extern void *cgroups_main(void *ptr);
void netdata_cleanup_and_exit(int ret) {
- netdata_exit = 1;
+ netdata_exit = 1;
- error_log_limit_unlimited();
+ error_log_limit_unlimited();
- info("Called: netdata_cleanup_and_exit()");
-#ifdef NETDATA_INTERNAL_CHECKS
- rrdset_free_all();
-#else
- rrdset_save_all();
-#endif
- // kill_childs();
+ debug(D_EXIT, "Called: netdata_cleanup_and_exit()");
- if(pidfile[0]) {
- if(unlink(pidfile) != 0)
- error("Cannot unlink pidfile '%s'.", pidfile);
- }
+ // save the database
+ rrdset_save_all();
- info("NetData exiting. Bye bye...");
- exit(ret);
-}
-
-struct netdata_static_thread {
- char *name;
+ // unlink the pid
+ if(pidfile[0]) {
+ if(unlink(pidfile) != 0)
+ error("Cannot unlink pidfile '%s'.", pidfile);
+ }
- char *config_section;
- char *config_name;
+#ifdef NETDATA_INTERNAL_CHECKS
+ // kill all childs
+ //kill_childs();
- int enabled;
+ // free database
+ rrdset_free_all();
+#endif
- pthread_t *thread;
+ info("netdata exiting. Bye bye...");
+ exit(ret);
+}
- void (*init_routine) (void);
- void *(*start_routine) (void *);
-} static_threads[] = {
+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
- {"nfacct", "plugins", "nfacct", 1, NULL, NULL, nfacct_main},
+ // so, we build it as an external plugin with setuid to root
+ {"nfacct", "plugins", "nfacct", 1, NULL, NULL, nfacct_main},
#endif
- {"tc", "plugins", "tc", 1, NULL, NULL, tc_main},
- {"idlejitter", "plugins", "idlejitter", 1, NULL, NULL, cpuidlejitter_main},
- {"proc", "plugins", "proc", 1, NULL, NULL, proc_main},
- {"cgroups", "plugins", "cgroups", 1, NULL, NULL, cgroups_main},
- {"plugins.d", NULL, NULL, 1, NULL, NULL, pluginsd_main},
- {"check", "plugins", "checks", 0, NULL, NULL, checks_main},
- {"web", NULL, NULL, 1, NULL, NULL, socket_listen_main_multi_threaded},
- {"web-single-threaded", NULL, NULL, 0, NULL, NULL, socket_listen_main_single_threaded},
- {NULL, NULL, NULL, 0, NULL, NULL, NULL}
+ {"tc", "plugins", "tc", 1, NULL, NULL, tc_main},
+ {"idlejitter", "plugins", "idlejitter", 1, NULL, NULL, cpuidlejitter_main},
+#if defined(__FreeBSD__)
+ {"freebsd", "plugins", "freebsd", 1, NULL, NULL, freebsd_main},
+#elif defined(__APPLE__)
+ {"macos", "plugins", "macos", 1, NULL, NULL, macos_main},
+#else
+ {"proc", "plugins", "proc", 1, NULL, NULL, proc_main},
+ {"diskspace", "plugins", "diskspace", 1, NULL, NULL, proc_diskspace_main},
+ {"cgroups", "plugins", "cgroups", 1, NULL, NULL, cgroups_main},
+#endif /* __FreeBSD__, __APPLE__*/
+ {"check", "plugins", "checks", 0, NULL, NULL, checks_main},
+ {"backends", NULL, NULL, 1, NULL, NULL, backends_main},
+ {"health", NULL, NULL, 1, NULL, NULL, health_main},
+ {"plugins.d", NULL, NULL, 1, NULL, NULL, pluginsd_main},
+ {"web", NULL, NULL, 1, NULL, NULL, socket_listen_main_multi_threaded},
+ {"web-single-threaded", NULL, NULL, 0, NULL, NULL, socket_listen_main_single_threaded},
+ {NULL, NULL, NULL, 0, NULL, NULL, NULL}
};
void web_server_threading_selection(void) {
- int threaded = config_get_boolean("global", "multi threaded web server", 1);
+ int threaded = config_get_boolean("global", "multi threaded web server", 1);
- 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 = threaded?1:0;
+ 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 = threaded?1:0;
- if(static_threads[i].start_routine == socket_listen_main_single_threaded)
- static_threads[i].enabled = threaded?0:1;
- }
+ if(static_threads[i].start_routine == socket_listen_main_single_threaded)
+ static_threads[i].enabled = threaded?0:1;
+ }
- web_client_timeout = (int) config_get_number("global", "disconnect idle web clients after seconds", DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS);
+ web_client_timeout = (int) config_get_number("global", "disconnect idle web clients after seconds", DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS);
- web_donotrack_comply = config_get_boolean("global", "respect web browser do not track policy", web_donotrack_comply);
+ web_donotrack_comply = config_get_boolean("global", "respect web browser do not track policy", web_donotrack_comply);
#ifdef NETDATA_WITH_ZLIB
- web_enable_gzip = config_get_boolean("global", "enable web responses gzip compression", web_enable_gzip);
-
- char *s = config_get("global", "web 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("global", "web 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;
- }
+ web_enable_gzip = config_get_boolean("global", "enable web responses gzip compression", web_enable_gzip);
+
+ char *s = config_get("global", "web 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("global", "web 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;
+ 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 kill_childs()
{
- siginfo_t info;
-
- struct web_client *w;
- for(w = web_clients; w ; w = w->next) {
- debug(D_EXIT, "Stopping web client %s", w->client_ip);
- pthread_cancel(w->thread);
- pthread_join(w->thread, NULL);
- }
-
- int i;
- for (i = 0; static_threads[i].name != NULL ; i++) {
- if(static_threads[i].thread) {
- debug(D_EXIT, "Stopping %s thread", static_threads[i].name);
- pthread_cancel(*static_threads[i].thread);
- pthread_join(*static_threads[i].thread, NULL);
- static_threads[i].thread = NULL;
- }
- }
-
- if(tc_child_pid) {
- info("Killing tc-qos-helper procees");
- if(killpid(tc_child_pid, SIGTERM) != -1)
- waitid(P_PID, (id_t) tc_child_pid, &info, WEXITED);
- }
- tc_child_pid = 0;
-
- struct plugind *cd;
- for(cd = pluginsd_root ; cd ; cd = cd->next) {
- debug(D_EXIT, "Stopping %s plugin thread", cd->id);
- pthread_cancel(cd->thread);
- pthread_join(cd->thread, NULL);
-
- if(cd->pid && !cd->obsolete) {
- debug(D_EXIT, "killing %s plugin process", cd->id);
- if(killpid(cd->pid, SIGTERM) != -1)
- waitid(P_PID, (id_t) cd->pid, &info, WEXITED);
- }
- }
-
- // if, for any reason there is any child exited
- // catch it here
- waitid(P_PID, 0, &info, WEXITED|WNOHANG);
-
- debug(D_EXIT, "All threads/childs stopped.");
+ error_log_limit_unlimited();
+
+ siginfo_t info;
+
+ struct web_client *w;
+ for(w = web_clients; w ; w = w->next) {
+ info("Stopping web client %s", w->client_ip);
+ pthread_cancel(w->thread);
+ // it is detached
+ // pthread_join(w->thread, NULL);
+
+ w->obsolete = 1;
+ }
+
+ int i;
+ for (i = 0; static_threads[i].name != NULL ; i++) {
+ if(static_threads[i].enabled) {
+ info("Stopping %s thread", static_threads[i].name);
+ pthread_cancel(*static_threads[i].thread);
+ // it is detached
+ // pthread_join(*static_threads[i].thread, NULL);
+
+ static_threads[i].enabled = 0;
+ }
+ }
+
+ if(tc_child_pid) {
+ info("Killing tc-qos-helper process %d", tc_child_pid);
+ if(killpid(tc_child_pid, SIGTERM) != -1)
+ waitid(P_PID, (id_t) tc_child_pid, &info, WEXITED);
+
+ tc_child_pid = 0;
+ }
+
+ struct plugind *cd;
+ for(cd = pluginsd_root ; cd ; cd = cd->next) {
+ if(cd->enabled && !cd->obsolete) {
+ info("Stopping %s plugin thread", cd->id);
+ pthread_cancel(cd->thread);
+
+ if(cd->pid) {
+ info("killing %s plugin child process pid %d", cd->id, cd->pid);
+ if(killpid(cd->pid, SIGTERM) != -1)
+ waitid(P_PID, (id_t) cd->pid, &info, WEXITED);
+
+ cd->pid = 0;
+ }
+
+ cd->obsolete = 1;
+ }
+ }
+
+ // if, for any reason there is any child exited
+ // catch it here
+ info("Cleaning up an other children");
+ waitid(P_PID, 0, &info, WEXITED|WNOHANG);
+
+ info("All threads/childs stopped.");
}
struct option_def options[] = {
- // opt description arg name default value
- {'c', "Load alternate configuration file", "config_file", CONFIG_DIR "/" CONFIG_FILENAME},
- {'D', "Disable fork into background", NULL, NULL},
- {'h', "Display help message", NULL, NULL},
- {'P', "File to save a pid while running", "FILE", NULL},
- {'i', "The IP address to listen to.", "address", "All addresses"},
- {'p', "Port to listen. Can be from 1 to 65535.", "port_number", "19999"},
- {'s', "Path to access host /proc and /sys when running in a container.", "PATH", NULL},
- {'t', "The frequency in seconds, for data collection. \
-Same as 'update every' config file option.", "seconds", "1"},
- {'u', "System username to run as.", "username", "netdata"},
- {'v', "Version of the program", NULL, NULL},
- {'W', "vendor options.", "stacksize=<size>|unittest|debug_flag", NULL},
+ // 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"},
+ { 'k', "Check health configuration and exit.", NULL, NULL},
+ { '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},
+ { 'W', "See Advanced options below.", "options", NULL},
};
void help(int exitcode) {
- FILE *stream;
- if(exitcode == 0)
- stream = stdout;
- else
- stream = stderr;
-
- int num_opts = sizeof(options) / sizeof(struct option_def);
- int i;
- int max_len_arg = 0;
-
- // Compute maximum argument length
- for( i = 0; i < num_opts; i++ ) {
- if(options[i].arg_name) {
- int len_arg = strlen(options[i].arg_name);
- if(len_arg > max_len_arg) max_len_arg = len_arg;
- }
- }
-
- fprintf(stream, "SYNOPSIS: netdata [options]\n");
- fprintf(stream, "\n");
- fprintf(stream, "Options:\n");
-
- // Output options description.
- for( i = 0; i < num_opts; i++ ) {
- fprintf(stream, " -%c %-*s %s", options[i].val, max_len_arg, options[i].arg_name ? options[i].arg_name : "", options[i].description);
- if(options[i].default_value) {
- fprintf(stream, " Default: %s\n", options[i].default_value);
- } else {
- fprintf(stream, "\n");
- }
- }
-
- fflush(stream);
- exit(exitcode);
+ FILE *stream;
+ if(exitcode == 0)
+ stream = stdout;
+ else
+ stream = stderr;
+
+ int num_opts = sizeof(options) / sizeof(struct option_def);
+ int i;
+ int max_len_arg = 0;
+
+ // Compute maximum argument length
+ for( i = 0; i < num_opts; i++ ) {
+ if(options[i].arg_name) {
+ int len_arg = (int)strlen(options[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 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", options[i].val, max_len_arg, options[i].arg_name ? options[i].arg_name : "", options[i].description);
+ if(options[i].default_value) {
+ fprintf(stream, "\n %c %-*s Default: %s\n", ' ', max_len_arg, "", options[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 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);
+ exit(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);
+ 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;
+}
int main(int argc, char **argv)
{
- int i;
- int config_loaded = 0;
- int dont_fork = 0;
- size_t wanted_stacksize = 0, stacksize = 0;
- pthread_attr_t attr;
-
- // global initialization
- get_HZ();
-
- // set the name for logging
- program_name = "netdata";
-
- // parse command line.
-
- // 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("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("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(options) / sizeof(struct option_def);
- char optstring[(num_opts * 2) + 1];
-
- int string_i = 0;
- for( i = 0; i < num_opts; i++ ) {
- optstring[string_i] = options[i].val;
- string_i++;
- if(options[i].arg_name) {
- optstring[string_i] = ':';
- string_i++;
- }
- }
-
- int opt;
- while( (opt = getopt(argc, argv, optstring)) != -1 ) {
- switch(opt) {
- case 'c':
- if(load_config(optarg, 1) != 1) {
- error("Cannot load configuration file %s.", optarg);
- exit(1);
- }
- else {
- debug(D_OPTIONS, "Configuration loaded from %s.", optarg);
- config_loaded = 1;
- }
- break;
- case 'D':
- dont_fork = 1;
- break;
- case 'h':
- help(0);
- break;
- case 'i':
- config_set("global", "bind to", optarg);
- break;
- case 'P':
- strncpy(pidfile, optarg, FILENAME_MAX);
- pidfile[FILENAME_MAX] = '\0';
- break;
- case 'p':
- config_set("global", "default port", optarg);
- break;
- case 's':
- config_set("global", "host access prefix", optarg);
- break;
- case 't':
- config_set("global", "update every", optarg);
- break;
- case 'u':
- config_set("global", "run as user", optarg);
- break;
- case 'v':
- // TODO: Outsource version to makefile which can compute version from git.
- printf("netdata 1.2.1_master\n");
- return 0;
- break;
- case 'W':
- {
- char* stacksize = "stacksize=";
- char* debug_flags_string = "debug_flags=";
- if(strcmp(optarg, "unittest") == 0) {
- rrd_update_every = 1;
- if(run_all_mockup_tests()) exit(1);
- if(unit_test_storage()) exit(1);
- fprintf(stderr, "\n\nALL TESTS PASSED\n\n");
- exit(0);
- } else if(strncmp(optarg, stacksize, strlen(stacksize)) == 0) {
- optarg += strlen(stacksize);
- config_set("global", "pthread stack size", optarg);
- } else if(strncmp(optarg, debug_flags_string, strlen(debug_flags_string)) == 0) {
- optarg += strlen(debug_flags_string);
- config_set("global", "debug flags", optarg);
- debug_flags = strtoull(optarg, NULL, 0);
- }
- }
- break;
- default: /* ? */
- help(1);
- break;
- }
- }
- }
-
- if(!config_loaded) load_config(NULL, 0);
-
- // prepare configuration environment variables for the plugins
- setenv("NETDATA_CONFIG_DIR" , config_get("global", "config directory" , CONFIG_DIR) , 1);
- setenv("NETDATA_PLUGINS_DIR", config_get("global", "plugins directory" , PLUGINS_DIR), 1);
- setenv("NETDATA_WEB_DIR" , config_get("global", "web files directory", WEB_DIR) , 1);
- setenv("NETDATA_CACHE_DIR" , config_get("global", "cache directory" , CACHE_DIR) , 1);
- setenv("NETDATA_LIB_DIR" , config_get("global", "lib directory" , VARLIB_DIR) , 1);
- setenv("NETDATA_LOG_DIR" , config_get("global", "log directory" , LOG_DIR) , 1);
- setenv("NETDATA_HOST_PREFIX", config_get("global", "host access prefix" , "") , 1);
- setenv("HOME" , config_get("global", "home directory" , CACHE_DIR) , 1);
-
- // disable buffering for python plugins
- setenv("PYTHONUNBUFFERED", "1", 1);
-
- // avoid flood calls to stat(/etc/localtime)
- // http://stackoverflow.com/questions/4554271/how-to-avoid-excessive-stat-etc-localtime-calls-in-strftime-on-linux
- setenv("TZ", ":/etc/localtime", 0);
-
- {
- 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("plugins", "PATH environment variable", path), 1);
- }
-
- // cd to /tmp to avoid any plugins writing files at random places
- if(chdir("/tmp")) error("netdata: ERROR: Cannot cd to /tmp");
-
- char *input_log_file = NULL;
- char *output_log_file = NULL;
- char *error_log_file = NULL;
- char *access_log_file = NULL;
- char *user = NULL;
- {
- char *flags = config_get("global", "debug flags", "0x00000000");
- setenv("NETDATA_DEBUG_FLAGS", flags, 1);
-
- debug_flags = strtoull(flags, NULL, 0);
- debug(D_OPTIONS, "Debug flags set to '0x%8llx'.", debug_flags);
-
- if(debug_flags != 0) {
- struct rlimit rl = { RLIM_INFINITY, RLIM_INFINITY };
- if(setrlimit(RLIMIT_CORE, &rl) != 0)
- info("Cannot request unlimited core dumps for debugging... Proceeding anyway...");
- prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
- }
-
- // --------------------------------------------------------------------
+ char *hostname = "localhost";
+ int i, check_config = 0;
+ int config_loaded = 0;
+ int dont_fork = 0;
+ size_t wanted_stacksize = 0, stacksize = 0;
+ pthread_attr_t attr;
+
+ // 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("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("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(options) / sizeof(struct option_def);
+ char optstring[(num_opts * 2) + 1];
+
+ int string_i = 0;
+ for( i = 0; i < num_opts; i++ ) {
+ optstring[string_i] = options[i].val;
+ string_i++;
+ if(options[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_config(optarg, 1) != 1) {
+ error("Cannot load configuration file %s.", optarg);
+ exit(1);
+ }
+ else {
+ debug(D_OPTIONS, "Configuration loaded from %s.", optarg);
+ config_loaded = 1;
+ }
+ break;
+ case 'D':
+ dont_fork = 1;
+ break;
+ case 'h':
+ help(0);
+ break;
+ case 'i':
+ config_set("global", "bind to", optarg);
+ break;
+ case 'k':
+ dont_fork = 1;
+ check_config = 1;
+ break;
+ case 'P':
+ strncpy(pidfile, optarg, FILENAME_MAX);
+ pidfile[FILENAME_MAX] = '\0';
+ break;
+ case 'p':
+ config_set("global", "default port", optarg);
+ break;
+ case 's':
+ config_set("global", "host access prefix", optarg);
+ break;
+ case 't':
+ config_set("global", "update every", optarg);
+ break;
+ case 'u':
+ config_set("global", "run as user", optarg);
+ break;
+ case 'v':
+ // TODO: Outsource version to makefile which can compute version from git.
+ printf("netdata %s\n", VERSION);
+ return 0;
+ case 'W':
+ {
+ char* stacksize_string = "stacksize=";
+ char* debug_flags_string = "debug_flags=";
+ if(strcmp(optarg, "unittest") == 0) {
+ rrd_update_every = 1;
+ if(run_all_mockup_tests()) exit(1);
+ if(unit_test_storage()) exit(1);
+ fprintf(stderr, "\n\nALL TESTS PASSED\n\n");
+ exit(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"
+ );
+ exit(1);
+ }
+
+ const char *heystack = argv[optind];
+ const char *needle = argv[optind + 1];
+
+ SIMPLE_PATTERN *p = simple_pattern_create(heystack
+ , SIMPLE_PATTERN_EXACT);
+ int ret = simple_pattern_matches(p, needle);
+ simple_pattern_free(p);
+
+ if(ret) {
+ fprintf(stdout, "RESULT: MATCHED - pattern '%s' matches '%s'\n", heystack, needle);
+ exit(0);
+ }
+ else {
+ fprintf(stdout, "RESULT: NOT MATCHED - pattern '%s' does not match '%s'\n", heystack, needle);
+ exit(1);
+ }
+ }
+ else if(strncmp(optarg, stacksize_string, strlen(stacksize_string)) == 0) {
+ optarg += strlen(stacksize_string);
+ config_set("global", "pthread stack size", optarg);
+ }
+ else if(strncmp(optarg, debug_flags_string, strlen(debug_flags_string)) == 0) {
+ optarg += strlen(debug_flags_string);
+ config_set("global", "debug flags", optarg);
+ debug_flags = strtoull(optarg, NULL, 0);
+ }
+ }
+ break;
+ default: /* ? */
+ help(1);
+ break;
+ }
+ }
+ }
+
+ if(!config_loaded)
+ load_config(NULL, 0);
+
+ {
+ char *pmax = config_get("global", "glibc malloc arena max for plugins", "1");
+ if(pmax && *pmax)
+ setenv("MALLOC_ARENA_MAX", pmax, 1);
+
+#if defined(HAVE_C_MALLOPT)
+ int i = config_get_number("global", "glibc malloc arena max for netdata", 1);
+ if(i > 0)
+ mallopt(M_ARENA_MAX, 1);
+#endif
+
+ char *config_dir = config_get("global", "config directory", CONFIG_DIR);
+
+ // prepare configuration environment variables for the plugins
+ setenv("NETDATA_CONFIG_DIR" , verify_required_directory(config_dir) , 1);
+ setenv("NETDATA_PLUGINS_DIR", verify_required_directory(config_get("global", "plugins directory" , PLUGINS_DIR)), 1);
+ setenv("NETDATA_WEB_DIR" , verify_required_directory(config_get("global", "web files directory", WEB_DIR)) , 1);
+ setenv("NETDATA_CACHE_DIR" , verify_required_directory(config_get("global", "cache directory" , CACHE_DIR)) , 1);
+ setenv("NETDATA_LIB_DIR" , verify_required_directory(config_get("global", "lib directory" , VARLIB_DIR)) , 1);
+ setenv("NETDATA_LOG_DIR" , verify_required_directory(config_get("global", "log directory" , LOG_DIR)) , 1);
+
+ setenv("NETDATA_HOST_PREFIX", config_get("global", "host access prefix" , "") , 1);
+ setenv("HOME" , config_get("global", "home directory" , CACHE_DIR) , 1);
+
+ // disable buffering for python plugins
+ setenv("PYTHONUNBUFFERED", "1", 1);
+
+ // avoid flood calls to stat(/etc/localtime)
+ // http://stackoverflow.com/questions/4554271/how-to-avoid-excessive-stat-etc-localtime-calls-in-strftime-on-linux
+ setenv("TZ", ":/etc/localtime", 0);
+
+ // work while we are cd into config_dir
+ // to allow the plugins refer to their config
+ // files using relative filenames
+ if(chdir(config_dir) == -1)
+ fatal("Cannot cd to '%s'", config_dir);
+
+ 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("plugins", "PATH environment variable", path), 1);
+ }
+
+ char *user = NULL;
+ {
+ char *flags = config_get("global", "debug flags", "0x00000000");
+ setenv("NETDATA_DEBUG_FLAGS", flags, 1);
+
+ debug_flags = strtoull(flags, NULL, 0);
+ debug(D_OPTIONS, "Debug flags set to '0x%8llx'.", 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...");
+
+#if !(defined(__FreeBSD__) || defined(__APPLE__))
+ prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
+#endif /* __FreeBSD__ || __APPLE__*/
+ }
+
+ // --------------------------------------------------------------------
#ifdef MADV_MERGEABLE
- enable_ksm = config_get_boolean("global", "memory deduplication (ksm)", enable_ksm);
+ enable_ksm = config_get_boolean("global", "memory deduplication (ksm)", enable_ksm);
#else
#warning "Kernel memory deduplication (KSM) is not available"
#endif
- // --------------------------------------------------------------------
-
-
- global_host_prefix = config_get("global", "host access prefix", "");
- setenv("NETDATA_HOST_PREFIX", global_host_prefix, 1);
-
- // --------------------------------------------------------------------
-
- output_log_file = config_get("global", "debug log", LOG_DIR "/debug.log");
- if(strcmp(output_log_file, "syslog") == 0) {
- output_log_syslog = 1;
- output_log_file = NULL;
- }
- else if(strcmp(output_log_file, "none") == 0) {
- output_log_syslog = 0;
- output_log_file = NULL;
- }
- else output_log_syslog = 0;
-
- // --------------------------------------------------------------------
-
- error_log_file = config_get("global", "error log", LOG_DIR "/error.log");
- if(strcmp(error_log_file, "syslog") == 0) {
- error_log_syslog = 1;
- error_log_file = NULL;
- }
- else if(strcmp(error_log_file, "none") == 0) {
- error_log_syslog = 0;
- error_log_file = NULL;
- // optimization - do not even generate debug log entries
- }
- else error_log_syslog = 0;
-
- error_log_throttle_period = config_get_number("global", "errors flood protection period", error_log_throttle_period);
- setenv("NETDATA_ERRORS_THROTTLE_PERIOD", config_get("global", "errors flood protection period" , ""), 1);
-
- error_log_errors_per_period = (unsigned long)config_get_number("global", "errors to trigger flood protection", error_log_errors_per_period);
- setenv("NETDATA_ERRORS_PER_PERIOD" , config_get("global", "errors to trigger flood protection", ""), 1);
-
- // --------------------------------------------------------------------
-
- access_log_file = config_get("global", "access log", LOG_DIR "/access.log");
- if(strcmp(access_log_file, "syslog") == 0) {
- access_log_syslog = 1;
- access_log_file = NULL;
- }
- else if(strcmp(access_log_file, "none") == 0) {
- access_log_syslog = 0;
- access_log_file = NULL;
- }
- else access_log_syslog = 0;
-
- // --------------------------------------------------------------------
-
- rrd_memory_mode = rrd_memory_mode_id(config_get("global", "memory mode", rrd_memory_mode_name(rrd_memory_mode)));
-
- // --------------------------------------------------------------------
-
- {
- char hostnamebuf[HOSTNAME_MAX + 1];
- if(gethostname(hostnamebuf, HOSTNAME_MAX) == -1)
- error("WARNING: Cannot get machine hostname.");
- hostname = config_get("global", "hostname", hostnamebuf);
- debug(D_OPTIONS, "hostname set to '%s'", hostname);
- }
-
- // --------------------------------------------------------------------
-
- rrd_default_history_entries = (int) config_get_number("global", "history", RRD_DEFAULT_HISTORY_ENTRIES);
- if(rrd_default_history_entries < 5 || rrd_default_history_entries > RRD_HISTORY_ENTRIES_MAX) {
- info("Invalid save lines %d given. Defaulting to %d.", rrd_default_history_entries, RRD_DEFAULT_HISTORY_ENTRIES);
- rrd_default_history_entries = RRD_DEFAULT_HISTORY_ENTRIES;
- }
- else {
- debug(D_OPTIONS, "save lines set to %d.", rrd_default_history_entries);
- }
-
- // --------------------------------------------------------------------
-
- rrd_update_every = (int) config_get_number("global", "update every", UPDATE_EVERY);
- if(rrd_update_every < 1 || rrd_update_every > 600) {
- info("Invalid update timer %d given. Defaulting to %d.", rrd_update_every, UPDATE_EVERY_MAX);
- rrd_update_every = UPDATE_EVERY;
- }
- else debug(D_OPTIONS, "update timer set to %d.", rrd_update_every);
-
- // let the plugins know the min update_every
- {
- char buf[16];
- snprintfz(buf, 15, "%d", rrd_update_every);
- setenv("NETDATA_UPDATE_EVERY", buf, 1);
- }
-
- // --------------------------------------------------------------------
-
- // block signals while initializing threads.
- // this causes the threads to block signals.
- sigset_t sigset;
- sigfillset(&sigset);
-
- if(pthread_sigmask(SIG_BLOCK, &sigset, NULL) == -1) {
- error("Could not block signals for threads");
- }
-
- // Catch signals which we want to use to quit savely
- struct sigaction sa;
- sigemptyset(&sa.sa_mask);
- sigaddset(&sa.sa_mask, SIGHUP);
- sigaddset(&sa.sa_mask, SIGINT);
- sigaddset(&sa.sa_mask, SIGTERM);
- sa.sa_handler = sig_handler_exit;
- sa.sa_flags = 0;
- if(sigaction(SIGHUP, &sa, NULL) == -1) {
- error("Failed to change signal handler for SIGHUP");
- }
- if(sigaction(SIGINT, &sa, NULL) == -1) {
- error("Failed to change signal handler for SIGINT");
- }
- if(sigaction(SIGTERM, &sa, NULL) == -1) {
- error("Failed to change signal handler for SIGTERM");
- }
-
- // save database on SIGUSR1
- sa.sa_handler = sig_handler_save;
- if(sigaction(SIGUSR1, &sa, NULL) == -1) {
- error("Failed to change signal handler for SIGUSR1");
- }
-
- // Ignore SIGPIPE completely.
- // INFO: If we add signals here we have to unblock them
- // at popen.c when running a external plugin.
- sa.sa_handler = SIG_IGN;
- if(sigaction(SIGPIPE, &sa, NULL) == -1) {
- error("Failed to change signal handler for SIGPIPE");
- }
-
- // --------------------------------------------------------------------
-
- i = pthread_attr_init(&attr);
- if(i != 0)
- fatal("pthread_attr_init() failed with code %d.", i);
-
- i = pthread_attr_getstacksize(&attr, &stacksize);
- if(i != 0)
- fatal("pthread_attr_getstacksize() failed with code %d.", i);
- else
- debug(D_OPTIONS, "initial pthread stack size is %zu bytes", stacksize);
-
- wanted_stacksize = config_get_number("global", "pthread stack size", stacksize);
-
- // --------------------------------------------------------------------
-
- 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()
- user = config_get("global", "run as user" , (getuid() == 0)?NETDATA_USER:"");
-
- // IMPORTANT: these have to run once, while single threaded
- web_files_uid(); // IMPORTANT: web_files_uid() before web_files_gid()
- web_files_gid();
-
- // --------------------------------------------------------------------
-
- create_listen_sockets();
- }
-
- if(become_daemon(dont_fork, 0, user, input_log_file, output_log_file, error_log_file, access_log_file, &access_fd, &stdaccess) == -1)
- fatal("Cannot demonize myself.");
+ // --------------------------------------------------------------------
+
+ global_host_prefix = config_get("global", "host access prefix", "");
+ setenv("NETDATA_HOST_PREFIX", global_host_prefix, 1);
+
+ get_system_HZ();
+ get_system_cpus();
+ get_system_pid_max();
+
+ // --------------------------------------------------------------------
+
+ stdout_filename = config_get("global", "debug log", LOG_DIR "/debug.log");
+ stderr_filename = config_get("global", "error log", LOG_DIR "/error.log");
+ stdaccess_filename = config_get("global", "access log", LOG_DIR "/access.log");
+
+ error_log_throttle_period_backup =
+ error_log_throttle_period = config_get_number("global", "errors flood protection period", error_log_throttle_period);
+ setenv("NETDATA_ERRORS_THROTTLE_PERIOD", config_get("global", "errors flood protection period" , ""), 1);
+
+ error_log_errors_per_period = (unsigned long)config_get_number("global", "errors to trigger flood protection", error_log_errors_per_period);
+ setenv("NETDATA_ERRORS_PER_PERIOD" , config_get("global", "errors to trigger flood protection", ""), 1);
+
+ if(check_config) {
+ stdout_filename = stderr_filename = stdaccess_filename = "system";
+ error_log_throttle_period = 0;
+ error_log_errors_per_period = 0;
+ }
+ error_log_limit_unlimited();
+
+ // --------------------------------------------------------------------
+
+ rrd_memory_mode = rrd_memory_mode_id(config_get("global", "memory mode", rrd_memory_mode_name(rrd_memory_mode)));
+
+ // --------------------------------------------------------------------
+
+ {
+ char hostnamebuf[HOSTNAME_MAX + 1];
+ if(gethostname(hostnamebuf, HOSTNAME_MAX) == -1)
+ error("WARNING: Cannot get machine hostname.");
+ hostname = config_get("global", "hostname", hostnamebuf);
+ debug(D_OPTIONS, "hostname set to '%s'", hostname);
+ setenv("NETDATA_HOSTNAME", hostname, 1);
+ }
+
+ // --------------------------------------------------------------------
+
+ rrd_default_history_entries = (int) config_get_number("global", "history", RRD_DEFAULT_HISTORY_ENTRIES);
+ if(rrd_default_history_entries < 5 || rrd_default_history_entries > RRD_HISTORY_ENTRIES_MAX) {
+ error("Invalid history entries %d given. Defaulting to %d.", rrd_default_history_entries, RRD_DEFAULT_HISTORY_ENTRIES);
+ rrd_default_history_entries = RRD_DEFAULT_HISTORY_ENTRIES;
+ }
+ else {
+ debug(D_OPTIONS, "save lines set to %d.", rrd_default_history_entries);
+ }
+
+ // --------------------------------------------------------------------
+
+ rrd_update_every = (int) config_get_number("global", "update every", UPDATE_EVERY);
+ if(rrd_update_every < 1 || rrd_update_every > 600) {
+ error("Invalid data collection frequency (update every) %d given. Defaulting to %d.", rrd_update_every, UPDATE_EVERY_MAX);
+ rrd_update_every = UPDATE_EVERY;
+ }
+ else debug(D_OPTIONS, "update timer set to %d.", rrd_update_every);
+
+ // let the plugins know the min update_every
+ {
+ char buf[16];
+ snprintfz(buf, 15, "%d", rrd_update_every);
+ setenv("NETDATA_UPDATE_EVERY", buf, 1);
+ }
+
+ // --------------------------------------------------------------------
+
+ // block signals while initializing threads.
+ // this causes the threads to block signals.
+ sigset_t sigset;
+ sigfillset(&sigset);
+ if(pthread_sigmask(SIG_BLOCK, &sigset, NULL) == -1)
+ error("Could not block signals for threads");
+
+ // Catch signals which we want to use
+ struct sigaction sa;
+ sa.sa_flags = 0;
+
+ // ingore all signals while we run in a signal handler
+ sigfillset(&sa.sa_mask);
+
+ // INFO: If we add signals here we have to unblock them
+ // at popen.c when running a external plugin.
+
+ // Ignore SIGPIPE completely.
+ sa.sa_handler = SIG_IGN;
+ if(sigaction(SIGPIPE, &sa, NULL) == -1)
+ error("Failed to change signal handler for SIGPIPE");
+
+ sa.sa_handler = sig_handler_exit;
+ if(sigaction(SIGINT, &sa, NULL) == -1)
+ error("Failed to change signal handler for SIGINT");
+
+ sa.sa_handler = sig_handler_exit;
+ if(sigaction(SIGTERM, &sa, NULL) == -1)
+ error("Failed to change signal handler for SIGTERM");
+
+ sa.sa_handler = sig_handler_logrotate;
+ if(sigaction(SIGHUP, &sa, NULL) == -1)
+ error("Failed to change signal handler for SIGHUP");
+
+ // save database on SIGUSR1
+ sa.sa_handler = sig_handler_save;
+ if(sigaction(SIGUSR1, &sa, NULL) == -1)
+ error("Failed to change signal handler for SIGUSR1");
+
+ // reload health configuration on SIGUSR2
+ sa.sa_handler = sig_handler_reload_health;
+ if(sigaction(SIGUSR2, &sa, NULL) == -1)
+ error("Failed to change signal handler for SIGUSR2");
+
+ // --------------------------------------------------------------------
+
+ i = pthread_attr_init(&attr);
+ if(i != 0)
+ fatal("pthread_attr_init() failed with code %d.", i);
+
+ i = pthread_attr_getstacksize(&attr, &stacksize);
+ if(i != 0)
+ fatal("pthread_attr_getstacksize() failed with code %d.", i);
+ else
+ debug(D_OPTIONS, "initial pthread stack size is %zu bytes", stacksize);
+
+ wanted_stacksize = (size_t)config_get_number("global", "pthread stack size", (long)stacksize);
+
+ // --------------------------------------------------------------------
+
+ 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()
+ user = config_get("global", "run as user" , (getuid() == 0)?NETDATA_USER:"");
+
+ // IMPORTANT: these have to run once, while single threaded
+ web_files_uid(); // IMPORTANT: web_files_uid() before web_files_gid()
+ web_files_gid();
+
+ // --------------------------------------------------------------------
+
+ if(!check_config)
+ create_listen_sockets();
+ }
+
+ // 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)
- info("Cannot request unlimited core dumps for debugging... Proceeding anyway...");
- prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
- }
+ 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...");
+#if !(defined(__FreeBSD__) || defined(__APPLE__))
+ prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
+#endif /* __FreeBSD__ || __APPLE__*/
+ }
#endif /* NETDATA_INTERNAL_CHECKS */
- if(output_log_syslog || error_log_syslog || access_log_syslog)
- openlog("netdata", LOG_PID, LOG_DAEMON);
+ // 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());
+
+ // ------------------------------------------------------------------------
+ // get default pthread stack size
+
+ if(stacksize < wanted_stacksize) {
+ i = pthread_attr_setstacksize(&attr, wanted_stacksize);
+ if(i != 0)
+ fatal("pthread_attr_setstacksize() to %zu bytes, failed with code %d.", wanted_stacksize, i);
+ else
+ debug(D_SYSTEM, "Successfully set pthread stacksize to %zu bytes", wanted_stacksize);
+ }
+
+ // ------------------------------------------------------------------------
+ // initialize rrd host
+
+ rrdhost_init(hostname);
+
+ // ------------------------------------------------------------------------
+ // initialize the registry
+
+ registry_init();
- info("NetData started on pid %d", getpid());
+ // ------------------------------------------------------------------------
+ // initialize health monitoring
+ health_init();
- // ------------------------------------------------------------------------
- // get default pthread stack size
+ if(check_config)
+ exit(1);
- if(stacksize < wanted_stacksize) {
- i = pthread_attr_setstacksize(&attr, wanted_stacksize);
- if(i != 0)
- fatal("pthread_attr_setstacksize() to %zu bytes, failed with code %d.", wanted_stacksize, i);
- else
- info("Successfully set pthread stacksize to %zu bytes", wanted_stacksize);
- }
+ // ------------------------------------------------------------------------
+ // enable log flood protection
- // --------------------------------------------------------------------
- // initialize the registry
+ error_log_limit_reset();
- registry_init();
+ // ------------------------------------------------------------------------
+ // spawn the threads
- // ------------------------------------------------------------------------
- // spawn the threads
+ web_server_threading_selection();
- web_server_threading_selection();
+ for (i = 0; static_threads[i].name != NULL ; i++) {
+ struct netdata_static_thread *st = &static_threads[i];
- for (i = 0; static_threads[i].name != NULL ; i++) {
- struct netdata_static_thread *st = &static_threads[i];
+ if(st->enabled) {
+ st->thread = mallocz(sizeof(pthread_t));
- if(st->enabled) {
- st->thread = mallocz(sizeof(pthread_t));
+ debug(D_SYSTEM, "Starting thread %s.", st->name);
- info("Starting thread %s.", st->name);
+ if(pthread_create(st->thread, &attr, st->start_routine, st))
+ error("failed to create new thread for %s.", st->name);
- if(pthread_create(st->thread, &attr, st->start_routine, NULL))
- error("failed to create new thread for %s.", st->name);
+ else if(pthread_detach(*st->thread))
+ error("Cannot request detach of newly created %s thread.", st->name);
+ }
+ else debug(D_SYSTEM, "Not starting thread %s.", st->name);
+ }
- else if(pthread_detach(*st->thread))
- error("Cannot request detach of newly created %s thread.", st->name);
- }
- else info("Not starting thread %s.", st->name);
- }
+ info("netdata initialization completed. Enjoy real-time performance monitoring!");
- // ------------------------------------------------------------------------
- // block signals while initializing threads.
- sigset_t sigset;
- sigfillset(&sigset);
+ // ------------------------------------------------------------------------
+ // block signals while initializing threads.
+ sigset_t sigset;
+ sigfillset(&sigset);
- if(pthread_sigmask(SIG_UNBLOCK, &sigset, NULL) == -1) {
- error("Could not unblock signals for threads");
- }
+ if(pthread_sigmask(SIG_UNBLOCK, &sigset, NULL) == -1) {
+ error("Could not unblock signals for threads");
+ }
- // Handle flags set in the signal handler.
- while(1) {
- pause();
- if(netdata_exit) {
- info("Exit main loop of netdata.");
- netdata_cleanup_and_exit(0);
- exit(0);
- }
- }
+ // Handle flags set in the signal handler.
+ while(1) {
+ pause();
+ if(netdata_exit) {
+ debug(D_EXIT, "Exit main loop of netdata.");
+ netdata_cleanup_and_exit(0);
+ exit(0);
+ }
+ }
}
projects / netdata.git / blobdiff