Loki output plugin

Status : experimental plugin, unit tested and maintained.

This plugin is used to send logs to Loki.

Requirements

• Grafana + Loki (or cLoki)

Config using Local Loki

input {
  file {
    path => "/var/log/nginx/access.log"
  }
}

output {
  loki {
    host => localhost
    port => 3100
    path => "/api/prom/push"
  }
}

Hosted Grafana Example

input {
  file {
    path => "/var/log/*"
  }
}

output {
  loki {
    basic_auth_password => "some_very_secure_password_hash_here"
    basic_auth_user => "1234"
    host => "logs-us-west1.grafana.net"
    port => 80
    path => "/api/prom/push"
  }
}

Parameters:

• host: ip of the target HTTP server. Accepts string (single) or Array (multi-target).
• port: port of the target HTTP server. Same for all ips if Array.
• path: path to use in the HTTP request. Can reference log line properties (see interpolation).
• serializer: more doc at serializers. Default value to raw.
• format: params used by the raw serializer.
• ssl: enable SSL mode. More doc at ssl. Default : false
• proxy: use http proxy. More doc at http proxy. Default : none.
• basic_auth_user and basic_auth_password: user and password for HTTP Basic Auth required by server. Default: none.
• maxAge: maximum bulk cache age in milliseconds. Default 1000.
• maxSize: maximum bulk entries before flush. Default 5000.
• basic_auth_user: HTTP Basic Auth Username
• basic_auth_password: HTTP Basic Auth Password
• partition_id: Optional value for X-Scope-OrgID header