Commit 07ddbbb4 authored by Stan Hu's avatar Stan Hu
Browse files

Add docs on structured logging in GitLab

[ci skip]
parent 3ed3bd17bcf0
......@@ -9,6 +9,33 @@ documentation](http://docs.gitlab.com/ee/administration/audit_events.html)
System log files are typically plain text in a standard log file format.
This guide talks about how to read and use these system log files.
## `production_json.log`
This file lives in `/var/log/gitlab/gitlab-rails/production_json.log` for
Omnibus GitLab packages or in `/home/git/gitlab/log/production_json.log` for
installations from source. (When Gitlab is running in an environment
other than production, the corresponding logfile is shown here.)
It contains a structured log for Rails controller requests received from
GitLab, thanks to [Lograge](https://github.com/roidrage/lograge/). Note that
requests from the API [are not yet logged to this
file](https://gitlab.com/gitlab-org/gitlab-ce/issues/36189).
Each line contains a JSON line that can be ingested by Elasticsearch, Splunk, etc. For example:
```json
{"method":"GET","path":"/gitlab/gitlab-ce/issues/1234","format":"html","controller":"Projects::IssuesController","action":"show","status":200,"duration":229.03,"view":174.07,"db":13.24,"time":"2017-08-08T20:15:54.821Z","params":{"namespace_id":"gitlab","project_id":"gitlab-ce","id":"1234"},"remote_ip":"18.245.0.1","user_id":1,"username":"admin"}
```
In this example, you can see this was a GET request for a specific issue. Notice each line also contains performance data:
1. `duration`: the total time taken to retrieve the request
2. `view`: total time taken inside the Rails views
3. `db`: total time to retrieve data from the database
In addition, the log contains the IP address from which the request originated
(`remote_ip`) as well as the user's ID (`user_id`), and username (`username`).
## `production.log`
This file lives in `/var/log/gitlab/gitlab-rails/production.log` for
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment