Merging upstream version 1.11.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 1071 deletions

diff --git a/src/main.c b/src/main.c
deleted file mode 100644
index 798c7f0f..00000000
--- a/src/main.c
+++ /dev/null
@@ -1,1071 +0,0 @@
-#include "common.h"
-
-extern void *cgroups_main(void *ptr);
-
-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);
-
-    // cleanup/save the database and exit
-    info("EXIT: cleaning up the database...");
-    rrdhost_cleanup_all();
-
-    if(!ret) {
-        // exit cleanly
-
-        // stop everything
-        info("EXIT: stopping master threads...");
-        cancel_main_threads();
-
-        // free the database
-        info("EXIT: freeing database memory...");
-        rrdhost_free_all();
-    }
-
-    // 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);
-    }
-
-    info("EXIT: all done - netdata is now exiting - bye bye...");
-    exit(ret);
-}
-
-struct netdata_static_thread static_threads[] = {
-
-#ifdef INTERNAL_PLUGIN_NFACCT
-    // nfacct requires root access
-    // so, we build it as an external plugin with setuid to root
-    {"PLUGIN[nfacct]",       CONFIG_SECTION_PLUGINS,  "nfacct",     1, NULL, NULL, nfacct_main},
-#endif
-
-#ifdef NETDATA_INTERNAL_CHECKS
-    // debugging plugin
-    {"PLUGIN[check]",        CONFIG_SECTION_PLUGINS,  "checks",     0, NULL, NULL, checks_main},
-#endif
-
-#if defined(__FreeBSD__)
-    // FreeBSD internal plugins
-    {"PLUGIN[freebsd]",      CONFIG_SECTION_PLUGINS,  "freebsd",    1, NULL, NULL, freebsd_main},
-#elif defined(__APPLE__)
-    // macOS internal plugins
-    {"PLUGIN[macos]",        CONFIG_SECTION_PLUGINS,  "macos",      1, NULL, NULL, macos_main},
-#else
-    // linux internal plugins
-    {"PLUGIN[proc]",         CONFIG_SECTION_PLUGINS,  "proc",       1, NULL, NULL, proc_main},
-    {"PLUGIN[diskspace]",    CONFIG_SECTION_PLUGINS,  "diskspace",  1, NULL, NULL, proc_diskspace_main},
-    {"PLUGIN[cgroup]",       CONFIG_SECTION_PLUGINS,  "cgroups",    1, NULL, NULL, cgroups_main},
-    {"PLUGIN[tc]",           CONFIG_SECTION_PLUGINS,  "tc",         1, NULL, NULL, tc_main},
-#endif /* __FreeBSD__, __APPLE__*/
-
-    // common plugins for all systems
-    {"PLUGIN[idlejitter]",   CONFIG_SECTION_PLUGINS,  "idlejitter", 1, NULL, NULL, cpuidlejitter_main},
-    {"BACKENDS",            NULL,                    NULL,         1, NULL, NULL, backends_main},
-    {"HEALTH",              NULL,                    NULL,         1, NULL, NULL, health_main},
-    {"PLUGINSD",            NULL,                    NULL,         1, NULL, NULL, pluginsd_main},
-    {"WEB_SERVER[multi]",   NULL,                    NULL,         1, NULL, NULL, socket_listen_main_multi_threaded},
-    {"WEB_SERVER[single]",  NULL,                    NULL,         0, NULL, NULL, socket_listen_main_single_threaded},
-    {"WEB_SERVER[static1]", NULL,                    NULL,         0, NULL, NULL, socket_listen_main_static_threaded},
-    {"STREAM",              NULL,                    NULL,         0, NULL, NULL, rrdpush_sender_thread},
-    {"STATSD",              NULL,                    NULL,         1, NULL, NULL, statsd_main},
-
-    {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 multi_threaded = (web_server_mode == WEB_SERVER_MODE_MULTI_THREADED);
-    int single_threaded = (web_server_mode == WEB_SERVER_MODE_SINGLE_THREADED);
-    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_multi_threaded)
-            static_threads[i].enabled = multi_threaded;
-
-        if (static_threads[i].start_routine == socket_listen_main_single_threaded)
-            static_threads[i].enabled = single_threaded;
-
-        if (static_threads[i].start_routine == socket_listen_main_static_threaded)
-            static_threads[i].enabled = static_threaded;
-    }
-}
-
-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);
-
-    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_dashboard_from   = simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow dashboard from", "localhost *"), NULL, SIMPLE_PATTERN_EXACT);
-    web_allow_badges_from      = simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow badges from", "*"), NULL, SIMPLE_PATTERN_EXACT);
-    web_allow_registry_from    = simple_pattern_create(config_get(CONFIG_SECTION_REGISTRY, "allow from", "*"), NULL, SIMPLE_PATTERN_EXACT);
-    web_allow_streaming_from   = simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow streaming from", "*"), NULL, SIMPLE_PATTERN_EXACT);
-    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.*"), NULL, SIMPLE_PATTERN_EXACT);
-
-#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 */
-}
-
-
-int killpid(pid_t pid, int sig)
-{
-    int ret = -1;
-    debug(D_EXIT, "Request to kill pid %d", pid);
-
-    errno = 0;
-    if(kill(pid, 0) == -1) {
-        switch(errno) {
-            case ESRCH:
-                error("Request to kill pid %d, but it is not running.", pid);
-                break;
-
-            case EPERM:
-                error("Request to kill pid %d, but I do not have enough permissions.", pid);
-                break;
-
-            default:
-                error("Request to kill pid %d, but I received an error.", pid);
-                break;
-        }
-    }
-    else {
-        errno = 0;
-        ret = kill(pid, sig);
-        if(ret == -1) {
-            switch(errno) {
-                case ESRCH:
-                    error("Cannot kill pid %d, but it is not running.", pid);
-                    break;
-
-                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, 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 master thread: %s", static_threads[i].name);
-            netdata_thread_cancel(*static_threads[i].thread);
-            found++;
-        }
-    }
-
-    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("Master 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"},
-    { '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) 2016-2017, Costa Tsaousis <costa@tsaousis.gr>\n"
-            " Released under GNU General Public License v3 or later.\n"
-            " All rights reserved.\n"
-            "\n"
-            " Home Page  : https://my-netdata.io\n"
-            " Source Code: https://github.com/firehol/netdata\n"
-            " Wiki / Docs: https://github.com/firehol/netdata/wiki\n"
-            " Support    : https://github.com/firehol/netdata/issues\n"
-            " License    : https://github.com/firehol/netdata/blob/master/LICENSE.md\n"
-            "\n"
-            " Twitter    : https://twitter.com/linuxnetdata\n"
-            " Facebook   : https://www.facebook.com/linuxnetdata/\n"
-            "\n"
-            " netdata is a https://firehol.org project.\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 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"
-    );
-
-    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 = opt_index;
-    // 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;
-}
-
-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);
-
-    error_log_throttle_period_backup =
-    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);
-
-    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);
-}
-
-static void backwards_compatible_config() {
-    // allow existing configurations to work with the current version of netdata
-
-    if(config_exists(CONFIG_SECTION_GLOBAL, "multi threaded web server")) {
-        int mode = config_get_boolean(CONFIG_SECTION_GLOBAL, "multi threaded web server", 1);
-        web_server_mode = (mode)?WEB_SERVER_MODE_MULTI_THREADED:WEB_SERVER_MODE_SINGLE_THREADED;
-    }
-
-    // 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_config_dir  = config_get(CONFIG_SECTION_GLOBAL, "config directory",    CONFIG_DIR);
-    netdata_configured_log_dir     = config_get(CONFIG_SECTION_GLOBAL, "log directory",       LOG_DIR);
-    netdata_configured_web_dir     = config_get(CONFIG_SECTION_GLOBAL, "web files directory", WEB_DIR);
-    netdata_configured_cache_dir   = config_get(CONFIG_SECTION_GLOBAL, "cache directory",     CACHE_DIR);
-    netdata_configured_varlib_dir  = config_get(CONFIG_SECTION_GLOBAL, "lib directory",       VARLIB_DIR);
-    netdata_configured_home_dir    = config_get(CONFIG_SECTION_GLOBAL, "home directory",      CACHE_DIR);
-
-    {
-        char plugins_dirs[(FILENAME_MAX * 2) + 1];
-        snprintfz(plugins_dirs, FILENAME_MAX * 2, "\"%s\" \"%s/custom-plugins.d\"", PLUGINS_DIR, CONFIG_DIR);
-        netdata_configured_plugins_dir_base = strdupz(config_get(CONFIG_SECTION_GLOBAL, "plugins directory",  plugins_dirs));
-        quoted_strings_splitter(netdata_configured_plugins_dir_base, plugin_directories, PLUGINSD_MAX_DIRECTORIES, config_isspace);
-        netdata_configured_plugins_dir = plugin_directories[0];
-    }
-
-    // ------------------------------------------------------------------------
-    // 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)));
-
-    // ------------------------------------------------------------------------
-
-    netdata_configured_host_prefix = config_get(CONFIG_SECTION_GLOBAL, "host access 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_HOSTNAME"   , netdata_configured_hostname, 1);
-    setenv("NETDATA_CONFIG_DIR" , verify_required_directory(netdata_configured_config_dir),  1);
-    setenv("NETDATA_PLUGINS_DIR", verify_required_directory(netdata_configured_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_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);
-
-    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);
-}
-
-int main(int argc, char **argv) {
-    int i;
-    int config_loaded = 0;
-    int dont_fork = 0;
-    size_t default_stacksize;
-
-    // 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++;
-        }
-    }
-
-    // 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(config_load(optarg, 1) != 1) {
-                        error("Cannot load configuration file %s.", optarg);
-                        return 1;
-                    }
-                    else {
-                        debug(D_OPTIONS, "Configuration loaded from %s.", optarg);
-                        config_loaded = 1;
-                    }
-                    break;
-                case 'D':
-                    dont_fork = 1;
-                    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=";
-
-                        if(strcmp(optarg, "unittest") == 0) {
-                            if(unit_test_buffer()) return 1;
-                            if(unit_test_str2ld()) return 1;
-                            //default_rrd_update_every = 1;
-                            //default_rrd_memory_mode = RRD_MEMORY_MODE_RAM;
-                            //if(!config_loaded) config_load(NULL, 0);
-                            get_netdata_configured_variables();
-                            default_rrd_update_every = 1;
-                            default_rrd_memory_mode = RRD_MEMORY_MODE_RAM;
-                            default_health_enabled = 0;
-                            rrd_init("unittest");
-                            default_rrdpush_enabled = 0;
-                            if(run_all_mockup_tests()) return 1;
-                            if(unit_test_storage()) return 1;
-                            fprintf(stderr, "\n\nALL TESTS PASSED\n\n");
-                            return 0;
-                        }
-                        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, "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");
-                                config_load(NULL, 0);
-                            }
-
-                            backwards_compatible_config();
-                            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 {
-                            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)
-        config_load(NULL, 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
-
-        // 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_config_dir) == -1)
-            fatal("Cannot cd to '%s'", netdata_configured_config_dir);
-    }
-
-    char *user = NULL;
-
-    {
-        // --------------------------------------------------------------------
-        // 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();
-
-
-        // --------------------------------------------------------------------
-        // load stream.conf
-        {
-            char filename[FILENAME_MAX + 1];
-            snprintfz(filename, FILENAME_MAX, "%s/stream.conf", netdata_configured_config_dir);
-            appconfig_load(&stream_config, filename, 0);
-        }
-
-
-        // --------------------------------------------------------------------
-        // 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();
-        }
-
-
-        // --------------------------------------------------------------------
-        // 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:"");
-        }
-
-        // --------------------------------------------------------------------
-        // 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", rlimit_nofile.rlim_cur, 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));
-
-    // ------------------------------------------------------------------------
-    // initialize rrd, registry, health, rrdpush, etc.
-
-    rrd_init(netdata_configured_hostname);
-
-
-    // ------------------------------------------------------------------------
-    // enable log flood protection
-
-    error_log_limit_reset();
-
-
-    // ------------------------------------------------------------------------
-    // spawn the threads
-
-    web_server_config_options();
-
-    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);
-    }
-
-    info("netdata initialization completed. Enjoy real-time performance monitoring!");
-
-
-    // ------------------------------------------------------------------------
-    // unblock signals
-
-    signals_unblock();
-
-    // ------------------------------------------------------------------------
-    // Handle signals
-
-    signals_handle();
-
-    // should never reach this point
-    // but we need it for rpmlint #2752
-    return 1;
-}