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-rw-r--r--[-rwxr-xr-x]src/main.c103
1 files changed, 90 insertions, 13 deletions
diff --git a/src/main.c b/src/main.c
index a29757358..ad24debfa 100755..100644
--- a/src/main.c
+++ b/src/main.c
@@ -14,6 +14,7 @@
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/mman.h>
+#include <sys/prctl.h>
#include "common.h"
#include "log.h"
@@ -35,6 +36,7 @@
#include "plugin_nfacct.h"
#include "main.h"
+#include "../config.h"
int netdata_exit = 0;
@@ -43,7 +45,23 @@ void netdata_cleanup_and_exit(int ret)
netdata_exit = 1;
rrdset_save_all();
// kill_childs();
- unlink("/var/run/netdata.pid");
+
+ // let it log a few more error messages
+ error_log_limit_reset();
+
+ if(pidfd != -1) {
+ if(ftruncate(pidfd, 0) != 0)
+ error("Cannot truncate pidfile '%s'.", pidfile);
+
+ close(pidfd);
+ pidfd = -1;
+ }
+
+ if(pidfile[0]) {
+ if(unlink(pidfile) != 0)
+ error("Cannot unlink pidfile '%s'.", pidfile);
+ }
+
info("NetData exiting. Bye bye...");
exit(ret);
}
@@ -189,6 +207,8 @@ 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();
@@ -215,7 +235,13 @@ int main(int argc, char **argv)
else if(strcmp(argv[i], "-l") == 0 && (i+1) < argc) { config_set("global", "history", argv[i+1]); i++; }
else if(strcmp(argv[i], "-t") == 0 && (i+1) < argc) { config_set("global", "update every", argv[i+1]); i++; }
else if(strcmp(argv[i], "-ch") == 0 && (i+1) < argc) { config_set("global", "host access prefix", argv[i+1]); i++; }
- else if(strcmp(argv[i], "-nodeamon") == 0 || strcmp(argv[i], "-nd") == 0) dont_fork = 1;
+ else if(strcmp(argv[i], "-stacksize") == 0 && (i+1) < argc) { config_set("global", "pthread stack size", argv[i+1]); i++; }
+ else if(strcmp(argv[i], "-nodaemon") == 0 || strcmp(argv[i], "-nd") == 0) dont_fork = 1;
+ else if(strcmp(argv[i], "-pidfile") == 0 && (i+1) < argc) {
+ i++;
+ strncpy(pidfile, argv[i], FILENAME_MAX);
+ pidfile[FILENAME_MAX] = '\0';
+ }
else if(strcmp(argv[i], "--unittest") == 0) {
rrd_update_every = 1;
if(run_all_mockup_tests()) exit(1);
@@ -225,7 +251,7 @@ int main(int argc, char **argv)
}
else {
fprintf(stderr, "Cannot understand option '%s'.\n", argv[i]);
- 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]);
+ fprintf(stderr, "\nUSAGE: %s [-d] [-l LINES_TO_SAVE] [-u UPDATE_TIMER] [-p LISTEN_PORT] [-df debug flags].\n\n", argv[0]);
fprintf(stderr, " -c CONFIG FILE the configuration file to load. Default: %s.\n", CONFIG_DIR "/" CONFIG_FILENAME);
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);
fprintf(stderr, " -t UPDATE_TIMER can be from 1 to %d seconds. Default: %d.\n", UPDATE_EVERY_MAX, UPDATE_EVERY);
@@ -234,6 +260,8 @@ int main(int argc, char **argv)
fprintf(stderr, " -ch path to access host /proc and /sys when running in a container. Default: empty.\n");
fprintf(stderr, " -nd or -nodeamon to disable forking in the background. Default: unset.\n");
fprintf(stderr, " -df FLAGS debug options. Default: 0x%08llx.\n", debug_flags);
+ fprintf(stderr, " -stacksize BYTES to overwrite the pthread stack size.\n");
+ fprintf(stderr, " -pidfile FILENAME to save a pid while running.\n");
exit(1);
}
}
@@ -276,6 +304,7 @@ int main(int argc, char **argv)
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);
}
// --------------------------------------------------------------------
@@ -319,6 +348,12 @@ int main(int argc, char **argv)
}
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 = 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");
@@ -347,7 +382,7 @@ 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) {
- fprintf(stderr, "Invalid save lines %d given. Defaulting to %d.\n", rrd_default_history_entries, RRD_DEFAULT_HISTORY_ENTRIES);
+ 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 {
@@ -358,7 +393,7 @@ 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) {
- fprintf(stderr, "Invalid update timer %d given. Defaulting to %d.\n", rrd_update_every, UPDATE_EVERY_MAX);
+ 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);
@@ -372,6 +407,20 @@ int main(int argc, char **argv)
// --------------------------------------------------------------------
+ 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];
@@ -381,9 +430,13 @@ int main(int argc, char **argv)
// --------------------------------------------------------------------
- prepare_rundir();
+ // 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:"");
- web_files_uid();
+
+ // IMPORTANT: these have to run once, while single threaded
+ web_files_uid(); // IMPORTANT: web_files_uid() before web_files_gid()
+ web_files_gid();
// --------------------------------------------------------------------
@@ -391,7 +444,7 @@ int main(int argc, char **argv)
listen_port = (int) config_get_number("global", "port", LISTEN_PORT);
if(listen_port < 1 || listen_port > 65535) {
- fprintf(stderr, "Invalid listen port %d given. Defaulting to %d.\n", listen_port, LISTEN_PORT);
+ info("Invalid listen port %d given. Defaulting to %d.", listen_port, LISTEN_PORT);
listen_port = LISTEN_PORT;
}
else debug(D_OPTIONS, "Listen port set to %d.", listen_port);
@@ -401,12 +454,12 @@ int main(int argc, char **argv)
if(!strcmp(ipv, "any") || !strcmp(ipv, "both") || !strcmp(ipv, "all")) ip = 0;
else if(!strcmp(ipv, "ipv4") || !strcmp(ipv, "IPV4") || !strcmp(ipv, "IPv4") || !strcmp(ipv, "4")) ip = 4;
else if(!strcmp(ipv, "ipv6") || !strcmp(ipv, "IPV6") || !strcmp(ipv, "IPv6") || !strcmp(ipv, "6")) ip = 6;
- else fprintf(stderr, "Cannot understand ip version '%s'. Assumming 'any'.", ipv);
+ else info("Cannot understand ip version '%s'. Assuming 'any'.", ipv);
- if(ip == 0 || ip == 6) listen_fd = create_listen_socket6(listen_port, listen_backlog);
+ if(ip == 0 || ip == 6) listen_fd = create_listen_socket6(config_get("global", "bind socket to IP", "*"), listen_port, listen_backlog);
if(listen_fd < 0) {
- listen_fd = create_listen_socket4(listen_port, listen_backlog);
- if(listen_fd >= 0 && ip != 4) fprintf(stderr, "Managed to open an IPv4 socket on port %d.", listen_port);
+ listen_fd = create_listen_socket4(config_get("global", "bind socket to IP", "*"), listen_port, listen_backlog);
+ if(listen_fd >= 0 && ip != 4) info("Managed to open an IPv4 socket on port %d.", listen_port);
}
if(listen_fd < 0) fatal("Cannot listen socket.");
@@ -420,6 +473,14 @@ int main(int argc, char **argv)
exit(1);
}
+ 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(output_log_syslog || error_log_syslog || access_log_syslog)
openlog("netdata", LOG_PID, LOG_DAEMON);
@@ -445,15 +506,31 @@ int main(int argc, char **argv)
}
}
+ // ------------------------------------------------------------------------
+ // 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
+ info("Successfully set pthread stacksize to %zu bytes", wanted_stacksize);
+ }
+
+ // ------------------------------------------------------------------------
+ // spawn the threads
+
for (i = 0; static_threads[i].name != NULL ; i++) {
struct netdata_static_thread *st = &static_threads[i];
if(st->enabled) {
st->thread = malloc(sizeof(pthread_t));
+ if(!st->thread)
+ fatal("Cannot allocate pthread_t memory");
info("Starting thread %s.", st->name);
- if(pthread_create(st->thread, NULL, st->start_routine, NULL))
+ 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))
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 19:44:47 +0000