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netdata_netdata/daemon/main.c
Costa Tsaousis cb7af25c09
RRD structures managed by dictionaries () 
* rrdset - in progress

* rrdset optimal constructor; rrdset conflict

* rrdset final touches

* re-organization of rrdset object members

* prevent use-after-free

* dictionary dfe supports also counting of iterations

* rrddim managed by dictionary

* rrd.h cleanup

* DICTIONARY_ITEM now is referencing actual dictionary items in the code

* removed rrdset linked list

* Revert "removed rrdset linked list"

This reverts commit 690d6a588b4b99619c2c5e10f84e8f868ae6def5.

* removed rrdset linked list

* added comments

* Switch chart uuid to static allocation in rrdset
Remove unused functions

* rrdset_archive() and friends...

* always create rrdfamily

* enable ml_free_dimension

* rrddim_foreach done with dfe

* most custom rrddim loops replaced with rrddim_foreach

* removed accesses to rrddim->dimensions

* removed locks that are no longer needed

* rrdsetvar is now managed by the dictionary

* set rrdset is rrdsetvar, fixes https://github.com/netdata/netdata/pull/13646#issuecomment-1242574853

* conflict callback of rrdsetvar now properly checks if it has to reset the variable

* dictionary registered callbacks accept as first parameter the DICTIONARY_ITEM

* dictionary dfe now uses internal counter to report; avoided excess variables defined with dfe

* dictionary walkthrough callbacks get dictionary acquired items

* dictionary reference counters that can be dupped from zero

* added advanced functions for get and del

* rrdvar managed by dictionaries

* thread safety for rrdsetvar

* faster rrdvar initialization

* rrdvar string lengths should match in all add, del, get functions

* rrdvar internals hidden from the rest of the world

* rrdvar is now acquired throughout netdata

* hide the internal structures of rrdsetvar

* rrdsetvar is now acquired through out netdata

* rrddimvar managed by dictionary; rrddimvar linked list removed; rrddimvar structures hidden from the rest of netdata

* better error handling

* dont create variables if not initialized for health

* dont create variables if not initialized for health again

* rrdfamily is now managed by dictionaries; references of it are acquired dictionary items

* type checking on acquired objects

* rrdcalc renaming of functions

* type checking for rrdfamily_acquired

* rrdcalc managed by dictionaries

* rrdcalc double free fix

* host rrdvars is always needed

* attempt to fix deadlock 1

* attempt to fix deadlock 2

* Remove unused variable

* attempt to fix deadlock 3

* snprintfz

* rrdcalc index in rrdset fix

* Stop storing active charts and computing chart hashes

* Remove store active chart function

* Remove compute chart hash function

* Remove sql_store_chart_hash function

* Remove store_active_dimension function

* dictionary delayed destruction

* formatting and cleanup

* zero dictionary base on rrdsetvar

* added internal error to log delayed destructions of dictionaries

* typo in rrddimvar

* added debugging info to dictionary

* debug info

* fix for rrdcalc keys being empty

* remove forgotten unlock

* remove deadlock

* Switch to metadata version 5 and drop
  chart_hash
  chart_hash_map
  chart_active
  dimension_active
  v_chart_hash

* SQL cosmetic changes

* do not busy wait while destroying a referenced dictionary

* remove deadlock

* code cleanup; re-organization;

* fast cleanup and flushing of dictionaries

* number formatting fixes

* do not delete configured alerts when archiving a chart

* rrddim obsolete linked list management outside dictionaries

* removed duplicate contexts call

* fix crash when rrdfamily is not initialized

* dont keep rrddimvar referenced

* properly cleanup rrdvar

* removed some locks

* Do not attempt to cleanup chart_hash / chart_hash_map

* rrdcalctemplate managed by dictionary

* register callbacks on the right dictionary

* removed some more locks

* rrdcalc secondary index replaced with linked-list; rrdcalc labels updates are now executed by health thread

* when looking up for an alarm look using both chart id and chart name

* host initialization a bit more modular

* init rrdlabels on host update

* preparation for dictionary views

* improved comment

* unused variables without internal checks

* service threads isolation and worker info

* more worker info in service thread

* thread cancelability debugging with internal checks

* strings data races addressed; fixes https://github.com/netdata/netdata/issues/13647

* dictionary modularization

* Remove unused SQL statement definition

* unit-tested thread safety of dictionaries; removed data race conditions on dictionaries and strings; dictionaries now can detect if the caller is holds a write lock and automatically all the calls become their unsafe versions; all direct calls to unsafe version is eliminated

* remove worker_is_idle() from the exit of service functions, because we lose the lock time between loops

* rewritten dictionary to have 2 separate locks, one for indexing and another for traversal

* Update collectors/cgroups.plugin/sys_fs_cgroup.c

Co-authored-by: Vladimir Kobal <vlad@prokk.net>

* Update collectors/cgroups.plugin/sys_fs_cgroup.c

Co-authored-by: Vladimir Kobal <vlad@prokk.net>

* Update collectors/proc.plugin/proc_net_dev.c

Co-authored-by: Vladimir Kobal <vlad@prokk.net>

* fix memory leak in rrdset cache_dir

* minor dictionary changes

* dont use index locks in single threaded

* obsolete dict option

* rrddim options and flags separation; rrdset_done() optimization to keep array of reference pointers to rrddim;

* fix jump on uninitialized value in dictionary; remove double free of cache_dir

* addressed codacy findings

* removed debugging code

* use the private refcount on dictionaries

* make dictionary item desctructors work on dictionary destruction; strictier control on dictionary API; proper cleanup sequence on rrddim;

* more dictionary statistics

* global statistics about dictionary operations, memory, items, callbacks

* dictionary support for views - missing the public API

* removed warning about unused parameter

* chart and context name for cloud

* chart and context name for cloud, again

* dictionary statistics fixed; first implementation of dictionary views - not currently used

* only the master can globally delete an item

* context needs netdata prefix

* fix context and chart it of spins

* fix for host variables when health is not enabled

* run garbage collector on item insert too

* Fix info message; remove extra "using"

* update dict unittest for new placement of garbage collector

* we need RRDHOST->rrdvars for maintaining custom host variables

* Health initialization needs the host->host_uuid

* split STRING to its own files; no code changes other than that

* initialize health unconditionally

* unit tests do not pollute the global scope with their variables

* Skip initialization when creating archived hosts on startup. When a child connects it will initialize properly

Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
Co-authored-by: Vladimir Kobal <vlad@prokk.net>
2022-09-19 23:46:13 +03:00

1574 lines
69 KiB
C
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// SPDX-License-Identifier: GPL-3.0-or-later
#include "common.h"
#include "buildinfo.h"
#include "static_threads.h"
int netdata_zero_metrics_enabled;
int netdata_anonymous_statistics_enabled;
struct netdata_static_thread *static_threads;
struct config netdata_config = {
.first_section = NULL,
.last_section = NULL,
.mutex = NETDATA_MUTEX_INITIALIZER,
.index = {
.avl_tree = {
.root = NULL,
.compar = appconfig_section_compare
},
.rwlock = AVL_LOCK_INITIALIZER
}
};
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);
send_statistics("EXIT", ret?"ERROR":"OK","-");
char agent_crash_file[FILENAME_MAX + 1];
char agent_incomplete_shutdown_file[FILENAME_MAX + 1];
snprintfz(agent_crash_file, FILENAME_MAX, "%s/.agent_crash", netdata_configured_varlib_dir);
snprintfz(agent_incomplete_shutdown_file, FILENAME_MAX, "%s/.agent_incomplete_shutdown", netdata_configured_varlib_dir);
(void) rename(agent_crash_file, agent_incomplete_shutdown_file);
// cleanup/save the database and exit
info("EXIT: cleaning up the database...");
rrdhost_cleanup_all();
if(!ret) {
// exit cleanly
// stop everything
info("EXIT: stopping static threads...");
#ifdef ENABLE_ACLK
aclk_sync_exit_all();
#endif
cancel_main_threads();
// free the database
info("EXIT: freeing database memory...");
#ifdef ENABLE_DBENGINE
for(int tier = 0; tier < storage_tiers ; tier++)
rrdeng_prepare_exit(multidb_ctx[tier]);
#endif
rrdhost_free_all();
#ifdef ENABLE_DBENGINE
for(int tier = 0; tier < storage_tiers ; tier++)
rrdeng_exit(multidb_ctx[tier]);
#endif
}
sql_close_context_database();
sql_close_database();
// 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);
}
#ifdef ENABLE_HTTPS
security_clean_openssl();
#endif
info("EXIT: all done - netdata is now exiting - bye bye...");
(void) unlink(agent_incomplete_shutdown_file);
exit(ret);
}
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 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_static_threaded)
static_threads[i].enabled = static_threaded;
}
}
int make_dns_decision(const char *section_name, const char *config_name, const char *default_value, SIMPLE_PATTERN *p)
{
char *value = config_get(section_name,config_name,default_value);
if(!strcmp("yes",value))
return 1;
if(!strcmp("no",value))
return 0;
if(strcmp("heuristic",value))
error("Invalid configuration option '%s' for '%s'/'%s'. Valid options are 'yes', 'no' and 'heuristic'. Proceeding with 'heuristic'",
value, section_name, config_name);
return simple_pattern_is_potential_name(p);
}
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);
web_client_streaming_rate_t =
config_get_number(CONFIG_SECTION_WEB, "accept a streaming request every seconds", web_client_streaming_rate_t);
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_connections_dns =
make_dns_decision(CONFIG_SECTION_WEB, "allow connections by dns", "heuristic", web_allow_connections_from);
web_allow_dashboard_from =
simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow dashboard from", "localhost *"),
NULL, SIMPLE_PATTERN_EXACT);
web_allow_dashboard_dns =
make_dns_decision(CONFIG_SECTION_WEB, "allow dashboard by dns", "heuristic", web_allow_dashboard_from);
web_allow_badges_from =
simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow badges from", "*"), NULL, SIMPLE_PATTERN_EXACT);
web_allow_badges_dns =
make_dns_decision(CONFIG_SECTION_WEB, "allow badges by dns", "heuristic", web_allow_badges_from);
web_allow_registry_from =
simple_pattern_create(config_get(CONFIG_SECTION_REGISTRY, "allow from", "*"), NULL, SIMPLE_PATTERN_EXACT);
web_allow_registry_dns = make_dns_decision(CONFIG_SECTION_REGISTRY, "allow by dns", "heuristic",
web_allow_registry_from);
web_allow_streaming_from = simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow streaming from", "*"),
NULL, SIMPLE_PATTERN_EXACT);
web_allow_streaming_dns = make_dns_decision(CONFIG_SECTION_WEB, "allow streaming by dns", "heuristic",
web_allow_streaming_from);
// Note the default is not heuristic, the wildcards could match DNS but the intent is ip-addresses.
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.* UNKNOWN"), NULL, SIMPLE_PATTERN_EXACT);
web_allow_netdataconf_dns =
make_dns_decision(CONFIG_SECTION_WEB, "allow netdata.conf by dns", "no", web_allow_netdataconf_from);
web_allow_mgmt_from =
simple_pattern_create(config_get(CONFIG_SECTION_WEB, "allow management from", "localhost"),
NULL, SIMPLE_PATTERN_EXACT);
web_allow_mgmt_dns =
make_dns_decision(CONFIG_SECTION_WEB, "allow management by dns","heuristic",web_allow_mgmt_from);
#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 */
}
// killpid kills pid with SIGTERM.
int killpid(pid_t pid) {
int ret;
debug(D_EXIT, "Request to kill pid %d", pid);
errno = 0;
ret = kill(pid, SIGTERM);
if (ret == -1) {
switch(errno) {
case ESRCH:
// We wanted the process to exit so just let the caller handle.
return ret;
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;
usec_t 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 main thread: %s", static_threads[i].name);
netdata_thread_cancel(*static_threads[i].thread);
found++;
}
}
netdata_exit = 1;
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("Main thread %s takes too long to exit. Giving up...", static_threads[i].name);
}
}
else
info("All threads finished.");
for (i = 0; static_threads[i].name != NULL ; i++)
freez(static_threads[i].thread);
free(static_threads);
}
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"},
{ 'd', "Fork. Run in the background.", 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) 2016-2020, Netdata, Inc. <info@netdata.cloud>\n"
" Released under GNU General Public License v3 or later.\n"
" All rights reserved.\n"
"\n"
" Home Page : https://netdata.cloud\n"
" Source Code: https://github.com/netdata/netdata\n"
" Docs : https://learn.netdata.cloud\n"
" Support : https://github.com/netdata/netdata/issues\n"
" License : https://github.com/netdata/netdata/blob/master/LICENSE.md\n"
"\n"
" Twitter : https://twitter.com/linuxnetdata\n"
" Facebook : https://www.facebook.com/linuxnetdata/\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 sqlite-check Check metadata database integrity and exit.\n\n"
" -W sqlite-fix Check metadata database integrity, fix if needed and exit.\n\n"
" -W sqlite-compact Reclaim metadata database unused space and exit.\n\n"
#ifdef ENABLE_DBENGINE
" -W createdataset=N Create a DB engine dataset of N seconds and exit.\n\n"
" -W stresstest=A,B,C,D,E,F,G\n"
" Run a DB engine stress test for A seconds,\n"
" with B writers and C readers, with a ramp up\n"
" time of D seconds for writers, a page cache\n"
" size of E MiB, an optional disk space limit\n"
" of F MiB, G libuv workers (default 16) and exit.\n\n"
#endif
" -W set section option value\n"
" set netdata.conf option from the command line.\n\n"
" -W buildinfo Print the version, the configure options,\n"
" a list of optional features, and whether they\n"
" are enabled or not.\n\n"
" -W buildinfojson Print the version, the configure options,\n"
" a list of optional features, and whether they\n"
" are enabled or not, in JSON format.\n\n"
" -W simple-pattern pattern string\n"
" Check if string matches pattern and exit.\n\n"
" -W \"claim -token=TOKEN -rooms=ROOM1,ROOM2\"\n"
" Claim the agent to the workspace rooms pointed to by TOKEN and ROOM*.\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;
}
#ifdef ENABLE_HTTPS
static void security_init(){
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/ssl/key.pem",netdata_configured_user_config_dir);
security_key = config_get(CONFIG_SECTION_WEB, "ssl key", filename);
snprintfz(filename, FILENAME_MAX, "%s/ssl/cert.pem",netdata_configured_user_config_dir);
security_cert = config_get(CONFIG_SECTION_WEB, "ssl certificate", filename);
tls_version = config_get(CONFIG_SECTION_WEB, "tls version", "1.3");
tls_ciphers = config_get(CONFIG_SECTION_WEB, "tls ciphers", "none");
security_openssl_library();
}
#endif
static 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_LOGS, "debug", filename);
snprintfz(filename, FILENAME_MAX, "%s/error.log", netdata_configured_log_dir);
stderr_filename = config_get(CONFIG_SECTION_LOGS, "error", filename);
snprintfz(filename, FILENAME_MAX, "%s/access.log", netdata_configured_log_dir);
stdaccess_filename = config_get(CONFIG_SECTION_LOGS, "access", filename);
#ifdef ENABLE_ACLK
aclklog_enabled = config_get_boolean(CONFIG_SECTION_CLOUD, "conversation log", CONFIG_BOOLEAN_NO);
if (aclklog_enabled) {
snprintfz(filename, FILENAME_MAX, "%s/aclk.log", netdata_configured_log_dir);
aclklog_filename = config_get(CONFIG_SECTION_CLOUD, "conversation log file", filename);
}
#endif
char deffacility[8];
snprintfz(deffacility,7,"%s","daemon");
facility_log = config_get(CONFIG_SECTION_LOGS, "facility", deffacility);
error_log_throttle_period = config_get_number(CONFIG_SECTION_LOGS, "errors flood protection period", error_log_throttle_period);
error_log_errors_per_period = (unsigned long)config_get_number(CONFIG_SECTION_LOGS, "errors to trigger flood protection", (long long int)error_log_errors_per_period);
error_log_errors_per_period_backup = error_log_errors_per_period;
setenv("NETDATA_ERRORS_THROTTLE_PERIOD", config_get(CONFIG_SECTION_LOGS, "errors flood protection period" , ""), 1);
setenv("NETDATA_ERRORS_PER_PERIOD", config_get(CONFIG_SECTION_LOGS, "errors to trigger flood protection", ""), 1);
}
char *initialize_lock_directory_path(char *prefix)
{
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/lock", prefix);
return config_get(CONFIG_SECTION_DIRECTORIES, "lock", filename);
}
static void backwards_compatible_config() {
// 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, "config directory",
CONFIG_SECTION_DIRECTORIES, "config");
config_move(CONFIG_SECTION_GLOBAL, "stock config directory",
CONFIG_SECTION_DIRECTORIES, "stock config");
config_move(CONFIG_SECTION_GLOBAL, "log directory",
CONFIG_SECTION_DIRECTORIES, "log");
config_move(CONFIG_SECTION_GLOBAL, "web files directory",
CONFIG_SECTION_DIRECTORIES, "web");
config_move(CONFIG_SECTION_GLOBAL, "cache directory",
CONFIG_SECTION_DIRECTORIES, "cache");
config_move(CONFIG_SECTION_GLOBAL, "lib directory",
CONFIG_SECTION_DIRECTORIES, "lib");
config_move(CONFIG_SECTION_GLOBAL, "home directory",
CONFIG_SECTION_DIRECTORIES, "home");
config_move(CONFIG_SECTION_GLOBAL, "lock directory",
CONFIG_SECTION_DIRECTORIES, "lock");
config_move(CONFIG_SECTION_GLOBAL, "plugins directory",
CONFIG_SECTION_DIRECTORIES, "plugins");
config_move(CONFIG_SECTION_HEALTH, "health configuration directory",
CONFIG_SECTION_DIRECTORIES, "health config");
config_move(CONFIG_SECTION_HEALTH, "stock health configuration directory",
CONFIG_SECTION_DIRECTORIES, "stock health config");
config_move(CONFIG_SECTION_REGISTRY, "registry db directory",
CONFIG_SECTION_DIRECTORIES, "registry");
config_move(CONFIG_SECTION_GLOBAL, "debug log",
CONFIG_SECTION_LOGS, "debug");
config_move(CONFIG_SECTION_GLOBAL, "error log",
CONFIG_SECTION_LOGS, "error");
config_move(CONFIG_SECTION_GLOBAL, "access log",
CONFIG_SECTION_LOGS, "access");
config_move(CONFIG_SECTION_GLOBAL, "facility log",
CONFIG_SECTION_LOGS, "facility");
config_move(CONFIG_SECTION_GLOBAL, "errors flood protection period",
CONFIG_SECTION_LOGS, "errors flood protection period");
config_move(CONFIG_SECTION_GLOBAL, "errors to trigger flood protection",
CONFIG_SECTION_LOGS, "errors to trigger flood protection");
config_move(CONFIG_SECTION_GLOBAL, "debug flags",
CONFIG_SECTION_LOGS, "debug flags");
config_move(CONFIG_SECTION_GLOBAL, "TZ environment variable",
CONFIG_SECTION_ENV_VARS, "TZ");
config_move(CONFIG_SECTION_PLUGINS, "PATH environment variable",
CONFIG_SECTION_ENV_VARS, "PATH");
config_move(CONFIG_SECTION_PLUGINS, "PYTHONPATH environment variable",
CONFIG_SECTION_ENV_VARS, "PYTHONPATH");
config_move(CONFIG_SECTION_STATSD, "enabled",
CONFIG_SECTION_PLUGINS, "statsd");
config_move(CONFIG_SECTION_GLOBAL, "memory mode",
CONFIG_SECTION_DB, "mode");
config_move(CONFIG_SECTION_GLOBAL, "history",
CONFIG_SECTION_DB, "retention");
config_move(CONFIG_SECTION_GLOBAL, "update every",
CONFIG_SECTION_DB, "update every");
config_move(CONFIG_SECTION_GLOBAL, "page cache size",
CONFIG_SECTION_DB, "dbengine page cache size MB");
config_move(CONFIG_SECTION_DB, "page cache size",
CONFIG_SECTION_DB, "dbengine page cache size MB");
config_move(CONFIG_SECTION_GLOBAL, "page cache uses malloc",
CONFIG_SECTION_DB, "dbengine page cache with malloc");
config_move(CONFIG_SECTION_DB, "page cache with malloc",
CONFIG_SECTION_DB, "dbengine page cache with malloc");
config_move(CONFIG_SECTION_GLOBAL, "dbengine disk space",
CONFIG_SECTION_DB, "dbengine disk space MB");
config_move(CONFIG_SECTION_GLOBAL, "dbengine multihost disk space",
CONFIG_SECTION_DB, "dbengine multihost disk space MB");
config_move(CONFIG_SECTION_GLOBAL, "memory deduplication (ksm)",
CONFIG_SECTION_DB, "memory deduplication (ksm)");
config_move(CONFIG_SECTION_GLOBAL, "dbengine page fetch timeout",
CONFIG_SECTION_DB, "dbengine page fetch timeout secs");
config_move(CONFIG_SECTION_GLOBAL, "dbengine page fetch retries",
CONFIG_SECTION_DB, "dbengine page fetch retries");
config_move(CONFIG_SECTION_GLOBAL, "dbengine extent pages",
CONFIG_SECTION_DB, "dbengine pages per extent");
config_move(CONFIG_SECTION_GLOBAL, "cleanup obsolete charts after seconds",
CONFIG_SECTION_DB, "cleanup obsolete charts after secs");
config_move(CONFIG_SECTION_GLOBAL, "gap when lost iterations above",
CONFIG_SECTION_DB, "gap when lost iterations above");
config_move(CONFIG_SECTION_GLOBAL, "cleanup orphan hosts after seconds",
CONFIG_SECTION_DB, "cleanup orphan hosts after secs");
config_move(CONFIG_SECTION_GLOBAL, "delete obsolete charts files",
CONFIG_SECTION_DB, "delete obsolete charts files");
config_move(CONFIG_SECTION_GLOBAL, "delete orphan hosts files",
CONFIG_SECTION_DB, "delete orphan hosts files");
config_move(CONFIG_SECTION_GLOBAL, "enable zero metrics",
CONFIG_SECTION_DB, "enable zero metrics");
}
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 update frequency
default_rrd_update_every = (int) config_get_number(CONFIG_SECTION_DB, "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);
default_rrd_update_every = UPDATE_EVERY;
config_set_number(CONFIG_SECTION_DB, "update every", default_rrd_update_every);
}
// ------------------------------------------------------------------------
// get default memory mode for the database
{
const char *mode = config_get(CONFIG_SECTION_DB, "mode", rrd_memory_mode_name(default_rrd_memory_mode));
default_rrd_memory_mode = rrd_memory_mode_id(mode);
if(strcmp(mode, rrd_memory_mode_name(default_rrd_memory_mode)) != 0) {
error("Invalid memory mode '%s' given. Using '%s'", mode, rrd_memory_mode_name(default_rrd_memory_mode));
config_set(CONFIG_SECTION_DB, "mode", rrd_memory_mode_name(default_rrd_memory_mode));
}
}
// ------------------------------------------------------------------------
// get default database size
if(default_rrd_memory_mode != RRD_MEMORY_MODE_DBENGINE && default_rrd_memory_mode != RRD_MEMORY_MODE_NONE) {
default_rrd_history_entries = (int)config_get_number(
CONFIG_SECTION_DB, "retention",
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_DB, "retention", h);
default_rrd_history_entries = (int)h;
}
}
// ------------------------------------------------------------------------
// get system paths
netdata_configured_user_config_dir = config_get(CONFIG_SECTION_DIRECTORIES, "config", netdata_configured_user_config_dir);
netdata_configured_stock_config_dir = config_get(CONFIG_SECTION_DIRECTORIES, "stock config", netdata_configured_stock_config_dir);
netdata_configured_log_dir = config_get(CONFIG_SECTION_DIRECTORIES, "log", netdata_configured_log_dir);
netdata_configured_web_dir = config_get(CONFIG_SECTION_DIRECTORIES, "web", netdata_configured_web_dir);
netdata_configured_cache_dir = config_get(CONFIG_SECTION_DIRECTORIES, "cache", netdata_configured_cache_dir);
netdata_configured_varlib_dir = config_get(CONFIG_SECTION_DIRECTORIES, "lib", netdata_configured_varlib_dir);
char *env_home=getenv("HOME");
netdata_configured_home_dir = config_get(CONFIG_SECTION_DIRECTORIES, "home", env_home?env_home:netdata_configured_home_dir);
netdata_configured_lock_dir = initialize_lock_directory_path(netdata_configured_varlib_dir);
{
pluginsd_initialize_plugin_directories();
netdata_configured_primary_plugins_dir = plugin_directories[PLUGINSD_STOCK_PLUGINS_DIRECTORY_PATH];
}
#ifdef ENABLE_DBENGINE
// ------------------------------------------------------------------------
// get default Database Engine page cache size in MiB
db_engine_use_malloc = config_get_boolean(CONFIG_SECTION_DB, "dbengine page cache with malloc", CONFIG_BOOLEAN_NO);
default_rrdeng_page_cache_mb = (int) config_get_number(CONFIG_SECTION_DB, "dbengine page cache size MB", default_rrdeng_page_cache_mb);
if(default_rrdeng_page_cache_mb < RRDENG_MIN_PAGE_CACHE_SIZE_MB) {
error("Invalid page cache size %d given. Defaulting to %d.", default_rrdeng_page_cache_mb, RRDENG_MIN_PAGE_CACHE_SIZE_MB);
default_rrdeng_page_cache_mb = RRDENG_MIN_PAGE_CACHE_SIZE_MB;
config_set_number(CONFIG_SECTION_DB, "dbengine page cache size MB", default_rrdeng_page_cache_mb);
}
// ------------------------------------------------------------------------
// get default Database Engine disk space quota in MiB
default_rrdeng_disk_quota_mb = (int) config_get_number(CONFIG_SECTION_DB, "dbengine disk space MB", default_rrdeng_disk_quota_mb);
if(default_rrdeng_disk_quota_mb < RRDENG_MIN_DISK_SPACE_MB) {
error("Invalid dbengine disk space %d given. Defaulting to %d.", default_rrdeng_disk_quota_mb, RRDENG_MIN_DISK_SPACE_MB);
default_rrdeng_disk_quota_mb = RRDENG_MIN_DISK_SPACE_MB;
config_set_number(CONFIG_SECTION_DB, "dbengine disk space MB", default_rrdeng_disk_quota_mb);
}
default_multidb_disk_quota_mb = (int) config_get_number(CONFIG_SECTION_DB, "dbengine multihost disk space MB", compute_multidb_diskspace());
if(default_multidb_disk_quota_mb < RRDENG_MIN_DISK_SPACE_MB) {
error("Invalid multidb disk space %d given. Defaulting to %d.", default_multidb_disk_quota_mb, default_rrdeng_disk_quota_mb);
default_multidb_disk_quota_mb = default_rrdeng_disk_quota_mb;
config_set_number(CONFIG_SECTION_DB, "dbengine multihost disk space MB", default_multidb_disk_quota_mb);
}
#else
if (default_rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
error_report("RRD_MEMORY_MODE_DBENGINE is not supported in this platform. The agent will use db mode 'save' instead.");
default_rrd_memory_mode = RRD_MEMORY_MODE_SAVE;
}
#endif
// ------------------------------------------------------------------------
netdata_configured_host_prefix = config_get(CONFIG_SECTION_GLOBAL, "host access prefix", "");
verify_netdata_host_prefix();
// --------------------------------------------------------------------
// get KSM settings
#ifdef MADV_MERGEABLE
enable_ksm = config_get_boolean(CONFIG_SECTION_DB, "memory deduplication (ksm)", enable_ksm);
#endif
// --------------------------------------------------------------------
// metric correlations
enable_metric_correlations = config_get_boolean(CONFIG_SECTION_GLOBAL, "enable metric correlations", enable_metric_correlations);
default_metric_correlations_method = weights_string_to_method(config_get(
CONFIG_SECTION_GLOBAL, "metric correlations method",
weights_method_to_string(default_metric_correlations_method)));
// --------------------------------------------------------------------
rrdset_free_obsolete_time = config_get_number(CONFIG_SECTION_DB, "cleanup obsolete charts after secs", rrdset_free_obsolete_time);
// Current chart locking and invalidation scheme doesn't prevent Netdata from segmentation faults if a short
// cleanup delay is set. Extensive stress tests showed that 10 seconds is quite a safe delay. Look at
// https://github.com/netdata/netdata/pull/11222#issuecomment-868367920 for more information.
if (rrdset_free_obsolete_time < 10) {
rrdset_free_obsolete_time = 10;
info("The \"cleanup obsolete charts after seconds\" option was set to 10 seconds.");
config_set_number(CONFIG_SECTION_DB, "cleanup obsolete charts after secs", rrdset_free_obsolete_time);
}
gap_when_lost_iterations_above = (int)config_get_number(CONFIG_SECTION_DB, "gap when lost iterations above", gap_when_lost_iterations_above);
if (gap_when_lost_iterations_above < 1) {
gap_when_lost_iterations_above = 1;
config_set_number(CONFIG_SECTION_DB, "gap when lost iterations above", gap_when_lost_iterations_above);
}
// --------------------------------------------------------------------
// rrdcontext
rrdcontext_enabled = config_get_boolean(CONFIG_SECTION_CLOUD, "rrdcontexts", rrdcontext_enabled);
// --------------------------------------------------------------------
// get various system parameters
get_system_HZ();
get_system_cpus();
get_system_pid_max();
}
int load_netdata_conf(char *filename, char overwrite_used) {
errno = 0;
int ret = 0;
if(filename && *filename) {
ret = config_load(filename, overwrite_used, NULL);
if(!ret)
error("CONFIG: cannot load config file '%s'.", filename);
}
else {
filename = strdupz_path_subpath(netdata_configured_user_config_dir, "netdata.conf");
ret = config_load(filename, overwrite_used, NULL);
if(!ret) {
info("CONFIG: cannot load user config '%s'. Will try the stock version.", filename);
freez(filename);
filename = strdupz_path_subpath(netdata_configured_stock_config_dir, "netdata.conf");
ret = config_load(filename, overwrite_used, NULL);
if(!ret)
info("CONFIG: cannot load stock config '%s'. Running with internal defaults.", filename);
}
freez(filename);
}
return ret;
}
// coverity[ +tainted_string_sanitize_content : arg-0 ]
static inline void coverity_remove_taint(char *s)
{
(void)s;
}
int get_system_info(struct rrdhost_system_info *system_info) {
char *script;
script = mallocz(sizeof(char) * (strlen(netdata_configured_primary_plugins_dir) + strlen("system-info.sh") + 2));
sprintf(script, "%s/%s", netdata_configured_primary_plugins_dir, "system-info.sh");
if (unlikely(access(script, R_OK) != 0)) {
info("System info script %s not found.",script);
freez(script);
return 1;
}
pid_t command_pid;
info("Executing %s", script);
FILE *fp = mypopen(script, &command_pid);
if(fp) {
char line[200 + 1];
// Removed the double strlens, if the Coverity tainted string warning reappears I'll revert.
// One time init code, but I'm curious about the warning...
while (fgets(line, 200, fp) != NULL) {
char *value=line;
while (*value && *value != '=') value++;
if (*value=='=') {
*value='\0';
value++;
char *end = value;
while (*end && *end != '\n') end++;
*end = '\0'; // Overwrite newline if present
coverity_remove_taint(line); // I/O is controlled result of system_info.sh - not tainted
coverity_remove_taint(value);
if(unlikely(rrdhost_set_system_info_variable(system_info, line, value))) {
info("Unexpected environment variable %s=%s", line, value);
}
else {
info("%s=%s", line, value);
setenv(line, value, 1);
}
}
}
mypclose(fp, command_pid);
}
freez(script);
return 0;
}
void set_silencers_filename() {
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/health.silencers.json", netdata_configured_varlib_dir);
silencers_filename = config_get(CONFIG_SECTION_HEALTH, "silencers file", filename);
}
/* Any config setting that can be accessed without a default value i.e. configget(...,...,NULL) *MUST*
be set in this procedure to be called in all the relevant code paths.
*/
void post_conf_load(char **user)
{
// --------------------------------------------------------------------
// 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:"");
}
// --------------------------------------------------------------------
// Check if the cloud is enabled
#if defined( DISABLE_CLOUD ) || !defined( ENABLE_ACLK )
netdata_cloud_setting = 0;
#else
netdata_cloud_setting = appconfig_get_boolean(&cloud_config, CONFIG_SECTION_GLOBAL, "enabled", 1);
#endif
// This must be set before any point in the code that accesses it. Do not move it from this function.
appconfig_get(&cloud_config, CONFIG_SECTION_GLOBAL, "cloud base url", DEFAULT_CLOUD_BASE_URL);
}
int main(int argc, char **argv) {
int i;
int config_loaded = 0;
int dont_fork = 0;
bool close_open_fds = true;
size_t default_stacksize;
char *user = NULL;
static_threads = static_threads_get();
netdata_ready=0;
// set the name for logging
program_name = "netdata";
if (argc > 1 && strcmp(argv[1], SPAWN_SERVER_COMMAND_LINE_ARGUMENT) == 0) {
// don't run netdata, this is the spawn server
spawn_server();
exit(0);
}
// 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(load_netdata_conf(optarg, 1) != 1) {
error("Cannot load configuration file %s.", optarg);
return 1;
}
else {
debug(D_OPTIONS, "Configuration loaded from %s.", optarg);
post_conf_load(&user);
load_cloud_conf(1);
config_loaded = 1;
}
break;
case 'D':
dont_fork = 1;
break;
case 'd':
dont_fork = 0;
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=";
char* claim_string = "claim";
#ifdef ENABLE_DBENGINE
char* createdataset_string = "createdataset=";
char* stresstest_string = "stresstest=";
#endif
if(strcmp(optarg, "sqlite-check") == 0) {
sql_init_database(DB_CHECK_INTEGRITY, 0);
return 0;
}
if(strcmp(optarg, "sqlite-fix") == 0) {
sql_init_database(DB_CHECK_FIX_DB, 0);
return 0;
}
if(strcmp(optarg, "sqlite-compact") == 0) {
sql_init_database(DB_CHECK_RECLAIM_SPACE, 0);
return 0;
}
if(strcmp(optarg, "unittest") == 0) {
if (unit_test_static_threads())
return 1;
if (unit_test_buffer())
return 1;
if (unit_test_str2ld())
return 1;
if (unit_test_bitmap256())
return 1;
// No call to load the config file on this code-path
post_conf_load(&user);
get_netdata_configured_variables();
rrdcontext_enabled = CONFIG_BOOLEAN_NO;
default_rrd_update_every = 1;
default_rrd_memory_mode = RRD_MEMORY_MODE_RAM;
default_health_enabled = 0;
storage_tiers = 1;
registry_init();
if(rrd_init("unittest", NULL)) {
fprintf(stderr, "rrd_init failed for unittest\n");
return 1;
}
default_rrdpush_enabled = 0;
if(run_all_mockup_tests()) return 1;
if(unit_test_storage()) return 1;
#ifdef ENABLE_DBENGINE
if(test_dbengine()) return 1;
#endif
if(test_sqlite()) return 1;
if(string_unittest(10000)) return 1;
if (dictionary_unittest(10000))
return 1;
if (rrdlabels_unittest())
return 1;
if (ctx_unittest())
return 1;
fprintf(stderr, "\n\nALL TESTS PASSED\n\n");
return 0;
}
#ifdef ENABLE_ML_TESTS
else if(strcmp(optarg, "mltest") == 0) {
return test_ml(argc, argv);
}
#endif
#ifdef ENABLE_DBENGINE
else if(strcmp(optarg, "mctest") == 0) {
return mc_unittest();
}
else if(strcmp(optarg, "ctxtest") == 0) {
return ctx_unittest();
}
else if(strcmp(optarg, "dicttest") == 0) {
return dictionary_unittest(10000);
}
else if(strcmp(optarg, "stringtest") == 0) {
return string_unittest(10000);
}
else if(strcmp(optarg, "rrdlabelstest") == 0) {
return rrdlabels_unittest();
}
else if(strncmp(optarg, createdataset_string, strlen(createdataset_string)) == 0) {
optarg += strlen(createdataset_string);
unsigned history_seconds = strtoul(optarg, NULL, 0);
generate_dbengine_dataset(history_seconds);
return 0;
}
else if(strncmp(optarg, stresstest_string, strlen(stresstest_string)) == 0) {
char *endptr;
unsigned test_duration_sec = 0, dset_charts = 0, query_threads = 0, ramp_up_seconds = 0,
page_cache_mb = 0, disk_space_mb = 0, workers = 16;
optarg += strlen(stresstest_string);
test_duration_sec = (unsigned)strtoul(optarg, &endptr, 0);
if (',' == *endptr)
dset_charts = (unsigned)strtoul(endptr + 1, &endptr, 0);
if (',' == *endptr)
query_threads = (unsigned)strtoul(endptr + 1, &endptr, 0);
if (',' == *endptr)
ramp_up_seconds = (unsigned)strtoul(endptr + 1, &endptr, 0);
if (',' == *endptr)
page_cache_mb = (unsigned)strtoul(endptr + 1, &endptr, 0);
if (',' == *endptr)
disk_space_mb = (unsigned)strtoul(endptr + 1, &endptr, 0);
if (',' == *endptr)
workers = (unsigned)strtoul(endptr + 1, &endptr, 0);
if (workers > 1024)
workers = 1024;
char workers_str[16];
snprintf(workers_str, 15, "%u", workers);
setenv("UV_THREADPOOL_SIZE", workers_str, 1);
dbengine_stress_test(test_duration_sec, dset_charts, query_threads, ramp_up_seconds,
page_cache_mb, disk_space_mb);
return 0;
}
#endif
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 *haystack = argv[optind];
const char *needle = argv[optind + 1];
size_t len = strlen(needle) + 1;
char wildcarded[len];
SIMPLE_PATTERN *p = simple_pattern_create(haystack, 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", haystack, needle, wildcarded);
return 0;
}
else {
fprintf(stdout, "RESULT: NOT MATCHED - pattern '%s' does not match '%s', wildcarded '%s'\n", haystack, 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_LOGS, "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, "set2") == 0) {
if(optind + 4 > argc) {
fprintf(stderr, "%s", "\nUSAGE: -W set 'conf_file' 'section' 'key' 'value'\n\n"
" Overwrites settings of netdata.conf or cloud.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."
" conf_file can be \"cloud\" or \"netdata\".\n"
"\n"
);
return 1;
}
const char *conf_file = argv[optind]; /* "cloud" is cloud.conf, otherwise netdata.conf */
struct config *tmp_config = strcmp(conf_file, "cloud") ? &netdata_config : &cloud_config;
const char *section = argv[optind + 1];
const char *key = argv[optind + 2];
const char *value = argv[optind + 3];
optind += 4;
// 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
appconfig_set_default(tmp_config, 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");
load_netdata_conf(NULL, 0);
post_conf_load(&user);
}
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 if(strcmp(optarg, "get2") == 0) {
if(optind + 4 > argc) {
fprintf(stderr, "%s", "\nUSAGE: -W get2 'conf_file' 'section' 'key' 'value'\n\n"
" Prints settings of netdata.conf or cloud.conf\n"
"\n"
" These options interact with: -c netdata.conf\n"
" -c netdata.conf has to be given before -W get2.\n"
" conf_file can be \"cloud\" or \"netdata\".\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");
load_netdata_conf(NULL, 0);
post_conf_load(&user);
load_cloud_conf(1);
}
get_netdata_configured_variables();
const char *conf_file = argv[optind]; /* "cloud" is cloud.conf, otherwise netdata.conf */
struct config *tmp_config = strcmp(conf_file, "cloud") ? &netdata_config : &cloud_config;
const char *section = argv[optind + 1];
const char *key = argv[optind + 2];
const char *def = argv[optind + 3];
const char *value = appconfig_get(tmp_config, section, key, def);
printf("%s\n", value);
return 0;
}
else if(strncmp(optarg, claim_string, strlen(claim_string)) == 0) {
/* will trigger a claiming attempt when the agent is initialized */
claiming_pending_arguments = optarg + strlen(claim_string);
}
else if(strcmp(optarg, "buildinfo") == 0) {
printf("Version: %s %s\n", program_name, program_version);
print_build_info();
return 0;
}
else if(strcmp(optarg, "buildinfojson") == 0) {
print_build_info_json();
return 0;
}
else if(strcmp(optarg, "keepopenfds") == 0) {
// Internal dev option to skip closing inherited
// open FDs. Useful, when we want to run the agent
// under profiling tools that open/maintain their
// own FDs.
close_open_fds = false;
} 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
if (close_open_fds == true) {
// close all open file descriptors, except the standard ones
// the caller may have left open files (lxc-attach has this issue)
for(int fd = (int) (sysconf(_SC_OPEN_MAX) - 1); fd > 2; fd--)
if(fd_is_valid(fd))
close(fd);
}
#endif
if(!config_loaded)
{
load_netdata_conf(NULL, 0);
post_conf_load(&user);
load_cloud_conf(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
// initialize the system clocks
clocks_init();
// prepare configuration environment variables for the plugins
setenv("UV_THREADPOOL_SIZE", config_get(CONFIG_SECTION_GLOBAL, "libuv worker threads", "16"), 1);
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_user_config_dir) == -1)
fatal("Cannot cd to '%s'", netdata_configured_user_config_dir);
// Get execution path before switching user to avoid permission issues
get_netdata_execution_path();
}
{
// --------------------------------------------------------------------
// get the debugging flags from the configuration file
char *flags = config_get(CONFIG_SECTION_LOGS, "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();
// initialize the log files
open_all_log_files();
get_system_timezone();
// --------------------------------------------------------------------
// get the certificate and start security
#ifdef ENABLE_HTTPS
security_init();
#endif
// --------------------------------------------------------------------
// This is the safest place to start the SILENCERS structure
set_silencers_filename();
health_initialize_global_silencers();
// --------------------------------------------------------------------
// Initialize ML configuration
ml_init();
// --------------------------------------------------------------------
// 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();
}
// --------------------------------------------------------------------
// 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();
}
#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", (size_t)rlimit_nofile.rlim_cur, (size_t)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());
netdata_threads_init_after_fork((size_t)config_get_number(CONFIG_SECTION_GLOBAL, "pthread stack size", (long)default_stacksize));
// initialize internal registry
registry_init();
// fork the spawn server
spawn_init();
/*
* Libuv uv_spawn() uses SIGCHLD internally:
* https://github.com/libuv/libuv/blob/cc51217a317e96510fbb284721d5e6bc2af31e33/src/unix/process.c#L485
* and inadvertently replaces the netdata signal handler which was setup during initialization.
* Thusly, we must explicitly restore the signal handler for SIGCHLD.
* Warning: extreme care is needed when mixing and matching POSIX and libuv.
*/
signals_restore_SIGCHLD();
// ------------------------------------------------------------------------
// initialize rrd, registry, health, rrdpush, etc.
netdata_anonymous_statistics_enabled=-1;
struct rrdhost_system_info *system_info = callocz(1, sizeof(struct rrdhost_system_info));
get_system_info(system_info);
system_info->hops = 0;
get_install_type(&system_info->install_type, &system_info->prebuilt_arch, &system_info->prebuilt_dist);
if(rrd_init(netdata_configured_hostname, system_info))
fatal("Cannot initialize localhost instance with name '%s'.", netdata_configured_hostname);
char agent_crash_file[FILENAME_MAX + 1];
char agent_incomplete_shutdown_file[FILENAME_MAX + 1];
snprintfz(agent_incomplete_shutdown_file, FILENAME_MAX, "%s/.agent_incomplete_shutdown", netdata_configured_varlib_dir);
int incomplete_shutdown_detected = (unlink(agent_incomplete_shutdown_file) == 0);
snprintfz(agent_crash_file, FILENAME_MAX, "%s/.agent_crash", netdata_configured_varlib_dir);
int crash_detected = (unlink(agent_crash_file) == 0);
int fd = open(agent_crash_file, O_WRONLY | O_CREAT | O_TRUNC, 444);
if (fd >= 0)
close(fd);
// ------------------------------------------------------------------------
// Claim netdata agent to a cloud endpoint
if (claiming_pending_arguments)
claim_agent(claiming_pending_arguments);
load_claiming_state();
// ------------------------------------------------------------------------
// enable log flood protection
error_log_limit_reset();
// Load host labels
reload_host_labels();
// ------------------------------------------------------------------------
// spawn the threads
web_server_config_options();
netdata_zero_metrics_enabled = config_get_boolean_ondemand(CONFIG_SECTION_DB, "enable zero metrics", CONFIG_BOOLEAN_NO);
set_late_global_environment();
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);
}
// ------------------------------------------------------------------------
// Initialize netdata agent command serving from cli and signals
commands_init();
info("netdata initialization completed. Enjoy real-time performance monitoring!");
netdata_ready = 1;
send_statistics("START", "-", "-");
if (crash_detected)
send_statistics("CRASH", "-", "-");
if (incomplete_shutdown_detected)
send_statistics("INCOMPLETE_SHUTDOWN", "-", "-");
//check if ANALYTICS needs to start
if (netdata_anonymous_statistics_enabled == 1) {
for (i = 0; static_threads[i].name != NULL; i++) {
if (!strncmp(static_threads[i].name, "ANALYTICS", 9)) {
struct netdata_static_thread *st = &static_threads[i];
st->thread = mallocz(sizeof(netdata_thread_t));
st->enabled = 1;
debug(D_SYSTEM, "Starting thread %s.", st->name);
netdata_thread_create(st->thread, st->name, NETDATA_THREAD_OPTION_DEFAULT, st->start_routine, st);
}
}
}
// ------------------------------------------------------------------------
// Report ACLK build failure
#ifndef ENABLE_ACLK
error("This agent doesn't have ACLK.");
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/.aclk_report_sent", netdata_configured_varlib_dir);
if (netdata_anonymous_statistics_enabled > 0 && access(filename, F_OK)) { // -1 -> not initialized
send_statistics("ACLK_DISABLED", "-", "-");
int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 444);
if (fd == -1)
error("Cannot create file '%s'. Please fix this.", filename);
else
close(fd);
}
#endif
// ------------------------------------------------------------------------
// unblock signals
signals_unblock();
// ------------------------------------------------------------------------
// Handle signals
signals_handle();
// should never reach this point
// but we need it for rpmlint #2752
return 1;
}
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