procstat

Procstat Input Plugin

The procstat plugin can be used to monitor the system resource usage of one or more processes. The procstat_lookup metric displays the query information, specifically the number of PIDs returned on a search

Processes can be selected for monitoring using one of several methods:

• pidfile
• exe
• pattern
• user
• systemd_unit
• cgroup
• supervisor_unit
• win_service

Global configuration options

In addition to the plugin-specific configuration settings, plugins support additional global and plugin configuration settings. These settings are used to modify metrics, tags, and field or create aliases and configure ordering, etc. See the CONFIGURATION.md for more details.

Configuration

# Monitor process cpu and memory usage
[[inputs.procstat]]
  ## PID file to monitor process
  pid_file = "/var/run/nginx.pid"
  ## executable name (ie, pgrep <exe>)
  # exe = "nginx"
  ## pattern as argument for pgrep (ie, pgrep -f <pattern>)
  # pattern = "nginx"
  ## user as argument for pgrep (ie, pgrep -u <user>)
  # user = "nginx"
  ## Systemd unit name, supports globs when include_systemd_children is set to true
  # systemd_unit = "nginx.service"
  # include_systemd_children = false
  ## CGroup name or path, supports globs
  # cgroup = "systemd/system.slice/nginx.service"
  ## Supervisor service names of hypervisorctl management
  # supervisor_units = ["webserver", "proxy"]

  ## Windows service name
  # win_service = ""

  ## override for process_name
  ## This is optional; default is sourced from /proc/<pid>/status
  # process_name = "bar"

  ## Field name prefix
  # prefix = ""

  ## Mode to use when calculating CPU usage. Can be one of 'solaris' or 'irix'.
  # mode = "irix"

  ## Add the given information tag instead of a field
  ## This allows to create unique metrics/series when collecting processes with
  ## otherwise identical tags. However, please be careful as this can easily
  ## result in a large number of series, especially with short-lived processes,
  ## creating high cardinality at the output.
  ## Available options are:
  ##   cmdline -- full commandline
  ##   pid     -- ID of the process
  ##   ppid    -- ID of the process' parent
  ##   status  -- state of the process
  ##   user    -- username owning the process
  # tag_with = []


  ## Method to use when finding process IDs.  Can be one of 'pgrep', or
  ## 'native'.  The pgrep finder calls the pgrep executable in the PATH while
  ## the native finder performs the search directly in a manor dependent on the
  ## platform.  Default is 'pgrep'
  # pid_finder = "pgrep"

Windows support

Preliminary support for Windows has been added, however you may prefer using the win_perf_counters input plugin as a more mature alternative.

Darwin specifics

If you use this plugin with supervisor_units and pattern on Darwin, you have to use the pgrep finder as the underlying library relies on pgrep.

Permissions

Some files or directories may require elevated permissions. As such a user may need to provide telegraf with higher levels of permissions to access and produce metrics.

Metrics

For descriptions of these tags and fields, consider reading one of the following:

• Linux Kernel /proc Filesystem
• proc manpage

Below are an example set of tags and fields:

• procstat
  • tags:
    • pid (when pid_tag is true)
    • cmdline (when 'cmdline_tag' is true)
    • process_name
    • pidfile (when defined)
    • exe (when defined)
    • pattern (when defined)
    • user (when selected)
    • systemd_unit (when defined)
    • cgroup (when defined)
    • cgroup_full (when cgroup or systemd_unit is used with glob)
    • supervisor_unit (when defined)
    • win_service (when defined)
  • fields:
    • child_major_faults (int)
    • child_minor_faults (int)
    • created_at (int) [epoch in nanoseconds]
    • cpu_time (int)
    • cpu_time_iowait (float) (zero for all OSes except Linux)
    • cpu_time_system (float)
    • cpu_time_user (float)
    • cpu_usage (float)
    • involuntary_context_switches (int)
    • major_faults (int)
    • memory_anonymous (int)
    • memory_private_clean (int)
    • memory_private_dirty (int)
    • memory_pss (int)
    • memory_referenced (int)
    • memory_rss (int)
    • memory_shared_clean (int)
    • memory_shared_dirty (int)
    • memory_size (int)
    • memory_swap (int)
    • memory_usage (float)
    • memory_vms (int)
    • minor_faults (int)
    • nice_priority (int)
    • num_fds (int, telegraf may need to be ran as root)
    • num_threads (int)
    • pid (int)
    • ppid (int)
    • status (string)
    • read_bytes (int, telegraf may need to be ran as root)
    • read_count (int, telegraf may need to be ran as root)
    • realtime_priority (int)
    • rlimit_cpu_time_hard (int)
    • rlimit_cpu_time_soft (int)
    • rlimit_file_locks_hard (int)
    • rlimit_file_locks_soft (int)
    • rlimit_memory_data_hard (int)
    • rlimit_memory_data_soft (int)
    • rlimit_memory_locked_hard (int)
    • rlimit_memory_locked_soft (int)
    • rlimit_memory_rss_hard (int)
    • rlimit_memory_rss_soft (int)
    • rlimit_memory_stack_hard (int)
    • rlimit_memory_stack_soft (int)
    • rlimit_memory_vms_hard (int)
    • rlimit_memory_vms_soft (int)
    • rlimit_nice_priority_hard (int)
    • rlimit_nice_priority_soft (int)
    • rlimit_num_fds_hard (int)
    • rlimit_num_fds_soft (int)
    • rlimit_realtime_priority_hard (int)
    • rlimit_realtime_priority_soft (int)
    • rlimit_signals_pending_hard (int)
    • rlimit_signals_pending_soft (int)
    • signals_pending (int)
    • voluntary_context_switches (int)
    • write_bytes (int, telegraf may need to be ran as root)
    • write_count (int, telegraf may need to be ran as root)
• procstat_lookup
  • tags:
    • exe
    • pid_finder
    • pid_file
    • pattern
    • prefix
    • user
    • systemd_unit
    • cgroup
    • supervisor_unit
    • win_service
    • result
  • fields:
    • pid_count (int)
    • running (int)
    • result_code (int, success = 0, lookup_error = 1)

NOTE: Resource limit > 2147483647 will be reported as 2147483647.

Example Output

procstat_lookup,host=prash-laptop,pattern=influxd,pid_finder=pgrep,result=success pid_count=1i,running=1i,result_code=0i 1582089700000000000
procstat,host=prash-laptop,pattern=influxd,process_name=influxd,user=root involuntary_context_switches=151496i,child_minor_faults=1061i,child_major_faults=8i,cpu_time_user=2564.81,pid=32025i,major_faults=8609i,created_at=1580107536000000000i,voluntary_context_switches=1058996i,cpu_time_system=616.98,memory_swap=0i,memory_locked=0i,memory_usage=1.7797634601593018,num_threads=18i,cpu_time_iowait=0,memory_rss=148643840i,memory_vms=1435688960i,memory_data=0i,memory_stack=0i,minor_faults=1856550i 1582089700000000000