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-rw-r--r--src/main.c247
1 files changed, 179 insertions, 68 deletions
diff --git a/src/main.c b/src/main.c
index 3e6aa5046..ca134fcb0 100644
--- a/src/main.c
+++ b/src/main.c
@@ -7,36 +7,30 @@ void netdata_cleanup_and_exit(int ret) {
error_log_limit_unlimited();
- info("Called: netdata_cleanup_and_exit()");
-#ifdef NETDATA_INTERNAL_CHECKS
- rrdset_free_all();
-#else
+ debug(D_EXIT, "Called: netdata_cleanup_and_exit()");
+
+ // save the database
rrdset_save_all();
-#endif
- // kill_childs();
+ // unlink the pid
if(pidfile[0]) {
if(unlink(pidfile) != 0)
error("Cannot unlink pidfile '%s'.", pidfile);
}
- info("NetData exiting. Bye bye...");
- exit(ret);
-}
-
-struct netdata_static_thread {
- char *name;
-
- 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
@@ -45,9 +39,17 @@ struct netdata_static_thread {
{"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},
+#endif /* __FreeBSD__, __APPLE__*/
{"cgroups", "plugins", "cgroups", 1, NULL, NULL, cgroups_main},
{"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},
@@ -149,67 +151,80 @@ int killpid(pid_t pid, int sig)
void kill_childs()
{
+ error_log_limit_unlimited();
+
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);
+ info("Stopping web client %s", w->client_ip);
pthread_cancel(w->thread);
- pthread_join(w->thread, NULL);
+ // 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].thread) {
- debug(D_EXIT, "Stopping %s thread", static_threads[i].name);
+ if(static_threads[i].enabled) {
+ info("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;
+ // it is detached
+ // pthread_join(*static_threads[i].thread, NULL);
+
+ static_threads[i].enabled = 0;
}
}
if(tc_child_pid) {
- info("Killing tc-qos-helper procees");
+ 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;
}
- 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(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);
- debug(D_EXIT, "All threads/childs stopped.");
+ 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"},
- {'k', "Check daemon configuration.", NULL, NULL},
- {'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=N|unittest|debug_flags=N", 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) {
@@ -231,20 +246,63 @@ void help(int exitcode) {
}
}
- fprintf(stream, "SYNOPSIS: netdata [options]\n");
+ 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");
+ 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, " Default: %s\n", 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);
}
@@ -329,6 +387,9 @@ int main(int argc, char **argv)
string_i++;
}
}
+ // terminate optstring
+ optstring[string_i] ='\0';
+ optstring[(num_opts *2)] ='\0';
int opt;
while( (opt = getopt(argc, argv, optstring)) != -1 ) {
@@ -386,10 +447,54 @@ int main(int argc, char **argv)
if(unit_test_storage()) exit(1);
fprintf(stderr, "\n\nALL TESTS PASSED\n\n");
exit(0);
- } else if(strncmp(optarg, stacksize_string, strlen(stacksize_string)) == 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) {
+ }
+ 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);
@@ -460,8 +565,11 @@ int main(int argc, char **argv)
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...");
+ 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__*/
}
// --------------------------------------------------------------------
@@ -520,7 +628,7 @@ int main(int argc, char **argv)
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);
+ 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 {
@@ -531,7 +639,7 @@ int main(int argc, char **argv)
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);
+ 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);
@@ -635,17 +743,18 @@ int main(int argc, char **argv)
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...");
+ 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 */
// fork, switch user, create pid file, set process priority
if(become_daemon(dont_fork, user) == -1)
- fatal("Cannot demonize myself.");
-
- info("NetData started on pid %d", getpid());
+ fatal("Cannot daemonize myself.");
+ info("netdata started on pid %d.", getpid());
// ------------------------------------------------------------------------
// get default pthread stack size
@@ -655,7 +764,7 @@ int main(int argc, char **argv)
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);
+ debug(D_SYSTEM, "Successfully set pthread stacksize to %zu bytes", wanted_stacksize);
}
// ------------------------------------------------------------------------
@@ -692,17 +801,19 @@ int main(int argc, char **argv)
if(st->enabled) {
st->thread = mallocz(sizeof(pthread_t));
- info("Starting thread %s.", st->name);
+ debug(D_SYSTEM, "Starting thread %s.", st->name);
- if(pthread_create(st->thread, &attr, st->start_routine, NULL))
+ if(pthread_create(st->thread, &attr, st->start_routine, st))
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 info("Not starting thread %s.", st->name);
+ else debug(D_SYSTEM, "Not starting thread %s.", st->name);
}
+ info("netdata initialization completed. Enjoy real-time performance monitoring!");
+
// ------------------------------------------------------------------------
// block signals while initializing threads.
sigset_t sigset;
@@ -716,7 +827,7 @@ int main(int argc, char **argv)
while(1) {
pause();
if(netdata_exit) {
- info("Exit main loop of netdata.");
+ debug(D_EXIT, "Exit main loop of netdata.");
netdata_cleanup_and_exit(0);
exit(0);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-24 19:55:09 +0000