67 lines
2.3 KiB
Markdown
67 lines
2.3 KiB
Markdown
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# Health Check
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>**Note:** This feature was [introduced][ce-3888] in GitLab 8.8.
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GitLab provides a health check endpoint for uptime monitoring on the `health_check` web
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endpoint. The health check reports on the overall system status based on the status of
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the database connection, the state of the database migrations, and the ability to write
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and access the cache. This endpoint can be provided to uptime monitoring services like
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[Pingdom][pingdom], [Nagios][nagios-health], and [NewRelic][newrelic-health].
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## Access Token
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An access token needs to be provided while accessing the health check endpoint. The current
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accepted token can be found on the `admin/health_check` page of your GitLab instance.
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The access token can be passed as a URL parameter:
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```
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https://gitlab.example.com/health_check.json?token=ACCESS_TOKEN
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```
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or as an HTTP header:
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```bash
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curl -H "TOKEN: ACCESS_TOKEN" https://gitlab.example.com/health_check.json
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```
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## Using the Endpoint
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Once you have the access token, health information can be retrieved as plain text, JSON,
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or XML using the `health_check` endpoint:
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- `https://gitlab.example.com/health_check?token=ACCESS_TOKEN`
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- `https://gitlab.example.com/health_check.json?token=ACCESS_TOKEN`
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- `https://gitlab.example.com/health_check.xml?token=ACCESS_TOKEN`
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You can also ask for the status of specific services:
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- `https://gitlab.example.com/health_check/cache.json?token=ACCESS_TOKEN`
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- `https://gitlab.example.com/health_check/database.json?token=ACCESS_TOKEN`
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- `https://gitlab.example.com/health_check/migrations.json?token=ACCESS_TOKEN`
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For example, the JSON output of the following health check:
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```bash
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curl -H "TOKEN: ACCESS_TOKEN" https://gitlab.example.com/health_check.json
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```
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would be like:
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```
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{"healthy":true,"message":"success"}
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```
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## Status
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On failure, the endpoint will return a `500` HTTP status code. On success, the endpoint
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will return a valid successful HTTP status code, and a `success` message. Ideally your
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uptime monitoring should look for the success message.
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[ce-3888]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/3888
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[pingdom]: https://www.pingdom.com
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[nagios-health]: https://nagios-plugins.org/doc/man/check_http.html
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[newrelic-health]: https://docs.newrelic.com/docs/alerts/alert-policies/downtime-alerts/availability-monitoring
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