1254 lines
43 KiB
C
1254 lines
43 KiB
C
// SPDX-License-Identifier: GPL-3.0-or-later
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#define NETDATA_RRD_INTERNALS
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#include "rrd.h"
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RRDHOST *localhost = NULL;
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size_t rrd_hosts_available = 0;
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netdata_rwlock_t rrd_rwlock = NETDATA_RWLOCK_INITIALIZER;
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time_t rrdset_free_obsolete_time = 3600;
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time_t rrdhost_free_orphan_time = 3600;
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// ----------------------------------------------------------------------------
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// RRDHOST index
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int rrdhost_compare(void* a, void* b) {
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if(((RRDHOST *)a)->hash_machine_guid < ((RRDHOST *)b)->hash_machine_guid) return -1;
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else if(((RRDHOST *)a)->hash_machine_guid > ((RRDHOST *)b)->hash_machine_guid) return 1;
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else return strcmp(((RRDHOST *)a)->machine_guid, ((RRDHOST *)b)->machine_guid);
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}
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avl_tree_lock rrdhost_root_index = {
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.avl_tree = { NULL, rrdhost_compare },
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.rwlock = AVL_LOCK_INITIALIZER
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};
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RRDHOST *rrdhost_find_by_guid(const char *guid, uint32_t hash) {
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debug(D_RRDHOST, "Searching in index for host with guid '%s'", guid);
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RRDHOST tmp;
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strncpyz(tmp.machine_guid, guid, GUID_LEN);
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tmp.hash_machine_guid = (hash)?hash:simple_hash(tmp.machine_guid);
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return (RRDHOST *)avl_search_lock(&(rrdhost_root_index), (avl *) &tmp);
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}
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RRDHOST *rrdhost_find_by_hostname(const char *hostname, uint32_t hash) {
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if(unlikely(!strcmp(hostname, "localhost")))
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return localhost;
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if(unlikely(!hash)) hash = simple_hash(hostname);
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rrd_rdlock();
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RRDHOST *host;
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rrdhost_foreach_read(host) {
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if(unlikely((hash == host->hash_hostname && !strcmp(hostname, host->hostname)))) {
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rrd_unlock();
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return host;
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}
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}
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rrd_unlock();
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return NULL;
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}
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#define rrdhost_index_add(rrdhost) (RRDHOST *)avl_insert_lock(&(rrdhost_root_index), (avl *)(rrdhost))
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#define rrdhost_index_del(rrdhost) (RRDHOST *)avl_remove_lock(&(rrdhost_root_index), (avl *)(rrdhost))
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// ----------------------------------------------------------------------------
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// RRDHOST - internal helpers
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static inline void rrdhost_init_tags(RRDHOST *host, const char *tags) {
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if(host->tags && tags && !strcmp(host->tags, tags))
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return;
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void *old = (void *)host->tags;
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host->tags = (tags && *tags)?strdupz(tags):NULL;
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freez(old);
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}
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static inline void rrdhost_init_hostname(RRDHOST *host, const char *hostname) {
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if(host->hostname && hostname && !strcmp(host->hostname, hostname))
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return;
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void *old = host->hostname;
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host->hostname = strdupz(hostname?hostname:"localhost");
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host->hash_hostname = simple_hash(host->hostname);
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freez(old);
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}
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static inline void rrdhost_init_os(RRDHOST *host, const char *os) {
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if(host->os && os && !strcmp(host->os, os))
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return;
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void *old = (void *)host->os;
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host->os = strdupz(os?os:"unknown");
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freez(old);
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}
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static inline void rrdhost_init_timezone(RRDHOST *host, const char *timezone) {
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if(host->timezone && timezone && !strcmp(host->timezone, timezone))
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return;
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void *old = (void *)host->timezone;
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host->timezone = strdupz((timezone && *timezone)?timezone:"unknown");
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freez(old);
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}
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static inline void rrdhost_init_machine_guid(RRDHOST *host, const char *machine_guid) {
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strncpy(host->machine_guid, machine_guid, GUID_LEN);
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host->machine_guid[GUID_LEN] = '\0';
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host->hash_machine_guid = simple_hash(host->machine_guid);
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}
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// ----------------------------------------------------------------------------
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// RRDHOST - add a host
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RRDHOST *rrdhost_create(const char *hostname,
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const char *registry_hostname,
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const char *guid,
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const char *os,
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const char *timezone,
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const char *tags,
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const char *program_name,
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const char *program_version,
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int update_every,
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long entries,
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RRD_MEMORY_MODE memory_mode,
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unsigned int health_enabled,
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unsigned int rrdpush_enabled,
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char *rrdpush_destination,
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char *rrdpush_api_key,
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char *rrdpush_send_charts_matching,
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struct rrdhost_system_info *system_info,
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int is_localhost
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) {
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debug(D_RRDHOST, "Host '%s': adding with guid '%s'", hostname, guid);
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rrd_check_wrlock();
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RRDHOST *host = callocz(1, sizeof(RRDHOST));
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host->rrd_update_every = (update_every > 0)?update_every:1;
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host->rrd_history_entries = align_entries_to_pagesize(memory_mode, entries);
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host->rrd_memory_mode = memory_mode;
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#ifdef ENABLE_DBENGINE
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host->page_cache_mb = default_rrdeng_page_cache_mb;
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host->disk_space_mb = default_rrdeng_disk_quota_mb;
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#endif
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host->health_enabled = (memory_mode == RRD_MEMORY_MODE_NONE)? 0 : health_enabled;
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host->rrdpush_send_enabled = (rrdpush_enabled && rrdpush_destination && *rrdpush_destination && rrdpush_api_key && *rrdpush_api_key) ? 1 : 0;
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host->rrdpush_send_destination = (host->rrdpush_send_enabled)?strdupz(rrdpush_destination):NULL;
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host->rrdpush_send_api_key = (host->rrdpush_send_enabled)?strdupz(rrdpush_api_key):NULL;
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host->rrdpush_send_charts_matching = simple_pattern_create(rrdpush_send_charts_matching, NULL, SIMPLE_PATTERN_EXACT);
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host->rrdpush_sender_pipe[0] = -1;
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host->rrdpush_sender_pipe[1] = -1;
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host->rrdpush_sender_socket = -1;
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#ifdef ENABLE_HTTPS
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host->ssl.conn = NULL;
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host->ssl.flags = NETDATA_SSL_START;
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host->stream_ssl.conn = NULL;
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host->stream_ssl.flags = NETDATA_SSL_START;
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#endif
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netdata_mutex_init(&host->rrdpush_sender_buffer_mutex);
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netdata_rwlock_init(&host->rrdhost_rwlock);
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rrdhost_init_hostname(host, hostname);
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rrdhost_init_machine_guid(host, guid);
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rrdhost_init_os(host, os);
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rrdhost_init_timezone(host, timezone);
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rrdhost_init_tags(host, tags);
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host->program_name = strdupz((program_name && *program_name)?program_name:"unknown");
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host->program_version = strdupz((program_version && *program_version)?program_version:"unknown");
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host->registry_hostname = strdupz((registry_hostname && *registry_hostname)?registry_hostname:hostname);
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host->system_info = system_info;
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avl_init_lock(&(host->rrdset_root_index), rrdset_compare);
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avl_init_lock(&(host->rrdset_root_index_name), rrdset_compare_name);
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avl_init_lock(&(host->rrdfamily_root_index), rrdfamily_compare);
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avl_init_lock(&(host->rrdvar_root_index), rrdvar_compare);
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if(config_get_boolean(CONFIG_SECTION_GLOBAL, "delete obsolete charts files", 1))
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rrdhost_flag_set(host, RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS);
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if(config_get_boolean(CONFIG_SECTION_GLOBAL, "delete orphan hosts files", 1) && !is_localhost)
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rrdhost_flag_set(host, RRDHOST_FLAG_DELETE_ORPHAN_HOST);
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host->health_default_warn_repeat_every = config_get_duration(CONFIG_SECTION_HEALTH, "default repeat warning", "never");
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host->health_default_crit_repeat_every = config_get_duration(CONFIG_SECTION_HEALTH, "default repeat critical", "never");
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avl_init_lock(&(host->alarms_idx_health_log), alarm_compare_id);
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avl_init_lock(&(host->alarms_idx_name), alarm_compare_name);
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// ------------------------------------------------------------------------
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// initialize health variables
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host->health_log.next_log_id = 1;
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host->health_log.next_alarm_id = 1;
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host->health_log.max = 1000;
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host->health_log.next_log_id =
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host->health_log.next_alarm_id = (uint32_t)now_realtime_sec();
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long n = config_get_number(CONFIG_SECTION_HEALTH, "in memory max health log entries", host->health_log.max);
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if(n < 10) {
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error("Host '%s': health configuration has invalid max log entries %ld. Using default %u", host->hostname, n, host->health_log.max);
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config_set_number(CONFIG_SECTION_HEALTH, "in memory max health log entries", (long)host->health_log.max);
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}
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else
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host->health_log.max = (unsigned int)n;
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netdata_rwlock_init(&host->health_log.alarm_log_rwlock);
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char filename[FILENAME_MAX + 1];
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if(is_localhost) {
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host->cache_dir = strdupz(netdata_configured_cache_dir);
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host->varlib_dir = strdupz(netdata_configured_varlib_dir);
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}
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else {
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// this is not localhost - append our GUID to localhost path
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snprintfz(filename, FILENAME_MAX, "%s/%s", netdata_configured_cache_dir, host->machine_guid);
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host->cache_dir = strdupz(filename);
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if(host->rrd_memory_mode == RRD_MEMORY_MODE_MAP || host->rrd_memory_mode == RRD_MEMORY_MODE_SAVE ||
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host->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
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int r = mkdir(host->cache_dir, 0775);
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if(r != 0 && errno != EEXIST)
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error("Host '%s': cannot create directory '%s'", host->hostname, host->cache_dir);
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}
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snprintfz(filename, FILENAME_MAX, "%s/%s", netdata_configured_varlib_dir, host->machine_guid);
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host->varlib_dir = strdupz(filename);
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if(host->health_enabled) {
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int r = mkdir(host->varlib_dir, 0775);
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if(r != 0 && errno != EEXIST)
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error("Host '%s': cannot create directory '%s'", host->hostname, host->varlib_dir);
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}
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}
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if (host->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
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#ifdef ENABLE_DBENGINE
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char dbenginepath[FILENAME_MAX + 1];
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int ret;
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snprintfz(dbenginepath, FILENAME_MAX, "%s/dbengine", host->cache_dir);
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ret = mkdir(dbenginepath, 0775);
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if(ret != 0 && errno != EEXIST)
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error("Host '%s': cannot create directory '%s'", host->hostname, dbenginepath);
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else
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ret = rrdeng_init(&host->rrdeng_ctx, dbenginepath, host->page_cache_mb, host->disk_space_mb);
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if(ret) {
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error("Host '%s': cannot initialize host with machine guid '%s'. Failed to initialize DB engine at '%s'.",
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host->hostname, host->machine_guid, host->cache_dir);
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rrdhost_free(host);
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host = NULL;
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//rrd_hosts_available++; //TODO: maybe we want this?
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return host;
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}
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#else
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fatal("RRD_MEMORY_MODE_DBENGINE is not supported in this platform.");
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#endif
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}
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if(host->health_enabled) {
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snprintfz(filename, FILENAME_MAX, "%s/health", host->varlib_dir);
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int r = mkdir(filename, 0775);
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if(r != 0 && errno != EEXIST)
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error("Host '%s': cannot create directory '%s'", host->hostname, filename);
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}
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snprintfz(filename, FILENAME_MAX, "%s/health/health-log.db", host->varlib_dir);
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host->health_log_filename = strdupz(filename);
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snprintfz(filename, FILENAME_MAX, "%s/alarm-notify.sh", netdata_configured_primary_plugins_dir);
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host->health_default_exec = strdupz(config_get(CONFIG_SECTION_HEALTH, "script to execute on alarm", filename));
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host->health_default_recipient = strdupz("root");
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// ------------------------------------------------------------------------
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// load health configuration
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if(host->health_enabled) {
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rrdhost_wrlock(host);
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health_readdir(host, health_user_config_dir(), health_stock_config_dir(), NULL);
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rrdhost_unlock(host);
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health_alarm_log_load(host);
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health_alarm_log_open(host);
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}
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// ------------------------------------------------------------------------
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// link it and add it to the index
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if(is_localhost) {
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host->next = localhost;
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localhost = host;
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}
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else {
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if(localhost) {
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host->next = localhost->next;
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localhost->next = host;
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}
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else localhost = host;
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}
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RRDHOST *t = rrdhost_index_add(host);
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if(t != host) {
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error("Host '%s': cannot add host with machine guid '%s' to index. It already exists as host '%s' with machine guid '%s'.", host->hostname, host->machine_guid, t->hostname, t->machine_guid);
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rrdhost_free(host);
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host = NULL;
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}
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else {
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info("Host '%s' (at registry as '%s') with guid '%s' initialized"
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", os '%s'"
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", timezone '%s'"
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", tags '%s'"
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", program_name '%s'"
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", program_version '%s'"
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", update every %d"
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", memory mode %s"
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", history entries %ld"
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", streaming %s"
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" (to '%s' with api key '%s')"
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", health %s"
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", cache_dir '%s'"
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", varlib_dir '%s'"
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", health_log '%s'"
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", alarms default handler '%s'"
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", alarms default recipient '%s'"
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, host->hostname
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, host->registry_hostname
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, host->machine_guid
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, host->os
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, host->timezone
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, (host->tags)?host->tags:""
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, host->program_name
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, host->program_version
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, host->rrd_update_every
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, rrd_memory_mode_name(host->rrd_memory_mode)
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, host->rrd_history_entries
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, host->rrdpush_send_enabled?"enabled":"disabled"
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, host->rrdpush_send_destination?host->rrdpush_send_destination:""
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, host->rrdpush_send_api_key?host->rrdpush_send_api_key:""
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, host->health_enabled?"enabled":"disabled"
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, host->cache_dir
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, host->varlib_dir
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, host->health_log_filename
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, host->health_default_exec
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, host->health_default_recipient
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);
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}
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rrd_hosts_available++;
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return host;
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}
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RRDHOST *rrdhost_find_or_create(
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const char *hostname
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, const char *registry_hostname
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, const char *guid
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, const char *os
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, const char *timezone
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, const char *tags
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, const char *program_name
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, const char *program_version
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, int update_every
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, long history
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, RRD_MEMORY_MODE mode
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, unsigned int health_enabled
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, unsigned int rrdpush_enabled
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, char *rrdpush_destination
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, char *rrdpush_api_key
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, char *rrdpush_send_charts_matching
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, struct rrdhost_system_info *system_info
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) {
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debug(D_RRDHOST, "Searching for host '%s' with guid '%s'", hostname, guid);
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rrd_wrlock();
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RRDHOST *host = rrdhost_find_by_guid(guid, 0);
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if(!host) {
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host = rrdhost_create(
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hostname
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, registry_hostname
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, guid
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, os
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, timezone
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, tags
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, program_name
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, program_version
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, update_every
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, history
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, mode
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, health_enabled
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, rrdpush_enabled
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, rrdpush_destination
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, rrdpush_api_key
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, rrdpush_send_charts_matching
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, system_info
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, 0
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);
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}
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else {
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host->health_enabled = health_enabled;
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if(strcmp(host->hostname, hostname) != 0) {
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info("Host '%s' has been renamed to '%s'. If this is not intentional it may mean multiple hosts are using the same machine_guid.", host->hostname, hostname);
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char *t = host->hostname;
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host->hostname = strdupz(hostname);
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host->hash_hostname = simple_hash(host->hostname);
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freez(t);
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}
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if(strcmp(host->program_name, program_name) != 0) {
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info("Host '%s' switched program name from '%s' to '%s'", host->hostname, host->program_name, program_name);
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char *t = host->program_name;
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host->program_name = strdupz(program_name);
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freez(t);
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}
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if(strcmp(host->program_version, program_version) != 0) {
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info("Host '%s' switched program version from '%s' to '%s'", host->hostname, host->program_version, program_version);
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char *t = host->program_version;
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host->program_version = strdupz(program_version);
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freez(t);
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}
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if(host->rrd_update_every != update_every)
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error("Host '%s' has an update frequency of %d seconds, but the wanted one is %d seconds. Restart netdata here to apply the new settings.", host->hostname, host->rrd_update_every, update_every);
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if(host->rrd_history_entries < history)
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error("Host '%s' has history of %ld entries, but the wanted one is %ld entries. Restart netdata here to apply the new settings.", host->hostname, host->rrd_history_entries, history);
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if(host->rrd_memory_mode != mode)
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error("Host '%s' has memory mode '%s', but the wanted one is '%s'. Restart netdata here to apply the new settings.", host->hostname, rrd_memory_mode_name(host->rrd_memory_mode), rrd_memory_mode_name(mode));
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// update host tags
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rrdhost_init_tags(host, tags);
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}
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rrdhost_cleanup_orphan_hosts_nolock(host);
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rrd_unlock();
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return host;
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}
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inline int rrdhost_should_be_removed(RRDHOST *host, RRDHOST *protected, time_t now) {
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if(host != protected
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&& host != localhost
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&& rrdhost_flag_check(host, RRDHOST_FLAG_ORPHAN)
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&& !host->connected_senders
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&& host->senders_disconnected_time
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&& host->senders_disconnected_time + rrdhost_free_orphan_time < now)
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|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void rrdhost_cleanup_orphan_hosts_nolock(RRDHOST *protected) {
|
|
time_t now = now_realtime_sec();
|
|
|
|
RRDHOST *host;
|
|
|
|
restart_after_removal:
|
|
rrdhost_foreach_write(host) {
|
|
if(rrdhost_should_be_removed(host, protected, now)) {
|
|
info("Host '%s' with machine guid '%s' is obsolete - cleaning up.", host->hostname, host->machine_guid);
|
|
|
|
if(rrdhost_flag_check(host, RRDHOST_FLAG_DELETE_ORPHAN_HOST))
|
|
rrdhost_delete_charts(host);
|
|
else
|
|
rrdhost_save_charts(host);
|
|
|
|
rrdhost_free(host);
|
|
goto restart_after_removal;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST global / startup initialization
|
|
|
|
int rrd_init(char *hostname, struct rrdhost_system_info *system_info) {
|
|
rrdset_free_obsolete_time = config_get_number(CONFIG_SECTION_GLOBAL, "cleanup obsolete charts after seconds", rrdset_free_obsolete_time);
|
|
gap_when_lost_iterations_above = (int)config_get_number(CONFIG_SECTION_GLOBAL, "gap when lost iterations above", gap_when_lost_iterations_above);
|
|
if (gap_when_lost_iterations_above < 1)
|
|
gap_when_lost_iterations_above = 1;
|
|
|
|
health_init();
|
|
registry_init();
|
|
rrdpush_init();
|
|
|
|
debug(D_RRDHOST, "Initializing localhost with hostname '%s'", hostname);
|
|
rrd_wrlock();
|
|
localhost = rrdhost_create(
|
|
hostname
|
|
, registry_get_this_machine_hostname()
|
|
, registry_get_this_machine_guid()
|
|
, os_type
|
|
, netdata_configured_timezone
|
|
, config_get(CONFIG_SECTION_BACKEND, "host tags", "")
|
|
, program_name
|
|
, program_version
|
|
, default_rrd_update_every
|
|
, default_rrd_history_entries
|
|
, default_rrd_memory_mode
|
|
, default_health_enabled
|
|
, default_rrdpush_enabled
|
|
, default_rrdpush_destination
|
|
, default_rrdpush_api_key
|
|
, default_rrdpush_send_charts_matching
|
|
, system_info
|
|
, 1
|
|
);
|
|
rrd_unlock();
|
|
web_client_api_v1_management_init();
|
|
return localhost==NULL;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - lock validations
|
|
// there are only used when NETDATA_INTERNAL_CHECKS is set
|
|
|
|
void __rrdhost_check_rdlock(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
|
|
debug(D_RRDHOST, "Checking read lock on host '%s'", host->hostname);
|
|
|
|
int ret = netdata_rwlock_trywrlock(&host->rrdhost_rwlock);
|
|
if(ret == 0)
|
|
fatal("RRDHOST '%s' should be read-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
|
|
}
|
|
|
|
void __rrdhost_check_wrlock(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
|
|
debug(D_RRDHOST, "Checking write lock on host '%s'", host->hostname);
|
|
|
|
int ret = netdata_rwlock_tryrdlock(&host->rrdhost_rwlock);
|
|
if(ret == 0)
|
|
fatal("RRDHOST '%s' should be write-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
|
|
}
|
|
|
|
void __rrd_check_rdlock(const char *file, const char *function, const unsigned long line) {
|
|
debug(D_RRDHOST, "Checking read lock on all RRDs");
|
|
|
|
int ret = netdata_rwlock_trywrlock(&rrd_rwlock);
|
|
if(ret == 0)
|
|
fatal("RRDs should be read-locked, but it are not, at function %s() at line %lu of file '%s'", function, line, file);
|
|
}
|
|
|
|
void __rrd_check_wrlock(const char *file, const char *function, const unsigned long line) {
|
|
debug(D_RRDHOST, "Checking write lock on all RRDs");
|
|
|
|
int ret = netdata_rwlock_tryrdlock(&rrd_rwlock);
|
|
if(ret == 0)
|
|
fatal("RRDs should be write-locked, but it are not, at function %s() at line %lu of file '%s'", function, line, file);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - free
|
|
|
|
void rrdhost_system_info_free(struct rrdhost_system_info *system_info) {
|
|
info("SYSTEM_INFO: free %p", system_info);
|
|
|
|
if(likely(system_info)) {
|
|
freez(system_info->host_os_name);
|
|
freez(system_info->host_os_id);
|
|
freez(system_info->host_os_id_like);
|
|
freez(system_info->host_os_version);
|
|
freez(system_info->host_os_version_id);
|
|
freez(system_info->host_os_detection);
|
|
freez(system_info->container_os_name);
|
|
freez(system_info->container_os_id);
|
|
freez(system_info->container_os_id_like);
|
|
freez(system_info->container_os_version);
|
|
freez(system_info->container_os_version_id);
|
|
freez(system_info->container_os_detection);
|
|
freez(system_info->kernel_name);
|
|
freez(system_info->kernel_version);
|
|
freez(system_info->architecture);
|
|
freez(system_info->virtualization);
|
|
freez(system_info->virt_detection);
|
|
freez(system_info->container);
|
|
freez(system_info->container_detection);
|
|
freez(system_info);
|
|
}
|
|
}
|
|
|
|
void rrdhost_free(RRDHOST *host) {
|
|
if(!host) return;
|
|
|
|
info("Freeing all memory for host '%s'...", host->hostname);
|
|
|
|
rrd_check_wrlock(); // make sure the RRDs are write locked
|
|
|
|
// stop a possibly running thread
|
|
rrdpush_sender_thread_stop(host);
|
|
|
|
rrdhost_wrlock(host); // lock this RRDHOST
|
|
|
|
// ------------------------------------------------------------------------
|
|
// release its children resources
|
|
|
|
while(host->rrdset_root)
|
|
rrdset_free(host->rrdset_root);
|
|
|
|
freez(host->exporting_flags);
|
|
|
|
while(host->alarms)
|
|
rrdcalc_unlink_and_free(host, host->alarms);
|
|
|
|
RRDCALC *rc,*nc;
|
|
for(rc = host->alarms_with_foreach; rc ; rc = nc) {
|
|
nc = rc->next;
|
|
rrdcalc_free(rc);
|
|
}
|
|
host->alarms_with_foreach = NULL;
|
|
|
|
while(host->templates)
|
|
rrdcalctemplate_unlink_and_free(host, host->templates);
|
|
|
|
RRDCALCTEMPLATE *rt,*next;
|
|
for(rt = host->alarms_template_with_foreach; rt ; rt = next) {
|
|
next = rt->next;
|
|
rrdcalctemplate_free(rt);
|
|
}
|
|
host->alarms_template_with_foreach = NULL;
|
|
|
|
debug(D_RRD_CALLS, "RRDHOST: Cleaning up remaining host variables for host '%s'", host->hostname);
|
|
rrdvar_free_remaining_variables(host, &host->rrdvar_root_index);
|
|
|
|
health_alarm_log_free(host);
|
|
|
|
if (host->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
|
|
#ifdef ENABLE_DBENGINE
|
|
rrdeng_exit(host->rrdeng_ctx);
|
|
#endif
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
// remove it from the indexes
|
|
|
|
if(rrdhost_index_del(host) != host)
|
|
error("RRDHOST '%s' removed from index, deleted the wrong entry.", host->hostname);
|
|
|
|
|
|
// ------------------------------------------------------------------------
|
|
// unlink it from the host
|
|
|
|
if(host == localhost) {
|
|
localhost = host->next;
|
|
}
|
|
else {
|
|
// find the previous one
|
|
RRDHOST *h;
|
|
for(h = localhost; h && h->next != host ; h = h->next) ;
|
|
|
|
// bypass it
|
|
if(h) h->next = host->next;
|
|
else error("Request to free RRDHOST '%s': cannot find it", host->hostname);
|
|
}
|
|
|
|
// ------------------------------------------------------------------------
|
|
// free it
|
|
|
|
freez((void *)host->tags);
|
|
freez((void *)host->os);
|
|
freez((void *)host->timezone);
|
|
freez(host->program_version);
|
|
freez(host->program_name);
|
|
rrdhost_system_info_free(host->system_info);
|
|
freez(host->cache_dir);
|
|
freez(host->varlib_dir);
|
|
freez(host->rrdpush_send_api_key);
|
|
freez(host->rrdpush_send_destination);
|
|
freez(host->health_default_exec);
|
|
freez(host->health_default_recipient);
|
|
freez(host->health_log_filename);
|
|
freez(host->hostname);
|
|
freez(host->registry_hostname);
|
|
simple_pattern_free(host->rrdpush_send_charts_matching);
|
|
rrdhost_unlock(host);
|
|
netdata_rwlock_destroy(&host->health_log.alarm_log_rwlock);
|
|
netdata_rwlock_destroy(&host->rrdhost_rwlock);
|
|
freez(host);
|
|
|
|
rrd_hosts_available--;
|
|
}
|
|
|
|
void rrdhost_free_all(void) {
|
|
rrd_wrlock();
|
|
while(localhost) rrdhost_free(localhost);
|
|
rrd_unlock();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - save host files
|
|
|
|
void rrdhost_save_charts(RRDHOST *host) {
|
|
if(!host) return;
|
|
|
|
info("Saving/Closing database of host '%s'...", host->hostname);
|
|
|
|
RRDSET *st;
|
|
|
|
// we get a write lock
|
|
// to ensure only one thread is saving the database
|
|
rrdhost_wrlock(host);
|
|
|
|
rrdset_foreach_write(st, host) {
|
|
rrdset_rdlock(st);
|
|
rrdset_save(st);
|
|
rrdset_unlock(st);
|
|
}
|
|
|
|
rrdhost_unlock(host);
|
|
}
|
|
|
|
static int is_valid_label_value(char *value) {
|
|
while(*value) {
|
|
if(*value == '"' || *value == '\'' || *value == '*' || *value == '!') {
|
|
return 0;
|
|
}
|
|
|
|
value++;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int is_valid_label_key(char *key) {
|
|
//Prometheus exporter
|
|
if(!strcmp(key, "chart") || !strcmp(key, "family") || !strcmp(key, "dimension"))
|
|
return 0;
|
|
|
|
//Netdata and Prometheus internal
|
|
if (*key == '_')
|
|
return 0;
|
|
|
|
while(*key) {
|
|
if(!(isdigit(*key) || isalpha(*key) || *key == '.' || *key == '_' || *key == '-'))
|
|
return 0;
|
|
|
|
key++;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
char *translate_label_source(LABEL_SOURCE l) {
|
|
switch (l) {
|
|
case LABEL_SOURCE_AUTO:
|
|
return "AUTO";
|
|
case LABEL_SOURCE_NETDATA_CONF:
|
|
return "NETDATA.CONF";
|
|
case LABEL_SOURCE_DOCKER :
|
|
return "DOCKER";
|
|
case LABEL_SOURCE_ENVIRONMENT :
|
|
return "ENVIRONMENT";
|
|
case LABEL_SOURCE_KUBERNETES :
|
|
return "KUBERNETES";
|
|
default:
|
|
return "Invalid label source";
|
|
}
|
|
}
|
|
|
|
struct label *load_auto_labels()
|
|
{
|
|
struct label *label_list = NULL;
|
|
|
|
if (localhost->system_info->host_os_name)
|
|
label_list =
|
|
add_label_to_list(label_list, "_os_name", localhost->system_info->host_os_name, LABEL_SOURCE_AUTO);
|
|
|
|
if (localhost->system_info->host_os_version)
|
|
label_list =
|
|
add_label_to_list(label_list, "_os_version", localhost->system_info->host_os_version, LABEL_SOURCE_AUTO);
|
|
|
|
if (localhost->system_info->kernel_version)
|
|
label_list =
|
|
add_label_to_list(label_list, "_kernel_version", localhost->system_info->kernel_version, LABEL_SOURCE_AUTO);
|
|
|
|
if (localhost->system_info->architecture)
|
|
label_list =
|
|
add_label_to_list(label_list, "_architecture", localhost->system_info->architecture, LABEL_SOURCE_AUTO);
|
|
|
|
if (localhost->system_info->virtualization)
|
|
label_list =
|
|
add_label_to_list(label_list, "_virtualization", localhost->system_info->virtualization, LABEL_SOURCE_AUTO);
|
|
|
|
if (localhost->system_info->container)
|
|
label_list =
|
|
add_label_to_list(label_list, "_container", localhost->system_info->container, LABEL_SOURCE_AUTO);
|
|
|
|
if (localhost->system_info->container_detection)
|
|
label_list =
|
|
add_label_to_list(label_list, "_container_detection", localhost->system_info->container_detection, LABEL_SOURCE_AUTO);
|
|
|
|
if (localhost->system_info->virt_detection)
|
|
label_list =
|
|
add_label_to_list(label_list, "_virt_detection", localhost->system_info->virt_detection, LABEL_SOURCE_AUTO);
|
|
|
|
label_list = add_label_to_list(
|
|
label_list, "_is_master", (localhost->next || configured_as_master()) ? "true" : "false", LABEL_SOURCE_AUTO);
|
|
|
|
if (localhost->rrdpush_send_destination)
|
|
label_list =
|
|
add_label_to_list(label_list, "_streams_to", localhost->rrdpush_send_destination, LABEL_SOURCE_AUTO);
|
|
|
|
return label_list;
|
|
}
|
|
|
|
static inline int is_valid_label_config_option(char *name, char *value) {
|
|
return (is_valid_label_key(name) && is_valid_label_value(value) && strcmp(name, "from environment") && strcmp(name, "from kubernetes pods") );
|
|
}
|
|
|
|
struct label *load_config_labels()
|
|
{
|
|
int status = config_load(NULL, 1, CONFIG_SECTION_HOST_LABEL);
|
|
if(!status) {
|
|
char *filename = CONFIG_DIR "/" CONFIG_FILENAME;
|
|
error("LABEL: Cannot reload the configuration file '%s', using labels in memory", filename);
|
|
}
|
|
|
|
struct label *l = NULL;
|
|
struct section *co = appconfig_get_section(&netdata_config, CONFIG_SECTION_HOST_LABEL);
|
|
if(co) {
|
|
config_section_wrlock(co);
|
|
struct config_option *cv;
|
|
for(cv = co->values; cv ; cv = cv->next) {
|
|
if( is_valid_label_config_option(cv->name, cv->value)) {
|
|
l = add_label_to_list(l, cv->name, cv->value, LABEL_SOURCE_NETDATA_CONF);
|
|
cv->flags |= CONFIG_VALUE_USED;
|
|
} else {
|
|
error("LABELS: It was not possible to create the label '%s' because it contains invalid character(s) or values."
|
|
, cv->name);
|
|
}
|
|
}
|
|
config_section_unlock(co);
|
|
}
|
|
|
|
return l;
|
|
}
|
|
|
|
struct label *load_kubernetes_labels()
|
|
{
|
|
struct label *l=NULL;
|
|
char *label_script = mallocz(sizeof(char) * (strlen(netdata_configured_primary_plugins_dir) + strlen("get-kubernetes-labels.sh") + 2));
|
|
sprintf(label_script, "%s/%s", netdata_configured_primary_plugins_dir, "get-kubernetes-labels.sh");
|
|
if (unlikely(access(label_script, R_OK) != 0)) {
|
|
error("Kubernetes pod label fetching script %s not found.",label_script);
|
|
freez(label_script);
|
|
} else {
|
|
pid_t command_pid;
|
|
|
|
debug(D_RRDHOST, "Attempting to fetch external labels via %s", label_script);
|
|
|
|
FILE *fp = mypopen(label_script, &command_pid);
|
|
if(fp) {
|
|
int MAX_LINE_SIZE=300;
|
|
char buffer[MAX_LINE_SIZE + 1];
|
|
while (fgets(buffer, MAX_LINE_SIZE, fp) != NULL) {
|
|
char *name=buffer;
|
|
char *value=buffer;
|
|
while (*value && *value != ':') value++;
|
|
if (*value == ':') {
|
|
*value = '\0';
|
|
value++;
|
|
}
|
|
char *eos=value;
|
|
while (*eos && *eos != '\n') eos++;
|
|
if (*eos == '\n') *eos = '\0';
|
|
if (strlen(value)>0) {
|
|
if (is_valid_label_key(name)){
|
|
l = add_label_to_list(l, name, value, LABEL_SOURCE_KUBERNETES);
|
|
} else {
|
|
info("Ignoring invalid label name '%s'", name);
|
|
}
|
|
} else {
|
|
error("%s outputted unexpected result: '%s'", label_script, name);
|
|
}
|
|
};
|
|
// Non-zero exit code means that all the script output is error messages. We've shown already any message that didn't include a ':'
|
|
// Here we'll inform with an ERROR that the script failed, show whatever (if anything) was added to the list of labels, free the memory and set the return to null
|
|
int retcode=mypclose(fp, command_pid);
|
|
if (retcode) {
|
|
error("%s exited abnormally. No kubernetes labels will be added to the host.", label_script);
|
|
struct label *ll=l;
|
|
while (ll != NULL) {
|
|
info("Ignoring Label [source id=%s]: \"%s\" -> \"%s\"\n", translate_label_source(ll->label_source), ll->key, ll->value);
|
|
ll = ll->next;
|
|
freez(l);
|
|
l=ll;
|
|
}
|
|
}
|
|
}
|
|
freez(label_script);
|
|
}
|
|
|
|
return l;
|
|
}
|
|
|
|
struct label *create_label(char *key, char *value, LABEL_SOURCE label_source)
|
|
{
|
|
size_t key_len = strlen(key), value_len = strlen(value);
|
|
size_t n = sizeof(struct label) + key_len + 1 + value_len + 1;
|
|
struct label *result = callocz(1,n);
|
|
if (result != NULL) {
|
|
char *c = (char *)result;
|
|
c += sizeof(struct label);
|
|
strcpy(c, key);
|
|
result->key = c;
|
|
c += key_len + 1;
|
|
strcpy(c, value);
|
|
result->value = c;
|
|
result->label_source = label_source;
|
|
result->key_hash = simple_hash(result->key);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void free_host_labels(struct label *labels)
|
|
{
|
|
while (labels != NULL)
|
|
{
|
|
struct label *current = labels;
|
|
labels = labels->next;
|
|
freez(current);
|
|
}
|
|
}
|
|
|
|
void replace_label_list(RRDHOST *host, struct label *new_labels)
|
|
{
|
|
netdata_rwlock_wrlock(&host->labels_rwlock);
|
|
struct label *old_labels = host->labels;
|
|
host->labels = new_labels;
|
|
netdata_rwlock_unlock(&host->labels_rwlock);
|
|
|
|
free_host_labels(old_labels);
|
|
}
|
|
|
|
struct label *add_label_to_list(struct label *l, char *key, char *value, LABEL_SOURCE label_source)
|
|
{
|
|
struct label *lab = create_label(key, value, label_source);
|
|
lab->next = l;
|
|
return lab;
|
|
}
|
|
|
|
int label_list_contains(struct label *head, struct label *check)
|
|
{
|
|
while (head != NULL)
|
|
{
|
|
if (head->key_hash == check->key_hash && !strcmp(head->key, check->key))
|
|
return 1;
|
|
head = head->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Create a list with entries from both lists.
|
|
If any entry in the low priority list is masked by an entry in the high priorty list then delete it.
|
|
*/
|
|
struct label *merge_label_lists(struct label *lo_pri, struct label *hi_pri)
|
|
{
|
|
struct label *result = hi_pri;
|
|
while (lo_pri != NULL)
|
|
{
|
|
struct label *current = lo_pri;
|
|
lo_pri = lo_pri->next;
|
|
if (!label_list_contains(result, current)) {
|
|
current->next = result;
|
|
result = current;
|
|
}
|
|
else
|
|
freez(current);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void reload_host_labels()
|
|
{
|
|
struct label *from_auto = load_auto_labels();
|
|
struct label *from_k8s = load_kubernetes_labels();
|
|
struct label *from_config = load_config_labels();
|
|
|
|
struct label *new_labels = merge_label_lists(from_auto, from_k8s);
|
|
new_labels = merge_label_lists(new_labels, from_config);
|
|
|
|
replace_label_list(localhost, new_labels);
|
|
|
|
health_label_log_save(localhost);
|
|
|
|
if(localhost->rrdpush_send_enabled && localhost->rrdpush_sender_buffer){
|
|
localhost->labels_flag |= LABEL_FLAG_UPDATE_STREAM;
|
|
rrdpush_send_labels(localhost);
|
|
}
|
|
|
|
health_reload();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - delete host files
|
|
|
|
void rrdhost_delete_charts(RRDHOST *host) {
|
|
if(!host) return;
|
|
|
|
info("Deleting database of host '%s'...", host->hostname);
|
|
|
|
RRDSET *st;
|
|
|
|
// we get a write lock
|
|
// to ensure only one thread is saving the database
|
|
rrdhost_wrlock(host);
|
|
|
|
rrdset_foreach_write(st, host) {
|
|
rrdset_rdlock(st);
|
|
rrdset_delete(st);
|
|
rrdset_unlock(st);
|
|
}
|
|
|
|
recursively_delete_dir(host->cache_dir, "left over host");
|
|
|
|
rrdhost_unlock(host);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - cleanup host files
|
|
|
|
void rrdhost_cleanup_charts(RRDHOST *host) {
|
|
if(!host) return;
|
|
|
|
info("Cleaning up database of host '%s'...", host->hostname);
|
|
|
|
RRDSET *st;
|
|
uint32_t rrdhost_delete_obsolete_charts = rrdhost_flag_check(host, RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS);
|
|
|
|
// we get a write lock
|
|
// to ensure only one thread is saving the database
|
|
rrdhost_wrlock(host);
|
|
|
|
rrdset_foreach_write(st, host) {
|
|
rrdset_rdlock(st);
|
|
|
|
if(rrdhost_delete_obsolete_charts && rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE))
|
|
rrdset_delete(st);
|
|
else if(rrdhost_delete_obsolete_charts && rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE_DIMENSIONS))
|
|
rrdset_delete_obsolete_dimensions(st);
|
|
else
|
|
rrdset_save(st);
|
|
|
|
rrdset_unlock(st);
|
|
}
|
|
|
|
rrdhost_unlock(host);
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - save all hosts to disk
|
|
|
|
void rrdhost_save_all(void) {
|
|
info("Saving database [%zu hosts(s)]...", rrd_hosts_available);
|
|
|
|
rrd_rdlock();
|
|
|
|
RRDHOST *host;
|
|
rrdhost_foreach_read(host)
|
|
rrdhost_save_charts(host);
|
|
|
|
rrd_unlock();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - save or delete all hosts from disk
|
|
|
|
void rrdhost_cleanup_all(void) {
|
|
info("Cleaning up database [%zu hosts(s)]...", rrd_hosts_available);
|
|
|
|
rrd_rdlock();
|
|
|
|
RRDHOST *host;
|
|
rrdhost_foreach_read(host) {
|
|
if(host != localhost && rrdhost_flag_check(host, RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS) && !host->connected_senders)
|
|
rrdhost_delete_charts(host);
|
|
else
|
|
rrdhost_cleanup_charts(host);
|
|
}
|
|
|
|
rrd_unlock();
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - save or delete all the host charts from disk
|
|
|
|
void rrdhost_cleanup_obsolete_charts(RRDHOST *host) {
|
|
time_t now = now_realtime_sec();
|
|
|
|
RRDSET *st;
|
|
|
|
uint32_t rrdhost_delete_obsolete_charts = rrdhost_flag_check(host, RRDHOST_FLAG_DELETE_OBSOLETE_CHARTS);
|
|
|
|
restart_after_removal:
|
|
rrdset_foreach_write(st, host) {
|
|
if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE)
|
|
&& st->last_accessed_time + rrdset_free_obsolete_time < now
|
|
&& st->last_updated.tv_sec + rrdset_free_obsolete_time < now
|
|
&& st->last_collected_time.tv_sec + rrdset_free_obsolete_time < now
|
|
)) {
|
|
|
|
rrdset_rdlock(st);
|
|
|
|
if(rrdhost_delete_obsolete_charts)
|
|
rrdset_delete(st);
|
|
else
|
|
rrdset_save(st);
|
|
|
|
rrdset_unlock(st);
|
|
|
|
rrdset_free(st);
|
|
goto restart_after_removal;
|
|
}
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// RRDHOST - set system info from environment variables
|
|
|
|
int rrdhost_set_system_info_variable(struct rrdhost_system_info *system_info, char *name, char *value) {
|
|
int res = 0;
|
|
|
|
if(!strcmp(name, "NETDATA_CONTAINER_OS_NAME")){
|
|
freez(system_info->container_os_name);
|
|
system_info->container_os_name = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_CONTAINER_OS_ID")){
|
|
freez(system_info->container_os_id);
|
|
system_info->container_os_id = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_CONTAINER_OS_ID_LIKE")){
|
|
freez(system_info->container_os_id_like);
|
|
system_info->container_os_id_like = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_CONTAINER_OS_VERSION")){
|
|
freez(system_info->container_os_version);
|
|
system_info->container_os_version = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_CONTAINER_OS_VERSION_ID")){
|
|
freez(system_info->container_os_version_id);
|
|
system_info->container_os_version_id = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_CONTAINER_OS_DETECTION")){
|
|
freez(system_info->host_os_detection);
|
|
system_info->host_os_detection = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_HOST_OS_NAME")){
|
|
freez(system_info->host_os_name);
|
|
system_info->host_os_name = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_HOST_OS_ID")){
|
|
freez(system_info->host_os_id);
|
|
system_info->host_os_id = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_HOST_OS_ID_LIKE")){
|
|
freez(system_info->host_os_id_like);
|
|
system_info->host_os_id_like = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_HOST_OS_VERSION")){
|
|
freez(system_info->host_os_version);
|
|
system_info->host_os_version = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_HOST_OS_VERSION_ID")){
|
|
freez(system_info->host_os_version_id);
|
|
system_info->host_os_version_id = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_HOST_OS_DETECTION")){
|
|
freez(system_info->host_os_detection);
|
|
system_info->host_os_detection = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_SYSTEM_KERNEL_NAME")){
|
|
freez(system_info->kernel_name);
|
|
system_info->kernel_name = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_SYSTEM_KERNEL_VERSION")){
|
|
freez(system_info->kernel_version);
|
|
system_info->kernel_version = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_SYSTEM_ARCHITECTURE")){
|
|
freez(system_info->architecture);
|
|
system_info->architecture = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_SYSTEM_VIRTUALIZATION")){
|
|
freez(system_info->virtualization);
|
|
system_info->virtualization = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_SYSTEM_VIRT_DETECTION")){
|
|
freez(system_info->virt_detection);
|
|
system_info->virt_detection = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_SYSTEM_CONTAINER")){
|
|
freez(system_info->container);
|
|
system_info->container = strdupz(value);
|
|
}
|
|
else if(!strcmp(name, "NETDATA_SYSTEM_CONTAINER_DETECTION")){
|
|
freez(system_info->container_detection);
|
|
system_info->container_detection = strdupz(value);
|
|
}
|
|
else {
|
|
res = 1;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* Alarm Compare ID
|
|
*
|
|
* Callback function used with the binary trees to compare the id of RRDCALC
|
|
*
|
|
* @param a a pointer to the RRDCAL item to insert,compare or update the binary tree
|
|
* @param b the pointer to the binary tree.
|
|
*
|
|
* @return It returns 0 case the values are equal, 1 case a is bigger than b and -1 case a is smaller than b.
|
|
*/
|
|
int alarm_compare_id(void *a, void *b) {
|
|
register uint32_t hash1 = ((RRDCALC *)a)->id;
|
|
register uint32_t hash2 = ((RRDCALC *)b)->id;
|
|
|
|
if(hash1 < hash2) return -1;
|
|
else if(hash1 > hash2) return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Alarm Compare NAME
|
|
*
|
|
* Callback function used with the binary trees to compare the name of RRDCALC
|
|
*
|
|
* @param a a pointer to the RRDCAL item to insert,compare or update the binary tree
|
|
* @param b the pointer to the binary tree.
|
|
*
|
|
* @return It returns 0 case the values are equal, 1 case a is bigger than b and -1 case a is smaller than b.
|
|
*/
|
|
int alarm_compare_name(void *a, void *b) {
|
|
RRDCALC *in1 = (RRDCALC *)a;
|
|
RRDCALC *in2 = (RRDCALC *)b;
|
|
|
|
if(in1->hash < in2->hash) return -1;
|
|
else if(in1->hash > in2->hash) return 1;
|
|
|
|
return strcmp(in1->name,in2->name);
|
|
}
|