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telegraf/plugins/inputs/systemd_units/README.md

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Add new "systemd_units" input plugin (#4532)
2019-12-03 00:05:50 +00:00
# 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.
Update changelog
2019-12-03 00:18:56 +00:00
This plugin is related to the [win_services module](/plugins/inputs/win_services/), which
Add new "systemd_units" input plugin (#4532)
2019-12-03 00:05:50 +00:00
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
Update changelog
2019-12-03 00:18:56 +00:00
```toml
Add new "systemd_units" input plugin (#4532)
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[[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](https://github.com/systemd/systemd/blob/c87700a1335f489be31cd3549927da68b5638819/src/basic/unit-def.c#L87)
| 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](https://github.com/systemd/systemd/blob/c87700a1335f489be31cd3549927da68b5638819/src/basic/unit-def.c#L99)
| 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](https://github.com/systemd/systemd/blob/c87700a1335f489be31cd3549927da68b5638819/src/basic/unit-def.c#L163);
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
```
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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
Add new "systemd_units" input plugin (#4532)
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...
```