diff options
Diffstat (limited to 'collectors/cgroups.plugin/cgroup-discovery.c')
| -rw-r--r-- | collectors/cgroups.plugin/cgroup-discovery.c | 1245 |
1 files changed, 0 insertions, 1245 deletions
diff --git a/collectors/cgroups.plugin/cgroup-discovery.c b/collectors/cgroups.plugin/cgroup-discovery.c deleted file mode 100644 index ede35ed8..00000000 --- a/collectors/cgroups.plugin/cgroup-discovery.c +++ /dev/null @@ -1,1245 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#include "cgroup-internals.h" - -// discovery cgroup thread worker jobs -#define WORKER_DISCOVERY_INIT 0 -#define WORKER_DISCOVERY_FIND 1 -#define WORKER_DISCOVERY_PROCESS 2 -#define WORKER_DISCOVERY_PROCESS_RENAME 3 -#define WORKER_DISCOVERY_PROCESS_NETWORK 4 -#define WORKER_DISCOVERY_PROCESS_FIRST_TIME 5 -#define WORKER_DISCOVERY_UPDATE 6 -#define WORKER_DISCOVERY_CLEANUP 7 -#define WORKER_DISCOVERY_COPY 8 -#define WORKER_DISCOVERY_SHARE 9 -#define WORKER_DISCOVERY_LOCK 10 - -#if WORKER_UTILIZATION_MAX_JOB_TYPES < 11 -#error WORKER_UTILIZATION_MAX_JOB_TYPES has to be at least 11 -#endif - -struct cgroup *discovered_cgroup_root = NULL; - -char cgroup_chart_id_prefix[] = "cgroup_"; -char services_chart_id_prefix[] = "systemd_"; -char *cgroups_rename_script = NULL; - - -// ---------------------------------------------------------------------------- - -static inline void free_pressure(struct pressure *res) { - if (res->some.share_time.st) rrdset_is_obsolete___safe_from_collector_thread(res->some.share_time.st); - if (res->some.total_time.st) rrdset_is_obsolete___safe_from_collector_thread(res->some.total_time.st); - if (res->full.share_time.st) rrdset_is_obsolete___safe_from_collector_thread(res->full.share_time.st); - if (res->full.total_time.st) rrdset_is_obsolete___safe_from_collector_thread(res->full.total_time.st); - freez(res->filename); -} - -static inline void cgroup_free_network_interfaces(struct cgroup *cg) { - while(cg->interfaces) { - struct cgroup_network_interface *i = cg->interfaces; - cg->interfaces = i->next; - - // delete the registration of proc_net_dev rename - netdev_rename_device_del(i->host_device); - - freez((void *)i->host_device); - freez((void *)i->container_device); - freez((void *)i); - } -} - -static inline void cgroup_free(struct cgroup *cg) { - netdata_log_debug(D_CGROUP, "Removing cgroup '%s' with chart id '%s' (was %s and %s)", cg->id, cg->chart_id, (cg->enabled)?"enabled":"disabled", (cg->available)?"available":"not available"); - - cgroup_netdev_delete(cg); - - if(cg->st_cpu) rrdset_is_obsolete___safe_from_collector_thread(cg->st_cpu); - if(cg->st_cpu_limit) rrdset_is_obsolete___safe_from_collector_thread(cg->st_cpu_limit); - if(cg->st_cpu_per_core) rrdset_is_obsolete___safe_from_collector_thread(cg->st_cpu_per_core); - if(cg->st_cpu_nr_throttled) rrdset_is_obsolete___safe_from_collector_thread(cg->st_cpu_nr_throttled); - if(cg->st_cpu_throttled_time) rrdset_is_obsolete___safe_from_collector_thread(cg->st_cpu_throttled_time); - if(cg->st_cpu_shares) rrdset_is_obsolete___safe_from_collector_thread(cg->st_cpu_shares); - if(cg->st_mem) rrdset_is_obsolete___safe_from_collector_thread(cg->st_mem); - if(cg->st_writeback) rrdset_is_obsolete___safe_from_collector_thread(cg->st_writeback); - if(cg->st_mem_activity) rrdset_is_obsolete___safe_from_collector_thread(cg->st_mem_activity); - if(cg->st_pgfaults) rrdset_is_obsolete___safe_from_collector_thread(cg->st_pgfaults); - if(cg->st_mem_usage) rrdset_is_obsolete___safe_from_collector_thread(cg->st_mem_usage); - if(cg->st_mem_usage_limit) rrdset_is_obsolete___safe_from_collector_thread(cg->st_mem_usage_limit); - if(cg->st_mem_utilization) rrdset_is_obsolete___safe_from_collector_thread(cg->st_mem_utilization); - if(cg->st_mem_failcnt) rrdset_is_obsolete___safe_from_collector_thread(cg->st_mem_failcnt); - if(cg->st_io) rrdset_is_obsolete___safe_from_collector_thread(cg->st_io); - if(cg->st_serviced_ops) rrdset_is_obsolete___safe_from_collector_thread(cg->st_serviced_ops); - if(cg->st_throttle_io) rrdset_is_obsolete___safe_from_collector_thread(cg->st_throttle_io); - if(cg->st_throttle_serviced_ops) rrdset_is_obsolete___safe_from_collector_thread(cg->st_throttle_serviced_ops); - if(cg->st_queued_ops) rrdset_is_obsolete___safe_from_collector_thread(cg->st_queued_ops); - if(cg->st_merged_ops) rrdset_is_obsolete___safe_from_collector_thread(cg->st_merged_ops); - if(cg->st_pids) rrdset_is_obsolete___safe_from_collector_thread(cg->st_pids); - - freez(cg->filename_cpuset_cpus); - freez(cg->filename_cpu_cfs_period); - freez(cg->filename_cpu_cfs_quota); - freez(cg->filename_memory_limit); - freez(cg->filename_memoryswap_limit); - - cgroup_free_network_interfaces(cg); - - freez(cg->cpuacct_usage.cpu_percpu); - - freez(cg->cpuacct_stat.filename); - freez(cg->cpuacct_usage.filename); - freez(cg->cpuacct_cpu_throttling.filename); - freez(cg->cpuacct_cpu_shares.filename); - - arl_free(cg->memory.arl_base); - freez(cg->memory.filename_detailed); - freez(cg->memory.filename_failcnt); - freez(cg->memory.filename_usage_in_bytes); - freez(cg->memory.filename_msw_usage_in_bytes); - - freez(cg->io_service_bytes.filename); - freez(cg->io_serviced.filename); - - freez(cg->throttle_io_service_bytes.filename); - freez(cg->throttle_io_serviced.filename); - - freez(cg->io_merged.filename); - freez(cg->io_queued.filename); - freez(cg->pids.pids_current_filename); - - free_pressure(&cg->cpu_pressure); - free_pressure(&cg->io_pressure); - free_pressure(&cg->memory_pressure); - free_pressure(&cg->irq_pressure); - - freez(cg->id); - freez(cg->intermediate_id); - freez(cg->chart_id); - freez(cg->name); - - rrdlabels_destroy(cg->chart_labels); - - freez(cg); - - cgroup_root_count--; -} - -// ---------------------------------------------------------------------------- -// add/remove/find cgroup objects - -#define CGROUP_CHARTID_LINE_MAX 1024 - -static inline char *cgroup_chart_id_strdupz(const char *s) { - if(!s || !*s) s = "/"; - - if(*s == '/' && s[1] != '\0') s++; - - char *r = strdupz(s); - netdata_fix_chart_id(r); - - return r; -} - -// TODO: move the code to cgroup_chart_id_strdupz() when the renaming script is fixed -static inline void substitute_dots_in_id(char *s) { - // dots are used to distinguish chart type and id in streaming, so we should replace them - for (char *d = s; *d; d++) { - if (*d == '.') - *d = '-'; - } -} - -// ---------------------------------------------------------------------------- -// parse k8s labels - -char *cgroup_parse_resolved_name_and_labels(RRDLABELS *labels, char *data) { - // the first word, up to the first space is the name - char *name = strsep_skip_consecutive_separators(&data, " "); - - // the rest are key=value pairs separated by comma - while(data) { - char *pair = strsep_skip_consecutive_separators(&data, ","); - rrdlabels_add_pair(labels, pair, RRDLABEL_SRC_AUTO | RRDLABEL_SRC_K8S); - } - - return name; -} - -static inline void discovery_rename_cgroup(struct cgroup *cg) { - if (!cg->pending_renames) { - return; - } - cg->pending_renames--; - - netdata_log_debug(D_CGROUP, "looking for the name of cgroup '%s' with chart id '%s'", cg->id, cg->chart_id); - netdata_log_debug(D_CGROUP, "executing command %s \"%s\" for cgroup '%s'", cgroups_rename_script, cg->intermediate_id, cg->chart_id); - pid_t cgroup_pid; - - FILE *fp_child_input, *fp_child_output; - (void)netdata_popen_raw_default_flags_and_environment(&cgroup_pid, &fp_child_input, &fp_child_output, cgroups_rename_script, cg->id, cg->intermediate_id); - if (!fp_child_output) { - collector_error("CGROUP: cannot popen(%s \"%s\", \"r\").", cgroups_rename_script, cg->intermediate_id); - cg->pending_renames = 0; - cg->processed = 1; - return; - } - - char buffer[CGROUP_CHARTID_LINE_MAX + 1]; - char *new_name = fgets(buffer, CGROUP_CHARTID_LINE_MAX, fp_child_output); - int exit_code = netdata_pclose(fp_child_input, fp_child_output, cgroup_pid); - - switch (exit_code) { - case 0: - cg->pending_renames = 0; - break; - - case 3: - cg->pending_renames = 0; - cg->processed = 1; - break; - - default: - break; - } - - if (cg->pending_renames || cg->processed) - return; - if (!new_name || !*new_name || *new_name == '\n') - return; - if (!(new_name = trim(new_name))) - return; - - if (!cg->chart_labels) - cg->chart_labels = rrdlabels_create(); - // read the new labels and remove the obsolete ones - rrdlabels_unmark_all(cg->chart_labels); - char *name = cgroup_parse_resolved_name_and_labels(cg->chart_labels, new_name); - rrdlabels_remove_all_unmarked(cg->chart_labels); - - freez(cg->name); - cg->name = strdupz(name); - - freez(cg->chart_id); - cg->chart_id = cgroup_chart_id_strdupz(name); - - substitute_dots_in_id(cg->chart_id); - cg->hash_chart_id = simple_hash(cg->chart_id); -} - -static void is_cgroup_procs_exist(netdata_ebpf_cgroup_shm_body_t *out, char *id) { - struct stat buf; - - snprintfz(out->path, FILENAME_MAX, "%s%s/cgroup.procs", cgroup_cpuset_base, id); - if (likely(stat(out->path, &buf) == 0)) { - return; - } - - snprintfz(out->path, FILENAME_MAX, "%s%s/cgroup.procs", cgroup_blkio_base, id); - if (likely(stat(out->path, &buf) == 0)) { - return; - } - - snprintfz(out->path, FILENAME_MAX, "%s%s/cgroup.procs", cgroup_memory_base, id); - if (likely(stat(out->path, &buf) == 0)) { - return; - } - - snprintfz(out->path, FILENAME_MAX, "%s%s/cgroup.procs", cgroup_devices_base, id); - if (likely(stat(out->path, &buf) == 0)) { - return; - } - - out->path[0] = '\0'; - out->enabled = 0; -} - -static inline void convert_cgroup_to_systemd_service(struct cgroup *cg) { - char buffer[CGROUP_CHARTID_LINE_MAX + 1]; - cg->options |= CGROUP_OPTIONS_SYSTEM_SLICE_SERVICE; - strncpyz(buffer, cg->id, CGROUP_CHARTID_LINE_MAX); - char *s = buffer; - - // skip to the last slash - size_t len = strlen(s); - while (len--) { - if (unlikely(s[len] == '/')) { - break; - } - } - if (len) { - s = &s[len + 1]; - } - - // remove extension - len = strlen(s); - while (len--) { - if (unlikely(s[len] == '.')) { - break; - } - } - if (len) { - s[len] = '\0'; - } - - freez(cg->name); - cg->name = strdupz(s); - - freez(cg->chart_id); - cg->chart_id = cgroup_chart_id_strdupz(s); - substitute_dots_in_id(cg->chart_id); - cg->hash_chart_id = simple_hash(cg->chart_id); -} - -static inline struct cgroup *discovery_cgroup_add(const char *id) { - netdata_log_debug(D_CGROUP, "adding to list, cgroup with id '%s'", id); - - struct cgroup *cg = callocz(1, sizeof(struct cgroup)); - - cg->id = strdupz(id); - cg->hash = simple_hash(cg->id); - - cg->name = strdupz(id); - - cg->intermediate_id = cgroup_chart_id_strdupz(id); - - cg->chart_id = cgroup_chart_id_strdupz(id); - substitute_dots_in_id(cg->chart_id); - cg->hash_chart_id = simple_hash(cg->chart_id); - - if (cgroup_use_unified_cgroups) { - cg->options |= CGROUP_OPTIONS_IS_UNIFIED; - } - - if (!discovered_cgroup_root) - discovered_cgroup_root = cg; - else { - struct cgroup *t; - for (t = discovered_cgroup_root; t->discovered_next; t = t->discovered_next) { - } - t->discovered_next = cg; - } - - return cg; -} - -static inline struct cgroup *discovery_cgroup_find(const char *id) { - netdata_log_debug(D_CGROUP, "searching for cgroup '%s'", id); - - uint32_t hash = simple_hash(id); - - struct cgroup *cg; - for(cg = discovered_cgroup_root; cg ; cg = cg->discovered_next) { - if(hash == cg->hash && strcmp(id, cg->id) == 0) - break; - } - - netdata_log_debug(D_CGROUP, "cgroup '%s' %s in memory", id, (cg)?"found":"not found"); - return cg; -} - -static int calc_cgroup_depth(const char *id) { - int depth = 0; - const char *s; - for (s = id; *s; s++) { - depth += unlikely(*s == '/'); - } - return depth; -} - -static inline void discovery_find_cgroup_in_dir_callback(const char *dir) { - if (!dir || !*dir) { - dir = "/"; - } - - netdata_log_debug(D_CGROUP, "examining cgroup dir '%s'", dir); - - struct cgroup *cg = discovery_cgroup_find(dir); - if (cg) { - cg->available = 1; - return; - } - - if (cgroup_root_count >= cgroup_root_max) { - nd_log_limit_static_global_var(erl, 3600, 0); - nd_log_limit(&erl, NDLS_COLLECTORS, NDLP_WARNING, "CGROUP: maximum number of cgroups reached (%d). No more cgroups will be added.", cgroup_root_count); - return; - } - - if (cgroup_max_depth > 0) { - int depth = calc_cgroup_depth(dir); - if (depth > cgroup_max_depth) { - nd_log_collector(NDLP_DEBUG, "CGROUP: '%s' is too deep (%d, while max is %d)", dir, depth, cgroup_max_depth); - return; - } - } - - cg = discovery_cgroup_add(dir); - cg->available = 1; - cg->first_time_seen = 1; - cg->function_ready = false; - cgroup_root_count++; -} - -static inline int discovery_find_dir_in_subdirs(const char *base, const char *this, void (*callback)(const char *)) { - if(!this) this = base; - netdata_log_debug(D_CGROUP, "searching for directories in '%s' (base '%s')", this?this:"", base); - - size_t dirlen = strlen(this), baselen = strlen(base); - - int ret = -1; - int enabled = -1; - - const char *relative_path = &this[baselen]; - if(!*relative_path) relative_path = "/"; - - DIR *dir = opendir(this); - if(!dir) { - collector_error("CGROUP: cannot read directory '%s'", base); - return ret; - } - ret = 1; - - callback(relative_path); - - struct dirent *de = NULL; - while((de = readdir(dir))) { - if(de->d_type == DT_DIR - && ( - (de->d_name[0] == '.' && de->d_name[1] == '\0') - || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0') - )) - continue; - - if(de->d_type == DT_DIR) { - if(enabled == -1) { - const char *r = relative_path; - if(*r == '\0') r = "/"; - - // do not decent in directories we are not interested - enabled = matches_search_cgroup_paths(r); - } - - if(enabled) { - char *s = mallocz(dirlen + strlen(de->d_name) + 2); - strcpy(s, this); - strcat(s, "/"); - strcat(s, de->d_name); - int ret2 = discovery_find_dir_in_subdirs(base, s, callback); - if(ret2 > 0) ret += ret2; - freez(s); - } - } - } - - closedir(dir); - return ret; -} - -static inline void discovery_mark_as_unavailable_all_cgroups() { - for (struct cgroup *cg = discovered_cgroup_root; cg; cg = cg->discovered_next) { - cg->available = 0; - } -} - -static inline void discovery_update_filenames_cgroup_v1(struct cgroup *cg) { - char filename[FILENAME_MAX + 1]; - struct stat buf; - - // CPU - if (unlikely(cgroup_enable_cpuacct_stat && !cg->cpuacct_stat.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.stat", cgroup_cpuacct_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->cpuacct_stat.filename = strdupz(filename); - cg->cpuacct_stat.enabled = cgroup_enable_cpuacct_stat; - snprintfz(filename, FILENAME_MAX, "%s%s/cpuset.cpus", cgroup_cpuset_base, cg->id); - cg->filename_cpuset_cpus = strdupz(filename); - snprintfz(filename, FILENAME_MAX, "%s%s/cpu.cfs_period_us", cgroup_cpuacct_base, cg->id); - cg->filename_cpu_cfs_period = strdupz(filename); - snprintfz(filename, FILENAME_MAX, "%s%s/cpu.cfs_quota_us", cgroup_cpuacct_base, cg->id); - cg->filename_cpu_cfs_quota = strdupz(filename); - } - } - // FIXME: remove usage_percpu - if (unlikely(cgroup_enable_cpuacct_usage && !cg->cpuacct_usage.filename && !is_cgroup_systemd_service(cg))) { - snprintfz(filename, FILENAME_MAX, "%s%s/cpuacct.usage_percpu", cgroup_cpuacct_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->cpuacct_usage.filename = strdupz(filename); - cg->cpuacct_usage.enabled = cgroup_enable_cpuacct_usage; - } - } - if (unlikely( - cgroup_enable_cpuacct_cpu_throttling && !cg->cpuacct_cpu_throttling.filename && - !is_cgroup_systemd_service(cg))) { - snprintfz(filename, FILENAME_MAX, "%s%s/cpu.stat", cgroup_cpuacct_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->cpuacct_cpu_throttling.filename = strdupz(filename); - cg->cpuacct_cpu_throttling.enabled = cgroup_enable_cpuacct_cpu_throttling; - } - } - if (unlikely( - cgroup_enable_cpuacct_cpu_shares && !cg->cpuacct_cpu_shares.filename && !is_cgroup_systemd_service(cg))) { - snprintfz(filename, FILENAME_MAX, "%s%s/cpu.shares", cgroup_cpuacct_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->cpuacct_cpu_shares.filename = strdupz(filename); - cg->cpuacct_cpu_shares.enabled = cgroup_enable_cpuacct_cpu_shares; - } - } - - // Memory - if (unlikely( - (cgroup_enable_detailed_memory || cgroup_used_memory) && !cg->memory.filename_detailed && - (cgroup_used_memory || cgroup_enable_systemd_services_detailed_memory || !is_cgroup_systemd_service(cg)))) { - snprintfz(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_memory_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->memory.filename_detailed = strdupz(filename); - cg->memory.enabled_detailed = - (cgroup_enable_detailed_memory == CONFIG_BOOLEAN_YES) ? CONFIG_BOOLEAN_YES : CONFIG_BOOLEAN_AUTO; - } - } - if (unlikely(cgroup_enable_memory && !cg->memory.filename_usage_in_bytes)) { - snprintfz(filename, FILENAME_MAX, "%s%s/memory.usage_in_bytes", cgroup_memory_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->memory.filename_usage_in_bytes = strdupz(filename); - cg->memory.enabled_usage_in_bytes = cgroup_enable_memory; - snprintfz(filename, FILENAME_MAX, "%s%s/memory.limit_in_bytes", cgroup_memory_base, cg->id); - cg->filename_memory_limit = strdupz(filename); - } - } - if (unlikely(cgroup_enable_swap && !cg->memory.filename_msw_usage_in_bytes)) { - snprintfz(filename, FILENAME_MAX, "%s%s/memory.memsw.usage_in_bytes", cgroup_memory_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->memory.filename_msw_usage_in_bytes = strdupz(filename); - cg->memory.enabled_msw_usage_in_bytes = cgroup_enable_swap; - snprintfz(filename, FILENAME_MAX, "%s%s/memory.memsw.limit_in_bytes", cgroup_memory_base, cg->id); - cg->filename_memoryswap_limit = strdupz(filename); - } - } - if (unlikely(cgroup_enable_memory_failcnt && !cg->memory.filename_failcnt)) { - snprintfz(filename, FILENAME_MAX, "%s%s/memory.failcnt", cgroup_memory_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->memory.filename_failcnt = strdupz(filename); - cg->memory.enabled_failcnt = cgroup_enable_memory_failcnt; - } - } - - // Blkio - if (unlikely(cgroup_enable_blkio_io && !cg->io_service_bytes.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes_recursive", cgroup_blkio_base, cg->id); - if (unlikely(stat(filename, &buf) != -1)) { - cg->io_service_bytes.filename = strdupz(filename); - cg->io_service_bytes.enabled = cgroup_enable_blkio_io; - } else { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_service_bytes", cgroup_blkio_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->io_service_bytes.filename = strdupz(filename); - cg->io_service_bytes.enabled = cgroup_enable_blkio_io; - } - } - } - if (unlikely(cgroup_enable_blkio_ops && !cg->io_serviced.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_serviced_recursive", cgroup_blkio_base, cg->id); - if (unlikely(stat(filename, &buf) != -1)) { - cg->io_serviced.filename = strdupz(filename); - cg->io_serviced.enabled = cgroup_enable_blkio_ops; - } else { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_serviced", cgroup_blkio_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->io_serviced.filename = strdupz(filename); - cg->io_serviced.enabled = cgroup_enable_blkio_ops; - } - } - } - if (unlikely(cgroup_enable_blkio_throttle_io && !cg->throttle_io_service_bytes.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes_recursive", cgroup_blkio_base, cg->id); - if (unlikely(stat(filename, &buf) != -1)) { - cg->throttle_io_service_bytes.filename = strdupz(filename); - cg->throttle_io_service_bytes.enabled = cgroup_enable_blkio_throttle_io; - } else { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_service_bytes", cgroup_blkio_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->throttle_io_service_bytes.filename = strdupz(filename); - cg->throttle_io_service_bytes.enabled = cgroup_enable_blkio_throttle_io; - } - } - } - if (unlikely(cgroup_enable_blkio_throttle_ops && !cg->throttle_io_serviced.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced_recursive", cgroup_blkio_base, cg->id); - if (unlikely(stat(filename, &buf) != -1)) { - cg->throttle_io_serviced.filename = strdupz(filename); - cg->throttle_io_serviced.enabled = cgroup_enable_blkio_throttle_ops; - } else { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.throttle.io_serviced", cgroup_blkio_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->throttle_io_serviced.filename = strdupz(filename); - cg->throttle_io_serviced.enabled = cgroup_enable_blkio_throttle_ops; - } - } - } - if (unlikely(cgroup_enable_blkio_merged_ops && !cg->io_merged.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_merged_recursive", cgroup_blkio_base, cg->id); - if (unlikely(stat(filename, &buf) != -1)) { - cg->io_merged.filename = strdupz(filename); - cg->io_merged.enabled = cgroup_enable_blkio_merged_ops; - } else { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_merged", cgroup_blkio_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->io_merged.filename = strdupz(filename); - cg->io_merged.enabled = cgroup_enable_blkio_merged_ops; - } - } - } - if (unlikely(cgroup_enable_blkio_queued_ops && !cg->io_queued.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_queued_recursive", cgroup_blkio_base, cg->id); - if (unlikely(stat(filename, &buf) != -1)) { - cg->io_queued.filename = strdupz(filename); - cg->io_queued.enabled = cgroup_enable_blkio_queued_ops; - } else { - snprintfz(filename, FILENAME_MAX, "%s%s/blkio.io_queued", cgroup_blkio_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->io_queued.filename = strdupz(filename); - cg->io_queued.enabled = cgroup_enable_blkio_queued_ops; - } - } - } - - // Pids - if (unlikely(!cg->pids.pids_current_filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/pids.current", cgroup_pids_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->pids.pids_current_filename = strdupz(filename); - } - } -} - -static inline void discovery_update_filenames_cgroup_v2(struct cgroup *cg) { - char filename[FILENAME_MAX + 1]; - struct stat buf; - - // CPU - if (unlikely((cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_cpu_throttling) && !cg->cpuacct_stat.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/cpu.stat", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->cpuacct_stat.filename = strdupz(filename); - cg->cpuacct_stat.enabled = cgroup_enable_cpuacct_stat; - cg->cpuacct_cpu_throttling.enabled = cgroup_enable_cpuacct_cpu_throttling; - cg->filename_cpuset_cpus = NULL; - cg->filename_cpu_cfs_period = NULL; - snprintfz(filename, FILENAME_MAX, "%s%s/cpu.max", cgroup_unified_base, cg->id); - cg->filename_cpu_cfs_quota = strdupz(filename); - } - } - if (unlikely(cgroup_enable_cpuacct_cpu_shares && !cg->cpuacct_cpu_shares.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/cpu.weight", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->cpuacct_cpu_shares.filename = strdupz(filename); - cg->cpuacct_cpu_shares.enabled = cgroup_enable_cpuacct_cpu_shares; - } - } - - // Memory - // FIXME: this if condition! - if (unlikely( - (cgroup_enable_detailed_memory || cgroup_used_memory) && !cg->memory.filename_detailed && - (cgroup_used_memory || cgroup_enable_systemd_services_detailed_memory || !is_cgroup_systemd_service(cg)))) { - snprintfz(filename, FILENAME_MAX, "%s%s/memory.stat", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->memory.filename_detailed = strdupz(filename); - cg->memory.enabled_detailed = - (cgroup_enable_detailed_memory == CONFIG_BOOLEAN_YES) ? CONFIG_BOOLEAN_YES : CONFIG_BOOLEAN_AUTO; - } - } - - if (unlikely(cgroup_enable_memory && !cg->memory.filename_usage_in_bytes)) { - snprintfz(filename, FILENAME_MAX, "%s%s/memory.current", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->memory.filename_usage_in_bytes = strdupz(filename); - cg->memory.enabled_usage_in_bytes = cgroup_enable_memory; - snprintfz(filename, FILENAME_MAX, "%s%s/memory.max", cgroup_unified_base, cg->id); - cg->filename_memory_limit = strdupz(filename); - } - } - - if (unlikely(cgroup_enable_swap && !cg->memory.filename_msw_usage_in_bytes)) { - snprintfz(filename, FILENAME_MAX, "%s%s/memory.swap.current", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->memory.filename_msw_usage_in_bytes = strdupz(filename); - cg->memory.enabled_msw_usage_in_bytes = cgroup_enable_swap; - snprintfz(filename, FILENAME_MAX, "%s%s/memory.swap.max", cgroup_unified_base, cg->id); - cg->filename_memoryswap_limit = strdupz(filename); - } - } - - // Blkio - if (unlikely(cgroup_enable_blkio_io && !cg->io_service_bytes.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/io.stat", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->io_service_bytes.filename = strdupz(filename); - cg->io_service_bytes.enabled = cgroup_enable_blkio_io; - } - } - - if (unlikely(cgroup_enable_blkio_ops && !cg->io_serviced.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/io.stat", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->io_serviced.filename = strdupz(filename); - cg->io_serviced.enabled = cgroup_enable_blkio_ops; - } - } - - // PSI - if (unlikely(cgroup_enable_pressure_cpu && !cg->cpu_pressure.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/cpu.pressure", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->cpu_pressure.filename = strdupz(filename); - cg->cpu_pressure.some.enabled = cgroup_enable_pressure_cpu; - cg->cpu_pressure.full.enabled = CONFIG_BOOLEAN_NO; - } - } - - if (unlikely((cgroup_enable_pressure_io_some || cgroup_enable_pressure_io_full) && !cg->io_pressure.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/io.pressure", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->io_pressure.filename = strdupz(filename); - cg->io_pressure.some.enabled = cgroup_enable_pressure_io_some; - cg->io_pressure.full.enabled = cgroup_enable_pressure_io_full; - } - } - - if (unlikely( - (cgroup_enable_pressure_memory_some || cgroup_enable_pressure_memory_full) && - !cg->memory_pressure.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/memory.pressure", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->memory_pressure.filename = strdupz(filename); - cg->memory_pressure.some.enabled = cgroup_enable_pressure_memory_some; - cg->memory_pressure.full.enabled = cgroup_enable_pressure_memory_full; - } - } - - if (unlikely((cgroup_enable_pressure_irq_some || cgroup_enable_pressure_irq_full) && !cg->irq_pressure.filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/irq.pressure", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->irq_pressure.filename = strdupz(filename); - cg->irq_pressure.some.enabled = cgroup_enable_pressure_irq_some; - cg->irq_pressure.full.enabled = cgroup_enable_pressure_irq_full; - } - } - - // Pids - if (unlikely(!cg->pids.pids_current_filename)) { - snprintfz(filename, FILENAME_MAX, "%s%s/pids.current", cgroup_unified_base, cg->id); - if (likely(stat(filename, &buf) != -1)) { - cg->pids.pids_current_filename = strdupz(filename); - } - } -} - -static inline void discovery_update_filenames_all_cgroups() { - for (struct cgroup *cg = discovered_cgroup_root; cg; cg = cg->discovered_next) { - if (unlikely(!cg->available || !cg->enabled || cg->pending_renames)) - continue; - - if (!cgroup_use_unified_cgroups) - discovery_update_filenames_cgroup_v1(cg); - else if (likely(cgroup_unified_exist)) - discovery_update_filenames_cgroup_v2(cg); - } -} - -static inline void discovery_cleanup_all_cgroups() { - struct cgroup *cg = discovered_cgroup_root, *last = NULL; - - for(; cg ;) { - if(!cg->available) { - // enable the first duplicate cgroup - { - struct cgroup *t; - for (t = discovered_cgroup_root; t; t = t->discovered_next) { - if (t != cg && t->available && !t->enabled && t->options & CGROUP_OPTIONS_DISABLED_DUPLICATE && - (is_cgroup_systemd_service(t) == is_cgroup_systemd_service(cg)) && - t->hash_chart_id == cg->hash_chart_id && !strcmp(t->chart_id, cg->chart_id)) { - netdata_log_debug(D_CGROUP, "Enabling duplicate of cgroup '%s' with id '%s', because the original with id '%s' stopped.", t->chart_id, t->id, cg->id); - t->enabled = 1; - t->options &= ~CGROUP_OPTIONS_DISABLED_DUPLICATE; - break; - } - } - } - - if(!last) - discovered_cgroup_root = cg->discovered_next; - else - last->discovered_next = cg->discovered_next; - - cgroup_free(cg); - - if(!last) - cg = discovered_cgroup_root; - else - cg = last->discovered_next; - } - else { - last = cg; - cg = cg->discovered_next; - } - } -} - -static inline void discovery_copy_discovered_cgroups_to_reader() { - netdata_log_debug(D_CGROUP, "copy discovered cgroups to the main group list"); - - struct cgroup *cg; - - for (cg = discovered_cgroup_root; cg; cg = cg->discovered_next) { - cg->next = cg->discovered_next; - } - - cgroup_root = discovered_cgroup_root; -} - -static inline void discovery_share_cgroups_with_ebpf() { - struct cgroup *cg; - int count; - struct stat buf; - - if (shm_mutex_cgroup_ebpf == SEM_FAILED) { - return; - } - sem_wait(shm_mutex_cgroup_ebpf); - - for (cg = cgroup_root, count = 0; cg; cg = cg->next, count++) { - netdata_ebpf_cgroup_shm_body_t *ptr = &shm_cgroup_ebpf.body[count]; - char *prefix = (is_cgroup_systemd_service(cg)) ? services_chart_id_prefix : cgroup_chart_id_prefix; - snprintfz(ptr->name, CGROUP_EBPF_NAME_SHARED_LENGTH - 1, "%s%s", prefix, cg->chart_id); - ptr->hash = simple_hash(ptr->name); - ptr->options = cg->options; - ptr->enabled = cg->enabled; - if (cgroup_use_unified_cgroups) { - snprintfz(ptr->path, FILENAME_MAX, "%s%s/cgroup.procs", cgroup_unified_base, cg->id); - if (likely(stat(ptr->path, &buf) == -1)) { - ptr->path[0] = '\0'; - ptr->enabled = 0; - } - } else { - is_cgroup_procs_exist(ptr, cg->id); - } - - netdata_log_debug(D_CGROUP, "cgroup shared: NAME=%s, ENABLED=%d", ptr->name, ptr->enabled); - } - - shm_cgroup_ebpf.header->cgroup_root_count = count; - sem_post(shm_mutex_cgroup_ebpf); -} - -static inline void discovery_find_all_cgroups_v1() { - if (cgroup_enable_cpuacct_stat || cgroup_enable_cpuacct_usage) { - if (discovery_find_dir_in_subdirs(cgroup_cpuacct_base, NULL, discovery_find_cgroup_in_dir_callback) == -1) { - cgroup_enable_cpuacct_stat = cgroup_enable_cpuacct_usage = CONFIG_BOOLEAN_NO; - collector_error("CGROUP: disabled cpu statistics."); - } - } - - if (cgroup_enable_blkio_io || cgroup_enable_blkio_ops || cgroup_enable_blkio_throttle_io || - cgroup_enable_blkio_throttle_ops || cgroup_enable_blkio_merged_ops || cgroup_enable_blkio_queued_ops) { - if (discovery_find_dir_in_subdirs(cgroup_blkio_base, NULL, discovery_find_cgroup_in_dir_callback) == -1) { - cgroup_enable_blkio_io = cgroup_enable_blkio_ops = cgroup_enable_blkio_throttle_io = - cgroup_enable_blkio_throttle_ops = cgroup_enable_blkio_merged_ops = cgroup_enable_blkio_queued_ops = - CONFIG_BOOLEAN_NO; - collector_error("CGROUP: disabled blkio statistics."); - } - } - - if (cgroup_enable_memory || cgroup_enable_detailed_memory || cgroup_enable_swap || cgroup_enable_memory_failcnt) { - if (discovery_find_dir_in_subdirs(cgroup_memory_base, NULL, discovery_find_cgroup_in_dir_callback) == -1) { - cgroup_enable_memory = cgroup_enable_detailed_memory = cgroup_enable_swap = cgroup_enable_memory_failcnt = - CONFIG_BOOLEAN_NO; - collector_error("CGROUP: disabled memory statistics."); - } - } - - if (cgroup_search_in_devices) { - if (discovery_find_dir_in_subdirs(cgroup_devices_base, NULL, discovery_find_cgroup_in_dir_callback) == -1) { - cgroup_search_in_devices = 0; - collector_error("CGROUP: disabled devices statistics."); - } - } -} - -static inline void discovery_find_all_cgroups_v2() { - if (discovery_find_dir_in_subdirs(cgroup_unified_base, NULL, discovery_find_cgroup_in_dir_callback) == -1) { - cgroup_unified_exist = CONFIG_BOOLEAN_NO; - collector_error("CGROUP: disabled unified cgroups statistics."); - } -} - -static int is_digits_only(const char *s) { - do { - if (!isdigit(*s++)) { - return 0; - } - } while (*s); - - return 1; -} - -static int is_cgroup_k8s_container(const char *id) { - // examples: - // https://github.com/netdata/netdata/blob/0fc101679dcd12f1cb8acdd07bb4c85d8e553e53/collectors/cgroups.plugin/cgroup-name.sh#L121-L147 - const char *p = id; - const char *pp = NULL; - int i = 0; - size_t l = 3; // pod - while ((p = strstr(p, "pod"))) { - i++; - p += l; - pp = p; - } - return !(i < 2 || !pp || !(pp = strchr(pp, '/')) || !pp++ || !*pp); -} - -#define TASK_COMM_LEN 16 - -static int k8s_get_container_first_proc_comm(const char *id, char *comm) { - if (!is_cgroup_k8s_container(id)) { - return 1; - } - - static procfile *ff = NULL; - - char filename[FILENAME_MAX + 1]; - snprintfz(filename, FILENAME_MAX, "%s/%s/cgroup.procs", cgroup_cpuacct_base, id); - - ff = procfile_reopen(ff, filename, NULL, CGROUP_PROCFILE_FLAG); - if (unlikely(!ff)) { - netdata_log_debug(D_CGROUP, "CGROUP: k8s_is_pause_container(): cannot open file '%s'.", filename); - return 1; - } - - ff = procfile_readall(ff); - if (unlikely(!ff)) { - netdata_log_debug(D_CGROUP, "CGROUP: k8s_is_pause_container(): cannot read file '%s'.", filename); - return 1; - } - - unsigned long lines = procfile_lines(ff); - if (likely(lines < 2)) { - return 1; - } - - char *pid = procfile_lineword(ff, 0, 0); - if (!pid || !*pid) { - return 1; - } - - snprintfz(filename, FILENAME_MAX, "%s/proc/%s/comm", netdata_configured_host_prefix, pid); - - ff = procfile_reopen(ff, filename, NULL, PROCFILE_FLAG_DEFAULT); - if (unlikely(!ff)) { - netdata_log_debug(D_CGROUP, "CGROUP: k8s_is_pause_container(): cannot open file '%s'.", filename); - return 1; - } - - ff = procfile_readall(ff); - if (unlikely(!ff)) { - netdata_log_debug(D_CGROUP, "CGROUP: k8s_is_pause_container(): cannot read file '%s'.", filename); - return 1; - } - - lines = procfile_lines(ff); - if (unlikely(lines != 2)) { - return 1; - } - - char *proc_comm = procfile_lineword(ff, 0, 0); - if (!proc_comm || !*proc_comm) { - return 1; - } - - strncpyz(comm, proc_comm, TASK_COMM_LEN); - return 0; -} - -static inline void discovery_process_first_time_seen_cgroup(struct cgroup *cg) { - if (!cg->first_time_seen) { - return; - } - cg->first_time_seen = 0; - - char comm[TASK_COMM_LEN + 1]; - - if (cg->container_orchestrator == CGROUPS_ORCHESTRATOR_UNSET) { - if (strstr(cg->id, "kubepods")) { - cg->container_orchestrator = CGROUPS_ORCHESTRATOR_K8S; - } else { - cg->container_orchestrator = CGROUPS_ORCHESTRATOR_UNKNOWN; - } - } - - if (is_inside_k8s && !k8s_get_container_first_proc_comm(cg->id, comm)) { - // container initialization may take some time when CPU % is high - // seen on GKE: comm is '6' before 'runc:[2:INIT]' (dunno if it could be another number) - if (is_digits_only(comm) || matches_entrypoint_parent_process_comm(comm)) { - cg->first_time_seen = 1; - return; - } - if (!strcmp(comm, "pause")) { - // a container that holds the network namespace for the pod - // we don't need to collect its metrics - cg->processed = 1; - return; - } - } - - if (cgroup_enable_systemd_services && matches_systemd_services_cgroups(cg->id)) { - netdata_log_debug(D_CGROUP, "cgroup '%s' (name '%s') matches 'cgroups to match as systemd services'", cg->id, cg->chart_id); - convert_cgroup_to_systemd_service(cg); - return; - } - - if (matches_enabled_cgroup_renames(cg->id)) { - netdata_log_debug(D_CGROUP, "cgroup '%s' (name '%s') matches 'run script to rename cgroups matching', will try to rename it", cg->id, cg->chart_id); - if (is_inside_k8s && is_cgroup_k8s_container(cg->id)) { - // it may take up to a minute for the K8s API to return data for the container - // tested on AWS K8s cluster with 100% CPU utilization - cg->pending_renames = 9; // 1.5 minute - } else { - cg->pending_renames = 2; - } - } -} - -static int discovery_is_cgroup_duplicate(struct cgroup *cg) { - // https://github.com/netdata/netdata/issues/797#issuecomment-241248884 - struct cgroup *c; - for (c = discovered_cgroup_root; c; c = c->discovered_next) { - if (c != cg && c->enabled && (is_cgroup_systemd_service(c) == is_cgroup_systemd_service(cg)) && - c->hash_chart_id == cg->hash_chart_id && !strcmp(c->chart_id, cg->chart_id)) { - collector_error( - "CGROUP: chart id '%s' already exists with id '%s' and is enabled and available. Disabling cgroup with id '%s'.", - cg->chart_id, - c->id, - cg->id); - return 1; - } - } - return 0; -} - -// ---------------------------------------------------------------------------- -// cgroup network interfaces - -#define CGROUP_NETWORK_INTERFACE_MAX_LINE 2048 - -static inline void read_cgroup_network_interfaces(struct cgroup *cg) { - netdata_log_debug(D_CGROUP, "looking for the network interfaces of cgroup '%s' with chart id '%s'", cg->id, cg->chart_id); - - pid_t cgroup_pid; - char cgroup_identifier[CGROUP_NETWORK_INTERFACE_MAX_LINE + 1]; - - if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) { - snprintfz(cgroup_identifier, CGROUP_NETWORK_INTERFACE_MAX_LINE, "%s%s", cgroup_cpuacct_base, cg->id); - } - else { - snprintfz(cgroup_identifier, CGROUP_NETWORK_INTERFACE_MAX_LINE, "%s%s", cgroup_unified_base, cg->id); - } - - netdata_log_debug(D_CGROUP, "executing cgroup_identifier %s --cgroup '%s' for cgroup '%s'", cgroups_network_interface_script, cgroup_identifier, cg->id); - FILE *fp_child_input, *fp_child_output; - (void)netdata_popen_raw_default_flags_and_environment(&cgroup_pid, &fp_child_input, &fp_child_output, cgroups_network_interface_script, "--cgroup", cgroup_identifier); - if(!fp_child_output) { - collector_error("CGROUP: cannot popen(%s --cgroup \"%s\", \"r\").", cgroups_network_interface_script, cgroup_identifier); - return; - } - - char *s; - char buffer[CGROUP_NETWORK_INTERFACE_MAX_LINE + 1]; - while((s = fgets(buffer, CGROUP_NETWORK_INTERFACE_MAX_LINE, fp_child_output))) { - trim(s); - - if(*s && *s != '\n') { - char *t = s; - while(*t && *t != ' ') t++; - if(*t == ' ') { - *t = '\0'; - t++; - } - - if(!*s) { - collector_error("CGROUP: empty host interface returned by script"); - continue; - } - - if(!*t) { - collector_error("CGROUP: empty guest interface returned by script"); - continue; - } - - struct cgroup_network_interface *i = callocz(1, sizeof(struct cgroup_network_interface)); - i->host_device = strdupz(s); - i->container_device = strdupz(t); - i->next = cg->interfaces; - cg->interfaces = i; - - collector_info("CGROUP: cgroup '%s' has network interface '%s' as '%s'", cg->id, i->host_device, i->container_device); - - // register a device rename to proc_net_dev.c - netdev_rename_device_add(i->host_device, i->container_device, cg->chart_id, cg->chart_labels, - k8s_is_kubepod(cg) ? "k8s." : "", cgroup_netdev_get(cg)); - } - } - - netdata_pclose(fp_child_input, fp_child_output, cgroup_pid); - // netdata_log_debug(D_CGROUP, "closed cgroup_identifier for cgroup '%s'", cg->id); -} - -static inline void discovery_process_cgroup(struct cgroup *cg) { - if (!cg->available || cg->processed) { - return; - } - - if (cg->first_time_seen) { - worker_is_busy(WORKER_DISCOVERY_PROCESS_FIRST_TIME); - discovery_process_first_time_seen_cgroup(cg); - if (unlikely(cg->first_time_seen || cg->processed)) { - return; - } - } - - if (cg->pending_renames) { - worker_is_busy(WORKER_DISCOVERY_PROCESS_RENAME); - discovery_rename_cgroup(cg); - if (unlikely(cg->pending_renames || cg->processed)) { - return; - } - } - - cg->processed = 1; - - if ((strlen(cg->chart_id) + strlen(cgroup_chart_id_prefix)) >= RRD_ID_LENGTH_MAX) { - collector_info("cgroup '%s' (chart id '%s') disabled because chart_id exceeds the limit (RRD_ID_LENGTH_MAX)", cg->id, cg->chart_id); - return; - } - - if (is_cgroup_systemd_service(cg)) { - if (discovery_is_cgroup_duplicate(cg)) { - cg->enabled = 0; - cg->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE; - return; - } - if (!cg->chart_labels) - cg->chart_labels = rrdlabels_create(); - rrdlabels_add(cg->chart_labels, "service_name", cg->name, RRDLABEL_SRC_AUTO); - cg->enabled = 1; - return; - } - - if (!(cg->enabled = matches_enabled_cgroup_names(cg->name))) { - netdata_log_debug(D_CGROUP, "cgroup '%s' (name '%s') disabled by 'enable by default cgroups names matching'", cg->id, cg->name); - return; - } - - if (!(cg->enabled = matches_enabled_cgroup_paths(cg->id))) { - netdata_log_debug(D_CGROUP, "cgroup '%s' (name '%s') disabled by 'enable by default cgroups matching'", cg->id, cg->name); - return; - } - - if (discovery_is_cgroup_duplicate(cg)) { - cg->enabled = 0; - cg->options |= CGROUP_OPTIONS_DISABLED_DUPLICATE; - return; - } - - if (!cg->chart_labels) - cg->chart_labels = rrdlabels_create(); - - if (!k8s_is_kubepod(cg)) { - rrdlabels_add(cg->chart_labels, "cgroup_name", cg->name, RRDLABEL_SRC_AUTO); - if (!rrdlabels_exist(cg->chart_labels, "image")) - rrdlabels_add(cg->chart_labels, "image", "", RRDLABEL_SRC_AUTO); - } - - worker_is_busy(WORKER_DISCOVERY_PROCESS_NETWORK); - read_cgroup_network_interfaces(cg); -} - -static inline void discovery_find_all_cgroups() { - netdata_log_debug(D_CGROUP, "searching for cgroups"); - - worker_is_busy(WORKER_DISCOVERY_INIT); - discovery_mark_as_unavailable_all_cgroups(); - - worker_is_busy(WORKER_DISCOVERY_FIND); - if (!cgroup_use_unified_cgroups) { - discovery_find_all_cgroups_v1(); - } else { - discovery_find_all_cgroups_v2(); - } - - for (struct cgroup *cg = discovered_cgroup_root; cg; cg = cg->discovered_next) { - worker_is_busy(WORKER_DISCOVERY_PROCESS); - discovery_process_cgroup(cg); - } - - worker_is_busy(WORKER_DISCOVERY_UPDATE); - discovery_update_filenames_all_cgroups(); - - worker_is_busy(WORKER_DISCOVERY_LOCK); - uv_mutex_lock(&cgroup_root_mutex); - - worker_is_busy(WORKER_DISCOVERY_CLEANUP); - discovery_cleanup_all_cgroups(); - - worker_is_busy(WORKER_DISCOVERY_COPY); - discovery_copy_discovered_cgroups_to_reader(); - - uv_mutex_unlock(&cgroup_root_mutex); - - worker_is_busy(WORKER_DISCOVERY_SHARE); - discovery_share_cgroups_with_ebpf(); - - netdata_log_debug(D_CGROUP, "done searching for cgroups"); -} - -void cgroup_discovery_worker(void *ptr) -{ - UNUSED(ptr); - - worker_register("CGROUPSDISC"); - worker_register_job_name(WORKER_DISCOVERY_INIT, "init"); - worker_register_job_name(WORKER_DISCOVERY_FIND, "find"); - worker_register_job_name(WORKER_DISCOVERY_PROCESS, "process"); - worker_register_job_name(WORKER_DISCOVERY_PROCESS_RENAME, "rename"); - worker_register_job_name(WORKER_DISCOVERY_PROCESS_NETWORK, "network"); - worker_register_job_name(WORKER_DISCOVERY_PROCESS_FIRST_TIME, "new"); - worker_register_job_name(WORKER_DISCOVERY_UPDATE, "update"); - worker_register_job_name(WORKER_DISCOVERY_CLEANUP, "cleanup"); - worker_register_job_name(WORKER_DISCOVERY_COPY, "copy"); - worker_register_job_name(WORKER_DISCOVERY_SHARE, "share"); - worker_register_job_name(WORKER_DISCOVERY_LOCK, "lock"); - - entrypoint_parent_process_comm = simple_pattern_create( - " runc:[* " // http://terenceli.github.io/%E6%8A%80%E6%9C%AF/2021/12/28/runc-internals-3) - " exe ", // https://github.com/falcosecurity/falco/blob/9d41b0a151b83693929d3a9c84f7c5c85d070d3a/rules/falco_rules.yaml#L1961 - NULL, - SIMPLE_PATTERN_EXACT, true); - - service_register(SERVICE_THREAD_TYPE_LIBUV, NULL, NULL, NULL, false); - - while (service_running(SERVICE_COLLECTORS)) { - worker_is_idle(); - - uv_mutex_lock(&discovery_thread.mutex); - uv_cond_wait(&discovery_thread.cond_var, &discovery_thread.mutex); - uv_mutex_unlock(&discovery_thread.mutex); - - if (unlikely(!service_running(SERVICE_COLLECTORS))) - break; - - discovery_find_all_cgroups(); - } - collector_info("discovery thread stopped"); - worker_unregister(); - service_exits(); - __atomic_store_n(&discovery_thread.exited,1,__ATOMIC_RELAXED); -} |