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Diffstat (limited to 'doc/administration/logs.md')
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diff --git a/doc/administration/logs.md b/doc/administration/logs.md index 263fe699529..0d7635405d6 100644 --- a/doc/administration/logs.md +++ b/doc/administration/logs.md @@ -20,6 +20,54 @@ including adjusting log retention, log forwarding, switching logs from JSON to plain text logging, and more. - [How to parse and analyze JSON logs](troubleshooting/log_parsing.md). +## Log Levels + +Each log message has an assigned log level that indicates its importance and verbosity. +Each logger has an assigned minimum log level. +A logger emits a log message only if its log level is equal to or above the minimum log level. + +The following log levels are supported: + +| Level | Name | +|:------|:----------| +| 0 | `DEBUG` | +| 1 | `INFO` | +| 2 | `WARN` | +| 3 | `ERROR` | +| 4 | `FATAL` | +| 5 | `UNKNOWN` | + +GitLab loggers emit all log messages because they are set to `DEBUG` by default. + +### Override default log level + +You can override the minimum log level for GitLab loggers using the `GITLAB_LOG_LEVEL` environment variable. +Valid values are either a value of `0` to `5`, or the name of the log level. + +Example: + +```shell +GITLAB_LOG_LEVEL=info +``` + +For some services, other log levels are in place that are not affected by this setting. +Some of these services have their own environment variables to override the log level. For example: + +| Service | Log level | Environment variable | +|:---------------------|:----------|:---------------------| +| GitLab API | `INFO` | | +| GitLab Cleanup | `INFO` | `DEBUG` | +| GitLab Doctor | `INFO` | `VERBOSE` | +| GitLab Export | `INFO` | `EXPORT_DEBUG` | +| GitLab Geo | `INFO` | | +| GitLab Import | `INFO` | `IMPORT_DEBUG` | +| GitLab QA Runtime | `ERROR` | `QA_DEBUG` | +| Google APIs | `INFO` | | +| Rack Timeout | `ERROR` | | +| Sidekiq (server) | `INFO` | | +| Snowplow Tracker | `FATAL` | | +| gRPC Client (Gitaly) | `WARN` | `GRPC_LOG_LEVEL` | + ## Log Rotation The logs for a given service may be managed and rotated by: @@ -36,26 +84,26 @@ are written to a file called `current`. The `logrotate` service built into GitLa [manages all logs](https://docs.gitlab.com/omnibus/settings/logs.html#logrotate) except those captured by `runit`. -| Log type | Managed by logrotate | Managed by svlogd/runit | -|-------------------------------------------------|------------------------|-------------------------| -| [Alertmanager Logs](#alertmanager-logs) | **{dotted-circle}** No | **{check-circle}** Yes | -| [Crond Logs](#crond-logs) | **{dotted-circle}** No | **{check-circle}** Yes | -| [Gitaly](#gitaly-logs) | **{check-circle}** Yes | **{check-circle}** Yes | -| [GitLab Exporter for Omnibus](#gitlab-exporter) | **{dotted-circle}** No | **{check-circle}** Yes | -| [GitLab Pages Logs](#pages-logs) | **{check-circle}** Yes | **{check-circle}** Yes | -| GitLab Rails | **{check-circle}** Yes | **{dotted-circle}** No | -| [GitLab Shell Logs](#gitlab-shelllog) | **{check-circle}** Yes | **{dotted-circle}** No | -| [Grafana Logs](#grafana-logs) | **{dotted-circle}** No | **{check-circle}** Yes | -| [LogRotate Logs](#logrotate-logs) | **{dotted-circle}** No | **{check-circle}** Yes | -| [Mailroom](#mail_room_jsonlog-default) | **{check-circle}** Yes | **{check-circle}** Yes | -| [NGINX](#nginx-logs) | **{check-circle}** Yes | **{check-circle}** Yes | -| [PostgreSQL Logs](#postgresql-logs) | **{dotted-circle}** No | **{check-circle}** Yes | -| [Praefect Logs](#praefect-logs) | **{dotted-circle}** Yes| **{check-circle}** Yes | -| [Prometheus Logs](#prometheus-logs) | **{dotted-circle}** No | **{check-circle}** Yes | -| [Puma](#puma-logs) | **{check-circle}** Yes | **{check-circle}** Yes | -| [Redis Logs](#redis-logs) | **{dotted-circle}** No | **{check-circle}** Yes | -| [Registry Logs](#registry-logs) | **{dotted-circle}** No | **{check-circle}** Yes | -| [Workhorse Logs](#workhorse-logs) | **{check-circle}** Yes | **{check-circle}** Yes | +| Log type | Managed by logrotate | Managed by svlogd/runit | +|:------------------------------------------------|:------------------------|:------------------------| +| [Alertmanager Logs](#alertmanager-logs) | **{dotted-circle}** No | **{check-circle}** Yes | +| [Crond Logs](#crond-logs) | **{dotted-circle}** No | **{check-circle}** Yes | +| [Gitaly](#gitaly-logs) | **{check-circle}** Yes | **{check-circle}** Yes | +| [GitLab Exporter for Omnibus](#gitlab-exporter) | **{dotted-circle}** No | **{check-circle}** Yes | +| [GitLab Pages Logs](#pages-logs) | **{check-circle}** Yes | **{check-circle}** Yes | +| GitLab Rails | **{check-circle}** Yes | **{dotted-circle}** No | +| [GitLab Shell Logs](#gitlab-shelllog) | **{check-circle}** Yes | **{dotted-circle}** No | +| [Grafana Logs](#grafana-logs) | **{dotted-circle}** No | **{check-circle}** Yes | +| [LogRotate Logs](#logrotate-logs) | **{dotted-circle}** No | **{check-circle}** Yes | +| [Mailroom](#mail_room_jsonlog-default) | **{check-circle}** Yes | **{check-circle}** Yes | +| [NGINX](#nginx-logs) | **{check-circle}** Yes | **{check-circle}** Yes | +| [PostgreSQL Logs](#postgresql-logs) | **{dotted-circle}** No | **{check-circle}** Yes | +| [Praefect Logs](#praefect-logs) | **{dotted-circle}** Yes | **{check-circle}** Yes | +| [Prometheus Logs](#prometheus-logs) | **{dotted-circle}** No | **{check-circle}** Yes | +| [Puma](#puma-logs) | **{check-circle}** Yes | **{check-circle}** Yes | +| [Redis Logs](#redis-logs) | **{dotted-circle}** No | **{check-circle}** Yes | +| [Registry Logs](#registry-logs) | **{dotted-circle}** No | **{check-circle}** Yes | +| [Workhorse Logs](#workhorse-logs) | **{check-circle}** Yes | **{check-circle}** Yes | ## `production_json.log` |