148 lines
6.3 KiB
Markdown
148 lines
6.3 KiB
Markdown
[](https://gitlab.com/micro-entreprise/opnsense-prom-exporter/)
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[](https://gitlab.com/micro-entreprise/opnsense-prom-exporter/)
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[](https://pypi.python.org/pypi/opnsense-prom-exporter/)
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[](https://pypi.org/project/opnsense-prom-exporter)
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# OPNSense Prometheus exporter
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I've configures OPNSense with High Availability settings using 2 servers.
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- https://docs.opnsense.org/manual/hacarp.html
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- https://docs.opnsense.org/manual/how-tos/carp.html
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So I've 2 servers: _MAIN_ and _BACKUP_, in normal situation _MAIN_ server
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is expected to be `active` and the _BACKUP_ server to be in `hot_standby` state.
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The initial needs was to be able to make sure that _BACKUP_ server is ready (hot standby)
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to get the main server role with the `active` state at any time.
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> Unfortunately I've not found a proper configuration to call OPNSense HTTP API over
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> opnvpn on backup server using blackbox configuratoin. That why I've started to develop
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> this exporter install on a server on the LAN to be able to resquest both OPNSense servers.
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## Metrics
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This exporter gives following metrics, all metrics received following labels:
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- `instance`: by default this is set with the hostname where is running this exporter service
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- `host`: the host of the OPNSense
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- `role`: `main` or `backup` to determine the OPNSense server role.
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### Enums
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- `opnsense_main_ha_state`: (deprecated) OPNSense HA state of the MAIN server
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- `opnsense_backup_ha_state`: (deprecated) OPNSense HA state of the BACKUP server
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- `opnsense_server_ha_state`: OPNSense HA state, on of following value:
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- **active**: that OPNSense server is receiving traffic
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- **hot_standby**: the OPNSense server is ready to be promote as active server
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- **maintenancemode**: the OPNSense server was turned into maintenance mode
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- **unavailable**: the OPNSense server wasn't accessible or return unexpected value
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### Gauges
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- `opnsense_active_server_traffic_rate`: Active OPNSense server traffic rate per interfaces bits/s
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add following labels:
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- **interface**: the interface to export (values given using `--opnsense-interfaces`)
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- **metric**: the metric name (as today one of `rate_bits_in`, `rate_bits_in`)
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## Usage
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> _Note_: Most updated documentation from command line !
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```
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opnsense-exporter --help
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usage: opnsense-exporter [-h] [--check-frequency-seconds FREQUENCY]
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[--main-host MAIN] [--backup-host BACKUP]
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[--opnsense-user USER]
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[--opnsense-interfaces INTERFACES]
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[--opnsense-password PASSWORD]
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[--prometheus-instance PROM_INSTANCE]
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OPNSense prometheus exporter
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optional arguments:
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-h, --help show this help message and exit
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--check-frequency-seconds FREQUENCY, -c FREQUENCY
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How often (in seconds) this server requests
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OPNSense servers (default: 2)
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--main-host MAIN, -m MAIN
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MAIN OPNsense server that should be in `active`
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state in normal configuration.
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--backup-host BACKUP, -b BACKUP
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BACKUP OPNsense server that should be `hot_standby`
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state in normal configuration.
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--opnsense-user USER, -u USER
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OPNsense user. Expect to be the same on MAIN and
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BACKUP servers
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--opnsense-interfaces INTERFACES, -i INTERFACES
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OPNsense interfaces (coma separated) list to
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export trafic rates (bytes/s). An empty string ''
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means not calling the traffic diagnostic REST API
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so no `opnsense_active_server_traffic_rate`
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metric. (default: wan,lan)
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--opnsense-password PASSWORD, -p PASSWORD
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OPNsense password. Expect to be the same on MAIN
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and BACKUP servers
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--prometheus-instance PROM_INSTANCE
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Exporter Instance name, default value computed with
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hostname where the server is running. Use to set
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the instance label. (default: my-opnsense-prom-exporter-server)
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```
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You can setup env through `.env` file or environment variables with defined as default values
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(so command line will get the precedent):
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- **CHECK_FREQUENCY_SECONDS**: default value for `--check-frequency-seconds` param
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- **OPNSENSE_MAIN_HOST**: default value for `--main-host` param
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- **OPNSENSE_BACKUP_HOST**: default value for `--backup-host` param
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- **OPNSENSE_USERNAME**: default value for `--opnsense-user` param
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- **OPNSENSE_PASSWORD**: default value for `--opnsense-password` param
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- **OPNSENSE_INTERFACES**: default value for `--opnsense-interfaces` param
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## Roadmap
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- allow to change the listening port (today it force using `8000`)
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- allow to configure timeouts using environment variables
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- improves logging to get a debug mode to understand errors based on unexpected payloads
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## Changelog
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### Version 1.0.0 (UNRELEASED)
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- remove `opnsense_main_ha_state` and `opnsense_backup_ha_state`
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metrics marked as deprecated on version 0.5.0 and replace
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by `opnsense_server_ha_state` and `role` label
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- allow empty string interfaces to **not** call diagnostic
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traffic REST API
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### Version 0.5.1 (2023-09-04)
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- FIX `opnsense_server_ha_state` calls were not
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implemented
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### Version 0.5.0 (2023-09-04)
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- add role label in metrics
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- all to configure supervised interfaces using `--opnsense-interfaces`
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- replace `active_server_bytes_received` and
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`active_server_bytes_transmitted` by
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`opnsense_active_server_traffic_rate`
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- add `opnsense_server_ha_state` and mark `opnsense_main_ha_state`
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and `opnsense_backup_ha_state` as deprecated.
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### Version 0.4.0 (2023-09-02)
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- Higher timeout while getting WAN traffic info
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### Version 0.3.0 (2023-09-02)
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- Use proper method to compute WAN traffic
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### Version 0.2.0 (2023-09-01)
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- Setup automatic release from gitlab while pushing new tag
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### Version 0.1.0 (2023-09-01)
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- Initial version
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