telegraf/plugins/inputs/systemd_units

Systemd Units Plugin

The systemd_units plugin gathers systemd unit status on Linux. It relies on systemctl list-units --all --type=service to collect data on service status.

The results are tagged with the unit name and provide enumerated fields for loaded, active and running fields, indicating the unit health.

This plugin is related to the win_services module, which fulfills the same purpose on windows.

In addition to services, this plugin can gather other unit types as well, see systemctl list-units --all --type help for possible options.

Configuration

[[inputs.systemd_units]]
  ## Set timeout for systemctl execution
  # timeout = "1s"
  #
  ## Filter for a specific unit type, default is "service", other possible
  ## values are "socket", "target", "device", "mount", "automount", "swap",
  ## "timer", "path", "slice" and "scope ":
  # unittype = "service"

Metrics

• systemd_units:
  • tags:
    • name (string, unit name)
    • load (string, load state)
    • active (string, active state)
    • sub (string, sub state)
  • fields:
    • load_code (int, see below)
    • active_code (int, see below)
    • sub_code (int, see below)

Load

enumeration of unit_load_state_table

Value	Meaning	Description
0	loaded	unit is ~
1	stub	unit is ~
2	not-found	unit is ~
3	bad-setting	unit is ~
4	error	unit is ~
5	merged	unit is ~
6	masked	unit is ~

Active

enumeration of unit_active_state_table

Value	Meaning	Description
0	active	unit is ~
1	reloading	unit is ~
2	inactive	unit is ~
3	failed	unit is ~
4	activating	unit is ~
5	deactivating	unit is ~

Sub

enumeration of sub states, see various unittype_state_tables; duplicates were removed, tables are hex aligned to keep some space for future values

Value	Meaning	Description
		service_state_table start at 0x0000
0x0000	running	unit is ~
0x0001	dead	unit is ~
0x0002	start-pre	unit is ~
0x0003	start	unit is ~
0x0004	exited	unit is ~
0x0005	reload	unit is ~
0x0006	stop	unit is ~
0x0007	stop-watchdog	unit is ~
0x0008	stop-sigterm	unit is ~
0x0009	stop-sigkill	unit is ~
0x000a	stop-post	unit is ~
0x000b	final-sigterm	unit is ~
0x000c	failed	unit is ~
0x000d	auto-restart	unit is ~
		service_state_table start at 0x0010
0x0010	waiting	unit is ~
		service_state_table start at 0x0020
0x0020	tentative	unit is ~
0x0021	plugged	unit is ~
		service_state_table start at 0x0030
0x0030	mounting	unit is ~
0x0031	mounting-done	unit is ~
0x0032	mounted	unit is ~
0x0033	remounting	unit is ~
0x0034	unmounting	unit is ~
0x0035	remounting-sigterm	unit is ~
0x0036	remounting-sigkill	unit is ~
0x0037	unmounting-sigterm	unit is ~
0x0038	unmounting-sigkill	unit is ~
		service_state_table start at 0x0040
		service_state_table start at 0x0050
0x0050	abandoned	unit is ~
		service_state_table start at 0x0060
0x0060	active	unit is ~
		service_state_table start at 0x0070
0x0070	start-chown	unit is ~
0x0071	start-post	unit is ~
0x0072	listening	unit is ~
0x0073	stop-pre	unit is ~
0x0074	stop-pre-sigterm	unit is ~
0x0075	stop-pre-sigkill	unit is ~
0x0076	final-sigkill	unit is ~
		service_state_table start at 0x0080
0x0080	activating	unit is ~
0x0081	activating-done	unit is ~
0x0082	deactivating	unit is ~
0x0083	deactivating-sigterm	unit is ~
0x0084	deactivating-sigkill	unit is ~
		service_state_table start at 0x0090
		service_state_table start at 0x00a0
0x00a0	elapsed	unit is ~

Example Output

Linux Systemd Units:

$ telegraf --test --config /tmp/telegraf.conf
> systemd_units,host=host1.example.com,name=dbus.service,load=loaded,active=active,sub=running load_code=0i,active_code=0i,sub_code=0i 1533730725000000000
> systemd_units,host=host1.example.com,name=networking.service,load=loaded,active=failed,sub=failed load_code=0i,active_code=3i,sub_code=12i 1533730725000000000
> systemd_units,host=host1.example.com,name=ssh.service,load=loaded,active=active,sub=running load_code=0i,active_code=0i,sub_code=0i 1533730725000000000
...

Possible Improvements

• add blacklist to filter names