15 #include "web_server.h"
18 #include "web_client.h"
22 #include "unit_test.h"
24 #include "plugins_d.h"
25 #include "plugin_idlejitter.h"
26 #include "plugin_tc.h"
27 #include "plugin_checks.h"
28 #include "plugin_proc.h"
29 #include "plugin_nfacct.h"
33 struct netdata_static_thread {
43 void (*init_routine) (void);
44 void *(*start_routine) (void *);
47 struct netdata_static_thread static_threads[] = {
48 {"tc", "plugins", "tc", 1, NULL, NULL, tc_main},
49 {"idlejitter", "plugins", "idlejitter", 1, NULL, NULL, cpuidlejitter_main},
50 {"proc", "plugins", "proc", 1, NULL, NULL, proc_main},
52 #ifdef INTERNAL_PLUGIN_NFACCT
53 // nfacct requires root access
54 // so, we build it as an external plugin with setuid to root
55 {"nfacct", "plugins", "nfacct", 1, NULL, NULL, nfacct_main},
58 {"plugins.d", NULL, NULL, 1, NULL, NULL, pluginsd_main},
59 {"check", "plugins", "checks", 0, NULL, NULL, checks_main},
60 {"web", NULL, NULL, 1, NULL, NULL, socket_listen_main},
61 {NULL, NULL, NULL, 0, NULL, NULL, NULL}
64 int killpid(pid_t pid, int sig)
67 debug(D_EXIT, "Request to kill pid %d", pid);
70 if(kill(pid, 0) == -1) {
73 error("Request to kill pid %d, but it is not running.", pid);
77 error("Request to kill pid %d, but I do not have enough permissions.", pid);
81 error("Request to kill pid %d, but I received an error.", pid);
89 old = signal(sig, SIG_IGN);
91 error("Cannot overwrite signal handler for signal %d", sig);
97 if(signal(sig, old) == SIG_ERR)
98 error("Cannot restore signal handler for signal %d", sig);
103 error("Cannot kill pid %d, but it is not running.", pid);
107 error("Cannot kill pid %d, but I do not have enough permissions.", pid);
111 error("Cannot kill pid %d, but I received an error.", pid);
124 struct web_client *w;
125 for(w = web_clients; w ; w = w->next) {
126 debug(D_EXIT, "Stopping web client %s", w->client_ip);
127 pthread_cancel(w->thread);
128 pthread_join(w->thread, NULL);
132 for (i = 0; static_threads[i].name != NULL ; i++) {
133 if(static_threads[i].thread) {
134 debug(D_EXIT, "Stopping %s thread", static_threads[i].name);
135 pthread_cancel(*static_threads[i].thread);
136 pthread_join(*static_threads[i].thread, NULL);
137 static_threads[i].thread = NULL;
142 info("Killing tc-qos-helper procees");
143 if(killpid(tc_child_pid, SIGTERM) != -1)
144 waitid(tc_child_pid, 0, &info, WEXITED);
149 for(cd = pluginsd_root ; cd ; cd = cd->next) {
150 debug(D_EXIT, "Stopping %s plugin thread", cd->id);
151 pthread_cancel(cd->thread);
152 pthread_join(cd->thread, NULL);
154 if(cd->pid && !cd->obsolete) {
155 debug(D_EXIT, "killing %s plugin process", cd->id);
156 if(killpid(cd->pid, SIGTERM) != -1)
157 waitid(cd->pid, 0, &info, WEXITED);
161 debug(D_EXIT, "All threads/childs stopped.");
165 int main(int argc, char **argv)
168 int config_loaded = 0;
171 // set the name for logging
172 program_name = "netdata";
174 // parse the arguments
175 for(i = 1; i < argc ; i++) {
176 if(strcmp(argv[i], "-c") == 0 && (i+1) < argc) {
177 if(load_config(argv[i+1], 1) != 1) {
178 fprintf(stderr, "Cannot load configuration file %s. Reason: %s\n", argv[i+1], strerror(errno));
182 debug(D_OPTIONS, "Configuration loaded from %s.", argv[i+1]);
187 else if(strcmp(argv[i], "-df") == 0 && (i+1) < argc) { config_set("global", "debug flags", argv[i+1]); i++; }
188 else if(strcmp(argv[i], "-p") == 0 && (i+1) < argc) { config_set("global", "port", argv[i+1]); i++; }
189 else if(strcmp(argv[i], "-u") == 0 && (i+1) < argc) { config_set("global", "run as user", argv[i+1]); i++; }
190 else if(strcmp(argv[i], "-l") == 0 && (i+1) < argc) { config_set("global", "history", argv[i+1]); i++; }
191 else if(strcmp(argv[i], "-t") == 0 && (i+1) < argc) { config_set("global", "update every", argv[i+1]); i++; }
192 else if(strcmp(argv[i], "-ch") == 0 && (i+1) < argc) { config_set("global", "host access prefix", argv[i+1]); i++; }
193 else if(strcmp(argv[i], "-nodeamon") == 0 || strcmp(argv[i], "-nd") == 0) dont_fork = 1;
194 else if(strcmp(argv[i], "--unittest") == 0) {
195 if(unit_test_storage()) exit(1);
197 rrd_update_every = 1;
198 if(unit_test(1000000, 0)) exit(1);
199 if(unit_test(1000000, 500000)) exit(1);
200 if(unit_test(1000000, 100000)) exit(1);
201 if(unit_test(1000000, 900000)) exit(1);
202 if(unit_test(2000000, 0)) exit(1);
203 if(unit_test(2000000, 500000)) exit(1);
204 if(unit_test(2000000, 100000)) exit(1);
205 if(unit_test(2000000, 900000)) exit(1);
206 if(unit_test(500000, 500000)) exit(1);
207 //if(unit_test(500000, 100000)) exit(1); // FIXME: the expected numbers are wrong
208 //if(unit_test(500000, 900000)) exit(1); // FIXME: the expected numbers are wrong
209 if(unit_test(500000, 0)) exit(1);
210 fprintf(stderr, "\n\nALL TESTS PASSED\n\n");
214 fprintf(stderr, "Cannot understand option '%s'.\n", argv[i]);
215 fprintf(stderr, "\nUSAGE: %s [-d] [-l LINES_TO_SAVE] [-u UPDATE_TIMER] [-p LISTEN_PORT] [-dl debug log file] [-df debug flags].\n\n", argv[0]);
216 fprintf(stderr, " -c CONFIG FILE the configuration file to load. Default: %s.\n", CONFIG_DIR "/" CONFIG_FILENAME);
217 fprintf(stderr, " -l LINES_TO_SAVE can be from 5 to %d lines in JSON data. Default: %d.\n", RRD_HISTORY_ENTRIES_MAX, RRD_DEFAULT_HISTORY_ENTRIES);
218 fprintf(stderr, " -t UPDATE_TIMER can be from 1 to %d seconds. Default: %d.\n", UPDATE_EVERY_MAX, UPDATE_EVERY);
219 fprintf(stderr, " -p LISTEN_PORT can be from 1 to %d. Default: %d.\n", 65535, LISTEN_PORT);
220 fprintf(stderr, " -u USERNAME can be any system username to run as. Default: none.\n");
221 fprintf(stderr, " -ch path to access host /proc and /sys when running in a container. Default: empty.\n");
222 fprintf(stderr, " -nd or -nodeamon to disable forking in the background. Default: unset.\n");
223 fprintf(stderr, " -df FLAGS debug options. Default: 0x%8llx.\n", debug_flags);
228 if(!config_loaded) load_config(NULL, 0);
230 char *input_log_file = NULL;
231 char *output_log_file = NULL;
232 char *error_log_file = NULL;
233 char *access_log_file = NULL;
237 // --------------------------------------------------------------------
239 sprintf(buffer, "0x%08llx", 0ULL);
240 char *flags = config_get("global", "debug flags", buffer);
241 debug_flags = strtoull(flags, NULL, 0);
242 debug(D_OPTIONS, "Debug flags set to '0x%8llx'.", debug_flags);
244 // --------------------------------------------------------------------
246 global_host_prefix = config_get("global", "host access prefix", "");
248 // --------------------------------------------------------------------
250 output_log_file = config_get("global", "debug log", LOG_DIR "/debug.log");
251 if(strcmp(output_log_file, "syslog") == 0) {
252 output_log_syslog = 1;
253 output_log_file = NULL;
255 else if(strcmp(output_log_file, "none") == 0) {
256 output_log_syslog = 0;
257 output_log_file = NULL;
259 else output_log_syslog = 0;
261 // --------------------------------------------------------------------
264 error_log_file = config_get("global", "error log", LOG_DIR "/error.log");
265 if(strcmp(error_log_file, "syslog") == 0) {
266 error_log_syslog = 1;
267 error_log_file = NULL;
269 else if(strcmp(error_log_file, "none") == 0) {
270 error_log_syslog = 0;
271 error_log_file = NULL;
272 silent = 1; // optimization - do not even generate debug log entries
274 else error_log_syslog = 0;
276 // --------------------------------------------------------------------
278 access_log_file = config_get("global", "access log", LOG_DIR "/access.log");
279 if(strcmp(access_log_file, "syslog") == 0) {
280 access_log_syslog = 1;
281 access_log_file = NULL;
283 else if(strcmp(access_log_file, "none") == 0) {
284 access_log_syslog = 0;
285 access_log_file = NULL;
287 else access_log_syslog = 0;
289 // --------------------------------------------------------------------
291 rrd_memory_mode = rrd_memory_mode_id(config_get("global", "memory mode", rrd_memory_mode_name(rrd_memory_mode)));
293 // --------------------------------------------------------------------
295 if(gethostname(buffer, HOSTNAME_MAX) == -1)
296 error("WARNING: Cannot get machine hostname.");
297 hostname = config_get("global", "hostname", buffer);
298 debug(D_OPTIONS, "hostname set to '%s'", hostname);
300 // --------------------------------------------------------------------
302 rrd_default_history_entries = config_get_number("global", "history", RRD_DEFAULT_HISTORY_ENTRIES);
303 if(rrd_default_history_entries < 5 || rrd_default_history_entries > RRD_HISTORY_ENTRIES_MAX) {
304 fprintf(stderr, "Invalid save lines %d given. Defaulting to %d.\n", rrd_default_history_entries, RRD_DEFAULT_HISTORY_ENTRIES);
305 rrd_default_history_entries = RRD_DEFAULT_HISTORY_ENTRIES;
308 debug(D_OPTIONS, "save lines set to %d.", rrd_default_history_entries);
311 // --------------------------------------------------------------------
313 rrd_update_every = config_get_number("global", "update every", UPDATE_EVERY);
314 if(rrd_update_every < 1 || rrd_update_every > 600) {
315 fprintf(stderr, "Invalid update timer %d given. Defaulting to %d.\n", rrd_update_every, UPDATE_EVERY_MAX);
316 rrd_update_every = UPDATE_EVERY;
318 else debug(D_OPTIONS, "update timer set to %d.", rrd_update_every);
320 // --------------------------------------------------------------------
322 for (i = 0; static_threads[i].name != NULL ; i++) {
323 struct netdata_static_thread *st = &static_threads[i];
325 if(st->config_name) st->enabled = config_get_boolean(st->config_section, st->config_name, st->enabled);
326 if(st->enabled && st->init_routine) st->init_routine();
329 // --------------------------------------------------------------------
332 char *user = config_get("global", "run as user", (getuid() == 0)?"nobody":"");
334 if(become_user(user) != 0) {
335 fprintf(stderr, "Cannot become user %s.\n", user);
338 else debug(D_OPTIONS, "Successfully became user %s.", user);
341 // --------------------------------------------------------------------
343 listen_backlog = config_get_number("global", "http port listen backlog", LISTEN_BACKLOG);
345 listen_port = config_get_number("global", "port", LISTEN_PORT);
346 if(listen_port < 1 || listen_port > 65535) {
347 fprintf(stderr, "Invalid listen port %d given. Defaulting to %d.\n", listen_port, LISTEN_PORT);
348 listen_port = LISTEN_PORT;
350 else debug(D_OPTIONS, "Listen port set to %d.", listen_port);
353 char *ipv = config_get("global", "ip version", "any");
354 if(!strcmp(ipv, "any") || !strcmp(ipv, "both") || !strcmp(ipv, "all")) ip = 0;
355 else if(!strcmp(ipv, "ipv4") || !strcmp(ipv, "IPV4") || !strcmp(ipv, "IPv4") || !strcmp(ipv, "4")) ip = 4;
356 else if(!strcmp(ipv, "ipv6") || !strcmp(ipv, "IPV6") || !strcmp(ipv, "IPv6") || !strcmp(ipv, "6")) ip = 6;
357 else fprintf(stderr, "Cannot understand ip version '%s'. Assumming 'any'.", ipv);
359 if(ip == 0 || ip == 6) listen_fd = create_listen_socket6(listen_port, listen_backlog);
361 listen_fd = create_listen_socket4(listen_port, listen_backlog);
362 if(listen_fd >= 0 && ip != 4) fprintf(stderr, "Managed to open an IPv4 socket on port %d.", listen_port);
365 if(listen_fd < 0) fatal("Cannot listen socket.");
368 // never become a problem
369 if(nice(20) == -1) fprintf(stderr, "Cannot lower my CPU priority. Error: %s.\n", strerror(errno));
371 #ifndef NETDATA_NO_DAEMON
372 if(become_daemon(dont_fork, 0, input_log_file, output_log_file, error_log_file, access_log_file, &access_fd, &stdaccess) == -1) {
373 fprintf(stderr, "Cannot demonize myself (%s).", strerror(errno));
378 if(output_log_syslog || error_log_syslog || access_log_syslog)
379 openlog("netdata", LOG_PID, LOG_DAEMON);
381 info("NetData started on pid %d", getpid());
385 for (i = 1 ; i < 65 ;i++) {
394 signal(i, sig_handler);
399 for (i = 0; static_threads[i].name != NULL ; i++) {
400 struct netdata_static_thread *st = &static_threads[i];
403 st->thread = malloc(sizeof(pthread_t));
405 info("Starting thread %s.", st->name);
407 if(pthread_create(st->thread, NULL, st->start_routine, NULL))
408 error("failed to create new thread for %s.", st->name);
410 else if(pthread_detach(*st->thread))
411 error("Cannot request detach of newly created %s thread.", st->name);
413 else info("Not starting thread %s.", st->name);
416 // for future use - the main thread