ansible-collection-prometheus/roles/systemd_exporter

Ansible Role: systemd exporter

Description

Deploy prometheus systemd exporter using ansible.

Requirements

• Ansible >= 2.9 (It might work on previous versions, but we cannot guarantee it)
• gnu-tar on Mac deployer host (brew install gnu-tar)

Role Variables

All variables which can be overridden are stored in defaults/main.yml file as well as in table below.

Name	Default Value	Description
systemd_exporter_version	0.4.0	SystemD exporter package version. Also accepts latest as parameter.
systemd_exporter_skip_install	false	SystemD exporter installation tasks gets skipped when set to true.
systemd_exporter_binary_local_dir	""	Allows to use local packages instead of ones distributed on github. As parameter it takes a directory where systemd_exporter binary is stored on host on which ansible is ran. This overrides systemd_exporter_version parameter
systemd_exporter_binary_url	https://github.com/prometheus-community/systemd_exporter/releases/download/v{{ systemd_exporter_version }}/systemd_exporter-{{ systemd_exporter_version }}.linux-{{ go_arch }}.tar.gz	URL of the systemd exporter binaries .tar.gz file
systemd_exporter_checksums_url	https://github.com/prometheus-community/systemd_exporter/releases/download/v{{ systemd_exporter_version }}/sha256sums.txt	URL of the systemd exporter checksums file
systemd_exporter_web_listen_address	"0.0.0.0:9558"	Address on which systemd exporter will listen
systemd_exporter_enable_restart_count	false	Enables service restart count metrics. This feature only works with systemd 235 and above
systemd_exporter_enable_ip_accounting	false	Enables service ip accounting metrics. This feature only works with systemd 235 and above
systemd_exporter_enable_file_descriptor_size	false	Enables file descriptor size metrics. This feature will cause exporter to run as root as it needs access to /proc/X/fd
systemd_exporter_unit_allowlist	""	Include some systemd units. Expects a regex. More in https://github.com/prometheus-community/systemd_exporter#configuration
systemd_exporter_unit_denylist	""	Exclude some systemd units. Expects a regex. More in https://github.com/prometheus-community/systemd_exporter#configuration

Example

Playbook

Use it in a playbook as follows:

- hosts: all
  roles:
    - prometheus.prometheus.systemd_exporter

Local Testing

The preferred way of locally testing the role is to use Docker and molecule (v3.x). You will have to install Docker on your system. See "Get started" for a Docker package suitable to for your system. Running your tests is as simple as executing molecule test.

Continuous Intergation

Combining molecule and circle CI allows us to test how new PRs will behave when used with multiple ansible versions and multiple operating systems. This also allows use to create test scenarios for different role configurations. As a result we have a quite large test matrix which can take more time than local testing, so please be patient.

Contributing

See contributor guideline.

Troubleshooting

See troubleshooting.

License

This project is licensed under MIT License. See LICENSE for more details.