep_ut); + stale_time_ut += sleep_ut; + } + + ended_ut = now_monotonic_usec(); + } while(running && (ended_ut - started_ut < timeout_ut || stale_time_ut < timeout_ut)); + + if(running) { + buffer_flush(service_list); + service_to_buffer(service_list, running_services); + netdata_log_info("SERVICE CONTROL: " + "the following %zu service(s) [ %s] take too long to exit: %s; " + "giving up on them...", + running, buffer_tostring(service_list), + buffer_tostring(thread_list)); + } + + buffer_free(thread_list); + buffer_free(service_list); + + return (running == 0); +} + +#define delta_shutdown_time(msg) \ + { \ + usec_t now_ut = now_monotonic_usec(); \ + if(prev_msg) \ + netdata_log_info("NETDATA SHUTDOWN: in %7llu ms, %s%s - next: %s", (now_ut - last_ut) / USEC_PER_MS, (timeout)?"(TIMEOUT) ":"", prev_msg, msg); \ + else \ + netdata_log_info("NETDATA SHUTDOWN: next: %s", msg); \ + last_ut = now_ut; \ + prev_msg = msg; \ + timeout = false; \ + } + +void web_client_cache_destroy(void); + +void netdata_cleanup_and_exit(int ret) { + usec_t started_ut = now_monotonic_usec(); + usec_t last_ut = started_ut; + const char *prev_msg = NULL; + bool timeout = false; + + nd_log_limits_unlimited(); + netdata_log_info("NETDATA SHUTDOWN: initializing shutdown with code %d...", ret); + + send_statistics("EXIT", ret?"ERROR":"OK","-"); + + delta_shutdown_time("create shutdown file"); + + char agent_crash_file[FILENAME_MAX + 1]; + char agent_incomplete_shutdown_file[FILENAME_MAX + 1]; + snprintfz(agent_crash_file, FILENAME_MAX, "%s/.agent_crash", netdata_configured_varlib_dir); + snprintfz(agent_incomplete_shutdown_file, FILENAME_MAX, "%s/.agent_incomplete_shutdown", netdata_configured_varlib_dir); + (void) rename(agent_crash_file, agent_incomplete_shutdown_file); + +#ifdef ENABLE_DBENGINE + if(dbengine_enabled) { + delta_shutdown_time("dbengine exit mode"); + for (size_t tier = 0; tier < storage_tiers; tier++) + rrdeng_exit_mode(multidb_ctx[tier]); + } +#endif + + delta_shutdown_time("close webrtc connections"); + + webrtc_close_all_connections(); + + delta_shutdown_time("disable maintenance, new queries, new web requests, new streaming connections and aclk"); + + service_signal_exit( + SERVICE_MAINTENANCE + | ABILITY_DATA_QUERIES + | ABILITY_WEB_REQUESTS + | ABILITY_STREAMING_CONNECTIONS + | SERVICE_ACLK + | SERVICE_ACLKSYNC + ); + + delta_shutdown_time("stop replication, exporters, health and web servers threads"); + + timeout = !service_wait_exit( + SERVICE_EXPORTERS + | SERVICE_HEALTH + | SERVICE_WEB_SERVER + | SERVICE_HTTPD + , 3 * USEC_PER_SEC); + + delta_shutdown_time("stop collectors and streaming threads"); + + timeout = !service_wait_exit( + SERVICE_COLLECTORS + | SERVICE_STREAMING + , 3 * USEC_PER_SEC); + + delta_shutdown_time("stop replication threads"); + + timeout = !service_wait_exit( + SERVICE_REPLICATION // replication has to be stopped after STREAMING, because it cleans up ARAL + , 3 * USEC_PER_SEC); + + delta_shutdown_time("prepare metasync shutdown"); + + metadata_sync_shutdown_prepare(); + + delta_shutdown_time("disable ML detection and training threads"); + + ml_stop_threads(); + ml_fini(); + + delta_shutdown_time("stop context thread"); + + timeout = !service_wait_exit( + SERVICE_CONTEXT + , 3 * USEC_PER_SEC); + + delta_shutdown_time("stop maintenance thread"); + + timeout = !service_wait_exit( + SERVICE_MAINTENANCE + , 3 * USEC_PER_SEC); + + delta_shutdown_time("clear web client cache"); + + web_client_cache_destroy(); + + delta_shutdown_time("clean rrdhost database"); + + rrdhost_cleanup_all(); + + delta_shutdown_time("stop aclk threads"); + + timeout = !service_wait_exit( + SERVICE_ACLK + , 3 * USEC_PER_SEC); + + delta_shutdown_time("stop all remaining worker threads"); + + timeout = !service_wait_exit(~0, 10 * USEC_PER_SEC); + + delta_shutdown_time("cancel main threads"); + + cancel_main_threads(); + + if(!ret) { + // exit cleanly + +#ifdef ENABLE_DBENGINE + if(dbengine_enabled) { + delta_shutdown_time("flush dbengine tiers"); + for (size_t tier = 0; tier < storage_tiers; tier++) + rrdeng_prepare_exit(multidb_ctx[tier]); + + for (size_t tier = 0; tier < storage_tiers; tier++) { + if (!multidb_ctx[tier]) + continue; + completion_wait_for(&multidb_ctx[tier]->quiesce.completion); + completion_destroy(&multidb_ctx[tier]->quiesce.completion); + } + } +#endif + + // free the database + delta_shutdown_time("stop collection for all hosts"); + + // rrdhost_free_all(); + rrd_finalize_collection_for_all_hosts(); + + delta_shutdown_time("stop metasync threads"); + + metadata_sync_shutdown(); + +#ifdef ENABLE_DBENGINE + if(dbengine_enabled) { + delta_shutdown_time("wait for dbengine collectors to finish"); + + size_t running = 1; + size_t count = 10; + while(running && count) { + running = 0; + for (size_t tier = 0; tier < storage_tiers; tier++) + running += rrdeng_collectors_running(multidb_ctx[tier]); + + if(running) { + nd_log_limit_static_thread_var(erl, 1, 100 * USEC_PER_MS); + nd_log_limit(&erl, NDLS_DAEMON, NDLP_NOTICE, + "waiting for %zu collectors to finish", running); + // sleep_usec(100 * USEC_PER_MS); + cleanup_destroyed_dictionaries(); + } + count--; + } + + delta_shutdown_time("wait for dbengine main cache to finish flushing"); + + while (pgc_hot_and_dirty_entries(main_cache)) { + pgc_flush_all_hot_and_dirty_pages(main_cache, PGC_SECTION_ALL); + sleep_usec(100 * USEC_PER_MS); + } + + delta_shutdown_time("stop dbengine tiers"); + for (size_t tier = 0; tier < storage_tiers; tier++) + rrdeng_exit(multidb_ctx[tier]); + + rrdeng_enq_cmd(NULL, RRDENG_OPCODE_SHUTDOWN_EVLOOP, NULL, NULL, STORAGE_PRIORITY_BEST_EFFORT, NULL, NULL); + } +#endif + } + + delta_shutdown_time("close SQL context db"); + + sql_close_context_database(); + + delta_shutdown_time("closed SQL main db"); + + sql_close_database(); + + // unlink the pid + if(pidfile[0]) { + delta_shutdown_time("remove pid file"); + + if(unlink(pidfile) != 0) + netdata_log_error("EXIT: cannot unlink pidfile '%s'.", pidfile); + } + +#ifdef ENABLE_HTTPS + delta_shutdown_time("free openssl structures"); + netdata_ssl_cleanup(); +#endif + + delta_shutdown_time("remove incomplete shutdown file"); + + (void) unlink(agent_incomplete_shutdown_file); + + delta_shutdown_time("exit"); + + usec_t ended_ut = now_monotonic_usec(); + netdata_log_info("NETDATA SHUTDOWN: completed in %llu ms - netdata is now exiting - bye bye...", (ended_ut - started_ut) / USEC_PER_MS); + exit(ret); +} + +void web_server_threading_selection(void) { + web_server_mode = web_server_mode_id(config_get(CONFIG_SECTION_WEB, "mode", web_server_mode_name(web_server_mode))); + + int static_threaded = (web_server_mode == WEB_SERVER_MODE_STATIC_THREADED); + + int i; + for (i = 0; static_threads[i].name; i++) { + if (static_threads[i].start_routine == socket_listen_main_static_threaded) + static_threads[i].enabled = static_threaded; + } +} + +int make_dns_decision(const char *section_name, const char *config_name, const char *default_value, SIMPLE_PATTERN *p) +{ + char *value = config_get(section_name,config_name,default_value); + if(!strcmp("yes",value)) + return 1; + if(!strcmp("no",value)) + return 0; + if(strcmp("heuristic",value)) + netdata_log_error("Invalid configuration option '%s' for '%s'/'%s'. Valid options are 'yes', 'no' and 'heuristic'. Proceeding with 'heuristic'", + value, section_name, config_name); + + return simple_pattern_is_potential_name(p); +} + +void web_server_config_options(void) +{ + web_client_timeout = + (int)config_get_number(CONFIG_SECTION_WEB, "disconnect idle clients after seconds", web_client_timeout); + web_client_first_request_timeout = + (int)config_get_number(CONFIG_SECTION_WEB, "timeout for first request", web_client_first_request_timeout); + web_client_streaming_rate_t = + config_get_number(CONFIG_SECTION_WEB, "accept a streaming request every seconds", web_client_streaming_rate_t); + + respect_web_browser_do_not_track_policy = + config_get_boolean(CONFIG_SECTION_WEB, "respect do not track policy", respect_web_browser_do_not_track_policy); + web_x_frame_options = config_get(CONFIG_SECTION_WEB, "x-frame-options response header", ""); + if(!*web_x_frame_options) + web_x_frame_options = NULL; + + web_allow_connections_from = + simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow connections from", "localhost *"), + NULL, SIMPLE_PATTERN_EXACT, true); + web_allow_connections_dns = + make_dns_decision(CONFIG_SECTION_WEB, "allow connections by dns", "heuristic", web_allow_connections_from); + web_allow_dashboard_from = + simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow dashboard from", "localhost *"), + NULL, SIMPLE_PATTERN_EXACT, true); + web_allow_dashboard_dns = + make_dns_decision(CONFIG_SECTION_WEB, "allow dashboard by dns", "heuristic", web_allow_dashboard_from); + web_allow_badges_from = + simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow badges from", "*"), NULL, SIMPLE_PATTERN_EXACT, + true); + web_allow_badges_dns = + make_dns_decision(CONFIG_SECTION_WEB, "allow badges by dns", "heuristic", web_allow_badges_from); + web_allow_registry_from = + simple_pattern_create(config_get(CONFIG_SECTION_REGISTRY, "allow from", "*"), NULL, SIMPLE_PATTERN_EXACT, + true); + web_allow_registry_dns = make_dns_decision(CONFIG_SECTION_REGISTRY, "allow by dns", "heuristic", + web_allow_registry_from); + web_allow_streaming_from = simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow streaming from", "*"), + NULL, SIMPLE_PATTERN_EXACT, true); + web_allow_streaming_dns = make_dns_decision(CONFIG_SECTION_WEB, "allow streaming by dns", "heuristic", + web_allow_streaming_from); + // Note the default is not heuristic, the wildcards could match DNS but the intent is ip-addresses. + web_allow_netdataconf_from = simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow netdata.conf from", + "localhost fd* 10.* 192.168.* 172.16.* 172.17.* 172.18.*" + " 172.19.* 172.20.* 172.21.* 172.22.* 172.23.* 172.24.*" + " 172.25.* 172.26.* 172.27.* 172.28.* 172.29.* 172.30.*" + " 172.31.* UNKNOWN"), NULL, SIMPLE_PATTERN_EXACT, + true); + web_allow_netdataconf_dns = + make_dns_decision(CONFIG_SECTION_WEB, "allow netdata.conf by dns", "no", web_allow_netdataconf_from); + web_allow_mgmt_from = + simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow management from", "localhost"), + NULL, SIMPLE_PATTERN_EXACT, true); + web_allow_mgmt_dns = + make_dns_decision(CONFIG_SECTION_WEB, "allow management by dns","heuristic",web_allow_mgmt_from); + + web_enable_gzip = config_get_boolean(CONFIG_SECTION_WEB, "enable gzip compression", web_enable_gzip); + + char *s = config_get(CONFIG_SECTION_WEB, "gzip compression strategy", "default"); + if(!strcmp(s, "default")) + web_gzip_strategy = Z_DEFAULT_STRATEGY; + else if(!strcmp(s, "filtered")) + web_gzip_strategy = Z_FILTERED; + else if(!strcmp(s, "huffman only")) + web_gzip_strategy = Z_HUFFMAN_ONLY; + else if(!strcmp(s, "rle")) + web_gzip_strategy = Z_RLE; + else if(!strcmp(s, "fixed")) + web_gzip_strategy = Z_FIXED; + else { + netdata_log_error("Invalid compression strategy '%s'. Valid strategies are 'default', 'filtered', 'huffman only', 'rle' and 'fixed'. Proceeding with 'default'.", s); + web_gzip_strategy = Z_DEFAULT_STRATEGY; + } + + web_gzip_level = (int)config_get_number(CONFIG_SECTION_WEB, "gzip compression level", 3); + if(web_gzip_level < 1) { + netdata_log_error("Invalid compression level %d. Valid levels are 1 (fastest) to 9 (best ratio). Proceeding with level 1 (fastest compression).", web_gzip_level); + web_gzip_level = 1; + } + else if(web_gzip_level > 9) { + netdata_log_error("Invalid compression level %d. Valid levels are 1 (fastest) to 9 (best ratio). Proceeding with level 9 (best compression).", web_gzip_level); + web_gzip_level = 9; + } +} + + +// killpid kills pid with SIGTERM. +int killpid(pid_t pid) { + int ret; + netdata_log_debug(D_EXIT, "Request to kill pid %d", pid); + + int signal = SIGTERM; +//#ifdef NETDATA_INTERNAL_CHECKS +// if(service_running(SERVICE_COLLECTORS)) +// signal = SIGABRT; +//#endif + + errno = 0; + ret = kill(pid, signal); + if (ret == -1) { + switch(errno) { + case ESRCH: + // We wanted the process to exit so just let the caller handle. + return ret; + + case EPERM: + netdata_log_error("Cannot kill pid %d, but I do not have enough permissions.", pid); + break; + + default: + netdata_log_error("Cannot kill pid %d, but I received an error.", pid); + break; + } + } + + return ret; +} + +static void set_nofile_limit(struct rlimit *rl) { + // get the num files allowed + if(getrlimit(RLIMIT_NOFILE, rl) != 0) { + netdata_log_error("getrlimit(RLIMIT_NOFILE) failed"); + return; + } + + netdata_log_info("resources control: allowed file descriptors: soft = %zu, max = %zu", + (size_t) rl->rlim_cur, (size_t) rl->rlim_max); + + // make the soft/hard limits equal + rl->rlim_cur = rl->rlim_max; + if (setrlimit(RLIMIT_NOFILE, rl) != 0) { + netdata_log_error("setrlimit(RLIMIT_NOFILE, { %zu, %zu }) failed", (size_t)rl->rlim_cur, (size_t)rl->rlim_max); + } + + // sanity check to make sure we have enough file descriptors available to open + if (getrlimit(RLIMIT_NOFILE, rl) != 0) { + netdata_log_error("getrlimit(RLIMIT_NOFILE) failed"); + return; + } + + if (rl->rlim_cur < 1024) + netdata_log_error("Number of open file descriptors allowed for this process is too low (RLIMIT_NOFILE=%zu)", (size_t)rl->rlim_cur); +} + +void cancel_main_threads() { + nd_log_limits_unlimited(); + + int i, found = 0; + usec_t max = 5 * USEC_PER_SEC, step = 100000; + for (i = 0; static_threads[i].name != NULL ; i++) { + if (static_threads[i].enabled == NETDATA_MAIN_THREAD_RUNNING) { + if (static_threads[i].thread) { + netdata_log_info("EXIT: Stopping main thread: %s", static_threads[i].name); + netdata_thread_cancel(*static_threads[i].thread); + } else { + netdata_log_info("EXIT: No thread running (marking as EXITED): %s", static_threads[i].name); + static_threads[i].enabled = NETDATA_MAIN_THREAD_EXITED; + } + found++; + } + } + + netdata_exit = 1; + + while(found && max > 0) { + max -= step; + netdata_log_info("Waiting %d threads to finish...", found); + sleep_usec(step); + found = 0; + for (i = 0; static_threads[i].name != NULL ; i++) { + if (static_threads[i].enabled != NETDATA_MAIN_THREAD_EXITED) + found++; + } + } + + if(found) { + for (i = 0; static_threads[i].name != NULL ; i++) { + if (static_threads[i].enabled != NETDATA_MAIN_THREAD_EXITED) + netdata_log_error("Main thread %s takes too long to exit. Giving up...", static_threads[i].name); + } + } + else + netdata_log_info("All threads finished."); + + for (i = 0; static_threads[i].name != NULL ; i++) + freez(static_threads[i].thread); + + freez(static_threads); +} + +struct option_def option_definitions[] = { + // opt description arg name default value + { 'c', "Configuration file to load.", "filename", CONFIG_DIR "/" CONFIG_FILENAME}, + { 'D', "Do not fork. Run in the foreground.", NULL, "run in the background"}, + { 'd', "Fork. Run in the background.", NULL, "run in the background"}, + { 'h', "Display this help message.", NULL, NULL}, + { 'P', "File to save a pid while running.", "filename", "do not save pid to a file"}, + { 'i', "The IP address to listen to.", "IP", "all IP addresses IPv4 and IPv6"}, + { 'p', "API/Web port to use.", "port", "19999"}, + { 's', "Prefix for /proc and /sys (for containers).", "path", "no prefix"}, + { 't', "The internal clock of netdata.", "seconds", "1"}, + { 'u', "Run as user.", "username", "netdata"}, + { 'v', "Print netdata version and exit.", NULL, NULL}, + { 'V', "Print netdata version and exit.", NULL, NULL}, + { 'W', "See Advanced options below.", "options", NULL}, +}; + +int help(int exitcode) { + FILE *stream; + if(exitcode == 0) + stream = stdout; + else + stream = stderr; + + int num_opts = sizeof(option_definitions) / sizeof(struct option_def); + int i; + int max_len_arg = 0; + + // Compute maximum argument length + for( i = 0; i < num_opts; i++ ) { + if(option_definitions[i].arg_name) { + int len_arg = (int)strlen(option_definitions[i].arg_name); + if(len_arg > max_len_arg) max_len_arg = len_arg; + } + } + + if(max_len_arg > 30) max_len_arg = 30; + if(max_len_arg < 20) max_len_arg = 20; + + fprintf(stream, "%s", "\n" + " ^\n" + " |.-. .-. .-. .-. . netdata \n" + " | '-' '-' '-' '-' real-time performance monitoring, done right! \n" + " +----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+--->\n" + "\n" + " Copyright (C) 2016-2023, Netdata, Inc. \n" + " Released under GNU General Public License v3 or later.\n" + " All rights reserved.\n" + "\n" + " Home Page : https://netdata.cloud\n" + " Source Code: https://github.com/netdata/netdata\n" + " Docs : https://learn.netdata.cloud\n" + " Support : https://github.com/netdata/netdata/issues\n" + " License : https://github.com/netdata/netdata/blob/master/LICENSE.md\n" + "\n" + " Twitter : https://twitter.com/netdatahq\n" + " LinkedIn : https://linkedin.com/company/netdata-cloud/\n" + " Facebook : https://facebook.com/linuxnetdata/\n" + "\n" + "\n" + ); + + fprintf(stream, " SYNOPSIS: netdata [options]\n"); + fprintf(stream, "\n"); + fprintf(stream, " Options:\n\n"); + + // Output options description. + for( i = 0; i < num_opts; i++ ) { + fprintf(stream, " -%c %-*s %s", option_definitions[i].val, max_len_arg, option_definitions[i].arg_name ? option_definitions[i].arg_name : "", option_definitions[i].description); + if(option_definitions[i].default_value) { + fprintf(stream, "\n %c %-*s Default: %s\n", ' ', max_len_arg, "", option_definitions[i].default_value); + } else { + fprintf(stream, "\n"); + } + fprintf(stream, "\n"); + } + + fprintf(stream, "\n Advanced options:\n\n" + " -W stacksize=N Set the stacksize (in bytes).\n\n" + " -W debug_flags=N Set runtime tracing to debug.log.\n\n" + " -W unittest Run internal unittests and exit.\n\n" + " -W sqlite-meta-recover Run recovery on the metadata database and exit.\n\n" + " -W sqlite-compact Reclaim metadata database unused space and exit.\n\n" + " -W sqlite-analyze Run update statistics and exit.\n\n" +#ifdef ENABLE_DBENGINE + " -W createdataset=N Create a DB engine dataset of N seconds and exit.\n\n" + " -W stresstest=A,B,C,D,E,F,G\n" + " Run a DB engine stress test for A seconds,\n" + " with B writers and C readers, with a ramp up\n" + " time of D seconds for writers, a page cache\n" + " size of E MiB, an optional disk space limit\n" + " of F MiB, G libuv workers (default 16) and exit.\n\n" +#endif + " -W set section option value\n" + " set netdata.conf option from the command line.\n\n" + " -W buildinfo Print the version, the configure options,\n" + " a list of optional features, and whether they\n" + " are enabled or not.\n\n" + " -W buildinfojson Print the version, the configure options,\n" + " a list of optional features, and whether they\n" + " are enabled or not, in JSON format.\n\n" + " -W simple-pattern pattern string\n" + " Check if string matches pattern and exit.\n\n" + " -W \"claim -token=TOKEN -rooms=ROOM1,ROOM2\"\n" + " Claim the agent to the workspace rooms pointed to by TOKEN and ROOM*.\n\n" + ); + + fprintf(stream, "\n Signals netdata handles:\n\n" + " - HUP Close and reopen log files.\n" + " - USR1 Save internal DB to disk.\n" + " - USR2 Reload health configuration.\n" + "\n" + ); + + fflush(stream); + return exitcode; +} + +#ifdef ENABLE_HTTPS +static void security_init(){ + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s/ssl/key.pem",netdata_configured_user_config_dir); + netdata_ssl_security_key = config_get(CONFIG_SECTION_WEB, "ssl key", filename); + + snprintfz(filename, FILENAME_MAX, "%s/ssl/cert.pem",netdata_configured_user_config_dir); + netdata_ssl_security_cert = config_get(CONFIG_SECTION_WEB, "ssl certificate", filename); + + tls_version = config_get(CONFIG_SECTION_WEB, "tls version", "1.3"); + tls_ciphers = config_get(CONFIG_SECTION_WEB, "tls ciphers", "none"); + + netdata_ssl_initialize_openssl(); +} +#endif + +static void log_init(void) { + nd_log_set_facility(config_get(CONFIG_SECTION_LOGS, "facility", "daemon")); + + time_t period = ND_LOG_DEFAULT_THROTTLE_PERIOD; + size_t logs = ND_LOG_DEFAULT_THROTTLE_LOGS; + period = config_get_number(CONFIG_SECTION_LOGS, "logs flood protection period", period); + logs = (unsigned long)config_get_number(CONFIG_SECTION_LOGS, "logs to trigger flood protection", (long long int)logs); + nd_log_set_flood_protection(logs, period); + + const char *netdata_log_level = getenv("NETDATA_LOG_LEVEL"); + netdata_log_level = netdata_log_level ? nd_log_id2priority(nd_log_priority2id(netdata_log_level)) : NDLP_INFO_STR; + + nd_log_set_priority_level(config_get(CONFIG_SECTION_LOGS, "level", netdata_log_level)); + + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s/debug.log", netdata_configured_log_dir); + nd_log_set_user_settings(NDLS_DEBUG, config_get(CONFIG_SECTION_LOGS, "debug", filename)); + + bool with_journal = is_stderr_connected_to_journal() /* || nd_log_journal_socket_available() */; + if(with_journal) + snprintfz(filename, FILENAME_MAX, "journal"); + else + snprintfz(filename, FILENAME_MAX, "%s/daemon.log", netdata_configured_log_dir); + nd_log_set_user_settings(NDLS_DAEMON, config_get(CONFIG_SECTION_LOGS, "daemon", filename)); + + if(with_journal) + snprintfz(filename, FILENAME_MAX, "journal"); + else + snprintfz(filename, FILENAME_MAX, "%s/collector.log", netdata_configured_log_dir); + nd_log_set_user_settings(NDLS_COLLECTORS, config_get(CONFIG_SECTION_LOGS, "collector", filename)); + + snprintfz(filename, FILENAME_MAX, "%s/access.log", netdata_configured_log_dir); + nd_log_set_user_settings(NDLS_ACCESS, config_get(CONFIG_SECTION_LOGS, "access", filename)); + + if(with_journal) + snprintfz(filename, FILENAME_MAX, "journal"); + else + snprintfz(filename, FILENAME_MAX, "%s/health.log", netdata_configured_log_dir); + nd_log_set_user_settings(NDLS_HEALTH, config_get(CONFIG_SECTION_LOGS, "health", filename)); + +#ifdef ENABLE_ACLK + aclklog_enabled = config_get_boolean(CONFIG_SECTION_CLOUD, "conversation log", CONFIG_BOOLEAN_NO); + if (aclklog_enabled) { + snprintfz(filename, FILENAME_MAX, "%s/aclk.log", netdata_configured_log_dir); + nd_log_set_user_settings(NDLS_ACLK, config_get(CONFIG_SECTION_CLOUD, "conversation log file", filename)); + } +#endif +} + +char *initialize_lock_directory_path(char *prefix) +{ + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s/lock", prefix); + + return config_get(CONFIG_SECTION_DIRECTORIES, "lock", filename); +} + +static void backwards_compatible_config() { + // move [global] options to the [web] section + config_move(CONFIG_SECTION_GLOBAL, "http port listen backlog", + CONFIG_SECTION_WEB, "listen backlog"); + + config_move(CONFIG_SECTION_GLOBAL, "bind socket to IP", + CONFIG_SECTION_WEB, "bind to"); + + config_move(CONFIG_SECTION_GLOBAL, "bind to", + CONFIG_SECTION_WEB, "bind to"); + + config_move(CONFIG_SECTION_GLOBAL, "port", + CONFIG_SECTION_WEB, "default port"); + + config_move(CONFIG_SECTION_GLOBAL, "default port", + CONFIG_SECTION_WEB, "default port"); + + config_move(CONFIG_SECTION_GLOBAL, "disconnect idle web clients after seconds", + CONFIG_SECTION_WEB, "disconnect idle clients after seconds"); + + config_move(CONFIG_SECTION_GLOBAL, "respect web browser do not track policy", + CONFIG_SECTION_WEB, "respect do not track policy"); + + config_move(CONFIG_SECTION_GLOBAL, "web x-frame-options header", + CONFIG_SECTION_WEB, "x-frame-options response header"); + + config_move(CONFIG_SECTION_GLOBAL, "enable web responses gzip compression", + CONFIG_SECTION_WEB, "enable gzip compression"); + + config_move(CONFIG_SECTION_GLOBAL, "web compression strategy", + CONFIG_SECTION_WEB, "gzip compression strategy"); + + config_move(CONFIG_SECTION_GLOBAL, "web compression level", + CONFIG_SECTION_WEB, "gzip compression level"); + + config_move(CONFIG_SECTION_GLOBAL, "config directory", + CONFIG_SECTION_DIRECTORIES, "config"); + + config_move(CONFIG_SECTION_GLOBAL, "stock config directory", + CONFIG_SECTION_DIRECTORIES, "stock config"); + + config_move(CONFIG_SECTION_GLOBAL, "log directory", + CONFIG_SECTION_DIRECTORIES, "log"); + + config_move(CONFIG_SECTION_GLOBAL, "web files directory", + CONFIG_SECTION_DIRECTORIES, "web"); + + config_move(CONFIG_SECTION_GLOBAL, "cache directory", + CONFIG_SECTION_DIRECTORIES, "cache"); + + config_move(CONFIG_SECTION_GLOBAL, "lib directory", + CONFIG_SECTION_DIRECTORIES, "lib"); + + config_move(CONFIG_SECTION_GLOBAL, "home directory", + CONFIG_SECTION_DIRECTORIES, "home"); + + config_move(CONFIG_SECTION_GLOBAL, "lock directory", + CONFIG_SECTION_DIRECTORIES, "lock"); + + config_move(CONFIG_SECTION_GLOBAL, "plugins directory", + CONFIG_SECTION_DIRECTORIES, "plugins"); + + config_move(CONFIG_SECTION_HEALTH, "health configuration directory", + CONFIG_SECTION_DIRECTORIES, "health config"); + + config_move(CONFIG_SECTION_HEALTH, "stock health configuration directory", + CONFIG_SECTION_DIRECTORIES, "stock health config"); + + config_move(CONFIG_SECTION_REGISTRY, "registry db directory", + CONFIG_SECTION_DIRECTORIES, "registry"); + + config_move(CONFIG_SECTION_GLOBAL, "debug log", + CONFIG_SECTION_LOGS, "debug"); + + config_move(CONFIG_SECTION_GLOBAL, "error log", + CONFIG_SECTION_LOGS, "error"); + + config_move(CONFIG_SECTION_GLOBAL, "access log", + CONFIG_SECTION_LOGS, "access"); + + config_move(CONFIG_SECTION_GLOBAL, "facility log", + CONFIG_SECTION_LOGS, "facility"); + + config_move(CONFIG_SECTION_GLOBAL, "errors flood protection period", + CONFIG_SECTION_LOGS, "errors flood protection period"); + + config_move(CONFIG_SECTION_GLOBAL, "errors to trigger flood protection", + CONFIG_SECTION_LOGS, "errors to trigger flood protection"); + + config_move(CONFIG_SECTION_GLOBAL, "debug flags", + CONFIG_SECTION_LOGS, "debug flags"); + + config_move(CONFIG_SECTION_GLOBAL, "TZ environment variable", + CONFIG_SECTION_ENV_VARS, "TZ"); + + config_move(CONFIG_SECTION_PLUGINS, "PATH environment variable", + CONFIG_SECTION_ENV_VARS, "PATH"); + + config_move(CONFIG_SECTION_PLUGINS, "PYTHONPATH environment variable", + CONFIG_SECTION_ENV_VARS, "PYTHONPATH"); + + config_move(CONFIG_SECTION_STATSD, "enabled", + CONFIG_SECTION_PLUGINS, "statsd"); + + config_move(CONFIG_SECTION_GLOBAL, "memory mode", + CONFIG_SECTION_DB, "mode"); + + config_move(CONFIG_SECTION_GLOBAL, "history", + CONFIG_SECTION_DB, "retention"); + + config_move(CONFIG_SECTION_GLOBAL, "update every", + CONFIG_SECTION_DB, "update every"); + + config_move(CONFIG_SECTION_GLOBAL, "page cache size", + CONFIG_SECTION_DB, "dbengine page cache size MB"); + + config_move(CONFIG_SECTION_DB, "page cache size", + CONFIG_SECTION_DB, "dbengine page cache size MB"); + + config_move(CONFIG_SECTION_GLOBAL, "page cache uses malloc", + CONFIG_SECTION_DB, "dbengine page cache with malloc"); + + config_move(CONFIG_SECTION_DB, "page cache with malloc", + CONFIG_SECTION_DB, "dbengine page cache with malloc"); + + config_move(CONFIG_SECTION_GLOBAL, "dbengine disk space", + CONFIG_SECTION_DB, "dbengine disk space MB"); + + config_move(CONFIG_SECTION_GLOBAL, "dbengine multihost disk space", + CONFIG_SECTION_DB, "dbengine multihost disk space MB"); + + config_move(CONFIG_SECTION_GLOBAL, "memory deduplication (ksm)", + CONFIG_SECTION_DB, "memory deduplication (ksm)"); + + config_move(CONFIG_SECTION_GLOBAL, "dbengine page fetch timeout", + CONFIG_SECTION_DB, "dbengine page fetch timeout secs"); + + config_move(CONFIG_SECTION_GLOBAL, "dbengine page fetch retries", + CONFIG_SECTION_DB, "dbengine page fetch retries"); + + config_move(CONFIG_SECTION_GLOBAL, "dbengine extent pages", + CONFIG_SECTION_DB, "dbengine pages per extent"); + + config_move(CONFIG_SECTION_GLOBAL, "cleanup obsolete charts after seconds", + CONFIG_SECTION_DB, "cleanup obsolete charts after secs"); + + config_move(CONFIG_SECTION_GLOBAL, "gap when lost iterations above", + CONFIG_SECTION_DB, "gap when lost iterations above"); + + config_move(CONFIG_SECTION_GLOBAL, "cleanup orphan hosts after seconds", + CONFIG_SECTION_DB, "cleanup orphan hosts after secs"); + + config_move(CONFIG_SECTION_GLOBAL, "delete obsolete charts files", + CONFIG_SECTION_DB, "delete obsolete charts files"); + + config_move(CONFIG_SECTION_GLOBAL, "delete orphan hosts files", + CONFIG_SECTION_DB, "delete orphan hosts files"); + + config_move(CONFIG_SECTION_GLOBAL, "enable zero metrics", + CONFIG_SECTION_DB, "enable zero metrics"); + + config_move(CONFIG_SECTION_LOGS, "error", + CONFIG_SECTION_LOGS, "daemon"); + + config_move(CONFIG_SECTION_LOGS, "severity level", + CONFIG_SECTION_LOGS, "level"); + + config_move(CONFIG_SECTION_LOGS, "errors to trigger flood protection", + CONFIG_SECTION_LOGS, "logs to trigger flood protection"); + + config_move(CONFIG_SECTION_LOGS, "errors flood protection period", + CONFIG_SECTION_LOGS, "logs flood protection period"); + config_move(CONFIG_SECTION_HEALTH, "is ephemeral", + CONFIG_SECTION_GLOBAL, "is ephemeral node"); + + config_move(CONFIG_SECTION_HEALTH, "has unstable connection", + CONFIG_SECTION_GLOBAL, "has unstable connection"); +} + +static int get_hostname(char *buf, size_t buf_size) { + if (netdata_configured_host_prefix && *netdata_configured_host_prefix) { + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s/etc/hostname", netdata_configured_host_prefix); + + if (!read_file(filename, buf, buf_size)) { + trim(buf); + return 0; + } + } + + return gethostname(buf, buf_size); +} + +static void get_netdata_configured_variables() { + backwards_compatible_config(); + + // ------------------------------------------------------------------------ + // get the hostname + + netdata_configured_host_prefix = config_get(CONFIG_SECTION_GLOBAL, "host access prefix", ""); + verify_netdata_host_prefix(true); + + char buf[HOSTNAME_MAX + 1]; + if (get_hostname(buf, HOSTNAME_MAX)) + netdata_log_error("Cannot get machine hostname."); + + netdata_configured_hostname = config_get(CONFIG_SECTION_GLOBAL, "hostname", buf); + netdata_log_debug(D_OPTIONS, "hostname set to '%s'", netdata_configured_hostname); + + // ------------------------------------------------------------------------ + // get default database update frequency + + default_rrd_update_every = (int) config_get_number(CONFIG_SECTION_DB, "update every", UPDATE_EVERY); + if(default_rrd_update_every < 1 || default_rrd_update_every > 600) { + netdata_log_error("Invalid data collection frequency (update every) %d given. Defaulting to %d.", default_rrd_update_every, UPDATE_EVERY); + default_rrd_update_every = UPDATE_EVERY; + config_set_number(CONFIG_SECTION_DB, "update every", default_rrd_update_every); + } + + // ------------------------------------------------------------------------ + // get default memory mode for the database + + { + const char *mode = config_get(CONFIG_SECTION_DB, "mode", rrd_memory_mode_name(default_rrd_memory_mode)); + default_rrd_memory_mode = rrd_memory_mode_id(mode); + if(strcmp(mode, rrd_memory_mode_name(default_rrd_memory_mode)) != 0) { + netdata_log_error("Invalid memory mode '%s' given. Using '%s'", mode, rrd_memory_mode_name(default_rrd_memory_mode)); + config_set(CONFIG_SECTION_DB, "mode", rrd_memory_mode_name(default_rrd_memory_mode)); + } + } + + // ------------------------------------------------------------------------ + // get default database size + + if(default_rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE && default_rrd_memory_mode != RRD_MEMORY_MODE_NONE) { + default_rrd_history_entries = (int)config_get_number( + CONFIG_SECTION_DB, "retention", + align_entries_to_pagesize(default_rrd_memory_mode, RRD_DEFAULT_HISTORY_ENTRIES)); + + long h = align_entries_to_pagesize(default_rrd_memory_mode, default_rrd_history_entries); + if (h != default_rrd_history_entries) { + config_set_number(CONFIG_SECTION_DB, "retention", h); + default_rrd_history_entries = (int)h; + } + } + + // ------------------------------------------------------------------------ + // get system paths + + netdata_configured_user_config_dir = config_get(CONFIG_SECTION_DIRECTORIES, "config", netdata_configured_user_config_dir); + netdata_configured_stock_config_dir = config_get(CONFIG_SECTION_DIRECTORIES, "stock config", netdata_configured_stock_config_dir); + netdata_configured_log_dir = config_get(CONFIG_SECTION_DIRECTORIES, "log", netdata_configured_log_dir); + netdata_configured_web_dir = config_get(CONFIG_SECTION_DIRECTORIES, "web", netdata_configured_web_dir); + netdata_configured_cache_dir = config_get(CONFIG_SECTION_DIRECTORIES, "cache", netdata_configured_cache_dir); + netdata_configured_varlib_dir = config_get(CONFIG_SECTION_DIRECTORIES, "lib", netdata_configured_varlib_dir); + + netdata_configured_lock_dir = initialize_lock_directory_path(netdata_configured_varlib_dir); + + { + pluginsd_initialize_plugin_directories(); + netdata_configured_primary_plugins_dir = plugin_directories[PLUGINSD_STOCK_PLUGINS_DIRECTORY_PATH]; + } + +#ifdef ENABLE_DBENGINE + // ------------------------------------------------------------------------ + // get default Database Engine page type + + const char *page_type = config_get(CONFIG_SECTION_DB, "dbengine page type", "raw"); + if (strcmp(page_type, "gorilla") == 0) { + tier_page_type[0] = PAGE_GORILLA_METRICS; + } else if (strcmp(page_type, "raw") != 0) { + netdata_log_error("Invalid dbengine page type ''%s' given. Defaulting to 'raw'.", page_type); + } + + // ------------------------------------------------------------------------ + // get default Database Engine page cache size in MiB + + default_rrdeng_page_cache_mb = (int) config_get_number(CONFIG_SECTION_DB, "dbengine page cache size MB", default_rrdeng_page_cache_mb); + default_rrdeng_extent_cache_mb = (int) config_get_number(CONFIG_SECTION_DB, "dbengine extent cache size MB", default_rrdeng_extent_cache_mb); + db_engine_journal_check = config_get_boolean(CONFIG_SECTION_DB, "dbengine enable journal integrity check", CONFIG_BOOLEAN_NO); + + if(default_rrdeng_extent_cache_mb < 0) + default_rrdeng_extent_cache_mb = 0; + + if(default_rrdeng_page_cache_mb < RRDENG_MIN_PAGE_CACHE_SIZE_MB) { + netdata_log_error("Invalid page cache size %d given. Defaulting to %d.", default_rrdeng_page_cache_mb, RRDENG_MIN_PAGE_CACHE_SIZE_MB); + default_rrdeng_page_cache_mb = RRDENG_MIN_PAGE_CACHE_SIZE_MB; + config_set_number(CONFIG_SECTION_DB, "dbengine page cache size MB", default_rrdeng_page_cache_mb); + } + + // ------------------------------------------------------------------------ + // get default Database Engine disk space quota in MiB + + default_rrdeng_disk_quota_mb = (int) config_get_number(CONFIG_SECTION_DB, "dbengine disk space MB", default_rrdeng_disk_quota_mb); + if(default_rrdeng_disk_quota_mb < RRDENG_MIN_DISK_SPACE_MB) { + netdata_log_error("Invalid dbengine disk space %d given. Defaulting to %d.", default_rrdeng_disk_quota_mb, RRDENG_MIN_DISK_SPACE_MB); + default_rrdeng_disk_quota_mb = RRDENG_MIN_DISK_SPACE_MB; + config_set_number(CONFIG_SECTION_DB, "dbengine disk space MB", default_rrdeng_disk_quota_mb); + } + + default_multidb_disk_quota_mb = (int) config_get_number(CONFIG_SECTION_DB, "dbengine multihost disk space MB", compute_multidb_diskspace()); + if(default_multidb_disk_quota_mb < RRDENG_MIN_DISK_SPACE_MB) { + netdata_log_error("Invalid multidb disk space %d given. Defaulting to %d.", default_multidb_disk_quota_mb, default_rrdeng_disk_quota_mb); + default_multidb_disk_quota_mb = default_rrdeng_disk_quota_mb; + config_set_number(CONFIG_SECTION_DB, "dbengine multihost disk space MB", default_multidb_disk_quota_mb); + } +#else + if (default_rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) { + error_report("RRD_MEMORY_MODE_DBENGINE is not supported in this platform. The agent will use db mode 'save' instead."); + default_rrd_memory_mode = RRD_MEMORY_MODE_SAVE; + } +#endif + + // -------------------------------------------------------------------- + // get KSM settings + +#ifdef MADV_MERGEABLE + enable_ksm = config_get_boolean(CONFIG_SECTION_DB, "memory deduplication (ksm)", enable_ksm); +#endif + + // -------------------------------------------------------------------- + // metric correlations + + enable_metric_correlations = config_get_boolean(CONFIG_SECTION_GLOBAL, "enable metric correlations", enable_metric_correlations); + default_metric_correlations_method = weights_string_to_method(config_get( + CONFIG_SECTION_GLOBAL, "metric correlations method", + weights_method_to_string(default_metric_correlations_method))); + + // -------------------------------------------------------------------- + + rrdset_free_obsolete_time_s = config_get_number(CONFIG_SECTION_DB, "cleanup obsolete charts after secs", rrdset_free_obsolete_time_s); + rrdhost_free_ephemeral_time_s = config_get_number(CONFIG_SECTION_DB, "cleanup ephemeral hosts after secs", rrdhost_free_ephemeral_time_s); + // Current chart locking and invalidation scheme doesn't prevent Netdata from segmentation faults if a short + // cleanup delay is set. Extensive stress tests showed that 10 seconds is quite a safe delay. Look at + // https://github.com/netdata/netdata/pull/11222#issuecomment-868367920 for more information. + if (rrdset_free_obsolete_time_s < 10) { + rrdset_free_obsolete_time_s = 10; + netdata_log_info("The \"cleanup obsolete charts after seconds\" option was set to 10 seconds."); + config_set_number(CONFIG_SECTION_DB, "cleanup obsolete charts after secs", rrdset_free_obsolete_time_s); + } + + gap_when_lost_iterations_above = (int)config_get_number(CONFIG_SECTION_DB, "gap when lost iterations above", gap_when_lost_iterations_above); + if (gap_when_lost_iterations_above < 1) { + gap_when_lost_iterations_above = 1; + config_set_number(CONFIG_SECTION_DB, "gap when lost iterations above", gap_when_lost_iterations_above); + } + gap_when_lost_iterations_above += 2; + + // -------------------------------------------------------------------- + // get various system parameters + + get_system_HZ(); + get_system_cpus_uncached(); + get_system_pid_max(); + + +} + +static void post_conf_load(char **user) +{ + // -------------------------------------------------------------------- + // get the user we should run + + // IMPORTANT: this is required before web_files_uid() + if(getuid() == 0) { + *user = config_get(CONFIG_SECTION_GLOBAL, "run as user", NETDATA_USER); + } + else { + struct passwd *passwd = getpwuid(getuid()); + *user = config_get(CONFIG_SECTION_GLOBAL, "run as user", (passwd && passwd->pw_name)?passwd->pw_name:""); + } +} + +static bool load_netdata_conf(char *filename, char overwrite_used, char **user) { + errno = 0; + + int ret = 0; + + if(filename && *filename) { + ret = config_load(filename, overwrite_used, NULL); + if(!ret) + netdata_log_error("CONFIG: cannot load config file '%s'.", filename); + } + else { + filename = strdupz_path_subpath(netdata_configured_user_config_dir, "netdata.conf"); + + ret = config_load(filename, overwrite_used, NULL); + if(!ret) { + netdata_log_info("CONFIG: cannot load user config '%s'. Will try the stock version.", filename); + freez(filename); + + filename = strdupz_path_subpath(netdata_configured_stock_config_dir, "netdata.conf"); + ret = config_load(filename, overwrite_used, NULL); + if(!ret) + netdata_log_info("CONFIG: cannot load stock config '%s'. Running with internal defaults.", filename); + } + + freez(filename); + } + + post_conf_load(user); + return ret; +} + +// coverity[ +tainted_string_sanitize_content : arg-0 ] +static inline void coverity_remove_taint(char *s) +{ + (void)s; +} + +int get_system_info(struct rrdhost_system_info *system_info) { + char *script; + script = mallocz(sizeof(char) * (strlen(netdata_configured_primary_plugins_dir) + strlen("system-info.sh") + 2)); + sprintf(script, "%s/%s", netdata_configured_primary_plugins_dir, "system-info.sh"); + if (unlikely(access(script, R_OK) != 0)) { + netdata_log_error("System info script %s not found.",script); + freez(script); + return 1; + } + + pid_t command_pid; + + FILE *fp_child_input; + FILE *fp_child_output = netdata_popen(script, &command_pid, &fp_child_input); + if(fp_child_output) { + char line[200 + 1]; + // Removed the double strlens, if the Coverity tainted string warning reappears I'll revert. + // One time init code, but I'm curious about the warning... + while (fgets(line, 200, fp_child_output) != NULL) { + char *value=line; + while (*value && *value != '=') value++; + if (*value=='=') { + *value='\0'; + value++; + char *end = value; + while (*end && *end != '\n') end++; + *end = '\0'; // Overwrite newline if present + coverity_remove_taint(line); // I/O is controlled result of system_info.sh - not tainted + coverity_remove_taint(value); + + if(unlikely(rrdhost_set_system_info_variable(system_info, line, value))) { + netdata_log_error("Unexpected environment variable %s=%s", line, value); + } else { + setenv(line, value, 1); + } + } + } + netdata_pclose(fp_child_input, fp_child_output, command_pid); + } + freez(script); + return 0; +} + +void set_silencers_filename() { + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s/health.silencers.json", netdata_configured_varlib_dir); + silencers_filename = config_get(CONFIG_SECTION_HEALTH, "silencers file", filename); +} + +/* Any config setting that can be accessed without a default value i.e. configget(...,...,NULL) *MUST* + be set in this procedure to be called in all the relevant code paths. +*/ + +#define delta_startup_time(msg) \ + { \ + usec_t now_ut = now_monotonic_usec(); \ + if(prev_msg) \ + netdata_log_info("NETDATA STARTUP: in %7llu ms, %s - next: %s", (now_ut - last_ut) / USEC_PER_MS, prev_msg, msg); \ + else \ + netdata_log_info("NETDATA STARTUP: next: %s", msg); \ + last_ut = now_ut; \ + prev_msg = msg; \ + } + +int buffer_unittest(void); +int pgc_unittest(void); +int mrg_unittest(void); +int julytest(void); +int pluginsd_parser_unittest(void); +void replication_initialize(void); +void bearer_tokens_init(void); +int unittest_rrdpush_compressions(void); +int uuid_unittest(void); + +int main(int argc, char **argv) { + // initialize the system clocks + clocks_init(); + netdata_start_time = now_realtime_sec(); + + usec_t started_ut = now_monotonic_usec(); + usec_t last_ut = started_ut; + const char *prev_msg = NULL; + + int i; + int config_loaded = 0; + int dont_fork = 0; + bool close_open_fds = true; + size_t default_stacksize; + char *user = NULL; + + static_threads = static_threads_get(); + + netdata_ready = false; + // set the name for logging + program_name = "netdata"; + + if (argc > 1 && strcmp(argv[1], SPAWN_SERVER_COMMAND_LINE_ARGUMENT) == 0) { + // don't run netdata, this is the spawn server + spawn_server(); + exit(0); + } + + // parse options + { + int num_opts = sizeof(option_definitions) / sizeof(struct option_def); + char optstring[(num_opts * 2) + 1]; + + int string_i = 0; + for( i = 0; i < num_opts; i++ ) { + optstring[string_i] = option_definitions[i].val; + string_i++; + if(option_definitions[i].arg_name) { + optstring[string_i] = ':'; + string_i++; + } + } + // terminate optstring + optstring[string_i] ='\0'; + optstring[(num_opts *2)] ='\0'; + + int opt; + while( (opt = getopt(argc, argv, optstring)) != -1 ) { + switch(opt) { + case 'c': + if(!load_netdata_conf(optarg, 1, &user)) { + netdata_log_error("Cannot load configuration file %s.", optarg); + return 1; + } + else { + netdata_log_debug(D_OPTIONS, "Configuration loaded from %s.", optarg); + load_cloud_conf(1); + config_loaded = 1; + } + break; + case 'D': + dont_fork = 1; + break; + case 'd': + dont_fork = 0; + break; + case 'h': + return help(0); + case 'i': + config_set(CONFIG_SECTION_WEB, "bind to", optarg); + break; + case 'P': + strncpy(pidfile, optarg, FILENAME_MAX); + pidfile[FILENAME_MAX] = '\0'; + break; + case 'p': + config_set(CONFIG_SECTION_GLOBAL, "default port", optarg); + break; + case 's': + config_set(CONFIG_SECTION_GLOBAL, "host access prefix", optarg); + break; + case 't': + config_set(CONFIG_SECTION_GLOBAL, "update every", optarg); + break; + case 'u': + config_set(CONFIG_SECTION_GLOBAL, "run as user", optarg); + break; + case 'v': + case 'V': + printf("%s %s\n", program_name, program_version); + return 0; + case 'W': + { + char* stacksize_string = "stacksize="; + char* debug_flags_string = "debug_flags="; + char* claim_string = "claim"; +#ifdef ENABLE_DBENGINE + char* createdataset_string = "createdataset="; + char* stresstest_string = "stresstest="; + + if(strcmp(optarg, "pgd-tests") == 0) { + return pgd_test(argc, argv); + } +#endif + + if(strcmp(optarg, "sqlite-meta-recover") == 0) { + sql_init_database(DB_CHECK_RECOVER, 0); + return 0; + } + + if(strcmp(optarg, "sqlite-compact") == 0) { + sql_init_database(DB_CHECK_RECLAIM_SPACE, 0); + return 0; + } + + if(strcmp(optarg, "sqlite-analyze") == 0) { + sql_init_database(DB_CHECK_ANALYZE, 0); + return 0; + } + + if(strcmp(optarg, "unittest") == 0) { + unittest_running = true; + + if (pluginsd_parser_unittest()) + return 1; + + if (unit_test_static_threads()) + return 1; + if (unit_test_buffer()) + return 1; + if (unit_test_str2ld()) + return 1; + if (buffer_unittest()) + return 1; + if (unit_test_bitmaps()) + return 1; + // No call to load the config file on this code-path + post_conf_load(&user); + get_netdata_configured_variables(); + default_rrd_update_every = 1; + default_rrd_memory_mode = RRD_MEMORY_MODE_RAM; + default_health_enabled = 0; + storage_tiers = 1; + registry_init(); + if(rrd_init("unittest", NULL, true)) { + fprintf(stderr, "rrd_init failed for unittest\n"); + return 1; + } + default_rrdpush_enabled = 0; + if(run_all_mockup_tests()) return 1; + if(unit_test_storage()) return 1; +#ifdef ENABLE_DBENGINE + if(test_dbengine()) return 1; +#endif + if(test_sqlite()) return 1; + if(string_unittest(10000)) return 1; + if (dictionary_unittest(10000)) + return 1; + if(aral_unittest(10000)) + return 1; + if (rrdlabels_unittest()) + return 1; + if (ctx_unittest()) + return 1; + if (uuid_unittest()) + return 1; + fprintf(stderr, "\n\nALL TESTS PASSED\n\n"); + return 0; + } + else if(strcmp(optarg, "escapetest") == 0) { + return command_argument_sanitization_tests(); + } + else if(strcmp(optarg, "dicttest") == 0) { + unittest_running = true; + return dictionary_unittest(10000); + } + else if(strcmp(optarg, "araltest") == 0) { + unittest_running = true; + return aral_unittest(10000); + } + else if(strcmp(optarg, "stringtest") == 0) { + unittest_running = true; + return string_unittest(10000); + } + else if(strcmp(optarg, "rrdlabelstest") == 0) { + unittest_running = true; + return rrdlabels_unittest(); + } + else if(strcmp(optarg, "buffertest") == 0) { + unittest_running = true; + return buffer_unittest(); + } + else if(strcmp(optarg, "uuidtest") == 0) { + unittest_running = true; + return uuid_unittest(); + } +#ifdef ENABLE_DBENGINE + else if(strcmp(optarg, "mctest") == 0) { + unittest_running = true; + return mc_unittest(); + } + else if(strcmp(optarg, "ctxtest") == 0) { + unittest_running = true; + return ctx_unittest(); + } + else if(strcmp(optarg, "metatest") == 0) { + unittest_running = true; + return metadata_unittest(); + } + else if(strcmp(optarg, "pgctest") == 0) { + unittest_running = true; + return pgc_unittest(); + } + else if(strcmp(optarg, "mrgtest") == 0) { + unittest_running = true; + return mrg_unittest(); + } + else if(strcmp(optarg, "julytest") == 0) { + unittest_running = true; + return julytest(); + } + else if(strcmp(optarg, "parsertest") == 0) { + unittest_running = true; + return pluginsd_parser_unittest(); + } + else if(strcmp(optarg, "rrdpush_compressions_test") == 0) { + unittest_running = true; + return unittest_rrdpush_compressions(); + } + else if(strncmp(optarg, createdataset_string, strlen(createdataset_string)) == 0) { + optarg += strlen(createdataset_string); + unsigned history_seconds = strtoul(optarg, NULL, 0); + post_conf_load(&user); + get_netdata_configured_variables(); + default_rrd_update_every = 1; + registry_init(); + if(rrd_init("dbengine-dataset", NULL, true)) { + fprintf(stderr, "rrd_init failed for unittest\n"); + return 1; + } + generate_dbengine_dataset(history_seconds); + return 0; + } + else if(strncmp(optarg, stresstest_string, strlen(stresstest_string)) == 0) { + char *endptr; + unsigned test_duration_sec = 0, dset_charts = 0, query_threads = 0, ramp_up_seconds = 0, + page_cache_mb = 0, disk_space_mb = 0, workers = 16; + + optarg += strlen(stresstest_string); + test_duration_sec = (unsigned)strtoul(optarg, &endptr, 0); + if (',' == *endptr) + dset_charts = (unsigned)strtoul(endptr + 1, &endptr, 0); + if (',' == *endptr) + query_threads = (unsigned)strtoul(endptr + 1, &endptr, 0); + if (',' == *endptr) + ramp_up_seconds = (unsigned)strtoul(endptr + 1, &endptr, 0); + if (',' == *endptr) + page_cache_mb = (unsigned)strtoul(endptr + 1, &endptr, 0); + if (',' == *endptr) + disk_space_mb = (unsigned)strtoul(endptr + 1, &endptr, 0); + if (',' == *endptr) + workers = (unsigned)strtoul(endptr + 1, &endptr, 0); + + if (workers > 1024) + workers = 1024; + + char workers_str[16]; + snprintf(workers_str, 15, "%u", workers); + setenv("UV_THREADPOOL_SIZE", workers_str, 1); + dbengine_stress_test(test_duration_sec, dset_charts, query_threads, ramp_up_seconds, + page_cache_mb, disk_space_mb); + return 0; + } +#endif + else if(strcmp(optarg, "simple-pattern") == 0) { + if(optind + 2 > argc) { + fprintf(stderr, "%s", "\nUSAGE: -W simple-pattern 'pattern' 'string'\n\n" + " Checks if 'pattern' matches the given 'string'.\n" + " - 'pattern' can be one or more space separated words.\n" + " - each 'word' can contain one or more asterisks.\n" + " - words starting with '!' give negative matches.\n" + " - words are processed left to right\n" + "\n" + "Examples:\n" + "\n" + " > match all veth interfaces, except veth0:\n" + "\n" + " -W simple-pattern '!veth0 veth*' 'veth12'\n" + "\n" + "\n" + " > match all *.ext files directly in /path/:\n" + " (this will not match *.ext files in a subdir of /path/)\n" + "\n" + " -W simple-pattern '!/path/*/*.ext /path/*.ext' '/path/test.ext'\n" + "\n" + ); + return 1; + } + + const char *haystack = argv[optind]; + const char *needle = argv[optind + 1]; + size_t len = strlen(needle) + 1; + char wildcarded[len]; + + SIMPLE_PATTERN *p = simple_pattern_create(haystack, NULL, SIMPLE_PATTERN_EXACT, true); + SIMPLE_PATTERN_RESULT ret = simple_pattern_matches_extract(p, needle, wildcarded, len); + simple_pattern_free(p); + + if(ret == SP_MATCHED_POSITIVE) { + fprintf(stdout, "RESULT: POSITIVE MATCHED - pattern '%s' matches '%s', wildcarded '%s'\n", haystack, needle, wildcarded); + return 0; + } + else if(ret == SP_MATCHED_NEGATIVE) { + fprintf(stdout, "RESULT: NEGATIVE MATCHED - pattern '%s' matches '%s', wildcarded '%s'\n", haystack, needle, wildcarded); + return 0; + } + else { + fprintf(stdout, "RESULT: NOT MATCHED - pattern '%s' does not match '%s', wildcarded '%s'\n", haystack, needle, wildcarded); + return 1; + } + } + else if(strncmp(optarg, stacksize_string, strlen(stacksize_string)) == 0) { + optarg += strlen(stacksize_string); + config_set(CONFIG_SECTION_GLOBAL, "pthread stack size", optarg); + } + else if(strncmp(optarg, debug_flags_string, strlen(debug_flags_string)) == 0) { + optarg += strlen(debug_flags_string); + config_set(CONFIG_SECTION_LOGS, "debug flags", optarg); + debug_flags = strtoull(optarg, NULL, 0); + } + else if(strcmp(optarg, "set") == 0) { + if(optind + 3 > argc) { + fprintf(stderr, "%s", "\nUSAGE: -W set 'section' 'key' 'value'\n\n" + " Overwrites settings of netdata.conf.\n" + "\n" + " These options interact with: -c netdata.conf\n" + " If -c netdata.conf is given on the command line,\n" + " before -W set... the user may overwrite command\n" + " line parameters at netdata.conf\n" + " If -c netdata.conf is given after (or missing)\n" + " -W set... the user cannot overwrite the command line\n" + " parameters." + "\n" + ); + return 1; + } + const char *section = argv[optind]; + const char *key = argv[optind + 1]; + const char *value = argv[optind + 2]; + optind += 3; + + // set this one as the default + // only if it is not already set in the config file + // so the caller can use -c netdata.conf before or + // after this parameter to prevent or allow overwriting + // variables at netdata.conf + config_set_default(section, key, value); + + // fprintf(stderr, "SET section '%s', key '%s', value '%s'\n", section, key, value); + } + else if(strcmp(optarg, "set2") == 0) { + if(optind + 4 > argc) { + fprintf(stderr, "%s", "\nUSAGE: -W set 'conf_file' 'section' 'key' 'value'\n\n" + " Overwrites settings of netdata.conf or cloud.conf\n" + "\n" + " These options interact with: -c netdata.conf\n" + " If -c netdata.conf is given on the command line,\n" + " before -W set... the user may overwrite command\n" + " line parameters at netdata.conf\n" + " If -c netdata.conf is given after (or missing)\n" + " -W set... the user cannot overwrite the command line\n" + " parameters." + " conf_file can be \"cloud\" or \"netdata\".\n" + "\n" + ); + return 1; + } + const char *conf_file = argv[optind]; /* "cloud" is cloud.conf, otherwise netdata.conf */ + struct config *tmp_config = strcmp(conf_file, "cloud") ? &netdata_config : &cloud_config; + const char *section = argv[optind + 1]; + const char *key = argv[optind + 2]; + const char *value = argv[optind + 3]; + optind += 4; + + // set this one as the default + // only if it is not already set in the config file + // so the caller can use -c netdata.conf before or + // after this parameter to prevent or allow overwriting + // variables at netdata.conf + appconfig_set_default(tmp_config, section, key, value); + + // fprintf(stderr, "SET section '%s', key '%s', value '%s'\n", section, key, value); + } + else if(strcmp(optarg, "get") == 0) { + if(optind + 3 > argc) { + fprintf(stderr, "%s", "\nUSAGE: -W get 'section' 'key' 'value'\n\n" + " Prints settings of netdata.conf.\n" + "\n" + " These options interact with: -c netdata.conf\n" + " -c netdata.conf has to be given before -W get.\n" + "\n" + ); + return 1; + } + + if(!config_loaded) { + fprintf(stderr, "warning: no configuration file has been loaded. Use -c CONFIG_FILE, before -W get. Using default config.\n"); + load_netdata_conf(NULL, 0, &user); + } + + get_netdata_configured_variables(); + + const char *section = argv[optind]; + const char *key = argv[optind + 1]; + const char *def = argv[optind + 2]; + const char *value = config_get(section, key, def); + printf("%s\n", value); + return 0; + } + else if(strcmp(optarg, "get2") == 0) { + if(optind + 4 > argc) { + fprintf(stderr, "%s", "\nUSAGE: -W get2 'conf_file' 'section' 'key' 'value'\n\n" + " Prints settings of netdata.conf or cloud.conf\n" + "\n" + " These options interact with: -c netdata.conf\n" + " -c netdata.conf has to be given before -W get2.\n" + " conf_file can be \"cloud\" or \"netdata\".\n" + "\n" + ); + return 1; + } + + if(!config_loaded) { + fprintf(stderr, "warning: no configuration file has been loaded. Use -c CONFIG_FILE, before -W get. Using default config.\n"); + load_netdata_conf(NULL, 0, &user); + load_cloud_conf(1); + } + + get_netdata_configured_variables(); + + const char *conf_file = argv[optind]; /* "cloud" is cloud.conf, otherwise netdata.conf */ + struct config *tmp_config = strcmp(conf_file, "cloud") ? &netdata_config : &cloud_config; + const char *section = argv[optind + 1]; + const char *key = argv[optind + 2]; + const char *def = argv[optind + 3]; + const char *value = appconfig_get(tmp_config, section, key, def); + printf("%s\n", value); + return 0; + } + else if(strncmp(optarg, claim_string, strlen(claim_string)) == 0) { + /* will trigger a claiming attempt when the agent is initialized */ + claiming_pending_arguments = optarg + strlen(claim_string); + } + else if(strcmp(optarg, "buildinfo") == 0) { + print_build_info(); + return 0; + } + else if(strcmp(optarg, "buildinfojson") == 0) { + print_build_info_json(); + return 0; + } + else if(strcmp(optarg, "keepopenfds") == 0) { + // Internal dev option to skip closing inherited + // open FDs. Useful, when we want to run the agent + // under profiling tools that open/maintain their + // own FDs. + close_open_fds = false; + } else { + fprintf(stderr, "Unknown -W parameter '%s'\n", optarg); + return help(1); + } + } + break; + + default: /* ? */ + fprintf(stderr, "Unknown parameter '%c'\n", opt); + return help(1); + } + } + } + + if (close_open_fds == true) { + // close all open file descriptors, except the standard ones + // the caller may have left open files (lxc-attach has this issue) + for_each_open_fd(OPEN_FD_ACTION_CLOSE, OPEN_FD_EXCLUDE_STDIN | OPEN_FD_EXCLUDE_STDOUT | OPEN_FD_EXCLUDE_STDERR); + } + + + if(!config_loaded) { + load_netdata_conf(NULL, 0, &user); + load_cloud_conf(0); + } + + // ------------------------------------------------------------------------ + // initialize netdata + { + char *pmax = config_get(CONFIG_SECTION_GLOBAL, "glibc malloc arena max for plugins", "1"); + if(pmax && *pmax) + setenv("MALLOC_ARENA_MAX", pmax, 1); + +#if defined(HAVE_C_MALLOPT) + i = (int)config_get_number(CONFIG_SECTION_GLOBAL, "glibc malloc arena max for netdata", 1); + if(i > 0) + mallopt(M_ARENA_MAX, 1); + + +#ifdef NETDATA_INTERNAL_CHECKS + mallopt(M_PERTURB, 0x5A); + // mallopt(M_MXFAST, 0); +#endif +#endif + + // set libuv worker threads + libuv_worker_threads = (int)get_netdata_cpus() * 6; + + if(libuv_worker_threads < MIN_LIBUV_WORKER_THREADS) + libuv_worker_threads = MIN_LIBUV_WORKER_THREADS; + + if(libuv_worker_threads > MAX_LIBUV_WORKER_THREADS) + libuv_worker_threads = MAX_LIBUV_WORKER_THREADS; + + + libuv_worker_threads = config_get_number(CONFIG_SECTION_GLOBAL, "libuv worker threads", libuv_worker_threads); + if(libuv_worker_threads < MIN_LIBUV_WORKER_THREADS) { + libuv_worker_threads = MIN_LIBUV_WORKER_THREADS; + config_set_number(CONFIG_SECTION_GLOBAL, "libuv worker threads", libuv_worker_threads); + } + + { + char buf[20 + 1]; + snprintfz(buf, sizeof(buf) - 1, "%d", libuv_worker_threads); + setenv("UV_THREADPOOL_SIZE", buf, 1); + } + + // prepare configuration environment variables for the plugins + get_netdata_configured_variables(); + set_global_environment(); + + // work while we are cd into config_dir + // to allow the plugins refer to their config + // files using relative filenames + if(chdir(netdata_configured_user_config_dir) == -1) + fatal("Cannot cd to '%s'", netdata_configured_user_config_dir); + + // Get execution path before switching user to avoid permission issues + get_netdata_execution_path(); + } + + { + // -------------------------------------------------------------------- + // get the debugging flags from the configuration file + + char *flags = config_get(CONFIG_SECTION_LOGS, "debug flags", "0x0000000000000000"); + setenv("NETDATA_DEBUG_FLAGS", flags, 1); + + debug_flags = strtoull(flags, NULL, 0); + netdata_log_debug(D_OPTIONS, "Debug flags set to '0x%" PRIX64 "'.", debug_flags); + + if(debug_flags != 0) { + struct rlimit rl = { RLIM_INFINITY, RLIM_INFINITY }; + if(setrlimit(RLIMIT_CORE, &rl) != 0) + netdata_log_error("Cannot request unlimited core dumps for debugging... Proceeding anyway..."); + +#ifdef HAVE_SYS_PRCTL_H + prctl(PR_SET_DUMPABLE, 1, 0, 0, 0); +#endif + } + + + // -------------------------------------------------------------------- + // get log filenames and settings + + log_init(); + nd_log_limits_unlimited(); + + // initialize the log files + nd_log_initialize(); + netdata_log_info("Netdata agent version \""VERSION"\" is starting"); + + ieee754_doubles = is_system_ieee754_double(); + if(!ieee754_doubles) + globally_disabled_capabilities |= STREAM_CAP_IEEE754; + + aral_judy_init(); + + get_system_timezone(); + + bearer_tokens_init(); + + replication_initialize(); + + rrd_functions_inflight_init(); + + // -------------------------------------------------------------------- + // get the certificate and start security + +#ifdef ENABLE_HTTPS + security_init(); +#endif + + // -------------------------------------------------------------------- + // This is the safest place to start the SILENCERS structure + + set_silencers_filename(); + health_initialize_global_silencers(); + +// // -------------------------------------------------------------------- +// // Initialize ML configuration +// +// delta_startup_time("initialize ML"); +// ml_init(); + + // -------------------------------------------------------------------- + // setup process signals + + // block signals while initializing threads. + // this causes the threads to block signals. + + delta_startup_time("initialize signals"); + signals_block(); + signals_init(); // setup the signals we want to use + + // -------------------------------------------------------------------- + // check which threads are enabled and initialize them + + delta_startup_time("initialize static threads"); + + // setup threads configs + default_stacksize = netdata_threads_init(); + +#ifdef NETDATA_INTERNAL_CHECKS + config_set_boolean(CONFIG_SECTION_PLUGINS, "netdata monitoring", true); + config_set_boolean(CONFIG_SECTION_PLUGINS, "netdata monitoring extended", true); +#endif + + if(config_get_boolean(CONFIG_SECTION_PLUGINS, "netdata monitoring extended", false)) + // this has to run before starting any other threads that use workers + workers_utilization_enable(); + + for (i = 0; static_threads[i].name != NULL ; i++) { + struct netdata_static_thread *st = &static_threads[i]; + + if(st->config_name) + st->enabled = config_get_boolean(st->config_section, st->config_name, st->enabled); + + if(st->enabled && st->init_routine) + st->init_routine(); + + if(st->env_name) + setenv(st->env_name, st->enabled?"YES":"NO", 1); + + if(st->global_variable) + *st->global_variable = (st->enabled) ? true : false; + } + + // -------------------------------------------------------------------- + // create the listening sockets + + delta_startup_time("initialize web server"); + + web_client_api_v1_init(); + web_server_threading_selection(); + + if(web_server_mode != WEB_SERVER_MODE_NONE) { + if (!api_listen_sockets_setup()) { + netdata_log_error("Cannot setup listen port(s). Is Netdata already running?"); + exit(1); + } + } + + // -------------------------------------------------------------------- + // Initialize ML configuration + + delta_startup_time("initialize ML"); + ml_init(); + +#ifdef ENABLE_H2O + delta_startup_time("initialize h2o server"); + for (int i = 0; static_threads[i].name; i++) { + if (static_threads[i].start_routine == h2o_main) + static_threads[i].enabled = httpd_is_enabled(); + } +#endif + } + + delta_startup_time("set resource limits"); + +#ifdef NETDATA_INTERNAL_CHECKS + if(debug_flags != 0) { + struct rlimit rl = { RLIM_INFINITY, RLIM_INFINITY }; + if(setrlimit(RLIMIT_CORE, &rl) != 0) + netdata_log_error("Cannot request unlimited core dumps for debugging... Proceeding anyway..."); +#ifdef HAVE_SYS_PRCTL_H + prctl(PR_SET_DUMPABLE, 1, 0, 0, 0); +#endif + } +#endif /* NETDATA_INTERNAL_CHECKS */ + + set_nofile_limit(&rlimit_nofile); + + delta_startup_time("become daemon"); + + // fork, switch user, create pid file, set process priority + if(become_daemon(dont_fork, user) == -1) + fatal("Cannot daemonize myself."); + + // The "HOME" env var points to the root's home dir because Netdata starts as root. Can't use "HOME". + struct passwd *pw = getpwuid(getuid()); + if (config_exists(CONFIG_SECTION_DIRECTORIES, "home") || !pw || !pw->pw_dir) { + netdata_configured_home_dir = config_get(CONFIG_SECTION_DIRECTORIES, "home", netdata_configured_home_dir); + } else { + netdata_configured_home_dir = config_get(CONFIG_SECTION_DIRECTORIES, "home", pw->pw_dir); + } + + setenv("HOME", netdata_configured_home_dir, 1); + + dyn_conf_init(); + + netdata_log_info("netdata started on pid %d.", getpid()); + + delta_startup_time("initialize threads after fork"); + + netdata_threads_init_after_fork((size_t)config_get_number(CONFIG_SECTION_GLOBAL, "pthread stack size", (long)default_stacksize)); + + // initialize internal registry + delta_startup_time("initialize registry"); + registry_init(); + + // fork the spawn server + delta_startup_time("fork the spawn server"); + spawn_init(); + + /* + * Libuv uv_spawn() uses SIGCHLD internally: + * https://github.com/libuv/libuv/blob/cc51217a317e96510fbb284721d5e6bc2af31e33/src/unix/process.c#L485 + * and inadvertently replaces the netdata signal handler which was setup during initialization. + * Thusly, we must explicitly restore the signal handler for SIGCHLD. + * Warning: extreme care is needed when mixing and matching POSIX and libuv. + */ + signals_restore_SIGCHLD(); + + // ------------------------------------------------------------------------ + // initialize rrd, registry, health, rrdpush, etc. + + delta_startup_time("collecting system info"); + + netdata_anonymous_statistics_enabled=-1; + struct rrdhost_system_info *system_info = callocz(1, sizeof(struct rrdhost_system_info)); + __atomic_sub_fetch(&netdata_buffers_statistics.rrdhost_allocations_size, sizeof(struct rrdhost_system_info), __ATOMIC_RELAXED); + get_system_info(system_info); + (void) registry_get_this_machine_guid(); + system_info->hops = 0; + get_install_type(&system_info->install_type, &system_info->prebuilt_arch, &system_info->prebuilt_dist); + + delta_startup_time("initialize RRD structures"); + + if(rrd_init(netdata_configured_hostname, system_info, false)) { + set_late_global_environment(system_info); + fatal("Cannot initialize localhost instance with name '%s'.", netdata_configured_hostname); + } + + delta_startup_time("check for incomplete shutdown"); + + char agent_crash_file[FILENAME_MAX + 1]; + char agent_incomplete_shutdown_file[FILENAME_MAX + 1]; + snprintfz(agent_incomplete_shutdown_file, FILENAME_MAX, "%s/.agent_incomplete_shutdown", netdata_configured_varlib_dir); + int incomplete_shutdown_detected = (unlink(agent_incomplete_shutdown_file) == 0); + snprintfz(agent_crash_file, FILENAME_MAX, "%s/.agent_crash", netdata_configured_varlib_dir); + int crash_detected = (unlink(agent_crash_file) == 0); + int fd = open(agent_crash_file, O_WRONLY | O_CREAT | O_TRUNC, 444); + if (fd >= 0) + close(fd); + + + // ------------------------------------------------------------------------ + // Claim netdata agent to a cloud endpoint + + delta_startup_time("collect claiming info"); + + if (claiming_pending_arguments) + claim_agent(claiming_pending_arguments, false, NULL); + load_claiming_state(); + + // ------------------------------------------------------------------------ + // enable log flood protection + + nd_log_limits_reset(); + + // Load host labels + delta_startup_time("collect host labels"); + reload_host_labels(); + + // ------------------------------------------------------------------------ + // spawn the threads + + delta_startup_time("start the static threads"); + + web_server_config_options(); + + netdata_zero_metrics_enabled = config_get_boolean_ondemand(CONFIG_SECTION_DB, "enable zero metrics", CONFIG_BOOLEAN_NO); + + set_late_global_environment(system_info); + for (i = 0; static_threads[i].name != NULL ; i++) { + struct netdata_static_thread *st = &static_threads[i]; + + if(st->enabled) { + st->thread = mallocz(sizeof(netdata_thread_t)); + netdata_log_debug(D_SYSTEM, "Starting thread %s.", st->name); + netdata_thread_create(st->thread, st->name, NETDATA_THREAD_OPTION_DEFAULT, st->start_routine, st); + } + else + netdata_log_debug(D_SYSTEM, "Not starting thread %s.", st->name); + } + ml_start_threads(); + + // ------------------------------------------------------------------------ + // Initialize netdata agent command serving from cli and signals + + delta_startup_time("initialize commands API"); + + commands_init(); + + delta_startup_time("ready"); + + usec_t ready_ut = now_monotonic_usec(); + netdata_log_info("NETDATA STARTUP: completed in %llu ms. Enjoy real-time performance monitoring!", (ready_ut - started_ut) / USEC_PER_MS); + netdata_ready = true; + + send_statistics("START", "-", "-"); + if (crash_detected) + send_statistics("CRASH", "-", "-"); + if (incomplete_shutdown_detected) + send_statistics("INCOMPLETE_SHUTDOWN", "-", "-"); + + //check if ANALYTICS needs to start + if (netdata_anonymous_statistics_enabled == 1) { + for (i = 0; static_threads[i].name != NULL; i++) { + if (!strncmp(static_threads[i].name, "ANALYTICS", 9)) { + struct netdata_static_thread *st = &static_threads[i]; + st->thread = mallocz(sizeof(netdata_thread_t)); + st->enabled = 1; + netdata_log_debug(D_SYSTEM, "Starting thread %s.", st->name); + netdata_thread_create(st->thread, st->name, NETDATA_THREAD_OPTION_DEFAULT, st->start_routine, st); + } + } + } + + // ------------------------------------------------------------------------ + // Report ACLK build failure +#ifndef ENABLE_ACLK + netdata_log_error("This agent doesn't have ACLK."); + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s/.aclk_report_sent", netdata_configured_varlib_dir); + if (netdata_anonymous_statistics_enabled > 0 && access(filename, F_OK)) { // -1 -> not initialized + send_statistics("ACLK_DISABLED", "-", "-"); + int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 444); + if (fd == -1) + netdata_log_error("Cannot create file '%s'. Please fix this.", filename); + else + close(fd); + } +#endif + + // ------------------------------------------------------------------------ + // initialize WebRTC + + webrtc_initialize(); + + // ------------------------------------------------------------------------ + // unblock signals + + signals_unblock(); + + // ------------------------------------------------------------------------ + // Handle signals + + signals_handle(); + + // should never reach this point + // but we need it for rpmlint #2752 + return 1; +} -- cgit v1.2.3