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netdata_netdata/collectors/cgroups.plugin/sys_fs_cgroup.c
Costa Tsaousis f466b8aef5
DYNCFG: dynamically configured alerts () 
* cleanup alerts

* fix references

* fix references

* fix references

* load alerts once and apply them to each node

* simplify health_create_alarm_entry()

* Compile without warnings with compiler flags:

   -Wall -Wextra -Wformat=2 -Wshadow -Wno-format-nonliteral -Winit-self

* code re-organization and cleanup

* generate patterns when applying prototypes; give unique dyncfg names to all alerts

* eval expressions keep the source and the parsed_as as STRING pointers

* renamed host to node in dyncfg ids

* renamed host to node in dyncfg ids

* add all cloud roles to the list of parsed X-Netdata-Role header and also default to member access level

* working functionality

* code re-organization: moved health event-loop to a new file, moved health globals to health.c

* rrdcalctemplate is removed; alert_cfg is removed; foreach dimension is removed; RRDCALCs are now instanciated only when they are linked to RRDSETs

* dyncfg alert prototypes initialization for alerts

* health dyncfg split to separate file

* cleanup not-needed code

* normalize matches between parsing and json

* also detect !* for disabled alerts

* dyncfg capability disabled

* Store alert config part1

* Add rrdlabels_common_count

* wip health variables lookup without indexes

* Improve rrdlabels_common_count by reusing rrdlabels_find_label_with_key_unsafe with an additional parameter

* working variables with runtime lookup

* working variables with runtime lookup

* delete rrddimvar and rrdfamily index

* remove rrdsetvar; now all variables are in RRDVARs inside hosts and charts

* added /api/v1/variable that resolves a variable the same way alerts do

* remove rrdcalc from eval

* remove debug code

* remove duplicate assignment

* Fix memory leak

* all alert variables are now handled by alert_variable_lookup() and EVAL is now independent of alerts

* hide all internal structures of EVAL

* Enable -Wformat flag

Signed-off-by: Tasos Katsoulas <tasos@netdata.cloud>

* Adjust binding for calculation, warning, critical

* Remove unused macro

* Update config hash id

* use the right info and summary in alerts log

* use synchronous queries for alerts

* Handle cases when config_hash_id is missing from health_log

* remove deadlock from health worker

* parsing to json payload for health alert prototypes

* cleaner parsing and avoiding memory leaks in case of duplicate members in json

* fix left-over rename of function

* Keep original lookup field to send to the cloud
Cleanup / rename function to store config
Remove unused DEFINEs, functions

* Use ac->lookup

* link jobs to the host when the template is registered; do not accept running a function without a host

* full dyncfg support for health alerts, except action TEST

* working dyncfg additions, updates, removals

* fixed missing source, wrong status updates

* add alerts by type, component, classification, recipient and module at the /api/v2/alerts endpoint

* fix dyncfg unittest

* rename functions

* generalize the json-c parser macros and move them to libnetdata

* report progress when enabling and disabling dyncfg templates

* moved rrdcalc and rrdvar to health

* update alarms

* added schema for alerts; separated alert_action_options from rrdr_options; restructured the json payload for alerts

* enable parsed json alerts; allow sending back accepted but disabled

* added format_version for alerts payload; enables/disables status now is also inheritted by the status of the rules; fixed variable names in json output

* remove the RRDHOST pointer from DYNCFG

* Fix command field submitted to the cloud

* do not send updates to creation requests, for DYNCFG jobs

---------

Signed-off-by: Tasos Katsoulas <tasos@netdata.cloud>
Co-authored-by: Stelios Fragkakis <52996999+stelfrag@users.noreply.github.com>
Co-authored-by: Tasos Katsoulas <tasos@netdata.cloud>
Co-authored-by: ilyam8 <ilya@netdata.cloud>
2024-01-23 20:20:41 +02:00

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// SPDX-License-Identifier: GPL-3.0-or-later
#include "cgroup-internals.h"
// main cgroups thread worker jobs
#define WORKER_CGROUPS_LOCK 0
#define WORKER_CGROUPS_READ 1
#define WORKER_CGROUPS_CHART 2
// ----------------------------------------------------------------------------
// cgroup globals
unsigned long long host_ram_total = 0;
int is_inside_k8s = 0;
long system_page_size = 4096; // system will be queried via sysconf() in configuration()
int cgroup_enable_cpuacct_stat = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_cpuacct_usage = CONFIG_BOOLEAN_NO;
int cgroup_enable_cpuacct_cpu_throttling = CONFIG_BOOLEAN_YES;
int cgroup_enable_cpuacct_cpu_shares = CONFIG_BOOLEAN_NO;
int cgroup_enable_memory = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_detailed_memory = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_memory_failcnt = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_swap = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_blkio_io = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_blkio_ops = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_blkio_throttle_io = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_blkio_throttle_ops = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_blkio_merged_ops = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_blkio_queued_ops = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_pressure_cpu = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_pressure_io_some = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_pressure_io_full = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_pressure_memory_some = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_pressure_memory_full = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_pressure_irq_some = CONFIG_BOOLEAN_NO;
int cgroup_enable_pressure_irq_full = CONFIG_BOOLEAN_AUTO;
int cgroup_enable_systemd_services = CONFIG_BOOLEAN_YES;
int cgroup_enable_systemd_services_detailed_memory = CONFIG_BOOLEAN_NO;
int cgroup_used_memory = CONFIG_BOOLEAN_YES;
int cgroup_use_unified_cgroups = CONFIG_BOOLEAN_NO;
int cgroup_unified_exist = CONFIG_BOOLEAN_AUTO;
int cgroup_search_in_devices = 1;
int cgroup_check_for_new_every = 10;
int cgroup_update_every = 1;
int cgroup_containers_chart_priority = NETDATA_CHART_PRIO_CGROUPS_CONTAINERS;
int cgroup_recheck_zero_blkio_every_iterations = 10;
int cgroup_recheck_zero_mem_failcnt_every_iterations = 10;
int cgroup_recheck_zero_mem_detailed_every_iterations = 10;
char *cgroup_cpuacct_base = NULL;
char *cgroup_cpuset_base = NULL;
char *cgroup_blkio_base = NULL;
char *cgroup_memory_base = NULL;
char *cgroup_devices_base = NULL;
char *cgroup_pids_base = NULL;
char *cgroup_unified_base = NULL;
int cgroup_root_count = 0;
int cgroup_root_max = 1000;
int cgroup_max_depth = 0;
SIMPLE_PATTERN *enabled_cgroup_paths = NULL;
SIMPLE_PATTERN *enabled_cgroup_names = NULL;
SIMPLE_PATTERN *search_cgroup_paths = NULL;
SIMPLE_PATTERN *enabled_cgroup_renames = NULL;
SIMPLE_PATTERN *systemd_services_cgroups = NULL;
SIMPLE_PATTERN *entrypoint_parent_process_comm = NULL;
char *cgroups_network_interface_script = NULL;
int cgroups_check = 0;
uint32_t Read_hash = 0;
uint32_t Write_hash = 0;
uint32_t user_hash = 0;
uint32_t system_hash = 0;
uint32_t user_usec_hash = 0;
uint32_t system_usec_hash = 0;
uint32_t nr_periods_hash = 0;
uint32_t nr_throttled_hash = 0;
uint32_t throttled_time_hash = 0;
uint32_t throttled_usec_hash = 0;
// *** WARNING *** The fields are not thread safe. Take care of safe usage.
struct cgroup *cgroup_root = NULL;
uv_mutex_t cgroup_root_mutex;
struct cgroups_systemd_config_setting cgroups_systemd_options[] = {
{ .name = "legacy", .setting = SYSTEMD_CGROUP_LEGACY },
{ .name = "hybrid", .setting = SYSTEMD_CGROUP_HYBRID },
{ .name = "unified", .setting = SYSTEMD_CGROUP_UNIFIED },
{ .name = NULL, .setting = SYSTEMD_CGROUP_ERR },
};
// Shared memory with information from detected cgroups
netdata_ebpf_cgroup_shm_t shm_cgroup_ebpf = {NULL, NULL};
int shm_fd_cgroup_ebpf = -1;
sem_t *shm_mutex_cgroup_ebpf = SEM_FAILED;
struct discovery_thread discovery_thread;
/* on Fed systemd is not in PATH for some reason */
#define SYSTEMD_CMD_RHEL "/usr/lib/systemd/systemd --version"
#define SYSTEMD_HIERARCHY_STRING "default-hierarchy="
#define MAXSIZE_PROC_CMDLINE 4096
static enum cgroups_systemd_setting cgroups_detect_systemd(const char *exec)
{
pid_t command_pid;
enum cgroups_systemd_setting retval = SYSTEMD_CGROUP_ERR;
char buf[MAXSIZE_PROC_CMDLINE];
char *begin, *end;
FILE *fp_child_input;
FILE *fp_child_output = netdata_popen(exec, &command_pid, &fp_child_input);
if (!fp_child_output)
return retval;
fd_set rfds;
struct timeval timeout;
int fd = fileno(fp_child_output);
int ret = -1;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
timeout.tv_sec = 3;
timeout.tv_usec = 0;
if (fd != -1) {
ret = select(fd + 1, &rfds, NULL, NULL, &timeout);
}
if (ret == -1) {
collector_error("Failed to get the output of \"%s\"", exec);
} else if (ret == 0) {
collector_info("Cannot get the output of \"%s\" within %"PRId64" seconds", exec, (int64_t)timeout.tv_sec);
} else {
while (fgets(buf, MAXSIZE_PROC_CMDLINE, fp_child_output) != NULL) {
if ((begin = strstr(buf, SYSTEMD_HIERARCHY_STRING))) {
end = begin = begin + strlen(SYSTEMD_HIERARCHY_STRING);
if (!*begin)
break;
while (isalpha(*end))
end++;
*end = 0;
for (int i = 0; cgroups_systemd_options[i].name; i++) {
if (!strcmp(begin, cgroups_systemd_options[i].name)) {
retval = cgroups_systemd_options[i].setting;
break;
}
}
break;
}
}
}
if (netdata_pclose(fp_child_input, fp_child_output, command_pid))
return SYSTEMD_CGROUP_ERR;
return retval;
}
static enum cgroups_type cgroups_try_detect_version()
{
pid_t command_pid;
char buf[MAXSIZE_PROC_CMDLINE];
enum cgroups_systemd_setting systemd_setting;
int cgroups2_available = 0;
// 1. check if cgroups2 available on system at all
FILE *fp_child_input;
FILE *fp_child_output = netdata_popen("grep cgroup /proc/filesystems", &command_pid, &fp_child_input);
if (!fp_child_output) {
collector_error("popen failed");
return CGROUPS_AUTODETECT_FAIL;
}
while (fgets(buf, MAXSIZE_PROC_CMDLINE, fp_child_output) != NULL) {
if (strstr(buf, "cgroup2")) {
cgroups2_available = 1;
break;
}
}
if(netdata_pclose(fp_child_input, fp_child_output, command_pid))
return CGROUPS_AUTODETECT_FAIL;
if(!cgroups2_available)
return CGROUPS_V1;
#if defined CGROUP2_SUPER_MAGIC
// 2. check filesystem type for the default mountpoint
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/fs/cgroup");
struct statfs fsinfo;
if (!statfs(filename, &fsinfo)) {
if (fsinfo.f_type == CGROUP2_SUPER_MAGIC)
return CGROUPS_V2;
}
#endif
// 3. check systemd compiletime setting
if ((systemd_setting = cgroups_detect_systemd("systemd --version")) == SYSTEMD_CGROUP_ERR)
systemd_setting = cgroups_detect_systemd(SYSTEMD_CMD_RHEL);
if(systemd_setting == SYSTEMD_CGROUP_ERR)
return CGROUPS_AUTODETECT_FAIL;
if(systemd_setting == SYSTEMD_CGROUP_LEGACY || systemd_setting == SYSTEMD_CGROUP_HYBRID) {
// currently we prefer V1 if HYBRID is set as it seems to be more feature complete
// in the future we might want to continue here if SYSTEMD_CGROUP_HYBRID
// and go ahead with V2
return CGROUPS_V1;
}
// 4. if we are unified as on Fedora (default cgroups2 only mode)
// check kernel command line flag that can override that setting
FILE *fp = fopen("/proc/cmdline", "r");
if (!fp) {
collector_error("Error reading kernel boot commandline parameters");
return CGROUPS_AUTODETECT_FAIL;
}
if (!fgets(buf, MAXSIZE_PROC_CMDLINE, fp)) {
collector_error("couldn't read all cmdline params into buffer");
fclose(fp);
return CGROUPS_AUTODETECT_FAIL;
}
fclose(fp);
if (strstr(buf, "systemd.unified_cgroup_hierarchy=0")) {
collector_info("cgroups v2 (unified cgroups) is available but are disabled on this system.");
return CGROUPS_V1;
}
return CGROUPS_V2;
}
void set_cgroup_base_path(char *filename, char *path) {
if (strncmp(netdata_configured_host_prefix, path, strlen(netdata_configured_host_prefix)) == 0) {
snprintfz(filename, FILENAME_MAX, "%s", path);
} else {
snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, path);
}
}
void read_cgroup_plugin_configuration() {
system_page_size = sysconf(_SC_PAGESIZE);
Read_hash = simple_hash("Read");
Write_hash = simple_hash("Write");
user_hash = simple_hash("user");
system_hash = simple_hash("system");
user_usec_hash = simple_hash("user_usec");
system_usec_hash = simple_hash("system_usec");
nr_periods_hash = simple_hash("nr_periods");
nr_throttled_hash = simple_hash("nr_throttled");
throttled_time_hash = simple_hash("throttled_time");
throttled_usec_hash = simple_hash("throttled_usec");
cgroup_update_every = (int)config_get_number("plugin:cgroups", "update every", localhost->rrd_update_every);
if(cgroup_update_every < localhost->rrd_update_every)
cgroup_update_every = localhost->rrd_update_every;
cgroup_check_for_new_every = (int)config_get_number("plugin:cgroups", "check for new cgroups every", cgroup_check_for_new_every);
if(cgroup_check_for_new_every < cgroup_update_every)
cgroup_check_for_new_every = cgroup_update_every;
cgroup_use_unified_cgroups = config_get_boolean_ondemand("plugin:cgroups", "use unified cgroups", CONFIG_BOOLEAN_AUTO);
if(cgroup_use_unified_cgroups == CONFIG_BOOLEAN_AUTO)
cgroup_use_unified_cgroups = (cgroups_try_detect_version() == CGROUPS_V2);
collector_info("use unified cgroups %s", cgroup_use_unified_cgroups ? "true" : "false");
cgroup_containers_chart_priority = (int)config_get_number("plugin:cgroups", "containers priority", cgroup_containers_chart_priority);
if(cgroup_containers_chart_priority < 1)
cgroup_containers_chart_priority = NETDATA_CHART_PRIO_CGROUPS_CONTAINERS;
cgroup_enable_cpuacct_stat = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct stat (total CPU)", cgroup_enable_cpuacct_stat);
cgroup_enable_cpuacct_usage = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct usage (per core CPU)", cgroup_enable_cpuacct_usage);
cgroup_enable_cpuacct_cpu_throttling = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct cpu throttling", cgroup_enable_cpuacct_cpu_throttling);
cgroup_enable_cpuacct_cpu_shares = config_get_boolean_ondemand("plugin:cgroups", "enable cpuacct cpu shares", cgroup_enable_cpuacct_cpu_shares);
cgroup_enable_memory = config_get_boolean_ondemand("plugin:cgroups", "enable memory", cgroup_enable_memory);
cgroup_enable_detailed_memory = config_get_boolean_ondemand("plugin:cgroups", "enable detailed memory", cgroup_enable_detailed_memory);
cgroup_enable_memory_failcnt = config_get_boolean_ondemand("plugin:cgroups", "enable memory limits fail count", cgroup_enable_memory_failcnt);
cgroup_enable_swap = config_get_boolean_ondemand("plugin:cgroups", "enable swap memory", cgroup_enable_swap);
cgroup_enable_blkio_io = config_get_boolean_ondemand("plugin:cgroups", "enable blkio bandwidth", cgroup_enable_blkio_io);
cgroup_enable_blkio_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio operations", cgroup_enable_blkio_ops);
cgroup_enable_blkio_throttle_io = config_get_boolean_ondemand("plugin:cgroups", "enable blkio throttle bandwidth", cgroup_enable_blkio_throttle_io);
cgroup_enable_blkio_throttle_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio throttle operations", cgroup_enable_blkio_throttle_ops);
cgroup_enable_blkio_queued_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio queued operations", cgroup_enable_blkio_queued_ops);
cgroup_enable_blkio_merged_ops = config_get_boolean_ondemand("plugin:cgroups", "enable blkio merged operations", cgroup_enable_blkio_merged_ops);
cgroup_enable_pressure_cpu = config_get_boolean_ondemand("plugin:cgroups", "enable cpu pressure", cgroup_enable_pressure_cpu);
cgroup_enable_pressure_io_some = config_get_boolean_ondemand("plugin:cgroups", "enable io some pressure", cgroup_enable_pressure_io_some);
cgroup_enable_pressure_io_full = config_get_boolean_ondemand("plugin:cgroups", "enable io full pressure", cgroup_enable_pressure_io_full);
cgroup_enable_pressure_memory_some = config_get_boolean_ondemand("plugin:cgroups", "enable memory some pressure", cgroup_enable_pressure_memory_some);
cgroup_enable_pressure_memory_full = config_get_boolean_ondemand("plugin:cgroups", "enable memory full pressure", cgroup_enable_pressure_memory_full);
cgroup_recheck_zero_blkio_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero blkio every iterations", cgroup_recheck_zero_blkio_every_iterations);
cgroup_recheck_zero_mem_failcnt_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero memory failcnt every iterations", cgroup_recheck_zero_mem_failcnt_every_iterations);
cgroup_recheck_zero_mem_detailed_every_iterations = (int)config_get_number("plugin:cgroups", "recheck zero detailed memory every iterations", cgroup_recheck_zero_mem_detailed_every_iterations);
cgroup_enable_systemd_services = config_get_boolean("plugin:cgroups", "enable systemd services", cgroup_enable_systemd_services);
cgroup_enable_systemd_services_detailed_memory = config_get_boolean("plugin:cgroups", "enable systemd services detailed memory", cgroup_enable_systemd_services_detailed_memory);
cgroup_used_memory = config_get_boolean("plugin:cgroups", "report used memory", cgroup_used_memory);
char filename[FILENAME_MAX + 1], *s;
struct mountinfo *mi, *root = mountinfo_read(0);
if(!cgroup_use_unified_cgroups) {
// cgroup v1 does not have pressure metrics
cgroup_enable_pressure_cpu =
cgroup_enable_pressure_io_some =
cgroup_enable_pressure_io_full =
cgroup_enable_pressure_memory_some =
cgroup_enable_pressure_memory_full = CONFIG_BOOLEAN_NO;
mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "cpuacct");
if (!mi)
mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "cpuacct");
if (!mi) {
collector_error("CGROUP: cannot find cpuacct mountinfo. Assuming default: /sys/fs/cgroup/cpuacct");
s = "/sys/fs/cgroup/cpuacct";
} else
s = mi->mount_point;
set_cgroup_base_path(filename, s);
cgroup_cpuacct_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuacct", filename);
mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "cpuset");
if (!mi)
mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "cpuset");
if (!mi) {
collector_error("CGROUP: cannot find cpuset mountinfo. Assuming default: /sys/fs/cgroup/cpuset");
s = "/sys/fs/cgroup/cpuset";
} else
s = mi->mount_point;
set_cgroup_base_path(filename, s);
cgroup_cpuset_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/cpuset", filename);
mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "blkio");
if (!mi)
mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "blkio");
if (!mi) {
collector_error("CGROUP: cannot find blkio mountinfo. Assuming default: /sys/fs/cgroup/blkio");
s = "/sys/fs/cgroup/blkio";
} else
s = mi->mount_point;
set_cgroup_base_path(filename, s);
cgroup_blkio_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/blkio", filename);
mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "memory");
if (!mi)
mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "memory");
if (!mi) {
collector_error("CGROUP: cannot find memory mountinfo. Assuming default: /sys/fs/cgroup/memory");
s = "/sys/fs/cgroup/memory";
} else
s = mi->mount_point;
set_cgroup_base_path(filename, s);
cgroup_memory_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/memory", filename);
mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "devices");
if (!mi)
mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "devices");
if (!mi) {
collector_error("CGROUP: cannot find devices mountinfo. Assuming default: /sys/fs/cgroup/devices");
s = "/sys/fs/cgroup/devices";
} else
s = mi->mount_point;
set_cgroup_base_path(filename, s);
cgroup_devices_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/devices", filename);
mi = mountinfo_find_by_filesystem_super_option(root, "cgroup", "pids");
if (!mi)
mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup", "pids");
if (!mi) {
collector_error("CGROUP: cannot find pids mountinfo. Assuming default: /sys/fs/cgroup/pids");
s = "/sys/fs/cgroup/pids";
} else
s = mi->mount_point;
set_cgroup_base_path(filename, s);
cgroup_pids_base = config_get("plugin:cgroups", "path to /sys/fs/cgroup/pids", filename);
}
else {
//cgroup_enable_cpuacct_stat =
cgroup_enable_cpuacct_usage =
//cgroup_enable_memory =
//cgroup_enable_detailed_memory =
cgroup_enable_memory_failcnt =
//cgroup_enable_swap =
//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;
cgroup_search_in_devices = 0;
cgroup_enable_systemd_services_detailed_memory = CONFIG_BOOLEAN_NO;
cgroup_used_memory = CONFIG_BOOLEAN_NO; //unified cgroups use different values
//TODO: can there be more than 1 cgroup2 mount point?
//there is no cgroup2 specific super option - for now use 'rw' option
mi = mountinfo_find_by_filesystem_super_option(root, "cgroup2", "rw");
if (!mi) {
mi = mountinfo_find_by_filesystem_mount_source(root, "cgroup2", "cgroup");
}
if (!mi) {
collector_error("CGROUP: cannot find cgroup2 mountinfo. Assuming default: /sys/fs/cgroup");
s = "/sys/fs/cgroup";
} else
s = mi->mount_point;
set_cgroup_base_path(filename, s);
cgroup_unified_base = config_get("plugin:cgroups", "path to unified cgroups", filename);
}
cgroup_root_max = (int)config_get_number("plugin:cgroups", "max cgroups to allow", cgroup_root_max);
cgroup_max_depth = (int)config_get_number("plugin:cgroups", "max cgroups depth to monitor", cgroup_max_depth);
enabled_cgroup_paths = simple_pattern_create(
config_get("plugin:cgroups", "enable by default cgroups matching",
// ----------------------------------------------------------------
" !*/init.scope " // ignore init.scope
" !/system.slice/run-*.scope " // ignore system.slice/run-XXXX.scope
" *user.slice/docker-*" // allow docker rootless containers
" !*user.slice*" // ignore the rest stuff in user.slice
" *.scope " // we need all other *.scope for sure
// ----------------------------------------------------------------
" /machine.slice/*.service " // #3367 systemd-nspawn
// ----------------------------------------------------------------
" */kubepods/pod*/* " // k8s containers
" */kubepods/*/pod*/* " // k8s containers
" */*-kubepods-pod*/* " // k8s containers
" */*-kubepods-*-pod*/* " // k8s containers
" !*kubepods* !*kubelet* " // all other k8s cgroups
// ----------------------------------------------------------------
" !*/vcpu* " // libvirtd adds these sub-cgroups
" !*/emulator " // libvirtd adds these sub-cgroups
" !*.mount "
" !*.partition "
" !*.service "
" !*.service/udev "
" !*.socket "
" !*.slice "
" !*.swap "
" !*.user "
" !/ "
" !/docker "
" !*/libvirt "
" !/lxc "
" !/lxc/*/* " // #1397 #2649
" !/lxc.monitor* "
" !/lxc.pivot "
" !/lxc.payload "
" !*lxcfs.service/.control"
" !/machine "
" !/qemu "
" !/system "
" !/systemd "
" !/user "
" * " // enable anything else
), NULL, SIMPLE_PATTERN_EXACT, true);
enabled_cgroup_names = simple_pattern_create(
config_get("plugin:cgroups", "enable by default cgroups names matching",
" * "
), NULL, SIMPLE_PATTERN_EXACT, true);
search_cgroup_paths = simple_pattern_create(
config_get("plugin:cgroups", "search for cgroups in subpaths matching",
" !*/init.scope " // ignore init.scope
" !*-qemu " // #345
" !*.libvirt-qemu " // #3010
" !/init.scope "
" !/system "
" !/systemd "
" !/user "
" !/lxc/*/* " // #2161 #2649
" !/lxc.monitor "
" !/lxc.payload/*/* "
" !/lxc.payload.* "
" * "
), NULL, SIMPLE_PATTERN_EXACT, true);
snprintfz(filename, FILENAME_MAX, "%s/cgroup-name.sh", netdata_configured_primary_plugins_dir);
cgroups_rename_script = config_get("plugin:cgroups", "script to get cgroup names", filename);
snprintfz(filename, FILENAME_MAX, "%s/cgroup-network", netdata_configured_primary_plugins_dir);
cgroups_network_interface_script = config_get("plugin:cgroups", "script to get cgroup network interfaces", filename);
enabled_cgroup_renames = simple_pattern_create(
config_get("plugin:cgroups", "run script to rename cgroups matching",
" !/ "
" !*.mount "
" !*.socket "
" !*.partition "
" /machine.slice/*.service " // #3367 systemd-nspawn
" !*.service "
" !*.slice "
" !*.swap "
" !*.user "
" !init.scope "
" !*.scope/vcpu* " // libvirtd adds these sub-cgroups
" !*.scope/emulator " // libvirtd adds these sub-cgroups
" *.scope "
" *docker* "
" *lxc* "
" *qemu* "
" */kubepods/pod*/* " // k8s containers
" */kubepods/*/pod*/* " // k8s containers
" */*-kubepods-pod*/* " // k8s containers
" */*-kubepods-*-pod*/* " // k8s containers
" !*kubepods* !*kubelet* " // all other k8s cgroups
" *.libvirt-qemu " // #3010
" * "
), NULL, SIMPLE_PATTERN_EXACT, true);
if(cgroup_enable_systemd_services) {
systemd_services_cgroups = simple_pattern_create(
config_get("plugin:cgroups", "cgroups to match as systemd services",
" !/system.slice/*/*.service "
" /system.slice/*.service "
), NULL, SIMPLE_PATTERN_EXACT, true);
}
mountinfo_free_all(root);
}
void netdata_cgroup_ebpf_set_values(size_t length)
{
sem_wait(shm_mutex_cgroup_ebpf);
shm_cgroup_ebpf.header->cgroup_max = cgroup_root_max;
shm_cgroup_ebpf.header->systemd_enabled = cgroup_enable_systemd_services |
cgroup_enable_systemd_services_detailed_memory |
cgroup_used_memory;
shm_cgroup_ebpf.header->body_length = length;
sem_post(shm_mutex_cgroup_ebpf);
}
void netdata_cgroup_ebpf_initialize_shm()
{
shm_fd_cgroup_ebpf = shm_open(NETDATA_SHARED_MEMORY_EBPF_CGROUP_NAME, O_CREAT | O_RDWR, 0660);
if (shm_fd_cgroup_ebpf < 0) {
collector_error("Cannot initialize shared memory used by cgroup and eBPF, integration won't happen.");
return;
}
size_t length = sizeof(netdata_ebpf_cgroup_shm_header_t) + cgroup_root_max * sizeof(netdata_ebpf_cgroup_shm_body_t);
if (ftruncate(shm_fd_cgroup_ebpf, length)) {
collector_error("Cannot set size for shared memory.");
goto end_init_shm;
}
shm_cgroup_ebpf.header = (netdata_ebpf_cgroup_shm_header_t *) mmap(NULL, length,
PROT_READ | PROT_WRITE, MAP_SHARED,
shm_fd_cgroup_ebpf, 0);
if (unlikely(MAP_FAILED == shm_cgroup_ebpf.header)) {
shm_cgroup_ebpf.header = NULL;
collector_error("Cannot map shared memory used between cgroup and eBPF, integration won't happen");
goto end_init_shm;
}
shm_cgroup_ebpf.body = (netdata_ebpf_cgroup_shm_body_t *) ((char *)shm_cgroup_ebpf.header +
sizeof(netdata_ebpf_cgroup_shm_header_t));
shm_mutex_cgroup_ebpf = sem_open(NETDATA_NAMED_SEMAPHORE_EBPF_CGROUP_NAME, O_CREAT,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH, 1);
if (shm_mutex_cgroup_ebpf != SEM_FAILED) {
netdata_cgroup_ebpf_set_values(length);
return;
}
collector_error("Cannot create semaphore, integration between eBPF and cgroup won't happen");
munmap(shm_cgroup_ebpf.header, length);
shm_cgroup_ebpf.header = NULL;
end_init_shm:
close(shm_fd_cgroup_ebpf);
shm_fd_cgroup_ebpf = -1;
shm_unlink(NETDATA_SHARED_MEMORY_EBPF_CGROUP_NAME);
}
// ---------------------------------------------------------------------------------------------
static unsigned long long calc_delta(unsigned long long curr, unsigned long long prev) {
if (prev > curr) {
return 0;
}
return curr - prev;
}
static unsigned long long calc_percentage(unsigned long long value, unsigned long long total) {
if (total == 0) {
return 0;
}
return (unsigned long long)((NETDATA_DOUBLE)value / (NETDATA_DOUBLE)total * 100);
}
// ----------------------------------------------------------------------------
// read values from /sys
static inline void cgroup_read_cpuacct_stat(struct cpuacct_stat *cp) {
static procfile *ff = NULL;
if(likely(cp->filename)) {
ff = procfile_reopen(ff, cp->filename, NULL, CGROUP_PROCFILE_FLAG);
if(unlikely(!ff)) {
cp->updated = 0;
cgroups_check = 1;
return;
}
ff = procfile_readall(ff);
if(unlikely(!ff)) {
cp->updated = 0;
cgroups_check = 1;
return;
}
unsigned long i, lines = procfile_lines(ff);
if(unlikely(lines < 1)) {
collector_error("CGROUP: file '%s' should have 1+ lines.", cp->filename);
cp->updated = 0;
return;
}
for(i = 0; i < lines ; i++) {
char *s = procfile_lineword(ff, i, 0);
uint32_t hash = simple_hash(s);
if(unlikely(hash == user_hash && !strcmp(s, "user")))
cp->user = str2ull(procfile_lineword(ff, i, 1), NULL);
else if(unlikely(hash == system_hash && !strcmp(s, "system")))
cp->system = str2ull(procfile_lineword(ff, i, 1), NULL);
}
cp->updated = 1;
if(unlikely(cp->enabled == CONFIG_BOOLEAN_AUTO &&
(cp->user || cp->system || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)))
cp->enabled = CONFIG_BOOLEAN_YES;
}
}
static inline void cgroup_read_cpuacct_cpu_stat(struct cpuacct_cpu_throttling *cp) {
if (unlikely(!cp->filename)) {
return;
}
static procfile *ff = NULL;
ff = procfile_reopen(ff, cp->filename, NULL, CGROUP_PROCFILE_FLAG);
if (unlikely(!ff)) {
cp->updated = 0;
cgroups_check = 1;
return;
}
ff = procfile_readall(ff);
if (unlikely(!ff)) {
cp->updated = 0;
cgroups_check = 1;
return;
}
unsigned long lines = procfile_lines(ff);
if (unlikely(lines < 3)) {
collector_error("CGROUP: file '%s' should have 3 lines.", cp->filename);
cp->updated = 0;
return;
}
unsigned long long nr_periods_last = cp->nr_periods;
unsigned long long nr_throttled_last = cp->nr_throttled;
for (unsigned long i = 0; i < lines; i++) {
char *s = procfile_lineword(ff, i, 0);
uint32_t hash = simple_hash(s);
if (unlikely(hash == nr_periods_hash && !strcmp(s, "nr_periods"))) {
cp->nr_periods = str2ull(procfile_lineword(ff, i, 1), NULL);
} else if (unlikely(hash == nr_throttled_hash && !strcmp(s, "nr_throttled"))) {
cp->nr_throttled = str2ull(procfile_lineword(ff, i, 1), NULL);
} else if (unlikely(hash == throttled_time_hash && !strcmp(s, "throttled_time"))) {
cp->throttled_time = str2ull(procfile_lineword(ff, i, 1), NULL);
}
}
cp->nr_throttled_perc =
calc_percentage(calc_delta(cp->nr_throttled, nr_throttled_last), calc_delta(cp->nr_periods, nr_periods_last));
cp->updated = 1;
if (unlikely(cp->enabled == CONFIG_BOOLEAN_AUTO)) {
if (likely(
cp->nr_periods || cp->nr_throttled || cp->throttled_time ||
netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)) {
cp->enabled = CONFIG_BOOLEAN_YES;
}
}
}
static inline void cgroup2_read_cpuacct_cpu_stat(struct cpuacct_stat *cp, struct cpuacct_cpu_throttling *cpt) {
static procfile *ff = NULL;
if (unlikely(!cp->filename)) {
return;
}
ff = procfile_reopen(ff, cp->filename, NULL, CGROUP_PROCFILE_FLAG);
if (unlikely(!ff)) {
cp->updated = 0;
cgroups_check = 1;
return;
}
ff = procfile_readall(ff);
if (unlikely(!ff)) {
cp->updated = 0;
cgroups_check = 1;
return;
}
unsigned long lines = procfile_lines(ff);
if (unlikely(lines < 3)) {
collector_error("CGROUP: file '%s' should have at least 3 lines.", cp->filename);
cp->updated = 0;
return;
}
unsigned long long nr_periods_last = cpt->nr_periods;
unsigned long long nr_throttled_last = cpt->nr_throttled;
for (unsigned long i = 0; i < lines; i++) {
char *s = procfile_lineword(ff, i, 0);
uint32_t hash = simple_hash(s);
if (unlikely(hash == user_usec_hash && !strcmp(s, "user_usec"))) {
cp->user = str2ull(procfile_lineword(ff, i, 1), NULL);
} else if (unlikely(hash == system_usec_hash && !strcmp(s, "system_usec"))) {
cp->system = str2ull(procfile_lineword(ff, i, 1), NULL);
} else if (unlikely(hash == nr_periods_hash && !strcmp(s, "nr_periods"))) {
cpt->nr_periods = str2ull(procfile_lineword(ff, i, 1), NULL);
} else if (unlikely(hash == nr_throttled_hash && !strcmp(s, "nr_throttled"))) {
cpt->nr_throttled = str2ull(procfile_lineword(ff, i, 1), NULL);
} else if (unlikely(hash == throttled_usec_hash && !strcmp(s, "throttled_usec"))) {
cpt->throttled_time = str2ull(procfile_lineword(ff, i, 1), NULL) * 1000; // usec -> ns
}
}
cpt->nr_throttled_perc =
calc_percentage(calc_delta(cpt->nr_throttled, nr_throttled_last), calc_delta(cpt->nr_periods, nr_periods_last));
cp->updated = 1;
cpt->updated = 1;
if (unlikely(cp->enabled == CONFIG_BOOLEAN_AUTO)) {
if (likely(cp->user || cp->system || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)) {
cp->enabled = CONFIG_BOOLEAN_YES;
}
}
if (unlikely(cpt->enabled == CONFIG_BOOLEAN_AUTO)) {
if (likely(
cpt->nr_periods || cpt->nr_throttled || cpt->throttled_time ||
netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)) {
cpt->enabled = CONFIG_BOOLEAN_YES;
}
}
}
static inline void cgroup_read_cpuacct_cpu_shares(struct cpuacct_cpu_shares *cp) {
if (unlikely(!cp->filename)) {
return;
}
if (unlikely(read_single_number_file(cp->filename, &cp->shares))) {
cp->updated = 0;
cgroups_check = 1;
return;
}
cp->updated = 1;
if (unlikely((cp->enabled == CONFIG_BOOLEAN_AUTO)) &&
(cp->shares || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)) {
cp->enabled = CONFIG_BOOLEAN_YES;
}
}
static inline void cgroup_read_cpuacct_usage(struct cpuacct_usage *ca) {
static procfile *ff = NULL;
if(likely(ca->filename)) {
ff = procfile_reopen(ff, ca->filename, NULL, CGROUP_PROCFILE_FLAG);
if(unlikely(!ff)) {
ca->updated = 0;
cgroups_check = 1;
return;
}
ff = procfile_readall(ff);
if(unlikely(!ff)) {
ca->updated = 0;
cgroups_check = 1;
return;
}
if(unlikely(procfile_lines(ff) < 1)) {
collector_error("CGROUP: file '%s' should have 1+ lines but has %zu.", ca->filename, procfile_lines(ff));
ca->updated = 0;
return;
}
unsigned long i = procfile_linewords(ff, 0);
if(unlikely(i == 0)) {
ca->updated = 0;
return;
}
// we may have 1 more CPU reported
while(i > 0) {
char *s = procfile_lineword(ff, 0, i - 1);
if(!*s) i--;
else break;
}
if(unlikely(i != ca->cpus)) {
freez(ca->cpu_percpu);
ca->cpu_percpu = mallocz(sizeof(unsigned long long) * i);
ca->cpus = (unsigned int)i;
}
unsigned long long total = 0;
for(i = 0; i < ca->cpus ;i++) {
unsigned long long n = str2ull(procfile_lineword(ff, 0, i), NULL);
ca->cpu_percpu[i] = n;
total += n;
}
ca->updated = 1;
if(unlikely(ca->enabled == CONFIG_BOOLEAN_AUTO &&
(total || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)))
ca->enabled = CONFIG_BOOLEAN_YES;
}
}
static inline void cgroup_read_blkio(struct blkio *io) {
if(unlikely(io->enabled == CONFIG_BOOLEAN_AUTO && io->delay_counter > 0)) {
io->delay_counter--;
return;
}
if(likely(io->filename)) {
static procfile *ff = NULL;
ff = procfile_reopen(ff, io->filename, NULL, CGROUP_PROCFILE_FLAG);
if(unlikely(!ff)) {
io->updated = 0;
cgroups_check = 1;
return;
}
ff = procfile_readall(ff);
if(unlikely(!ff)) {
io->updated = 0;
cgroups_check = 1;
return;
}
unsigned long i, lines = procfile_lines(ff);
if(unlikely(lines < 1)) {
collector_error("CGROUP: file '%s' should have 1+ lines.", io->filename);
io->updated = 0;
return;
}
io->Read = 0;
io->Write = 0;
/*
io->Sync = 0;
io->Async = 0;
io->Total = 0;
*/
for(i = 0; i < lines ; i++) {
char *s = procfile_lineword(ff, i, 1);
uint32_t hash = simple_hash(s);
if(unlikely(hash == Read_hash && !strcmp(s, "Read")))
io->Read += str2ull(procfile_lineword(ff, i, 2), NULL);
else if(unlikely(hash == Write_hash && !strcmp(s, "Write")))
io->Write += str2ull(procfile_lineword(ff, i, 2), NULL);
/*
else if(unlikely(hash == Sync_hash && !strcmp(s, "Sync")))
io->Sync += str2ull(procfile_lineword(ff, i, 2));
else if(unlikely(hash == Async_hash && !strcmp(s, "Async")))
io->Async += str2ull(procfile_lineword(ff, i, 2));
else if(unlikely(hash == Total_hash && !strcmp(s, "Total")))
io->Total += str2ull(procfile_lineword(ff, i, 2));
*/
}
io->updated = 1;
if(unlikely(io->enabled == CONFIG_BOOLEAN_AUTO)) {
if(unlikely(io->Read || io->Write || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))
io->enabled = CONFIG_BOOLEAN_YES;
else
io->delay_counter = cgroup_recheck_zero_blkio_every_iterations;
}
}
}
static inline void cgroup2_read_blkio(struct blkio *io, unsigned int word_offset) {
if(unlikely(io->enabled == CONFIG_BOOLEAN_AUTO && io->delay_counter > 0)) {
io->delay_counter--;
return;
}
if(likely(io->filename)) {
static procfile *ff = NULL;
ff = procfile_reopen(ff, io->filename, NULL, CGROUP_PROCFILE_FLAG);
if(unlikely(!ff)) {
io->updated = 0;
cgroups_check = 1;
return;
}
ff = procfile_readall(ff);
if(unlikely(!ff)) {
io->updated = 0;
cgroups_check = 1;
return;
}
unsigned long i, lines = procfile_lines(ff);
if (unlikely(lines < 1)) {
collector_error("CGROUP: file '%s' should have 1+ lines.", io->filename);
io->updated = 0;
return;
}
io->Read = 0;
io->Write = 0;
for (i = 0; i < lines; i++) {
io->Read += str2ull(procfile_lineword(ff, i, 2 + word_offset), NULL);
io->Write += str2ull(procfile_lineword(ff, i, 4 + word_offset), NULL);
}
io->updated = 1;
if(unlikely(io->enabled == CONFIG_BOOLEAN_AUTO)) {
if(unlikely(io->Read || io->Write || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))
io->enabled = CONFIG_BOOLEAN_YES;
else
io->delay_counter = cgroup_recheck_zero_blkio_every_iterations;
}
}
}
static inline void cgroup2_read_pressure(struct pressure *res) {
static procfile *ff = NULL;
if (likely(res->filename)) {
ff = procfile_reopen(ff, res->filename, " =", CGROUP_PROCFILE_FLAG);
if (unlikely(!ff)) {
res->updated = 0;
cgroups_check = 1;
return;
}
ff = procfile_readall(ff);
if (unlikely(!ff)) {
res->updated = 0;
cgroups_check = 1;
return;
}
size_t lines = procfile_lines(ff);
if (lines < 1) {
collector_error("CGROUP: file '%s' should have 1+ lines.", res->filename);
res->updated = 0;
return;
}
bool did_some = false, did_full = false;
for(size_t l = 0; l < lines ;l++) {
const char *key = procfile_lineword(ff, l, 0);
if(strcmp(key, "some") == 0) {
res->some.share_time.value10 = strtod(procfile_lineword(ff, l, 2), NULL);
res->some.share_time.value60 = strtod(procfile_lineword(ff, l, 4), NULL);
res->some.share_time.value300 = strtod(procfile_lineword(ff, l, 6), NULL);
res->some.total_time.value_total = str2ull(procfile_lineword(ff, l, 8), NULL) / 1000; // us->ms
did_some = true;
}
else if(strcmp(key, "full") == 0) {
res->full.share_time.value10 = strtod(procfile_lineword(ff, l, 2), NULL);
res->full.share_time.value60 = strtod(procfile_lineword(ff, l, 4), NULL);
res->full.share_time.value300 = strtod(procfile_lineword(ff, l, 6), NULL);
res->full.total_time.value_total = str2ull(procfile_lineword(ff, l, 8), NULL) / 1000; // us->ms
did_full = true;
}
}
res->updated = (did_full || did_some) ? 1 : 0;
if(unlikely(res->some.enabled == CONFIG_BOOLEAN_AUTO))
res->some.enabled = (did_some) ? CONFIG_BOOLEAN_YES : CONFIG_BOOLEAN_NO;
if(unlikely(res->full.enabled == CONFIG_BOOLEAN_AUTO))
res->full.enabled = (did_full) ? CONFIG_BOOLEAN_YES : CONFIG_BOOLEAN_NO;
}
}
static inline void cgroup_read_memory(struct memory *mem, char parent_cg_is_unified) {
static procfile *ff = NULL;
// read detailed ram usage
if(likely(mem->filename_detailed)) {
if(unlikely(mem->enabled_detailed == CONFIG_BOOLEAN_AUTO && mem->delay_counter_detailed > 0)) {
mem->delay_counter_detailed--;
goto memory_next;
}
ff = procfile_reopen(ff, mem->filename_detailed, NULL, CGROUP_PROCFILE_FLAG);
if(unlikely(!ff)) {
mem->updated_detailed = 0;
cgroups_check = 1;
goto memory_next;
}
ff = procfile_readall(ff);
if(unlikely(!ff)) {
mem->updated_detailed = 0;
cgroups_check = 1;
goto memory_next;
}
unsigned long i, lines = procfile_lines(ff);
if(unlikely(lines < 1)) {
collector_error("CGROUP: file '%s' should have 1+ lines.", mem->filename_detailed);
mem->updated_detailed = 0;
goto memory_next;
}
if(unlikely(!mem->arl_base)) {
if(parent_cg_is_unified == 0){
mem->arl_base = arl_create("cgroup/memory", NULL, 60);
arl_expect(mem->arl_base, "total_cache", &mem->total_cache);
arl_expect(mem->arl_base, "total_rss", &mem->total_rss);
arl_expect(mem->arl_base, "total_rss_huge", &mem->total_rss_huge);
arl_expect(mem->arl_base, "total_mapped_file", &mem->total_mapped_file);
arl_expect(mem->arl_base, "total_writeback", &mem->total_writeback);
mem->arl_dirty = arl_expect(mem->arl_base, "total_dirty", &mem->total_dirty);
mem->arl_swap = arl_expect(mem->arl_base, "total_swap", &mem->total_swap);
arl_expect(mem->arl_base, "total_pgpgin", &mem->total_pgpgin);
arl_expect(mem->arl_base, "total_pgpgout", &mem->total_pgpgout);
arl_expect(mem->arl_base, "total_pgfault", &mem->total_pgfault);
arl_expect(mem->arl_base, "total_pgmajfault", &mem->total_pgmajfault);
arl_expect(mem->arl_base, "total_inactive_file", &mem->total_inactive_file);
} else {
mem->arl_base = arl_create("cgroup/memory", NULL, 60);
arl_expect(mem->arl_base, "anon", &mem->anon);
arl_expect(mem->arl_base, "kernel_stack", &mem->kernel_stack);
arl_expect(mem->arl_base, "slab", &mem->slab);
arl_expect(mem->arl_base, "sock", &mem->sock);
arl_expect(mem->arl_base, "anon_thp", &mem->anon_thp);
arl_expect(mem->arl_base, "file", &mem->total_mapped_file);
arl_expect(mem->arl_base, "file_writeback", &mem->total_writeback);
mem->arl_dirty = arl_expect(mem->arl_base, "file_dirty", &mem->total_dirty);
arl_expect(mem->arl_base, "pgfault", &mem->total_pgfault);
arl_expect(mem->arl_base, "pgmajfault", &mem->total_pgmajfault);
arl_expect(mem->arl_base, "inactive_file", &mem->total_inactive_file);
}
}
arl_begin(mem->arl_base);
for(i = 0; i < lines ; i++) {
if(arl_check(mem->arl_base,
procfile_lineword(ff, i, 0),
procfile_lineword(ff, i, 1))) break;
}
if(unlikely(mem->arl_dirty->flags & ARL_ENTRY_FLAG_FOUND))
mem->detailed_has_dirty = 1;
if(unlikely(parent_cg_is_unified == 0 && mem->arl_swap->flags & ARL_ENTRY_FLAG_FOUND))
mem->detailed_has_swap = 1;
// fprintf(stderr, "READ: '%s', cache: %llu, rss: %llu, rss_huge: %llu, mapped_file: %llu, writeback: %llu, dirty: %llu, swap: %llu, pgpgin: %llu, pgpgout: %llu, pgfault: %llu, pgmajfault: %llu, inactive_anon: %llu, active_anon: %llu, inactive_file: %llu, active_file: %llu, unevictable: %llu, hierarchical_memory_limit: %llu, total_cache: %llu, total_rss: %llu, total_rss_huge: %llu, total_mapped_file: %llu, total_writeback: %llu, total_dirty: %llu, total_swap: %llu, total_pgpgin: %llu, total_pgpgout: %llu, total_pgfault: %llu, total_pgmajfault: %llu, total_inactive_anon: %llu, total_active_anon: %llu, total_inactive_file: %llu, total_active_file: %llu, total_unevictable: %llu\n", mem->filename, mem->cache, mem->rss, mem->rss_huge, mem->mapped_file, mem->writeback, mem->dirty, mem->swap, mem->pgpgin, mem->pgpgout, mem->pgfault, mem->pgmajfault, mem->inactive_anon, mem->active_anon, mem->inactive_file, mem->active_file, mem->unevictable, mem->hierarchical_memory_limit, mem->total_cache, mem->total_rss, mem->total_rss_huge, mem->total_mapped_file, mem->total_writeback, mem->total_dirty, mem->total_swap, mem->total_pgpgin, mem->total_pgpgout, mem->total_pgfault, mem->total_pgmajfault, mem->total_inactive_anon, mem->total_active_anon, mem->total_inactive_file, mem->total_active_file, mem->total_unevictable);
mem->updated_detailed = 1;
if(unlikely(mem->enabled_detailed == CONFIG_BOOLEAN_AUTO)) {
if(( (!parent_cg_is_unified) && ( mem->total_cache || mem->total_dirty || mem->total_rss || mem->total_rss_huge || mem->total_mapped_file || mem->total_writeback
|| mem->total_swap || mem->total_pgpgin || mem->total_pgpgout || mem->total_pgfault || mem->total_pgmajfault || mem->total_inactive_file))
|| (parent_cg_is_unified && ( mem->anon || mem->total_dirty || mem->kernel_stack || mem->slab || mem->sock || mem->total_writeback
|| mem->anon_thp || mem->total_pgfault || mem->total_pgmajfault || mem->total_inactive_file))
|| netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)
mem->enabled_detailed = CONFIG_BOOLEAN_YES;
else
mem->delay_counter_detailed = cgroup_recheck_zero_mem_detailed_every_iterations;
}
}
memory_next:
// read usage_in_bytes
if(likely(mem->filename_usage_in_bytes)) {
mem->updated_usage_in_bytes = !read_single_number_file(mem->filename_usage_in_bytes, &mem->usage_in_bytes);
if(unlikely(mem->updated_usage_in_bytes && mem->enabled_usage_in_bytes == CONFIG_BOOLEAN_AUTO &&
(mem->usage_in_bytes || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)))
mem->enabled_usage_in_bytes = CONFIG_BOOLEAN_YES;
}
if (likely(mem->updated_usage_in_bytes && mem->updated_detailed)) {
mem->usage_in_bytes =
(mem->usage_in_bytes > mem->total_inactive_file) ? (mem->usage_in_bytes - mem->total_inactive_file) : 0;
}
// read msw_usage_in_bytes
if(likely(mem->filename_msw_usage_in_bytes)) {
mem->updated_msw_usage_in_bytes = !read_single_number_file(mem->filename_msw_usage_in_bytes, &mem->msw_usage_in_bytes);
if(unlikely(mem->updated_msw_usage_in_bytes && mem->enabled_msw_usage_in_bytes == CONFIG_BOOLEAN_AUTO &&
(mem->msw_usage_in_bytes || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)))
mem->enabled_msw_usage_in_bytes = CONFIG_BOOLEAN_YES;
}
// read failcnt
if(likely(mem->filename_failcnt)) {
if(unlikely(mem->enabled_failcnt == CONFIG_BOOLEAN_AUTO && mem->delay_counter_failcnt > 0)) {
mem->updated_failcnt = 0;
mem->delay_counter_failcnt--;
}
else {
mem->updated_failcnt = !read_single_number_file(mem->filename_failcnt, &mem->failcnt);
if(unlikely(mem->updated_failcnt && mem->enabled_failcnt == CONFIG_BOOLEAN_AUTO)) {
if(unlikely(mem->failcnt || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))
mem->enabled_failcnt = CONFIG_BOOLEAN_YES;
else
mem->delay_counter_failcnt = cgroup_recheck_zero_mem_failcnt_every_iterations;
}
}
}
}
static void cgroup_read_pids_current(struct pids *pids) {
pids->pids_current_updated = 0;
if (unlikely(!pids->pids_current_filename))
return;
pids->pids_current_updated = !read_single_number_file(pids->pids_current_filename, &pids->pids_current);
}
static inline void read_cgroup(struct cgroup *cg) {
netdata_log_debug(D_CGROUP, "reading metrics for cgroups '%s'", cg->id);
if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) {
cgroup_read_cpuacct_stat(&cg->cpuacct_stat);
cgroup_read_cpuacct_usage(&cg->cpuacct_usage);
cgroup_read_cpuacct_cpu_stat(&cg->cpuacct_cpu_throttling);
cgroup_read_cpuacct_cpu_shares(&cg->cpuacct_cpu_shares);
cgroup_read_memory(&cg->memory, 0);
cgroup_read_blkio(&cg->io_service_bytes);
cgroup_read_blkio(&cg->io_serviced);
cgroup_read_blkio(&cg->throttle_io_service_bytes);
cgroup_read_blkio(&cg->throttle_io_serviced);
cgroup_read_blkio(&cg->io_merged);
cgroup_read_blkio(&cg->io_queued);
cgroup_read_pids_current(&cg->pids);
}
else {
//TODO: io_service_bytes and io_serviced use same file merge into 1 function
cgroup2_read_blkio(&cg->io_service_bytes, 0);
cgroup2_read_blkio(&cg->io_serviced, 4);
cgroup2_read_cpuacct_cpu_stat(&cg->cpuacct_stat, &cg->cpuacct_cpu_throttling);
cgroup_read_cpuacct_cpu_shares(&cg->cpuacct_cpu_shares);
cgroup2_read_pressure(&cg->cpu_pressure);
cgroup2_read_pressure(&cg->io_pressure);
cgroup2_read_pressure(&cg->memory_pressure);
cgroup2_read_pressure(&cg->irq_pressure);
cgroup_read_memory(&cg->memory, 1);
cgroup_read_pids_current(&cg->pids);
}
}
static inline void read_all_discovered_cgroups(struct cgroup *root) {
netdata_log_debug(D_CGROUP, "reading metrics for all cgroups");
struct cgroup *cg;
for (cg = root; cg; cg = cg->next) {
if (cg->enabled && !cg->pending_renames) {
read_cgroup(cg);
}
}
}
// update CPU and memory limits
static inline void update_cpu_limits(char **filename, unsigned long long *value, struct cgroup *cg) {
if(*filename) {
int ret = -1;
if(value == &cg->cpuset_cpus) {
unsigned long ncpus = read_cpuset_cpus(*filename, get_system_cpus());
if(ncpus) {
*value = ncpus;
ret = 0;
}
}
else if(value == &cg->cpu_cfs_period || value == &cg->cpu_cfs_quota) {
ret = read_single_number_file(*filename, value);
}
else ret = -1;
if(ret) {
collector_error("Cannot refresh cgroup %s cpu limit by reading '%s'. Will not update its limit anymore.", cg->id, *filename);
freez(*filename);
*filename = NULL;
}
}
}
static inline void update_cpu_limits2(struct cgroup *cg) {
if(cg->filename_cpu_cfs_quota){
static procfile *ff = NULL;
ff = procfile_reopen(ff, cg->filename_cpu_cfs_quota, NULL, CGROUP_PROCFILE_FLAG);
if(unlikely(!ff)) {
goto cpu_limits2_err;
}
ff = procfile_readall(ff);
if(unlikely(!ff)) {
goto cpu_limits2_err;
}
unsigned long lines = procfile_lines(ff);
if (unlikely(lines < 1)) {
collector_error("CGROUP: file '%s' should have 1 lines.", cg->filename_cpu_cfs_quota);
return;
}
cg->cpu_cfs_period = str2ull(procfile_lineword(ff, 0, 1), NULL);
cg->cpuset_cpus = get_system_cpus();
char *s = "max\n\0";
if(strcmp(s, procfile_lineword(ff, 0, 0)) == 0){
cg->cpu_cfs_quota = cg->cpu_cfs_period * cg->cpuset_cpus;
} else {
cg->cpu_cfs_quota = str2ull(procfile_lineword(ff, 0, 0), NULL);
}
netdata_log_debug(D_CGROUP, "CPU limits values: %llu %llu %llu", cg->cpu_cfs_period, cg->cpuset_cpus, cg->cpu_cfs_quota);
return;
cpu_limits2_err:
collector_error("Cannot refresh cgroup %s cpu limit by reading '%s'. Will not update its limit anymore.", cg->id, cg->filename_cpu_cfs_quota);
freez(cg->filename_cpu_cfs_quota);
cg->filename_cpu_cfs_quota = NULL;
}
}
static inline int update_memory_limits(struct cgroup *cg) {
char **filename = &cg->filename_memory_limit;
const RRDVAR_ACQUIRED **chart_var = &cg->chart_var_memory_limit;
unsigned long long *value = &cg->memory_limit;
if(*filename) {
if(unlikely(!*chart_var)) {
*chart_var = rrdvar_chart_variable_add_and_acquire(cg->st_mem_usage, "memory_limit");
if(!*chart_var) {
collector_error("Cannot create cgroup %s chart variable '%s'. Will not update its limit anymore.", cg->id, "memory_limit");
freez(*filename);
*filename = NULL;
}
}
if(*filename && *chart_var) {
if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) {
if(read_single_number_file(*filename, value)) {
collector_error("Cannot refresh cgroup %s memory limit by reading '%s'. Will not update its limit anymore.", cg->id, *filename);
freez(*filename);
*filename = NULL;
}
else {
rrdvar_chart_variable_set(
cg->st_mem_usage, *chart_var, (NETDATA_DOUBLE)(*value) / (1024.0 * 1024.0));
return 1;
}
} else {
char buffer[30 + 1];
int ret = read_file(*filename, buffer, 30);
if(ret) {
collector_error("Cannot refresh cgroup %s memory limit by reading '%s'. Will not update its limit anymore.", cg->id, *filename);
freez(*filename);
*filename = NULL;
return 0;
}
char *s = "max\n\0";
if(strcmp(s, buffer) == 0){
*value = UINT64_MAX;
rrdvar_chart_variable_set(
cg->st_mem_usage, *chart_var, (NETDATA_DOUBLE)(*value) / (1024.0 * 1024.0));
return 1;
}
*value = str2ull(buffer, NULL);
rrdvar_chart_variable_set(cg->st_mem_usage, *chart_var, (NETDATA_DOUBLE)(*value) / (1024.0 * 1024.0));
return 1;
}
}
}
return 0;
}
// ----------------------------------------------------------------------------
// generate charts
void update_cgroup_systemd_services_charts() {
for (struct cgroup *cg = cgroup_root; cg; cg = cg->next) {
if (unlikely(!cg->enabled || cg->pending_renames || !is_cgroup_systemd_service(cg)))
continue;
if (likely(cg->cpuacct_stat.updated)) {
update_cpu_utilization_chart(cg);
}
if (likely(cg->memory.updated_msw_usage_in_bytes)) {
update_mem_usage_chart(cg);
}
if (likely(cg->memory.updated_failcnt)) {
update_mem_failcnt_chart(cg);
}
if (likely(cg->memory.updated_detailed)) {
update_mem_usage_detailed_chart(cg);
update_mem_writeback_chart(cg);
update_mem_pgfaults_chart(cg);
if (!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) {
update_mem_activity_chart(cg);
}
}
if (likely(cg->io_service_bytes.updated)) {
update_io_serviced_bytes_chart(cg);
}
if (likely(cg->io_serviced.updated)) {
update_io_serviced_ops_chart(cg);
}
if (likely(cg->throttle_io_service_bytes.updated)) {
update_throttle_io_serviced_bytes_chart(cg);
}
if (likely(cg->throttle_io_serviced.updated)) {
update_throttle_io_serviced_ops_chart(cg);
}
if (likely(cg->io_queued.updated)) {
update_io_queued_ops_chart(cg);
}
if (likely(cg->io_merged.updated)) {
update_io_merged_ops_chart(cg);
}
if (likely(cg->pids.pids_current_updated)) {
update_pids_current_chart(cg);
}
cg->function_ready = true;
}
}
void update_cgroup_charts() {
for (struct cgroup *cg = cgroup_root; cg; cg = cg->next) {
if(unlikely(!cg->enabled || cg->pending_renames || is_cgroup_systemd_service(cg)))
continue;
if (likely(cg->cpuacct_stat.updated && cg->cpuacct_stat.enabled == CONFIG_BOOLEAN_YES)) {
update_cpu_utilization_chart(cg);
if(likely(cg->filename_cpuset_cpus || cg->filename_cpu_cfs_period || cg->filename_cpu_cfs_quota)) {
if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) {
update_cpu_limits(&cg->filename_cpuset_cpus, &cg->cpuset_cpus, cg);
update_cpu_limits(&cg->filename_cpu_cfs_period, &cg->cpu_cfs_period, cg);
update_cpu_limits(&cg->filename_cpu_cfs_quota, &cg->cpu_cfs_quota, cg);
} else {
update_cpu_limits2(cg);
}
if(unlikely(!cg->chart_var_cpu_limit)) {
cg->chart_var_cpu_limit = rrdvar_chart_variable_add_and_acquire(cg->st_cpu, "cpu_limit");
if(!cg->chart_var_cpu_limit) {
collector_error("Cannot create cgroup %s chart variable 'cpu_limit'. Will not update its limit anymore.", cg->id);
if(cg->filename_cpuset_cpus) freez(cg->filename_cpuset_cpus);
cg->filename_cpuset_cpus = NULL;
if(cg->filename_cpu_cfs_period) freez(cg->filename_cpu_cfs_period);
cg->filename_cpu_cfs_period = NULL;
if(cg->filename_cpu_cfs_quota) freez(cg->filename_cpu_cfs_quota);
cg->filename_cpu_cfs_quota = NULL;
}
} else {
NETDATA_DOUBLE value = 0, quota = 0;
if(likely( ((!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) && (cg->filename_cpuset_cpus || (cg->filename_cpu_cfs_period && cg->filename_cpu_cfs_quota)))
|| ((cg->options & CGROUP_OPTIONS_IS_UNIFIED) && cg->filename_cpu_cfs_quota))) {
if(unlikely(cg->cpu_cfs_quota > 0))
quota = (NETDATA_DOUBLE)cg->cpu_cfs_quota / (NETDATA_DOUBLE)cg->cpu_cfs_period;
if(unlikely(quota > 0 && quota < cg->cpuset_cpus))
value = quota * 100;
else
value = (NETDATA_DOUBLE)cg->cpuset_cpus * 100;
}
if(likely(value)) {
update_cpu_utilization_limit_chart(cg, value);
} else {
if (unlikely(cg->st_cpu_limit)) {
rrdset_is_obsolete___safe_from_collector_thread(cg->st_cpu_limit);
cg->st_cpu_limit = NULL;
}
rrdvar_chart_variable_set(cg->st_cpu, cg->chart_var_cpu_limit, NAN);
}
}
}
}
if (likely(cg->cpuacct_cpu_throttling.updated && cg->cpuacct_cpu_throttling.enabled == CONFIG_BOOLEAN_YES)) {
update_cpu_throttled_chart(cg);
update_cpu_throttled_duration_chart(cg);
}
if (likely(cg->cpuacct_cpu_shares.updated && cg->cpuacct_cpu_shares.enabled == CONFIG_BOOLEAN_YES)) {
update_cpu_shares_chart(cg);
}
if (likely(cg->cpuacct_usage.updated && cg->cpuacct_usage.enabled == CONFIG_BOOLEAN_YES)) {
update_cpu_per_core_usage_chart(cg);
}
if (likely(cg->memory.updated_detailed && cg->memory.enabled_detailed == CONFIG_BOOLEAN_YES)) {
update_mem_usage_detailed_chart(cg);
update_mem_writeback_chart(cg);
if(!(cg->options & CGROUP_OPTIONS_IS_UNIFIED)) {
update_mem_activity_chart(cg);
}
update_mem_pgfaults_chart(cg);
}
if (likely(cg->memory.updated_usage_in_bytes && cg->memory.enabled_usage_in_bytes == CONFIG_BOOLEAN_YES)) {
update_mem_usage_chart(cg);
// FIXME: this if should be only for unlimited charts
if(likely(host_ram_total)) {
// FIXME: do we need to update mem limits on every data collection?
if (likely(update_memory_limits(cg))) {
unsigned long long memory_limit = host_ram_total;
if (unlikely(cg->memory_limit < host_ram_total))
memory_limit = cg->memory_limit;
update_mem_usage_limit_chart(cg, memory_limit);
update_mem_utilization_chart(cg, memory_limit);
} else {
if (unlikely(cg->st_mem_usage_limit)) {
rrdset_is_obsolete___safe_from_collector_thread(cg->st_mem_usage_limit);
cg->st_mem_usage_limit = NULL;
}
if (unlikely(cg->st_mem_utilization)) {
rrdset_is_obsolete___safe_from_collector_thread(cg->st_mem_utilization);
cg->st_mem_utilization = NULL;
}
}
}
}
if (likely(cg->memory.updated_failcnt && cg->memory.enabled_failcnt == CONFIG_BOOLEAN_YES)) {
update_mem_failcnt_chart(cg);
}
if (likely(cg->io_service_bytes.updated && cg->io_service_bytes.enabled == CONFIG_BOOLEAN_YES)) {
update_io_serviced_bytes_chart(cg);
}
if (likely(cg->io_serviced.updated && cg->io_serviced.enabled == CONFIG_BOOLEAN_YES)) {
update_io_serviced_ops_chart(cg);
}
if (likely(cg->throttle_io_service_bytes.updated && cg->throttle_io_service_bytes.enabled == CONFIG_BOOLEAN_YES)) {
update_throttle_io_serviced_bytes_chart(cg);
}
if (likely(cg->throttle_io_serviced.updated && cg->throttle_io_serviced.enabled == CONFIG_BOOLEAN_YES)) {
update_throttle_io_serviced_ops_chart(cg);
}
if (likely(cg->io_queued.updated && cg->io_queued.enabled == CONFIG_BOOLEAN_YES)) {
update_io_queued_ops_chart(cg);
}
if (likely(cg->io_merged.updated && cg->io_merged.enabled == CONFIG_BOOLEAN_YES)) {
update_io_merged_ops_chart(cg);
}
if (likely(cg->pids.pids_current_updated)) {
update_pids_current_chart(cg);
}
if (cg->options & CGROUP_OPTIONS_IS_UNIFIED) {
if (likely(cg->cpu_pressure.updated)) {
if (cg->cpu_pressure.some.enabled) {
update_cpu_some_pressure_chart(cg);
update_cpu_some_pressure_stall_time_chart(cg);
}
if (cg->cpu_pressure.full.enabled) {
update_cpu_full_pressure_chart(cg);
update_cpu_full_pressure_stall_time_chart(cg);
}
}
if (likely(cg->memory_pressure.updated)) {
if (cg->memory_pressure.some.enabled) {
update_mem_some_pressure_chart(cg);
update_mem_some_pressure_stall_time_chart(cg);
}
if (cg->memory_pressure.full.enabled) {
update_mem_full_pressure_chart(cg);
update_mem_full_pressure_stall_time_chart(cg);
}
}
if (likely(cg->irq_pressure.updated)) {
if (cg->irq_pressure.some.enabled) {
update_irq_some_pressure_chart(cg);
update_irq_some_pressure_stall_time_chart(cg);
}
if (cg->irq_pressure.full.enabled) {
update_irq_full_pressure_chart(cg);
update_irq_full_pressure_stall_time_chart(cg);
}
}
if (likely(cg->io_pressure.updated)) {
if (cg->io_pressure.some.enabled) {
update_io_some_pressure_chart(cg);
update_io_some_pressure_stall_time_chart(cg);
}
if (cg->io_pressure.full.enabled) {
update_io_full_pressure_chart(cg);
update_io_full_pressure_stall_time_chart(cg);
}
}
}
cg->function_ready = true;
}
}
// ----------------------------------------------------------------------------
// cgroups main
static void cgroup_main_cleanup(void *ptr) {
worker_unregister();
struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
collector_info("cleaning up...");
usec_t max = 2 * USEC_PER_SEC, step = 50000;
if (!__atomic_load_n(&discovery_thread.exited, __ATOMIC_RELAXED)) {
collector_info("waiting for discovery thread to finish...");
while (!__atomic_load_n(&discovery_thread.exited, __ATOMIC_RELAXED) && max > 0) {
uv_mutex_lock(&discovery_thread.mutex);
uv_cond_signal(&discovery_thread.cond_var);
uv_mutex_unlock(&discovery_thread.mutex);
max -= step;
sleep_usec(step);
}
}
if (shm_mutex_cgroup_ebpf != SEM_FAILED) {
sem_close(shm_mutex_cgroup_ebpf);
}
if (shm_cgroup_ebpf.header) {
shm_cgroup_ebpf.header->cgroup_root_count = 0;
munmap(shm_cgroup_ebpf.header, shm_cgroup_ebpf.header->body_length);
}
if (shm_fd_cgroup_ebpf > 0) {
close(shm_fd_cgroup_ebpf);
}
static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
}
void cgroup_read_host_total_ram() {
procfile *ff = NULL;
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/meminfo");
ff = procfile_open(
config_get("plugin:cgroups", "meminfo filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
if (likely((ff = procfile_readall(ff)) && procfile_lines(ff) && !strncmp(procfile_word(ff, 0), "MemTotal", 8)))
host_ram_total = str2ull(procfile_word(ff, 1), NULL) * 1024;
else
collector_error("Cannot read file %s. Will not create RAM limit charts.", filename);
procfile_close(ff);
}
void *cgroups_main(void *ptr) {
worker_register("CGROUPS");
worker_register_job_name(WORKER_CGROUPS_LOCK, "lock");
worker_register_job_name(WORKER_CGROUPS_READ, "read");
worker_register_job_name(WORKER_CGROUPS_CHART, "chart");
netdata_thread_cleanup_push(cgroup_main_cleanup, ptr);
if (getenv("KUBERNETES_SERVICE_HOST") != NULL && getenv("KUBERNETES_SERVICE_PORT") != NULL) {
is_inside_k8s = 1;
cgroup_enable_cpuacct_cpu_shares = CONFIG_BOOLEAN_YES;
}
read_cgroup_plugin_configuration();
cgroup_read_host_total_ram();
netdata_cgroup_ebpf_initialize_shm();
if (uv_mutex_init(&cgroup_root_mutex)) {
collector_error("CGROUP: cannot initialize mutex for the main cgroup list");
goto exit;
}
discovery_thread.exited = 0;
if (uv_mutex_init(&discovery_thread.mutex)) {
collector_error("CGROUP: cannot initialize mutex for discovery thread");
goto exit;
}
if (uv_cond_init(&discovery_thread.cond_var)) {
collector_error("CGROUP: cannot initialize conditional variable for discovery thread");
goto exit;
}
int error = uv_thread_create(&discovery_thread.thread, cgroup_discovery_worker, NULL);
if (error) {
collector_error("CGROUP: cannot create thread worker. uv_thread_create(): %s", uv_strerror(error));
goto exit;
}
uv_thread_set_name_np(discovery_thread.thread, "P[cgroups]");
// we register this only on localhost
// for the other nodes, the origin server should register it
cgroup_netdev_link_init();
rrd_function_add_inline(localhost, NULL, "containers-vms", 10,
RRDFUNCTIONS_PRIORITY_DEFAULT / 2, RRDFUNCTIONS_CGTOP_HELP,
"top", HTTP_ACCESS_ANY, cgroup_function_cgroup_top);
rrd_function_add_inline(localhost, NULL, "systemd-services", 10,
RRDFUNCTIONS_PRIORITY_DEFAULT / 3, RRDFUNCTIONS_SYSTEMD_SERVICES_HELP,
"top", HTTP_ACCESS_ANY, cgroup_function_systemd_top);
heartbeat_t hb;
heartbeat_init(&hb);
usec_t step = cgroup_update_every * USEC_PER_SEC;
usec_t find_every = cgroup_check_for_new_every * USEC_PER_SEC, find_dt = 0;
netdata_thread_disable_cancelability();
while(service_running(SERVICE_COLLECTORS)) {
worker_is_idle();
usec_t hb_dt = heartbeat_next(&hb, step);
if (unlikely(!service_running(SERVICE_COLLECTORS)))
break;
find_dt += hb_dt;
if (unlikely(find_dt >= find_every || (!is_inside_k8s && cgroups_check))) {
uv_mutex_lock(&discovery_thread.mutex);
uv_cond_signal(&discovery_thread.cond_var);
uv_mutex_unlock(&discovery_thread.mutex);
find_dt = 0;
cgroups_check = 0;
}
worker_is_busy(WORKER_CGROUPS_LOCK);
uv_mutex_lock(&cgroup_root_mutex);
worker_is_busy(WORKER_CGROUPS_READ);
read_all_discovered_cgroups(cgroup_root);
if (unlikely(!service_running(SERVICE_COLLECTORS))) {
uv_mutex_unlock(&cgroup_root_mutex);
break;
}
worker_is_busy(WORKER_CGROUPS_CHART);
update_cgroup_charts();
if (cgroup_enable_systemd_services)
update_cgroup_systemd_services_charts();
if (unlikely(!service_running(SERVICE_COLLECTORS))) {
uv_mutex_unlock(&cgroup_root_mutex);
break;
}
worker_is_idle();
uv_mutex_unlock(&cgroup_root_mutex);
}
exit:
netdata_thread_cleanup_pop(1);
return NULL;
}
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