// SPDX-License-Identifier: GPL-3.0-or-later #include "common.h" #include "buildinfo.h" int netdata_zero_metrics_enabled; int netdata_anonymous_statistics_enabled; 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 } }; void netdata_cleanup_and_exit(int ret) { // enabling this, is wrong // because the threads will be cancelled while cleaning up // netdata_exit = 1; error_log_limit_unlimited(); info("EXIT: netdata prepares to exit with code %d...", ret); send_statistics("EXIT", ret?"ERROR":"OK","-"); char agent_crash_file[FILENAME_MAX + 1]; snprintfz(agent_crash_file, FILENAME_MAX, "%s/.agent_crash", netdata_configured_varlib_dir); (void) unlink(agent_crash_file); // cleanup/save the database and exit info("EXIT: cleaning up the database..."); rrdhost_cleanup_all(); if(!ret) { // exit cleanly // stop everything info("EXIT: stopping static threads..."); cancel_main_threads(); // free the database info("EXIT: freeing database memory..."); #ifdef ENABLE_DBENGINE rrdeng_prepare_exit(&multidb_ctx); #endif rrdhost_free_all(); #ifdef ENABLE_DBENGINE rrdeng_exit(&multidb_ctx); #endif } sql_close_database(); // unlink the pid if(pidfile[0]) { info("EXIT: removing netdata PID file '%s'...", pidfile); if(unlink(pidfile) != 0) error("EXIT: cannot unlink pidfile '%s'.", pidfile); } #ifdef ENABLE_HTTPS security_clean_openssl(); #endif info("EXIT: all done - netdata is now exiting - bye bye..."); exit(ret); } struct netdata_static_thread static_threads[] = { NETDATA_PLUGIN_HOOK_CHECKS NETDATA_PLUGIN_HOOK_FREEBSD NETDATA_PLUGIN_HOOK_MACOS // linux internal plugins NETDATA_PLUGIN_HOOK_LINUX_PROC NETDATA_PLUGIN_HOOK_LINUX_DISKSPACE NETDATA_PLUGIN_HOOK_LINUX_CGROUPS NETDATA_PLUGIN_HOOK_LINUX_TC NETDATA_PLUGIN_HOOK_IDLEJITTER NETDATA_PLUGIN_HOOK_STATSD #if defined(ENABLE_ACLK) || defined(ACLK_NG) NETDATA_ACLK_HOOK #endif // common plugins for all systems {"BACKENDS", NULL, NULL, 1, NULL, NULL, backends_main}, {"EXPORTING", NULL, NULL, 1, NULL, NULL, exporting_main}, {"WEB_SERVER[static1]", NULL, NULL, 0, NULL, NULL, socket_listen_main_static_threaded}, {"STREAM", NULL, NULL, 0, NULL, NULL, rrdpush_sender_thread}, NETDATA_PLUGIN_HOOK_PLUGINSD NETDATA_PLUGIN_HOOK_HEALTH {NULL, NULL, NULL, 0, NULL, NULL, NULL} }; 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)) 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); 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); 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); 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); 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); 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); 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); web_allow_mgmt_dns = make_dns_decision(CONFIG_SECTION_WEB, "allow management by dns","heuristic",web_allow_mgmt_from); #ifdef NETDATA_WITH_ZLIB 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 { 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) { 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) { 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; } #endif /* NETDATA_WITH_ZLIB */ } // killpid kills pid with SIGTERM. int killpid(pid_t pid) { int ret; debug(D_EXIT, "Request to kill pid %d", pid); errno = 0; ret = kill(pid, SIGTERM); if (ret == -1) { switch(errno) { case ESRCH: // We wanted the process to exit so just let the caller handle. return ret; case EPERM: error("Cannot kill pid %d, but I do not have enough permissions.", pid); break; default: error("Cannot kill pid %d, but I received an error.", pid); break; } } return ret; } void cancel_main_threads() { error_log_limit_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) { info("EXIT: Stopping main thread: %s", static_threads[i].name); netdata_thread_cancel(*static_threads[i].thread); found++; } } netdata_exit = 1; while(found && max > 0) { max -= step; 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) error("Main thread %s takes too long to exit. Giving up...", static_threads[i].name); } } else info("All threads finished."); } 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) 2016-2020, 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/linuxnetdata\n" " Facebook : https://www.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" #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\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" " of F MiB and exit.\n\n" #endif " -W set section option value\n" " set netdata.conf option from the command line.\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; } // TODO: Remove this function with the nix major release. void remove_option(int opt_index, int *argc, char **argv) { int i; // remove the options. do { *argc = *argc - 1; for(i = opt_index; i < *argc; i++) { argv[i] = argv[i+1]; } i = opt_index; } while(argv[i][0] != '-' && opt_index >= *argc); } static const char *verify_required_directory(const char *dir) { if(chdir(dir) == -1) fatal("Cannot cd to directory '%s'", dir); DIR *d = opendir(dir); if(!d) fatal("Cannot examine the contents of directory '%s'", dir); closedir(d); return dir; } #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); security_key = config_get(CONFIG_SECTION_WEB, "ssl key", filename); snprintfz(filename, FILENAME_MAX, "%s/ssl/cert.pem",netdata_configured_user_config_dir); 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"); security_openssl_library(); } #endif static void log_init(void) { char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s/debug.log", netdata_configured_log_dir); stdout_filename = config_get(CONFIG_SECTION_GLOBAL, "debug log", filename); snprintfz(filename, FILENAME_MAX, "%s/error.log", netdata_configured_log_dir); stderr_filename = config_get(CONFIG_SECTION_GLOBAL, "error log", filename); snprintfz(filename, FILENAME_MAX, "%s/access.log", netdata_configured_log_dir); stdaccess_filename = config_get(CONFIG_SECTION_GLOBAL, "access log", filename); char deffacility[8]; snprintfz(deffacility,7,"%s","daemon"); facility_log = config_get(CONFIG_SECTION_GLOBAL, "facility log", deffacility); error_log_throttle_period = config_get_number(CONFIG_SECTION_GLOBAL, "errors flood protection period", error_log_throttle_period); error_log_errors_per_period = (unsigned long)config_get_number(CONFIG_SECTION_GLOBAL, "errors to trigger flood protection", (long long int)error_log_errors_per_period); error_log_errors_per_period_backup = error_log_errors_per_period; setenv("NETDATA_ERRORS_THROTTLE_PERIOD", config_get(CONFIG_SECTION_GLOBAL, "errors flood protection period" , ""), 1); setenv("NETDATA_ERRORS_PER_PERIOD", config_get(CONFIG_SECTION_GLOBAL, "errors to trigger flood protection", ""), 1); } char *initialize_lock_directory_path(char *prefix) { char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s/lock", prefix); return config_get(CONFIG_SECTION_GLOBAL, "lock directory", 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, "web files owner", CONFIG_SECTION_WEB, "web files owner"); config_move(CONFIG_SECTION_GLOBAL, "web files group", CONFIG_SECTION_WEB, "web files group"); config_move(CONFIG_SECTION_BACKEND, "opentsdb host tags", CONFIG_SECTION_BACKEND, "host tags"); } static void get_netdata_configured_variables() { backwards_compatible_config(); // ------------------------------------------------------------------------ // get the hostname char buf[HOSTNAME_MAX + 1]; if(gethostname(buf, HOSTNAME_MAX) == -1){ error("Cannot get machine hostname."); } netdata_configured_hostname = config_get(CONFIG_SECTION_GLOBAL, "hostname", buf); debug(D_OPTIONS, "hostname set to '%s'", netdata_configured_hostname); // ------------------------------------------------------------------------ // get default database size default_rrd_history_entries = (int) config_get_number(CONFIG_SECTION_GLOBAL, "history", 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_GLOBAL, "history", h); default_rrd_history_entries = (int)h; } if(default_rrd_history_entries < 5 || default_rrd_history_entries > RRD_HISTORY_ENTRIES_MAX) { error("Invalid history entries %d given. Defaulting to %d.", default_rrd_history_entries, RRD_DEFAULT_HISTORY_ENTRIES); default_rrd_history_entries = RRD_DEFAULT_HISTORY_ENTRIES; } // ------------------------------------------------------------------------ // get default database update frequency default_rrd_update_every = (int) config_get_number(CONFIG_SECTION_GLOBAL, "update every", UPDATE_EVERY); if(default_rrd_update_every < 1 || default_rrd_update_every > 600) { error("Invalid data collection frequency (update every) %d given. Defaulting to %d.", default_rrd_update_every, UPDATE_EVERY_MAX); default_rrd_update_every = UPDATE_EVERY; } // ------------------------------------------------------------------------ // get system paths netdata_configured_user_config_dir = config_get(CONFIG_SECTION_GLOBAL, "config directory", netdata_configured_user_config_dir); netdata_configured_stock_config_dir = config_get(CONFIG_SECTION_GLOBAL, "stock config directory", netdata_configured_stock_config_dir); netdata_configured_log_dir = config_get(CONFIG_SECTION_GLOBAL, "log directory", netdata_configured_log_dir); netdata_configured_web_dir = config_get(CONFIG_SECTION_GLOBAL, "web files directory", netdata_configured_web_dir); netdata_configured_cache_dir = config_get(CONFIG_SECTION_GLOBAL, "cache directory", netdata_configured_cache_dir); netdata_configured_varlib_dir = config_get(CONFIG_SECTION_GLOBAL, "lib directory", netdata_configured_varlib_dir); char *env_home=getenv("HOME"); netdata_configured_home_dir = config_get(CONFIG_SECTION_GLOBAL, "home directory", env_home?env_home:netdata_configured_home_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]; } // ------------------------------------------------------------------------ // get default memory mode for the database default_rrd_memory_mode = rrd_memory_mode_id(config_get(CONFIG_SECTION_GLOBAL, "memory mode", rrd_memory_mode_name(default_rrd_memory_mode))); #ifdef ENABLE_DBENGINE // ------------------------------------------------------------------------ // get default Database Engine page cache size in MiB default_rrdeng_page_cache_mb = (int) config_get_number(CONFIG_SECTION_GLOBAL, "page cache size", default_rrdeng_page_cache_mb); if(default_rrdeng_page_cache_mb < RRDENG_MIN_PAGE_CACHE_SIZE_MB) { 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; } // ------------------------------------------------------------------------ // get default Database Engine disk space quota in MiB default_rrdeng_disk_quota_mb = (int) config_get_number(CONFIG_SECTION_GLOBAL, "dbengine disk space", default_rrdeng_disk_quota_mb); if(default_rrdeng_disk_quota_mb < RRDENG_MIN_DISK_SPACE_MB) { 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; } default_multidb_disk_quota_mb = (int) config_get_number(CONFIG_SECTION_GLOBAL, "dbengine multihost disk space", compute_multidb_diskspace()); if(default_multidb_disk_quota_mb < RRDENG_MIN_DISK_SPACE_MB) { 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; } #endif // ------------------------------------------------------------------------ netdata_configured_host_prefix = config_get(CONFIG_SECTION_GLOBAL, "host access prefix", ""); verify_netdata_host_prefix(); // -------------------------------------------------------------------- // get KSM settings #ifdef MADV_MERGEABLE enable_ksm = config_get_boolean(CONFIG_SECTION_GLOBAL, "memory deduplication (ksm)", enable_ksm); #endif // -------------------------------------------------------------------- // get various system parameters get_system_HZ(); get_system_cpus(); get_system_pid_max(); } static void get_system_timezone(void) { // avoid flood calls to stat(/etc/localtime) // http://stackoverflow.com/questions/4554271/how-to-avoid-excessive-stat-etc-localtime-calls-in-strftime-on-linux const char *tz = getenv("TZ"); if(!tz || !*tz) setenv("TZ", config_get(CONFIG_SECTION_GLOBAL, "TZ environment variable", ":/etc/localtime"), 0); char buffer[FILENAME_MAX + 1] = ""; const char *timezone = NULL; ssize_t ret; // use the TZ variable if(tz && *tz && *tz != ':') { timezone = tz; // info("TIMEZONE: using TZ variable '%s'", timezone); } // use the contents of /etc/timezone if(!timezone && !read_file("/etc/timezone", buffer, FILENAME_MAX)) { timezone = buffer; // info("TIMEZONE: using the contents of /etc/timezone: '%s'", timezone); } // read the link /etc/localtime if(!timezone) { ret = readlink("/etc/localtime", buffer, FILENAME_MAX); if(ret > 0) { buffer[ret] = '\0'; char *cmp = "/usr/share/zoneinfo/"; size_t cmp_len = strlen(cmp); char *s = strstr(buffer, cmp); if (s && s[cmp_len]) { timezone = &s[cmp_len]; // info("TIMEZONE: using the link of /etc/localtime: '%s'", timezone); } } else buffer[0] = '\0'; } // find the timezone from strftime() if(!timezone) { time_t t; struct tm *tmp, tmbuf; t = now_realtime_sec(); tmp = localtime_r(&t, &tmbuf); if (tmp != NULL) { if(strftime(buffer, FILENAME_MAX, "%Z", tmp) == 0) buffer[0] = '\0'; else { buffer[FILENAME_MAX] = '\0'; timezone = buffer; // info("TIMEZONE: using strftime(): '%s'", timezone); } } } if(timezone && *timezone) { // make sure it does not have illegal characters // info("TIMEZONE: fixing '%s'", timezone); size_t len = strlen(timezone); char tmp[len + 1]; char *d = tmp; *d = '\0'; while(*timezone) { if(isalnum(*timezone) || *timezone == '_' || *timezone == '/') *d++ = *timezone++; else timezone++; } *d = '\0'; strncpyz(buffer, tmp, len); timezone = buffer; // info("TIMEZONE: fixed as '%s'", timezone); } if(!timezone || !*timezone) timezone = "unknown"; netdata_configured_timezone = config_get(CONFIG_SECTION_GLOBAL, "timezone", timezone); } void set_global_environment() { { char b[16]; snprintfz(b, 15, "%d", default_rrd_update_every); setenv("NETDATA_UPDATE_EVERY", b, 1); } setenv("NETDATA_VERSION" , program_version, 1); setenv("NETDATA_HOSTNAME" , netdata_configured_hostname, 1); setenv("NETDATA_CONFIG_DIR" , verify_required_directory(netdata_configured_user_config_dir), 1); setenv("NETDATA_USER_CONFIG_DIR" , verify_required_directory(netdata_configured_user_config_dir), 1); setenv("NETDATA_STOCK_CONFIG_DIR" , verify_required_directory(netdata_configured_stock_config_dir), 1); setenv("NETDATA_PLUGINS_DIR" , verify_required_directory(netdata_configured_primary_plugins_dir), 1); setenv("NETDATA_WEB_DIR" , verify_required_directory(netdata_configured_web_dir), 1); setenv("NETDATA_CACHE_DIR" , verify_required_directory(netdata_configured_cache_dir), 1); setenv("NETDATA_LIB_DIR" , verify_required_directory(netdata_configured_varlib_dir), 1); setenv("NETDATA_LOCK_DIR" , netdata_configured_lock_dir, 1); setenv("NETDATA_LOG_DIR" , verify_required_directory(netdata_configured_log_dir), 1); setenv("HOME" , verify_required_directory(netdata_configured_home_dir), 1); setenv("NETDATA_HOST_PREFIX" , netdata_configured_host_prefix, 1); char *default_port = appconfig_get(&netdata_config, CONFIG_SECTION_WEB, "default port", NULL); int clean = 0; if (!default_port) { default_port = strdupz("19999"); clean = 1; } setenv("NETDATA_LISTEN_PORT" , default_port, 1); if(clean) freez(default_port); get_system_timezone(); // set the path we need char path[1024 + 1], *p = getenv("PATH"); if(!p) p = "/bin:/usr/bin"; snprintfz(path, 1024, "%s:%s", p, "/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin"); setenv("PATH", config_get(CONFIG_SECTION_PLUGINS, "PATH environment variable", path), 1); // python options p = getenv("PYTHONPATH"); if(!p) p = ""; setenv("PYTHONPATH", config_get(CONFIG_SECTION_PLUGINS, "PYTHONPATH environment variable", p), 1); // disable buffering for python plugins setenv("PYTHONUNBUFFERED", "1", 1); // switch to standard locale for plugins setenv("LC_ALL", "C", 1); } static int load_netdata_conf(char *filename, char overwrite_used) { errno = 0; int ret = 0; if(filename && *filename) { ret = config_load(filename, overwrite_used, NULL); if(!ret) 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) { 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) info("CONFIG: cannot load stock config '%s'. Running with internal defaults.", filename); } freez(filename); } 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)) { info("System info script %s not found.",script); freez(script); return 1; } pid_t command_pid; info("Executing %s", script); FILE *fp = mypopen(script, &command_pid); if(fp) { 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) != 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))) { info("Unexpected environment variable %s=%s", line, value); } else { info("%s=%s", line, value); setenv(line, value, 1); } } } mypclose(fp, command_pid); } freez(script); return 0; } void send_statistics( const char *action, const char *action_result, const char *action_data) { static char *as_script; if (netdata_anonymous_statistics_enabled == -1) { char *optout_file = mallocz(sizeof(char) * (strlen(netdata_configured_user_config_dir) +strlen(".opt-out-from-anonymous-statistics") + 2)); sprintf(optout_file, "%s/%s", netdata_configured_user_config_dir, ".opt-out-from-anonymous-statistics"); if (likely(access(optout_file, R_OK) != 0)) { as_script = mallocz(sizeof(char) * (strlen(netdata_configured_primary_plugins_dir) + strlen("anonymous-statistics.sh") + 2)); sprintf(as_script, "%s/%s", netdata_configured_primary_plugins_dir, "anonymous-statistics.sh"); if (unlikely(access(as_script, R_OK) != 0)) { netdata_anonymous_statistics_enabled=0; info("Anonymous statistics script %s not found.",as_script); freez(as_script); } else { netdata_anonymous_statistics_enabled=1; } } else { netdata_anonymous_statistics_enabled = 0; as_script = NULL; } freez(optout_file); } if(!netdata_anonymous_statistics_enabled) return; if (!action) return; if (!action_result) action_result=""; if (!action_data) action_data=""; char *command_to_run=mallocz(sizeof(char) * (strlen(action) + strlen(action_result) + strlen(action_data) + strlen(as_script) + 10)); pid_t command_pid; sprintf(command_to_run,"%s '%s' '%s' '%s'", as_script, action, action_result, action_data); info("%s", command_to_run); FILE *fp = mypopen(command_to_run, &command_pid); if(fp) { char buffer[100 + 1]; while (fgets(buffer, 100, fp) != NULL); mypclose(fp, command_pid); } freez(command_to_run); } 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. */ 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:""); } // -------------------------------------------------------------------- // Check if the cloud is enabled #if defined( DISABLE_CLOUD ) || !defined( ENABLE_ACLK ) netdata_cloud_setting = 0; #else netdata_cloud_setting = appconfig_get_boolean(&cloud_config, CONFIG_SECTION_GLOBAL, "enabled", 1); #endif // This must be set before any point in the code that accesses it. Do not move it from this function. appconfig_get(&cloud_config, CONFIG_SECTION_GLOBAL, "cloud base url", DEFAULT_CLOUD_BASE_URL); } int main(int argc, char **argv) { int i; int config_loaded = 0; int dont_fork = 0; size_t default_stacksize; char *user = NULL; netdata_ready=0; // set the name for logging program_name = "netdata"; // parse depercated options // TODO: Remove this block with the next major release. { i = 1; while(i < argc) { if(strcmp(argv[i], "-pidfile") == 0 && (i+1) < argc) { strncpyz(pidfile, argv[i+1], FILENAME_MAX); fprintf(stderr, "%s: deprecated option -- %s -- please use -P instead.\n", argv[0], argv[i]); remove_option(i, &argc, argv); } else if(strcmp(argv[i], "-nodaemon") == 0 || strcmp(argv[i], "-nd") == 0) { dont_fork = 1; fprintf(stderr, "%s: deprecated option -- %s -- please use -D instead.\n ", argv[0], argv[i]); remove_option(i, &argc, argv); } else if(strcmp(argv[i], "-ch") == 0 && (i+1) < argc) { config_set(CONFIG_SECTION_GLOBAL, "host access prefix", argv[i+1]); fprintf(stderr, "%s: deprecated option -- %s -- please use -s instead.\n", argv[0], argv[i]); remove_option(i, &argc, argv); } else if(strcmp(argv[i], "-l") == 0 && (i+1) < argc) { config_set(CONFIG_SECTION_GLOBAL, "history", argv[i+1]); fprintf(stderr, "%s: deprecated option -- %s -- This option will be removed with V2.*.\n", argv[0], argv[i]); remove_option(i, &argc, argv); } else i++; } } 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) != 1) { error("Cannot load configuration file %s.", optarg); return 1; } else { debug(D_OPTIONS, "Configuration loaded from %s.", optarg); post_conf_load(&user); 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="; #endif if(strcmp(optarg, "unittest") == 0) { if(unit_test_buffer()) return 1; if(unit_test_str2ld()) 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; registry_init(); if(rrd_init("unittest", NULL)) { 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 fprintf(stderr, "\n\nALL TESTS PASSED\n\n"); return 0; } #ifdef ENABLE_DBENGINE else if(strncmp(optarg, createdataset_string, strlen(createdataset_string)) == 0) { optarg += strlen(createdataset_string); unsigned history_seconds = strtoul(optarg, NULL, 0); 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; 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); 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 *heystack = argv[optind]; const char *needle = argv[optind + 1]; size_t len = strlen(needle) + 1; char wildcarded[len]; SIMPLE_PATTERN *p = simple_pattern_create(heystack, NULL, SIMPLE_PATTERN_EXACT); int ret = simple_pattern_matches_extract(p, needle, wildcarded, len); simple_pattern_free(p); if(ret) { fprintf(stdout, "RESULT: MATCHED - pattern '%s' matches '%s', wildcarded '%s'\n", heystack, needle, wildcarded); return 0; } else { fprintf(stdout, "RESULT: NOT MATCHED - pattern '%s' does not match '%s', wildcarded '%s'\n", heystack, 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_GLOBAL, "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); post_conf_load(&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); post_conf_load(&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) { printf("Version: %s %s\n", program_name, program_version); print_build_info(); return 0; } else if(strcmp(optarg, "buildinfojson") == 0) { print_build_info_json(); return 0; } else { fprintf(stderr, "Unknown -W parameter '%s'\n", optarg); return help(1); } } break; default: /* ? */ fprintf(stderr, "Unknown parameter '%c'\n", opt); return help(1); } } } #ifdef _SC_OPEN_MAX // close all open file descriptors, except the standard ones // the caller may have left open files (lxc-attach has this issue) { int fd; for(fd = (int) (sysconf(_SC_OPEN_MAX) - 1); fd > 2; fd--) if(fd_is_valid(fd)) close(fd); } #endif if(!config_loaded) { load_netdata_conf(NULL, 0); post_conf_load(&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); #endif test_clock_boottime(); test_clock_monotonic_coarse(); // 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_GLOBAL, "debug flags", "0x0000000000000000"); setenv("NETDATA_DEBUG_FLAGS", flags, 1); debug_flags = strtoull(flags, NULL, 0); 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) 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(); error_log_limit_unlimited(); // -------------------------------------------------------------------- // 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(); // -------------------------------------------------------------------- // setup process signals // block signals while initializing threads. // this causes the threads to block signals. signals_block(); // setup the signals we want to use signals_init(); // setup threads configs default_stacksize = netdata_threads_init(); // -------------------------------------------------------------------- // check which threads are enabled and initialize them 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(); } // -------------------------------------------------------------------- // create the listening sockets web_client_api_v1_init(); web_server_threading_selection(); if(web_server_mode != WEB_SERVER_MODE_NONE) api_listen_sockets_setup(); } // initialize the log files open_all_log_files(); #ifdef NETDATA_INTERNAL_CHECKS if(debug_flags != 0) { struct rlimit rl = { RLIM_INFINITY, RLIM_INFINITY }; if(setrlimit(RLIMIT_CORE, &rl) != 0) 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 */ // get the max file limit if(getrlimit(RLIMIT_NOFILE, &rlimit_nofile) != 0) error("getrlimit(RLIMIT_NOFILE) failed"); else info("resources control: allowed file descriptors: soft = %zu, max = %zu", (size_t)rlimit_nofile.rlim_cur, (size_t)rlimit_nofile.rlim_max); // fork, switch user, create pid file, set process priority if(become_daemon(dont_fork, user) == -1) fatal("Cannot daemonize myself."); info("netdata started on pid %d.", getpid()); // IMPORTANT: these have to run once, while single threaded // but after we have switched user web_files_uid(); web_files_gid(); netdata_threads_init_after_fork((size_t)config_get_number(CONFIG_SECTION_GLOBAL, "pthread stack size", (long)default_stacksize)); // initialyze internal registry registry_init(); // 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. netdata_anonymous_statistics_enabled=-1; struct rrdhost_system_info *system_info = calloc(1, sizeof(struct rrdhost_system_info)); get_system_info(system_info); if(rrd_init(netdata_configured_hostname, system_info)) fatal("Cannot initialize localhost instance with name '%s'.", netdata_configured_hostname); char agent_crash_file[FILENAME_MAX + 1]; 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 if (claiming_pending_arguments) claim_agent(claiming_pending_arguments); load_claiming_state(); // ------------------------------------------------------------------------ // enable log flood protection error_log_limit_reset(); // Load host labels reload_host_labels(); // ------------------------------------------------------------------------ // spawn the threads web_server_config_options(); netdata_zero_metrics_enabled = config_get_boolean_ondemand(CONFIG_SECTION_GLOBAL, "enable zero metrics", CONFIG_BOOLEAN_NO); 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)); debug(D_SYSTEM, "Starting thread %s.", st->name); netdata_thread_create(st->thread, st->name, NETDATA_THREAD_OPTION_DEFAULT, st->start_routine, st); } else debug(D_SYSTEM, "Not starting thread %s.", st->name); } // ------------------------------------------------------------------------ // Initialize netdata agent command serving from cli and signals commands_init(); info("netdata initialization completed. Enjoy real-time performance monitoring!"); netdata_ready = 1; send_statistics("START", "-", "-"); if (crash_detected) send_statistics("CRASH", "-", "-"); // ------------------------------------------------------------------------ // Report ACLK build failure #ifndef ENABLE_ACLK 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", "-", "-"); #ifdef ACLK_NO_LWS send_statistics("BUILD_FAIL_LWS", "-", "-"); #endif #ifdef ACLK_NO_LIBMOSQ send_statistics("BUILD_FAIL_MOSQ", "-", "-"); #endif int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 444); if (fd == -1) error("Cannot create file '%s'. Please fix this.", filename); else close(fd); } #endif // ------------------------------------------------------------------------ // unblock signals signals_unblock(); // ------------------------------------------------------------------------ // Handle signals signals_handle(); // should never reach this point // but we need it for rpmlint #2752 return 1; }