Grafana Loki

Loki output plugin

Overview

Fluentd output plugin to ship logs to a Loki server. More info at https://grafana.com/docs/loki/latest/clients/fluentd/

Example: Store Nginx Access Logs in Grafana Loki with Logging Operator

Example output configurations

spec:
  loki:
    url: http://loki:3100
    buffer:
      timekey: 1m
      timekey_wait: 30s
      timekey_use_utc: true

Configuration

Output Config

url (string, optional)

The url of the Loki server to send logs to.

Default: https://logs-us-west1.grafana.net

username (*secret.Secret, optional)

Specify a username if the Loki server requires authentication. Secret

Default: -

password (*secret.Secret, optional)

Specify password if the Loki server requires authentication. Secret

Default: -

cert (*secret.Secret, optional)

TLS: parameters for presenting a client certificate Secret

Default: -

key (*secret.Secret, optional)

TLS: parameters for presenting a client certificate Secret

Default: -

ca_cert (*secret.Secret, optional)

TLS: CA certificate file for server certificate verification Secret

Default: -

insecure_tls (*bool, optional)

TLS: disable server certificate verification

Default: false

tenant (string, optional)

Loki is a multi-tenant log storage platform and all requests sent must include a tenant.

Default: -

labels (Label, optional)

Set of labels to include with every Loki stream.

Default: -

extra_labels (map[string]string, optional)

Set of extra labels to include with every Loki stream.

Default: -

line_format (string, optional)

Format to use when flattening the record to a log line: json, key_value (default: key_value)

Default: json

extract_kubernetes_labels (*bool, optional)

Extract kubernetes labels as loki labels

Default: false

remove_keys ([]string, optional)

Comma separated list of needless record keys to remove

Default: []

drop_single_key (*bool, optional)

If a record only has 1 key, then just set the log line to the value and discard the key.

Default: false

configure_kubernetes_labels (*bool, optional)

Configure Kubernetes metadata in a Prometheus like format

Default: false

include_thread_label (*bool, optional)

whether to include the fluentd_thread label when multiple threads are used for flushing.

Default: true

buffer (*Buffer, optional)

Buffer

Default: -

slow_flush_log_threshold (string, optional)

The threshold for chunk flush performance check. Parameter type is float, not time, default: 20.0 (seconds) If chunk flush takes longer time than this threshold, fluentd logs warning message and increases metric fluentd_output_status_slow_flush_count.

Default: -