Overview 🔗︎

The Grep Filter plugin “greps” events by the values of specified fields.

Configuration 🔗︎

GrepConfig 🔗︎

Variable Name Type Required Default Description
regexp []RegexpSection No - Regexp Directive
exclude []ExcludeSection No - Exclude Directive
or []OrSection No - Or Directive
and []AndSection No - And Directive

Regexp Directive 🔗︎

Specify filtering rule. This directive contains two parameters. 🔗︎

Variable Name Type Required Default Description
key string Yes - Specify field name in the record to parse.
pattern string Yes - Pattern expression to evaluate

Example Regexp filter configurations 🔗︎

apiVersion: logging.banzaicloud.io/v1beta1
kind: Flow
metadata:
  name: demo-flow
spec:
  filters:
    - grep:
        regexp:
        - key: first
          pattern: /^5\d\d$/
  selectors: {}
  outputRefs:
    - demo-output

Fluentd Config Result 🔗︎

  <filter **>
    @type grep
    @id demo-flow_1_grep
    <regexp>
      key first
      pattern /^5\d\d$/
    </regexp>
  </filter>

Exclude Directive 🔗︎

Specify filtering rule to reject events. This directive contains two parameters 🔗︎

Variable Name Type Required Default Description
key string Yes - Specify field name in the record to parse.
pattern string Yes - Pattern expression to evaluate

Example Exclude filter configurations 🔗︎

apiVersion: logging.banzaicloud.io/v1beta1
kind: Flow
metadata:
  name: demo-flow
spec:
  filters:
    - grep:
        exclude:
        - key: first
          pattern: /^5\d\d$/
  selectors: {}
  outputRefs:
    - demo-output

Fluentd Config Result 🔗︎

  <filter **>
    @type grep
    @id demo-flow_0_grep
    <exclude>
      key first
      pattern /^5\d\d$/
    </exclude>
  </filter>

Or Directive 🔗︎

Specify filtering rule. This directive contains either regexp or exclude directive 🔗︎

Variable Name Type Required Default Description
regexp []RegexpSection No - Regexp Directive
exclude []ExcludeSection No - Exclude Directive

Example Or filter configurations 🔗︎

apiVersion: logging.banzaicloud.io/v1beta1
kind: Flow
metadata:
  name: demo-flow
spec:
  filters:
    - grep:
        or:
          - exclude:
            - key: first
              pattern: /^5\d\d$/
            - key: second
              pattern: /\.css$/

  selectors: {}
  outputRefs:
    - demo-output

Fluentd Config Result 🔗︎

    <or>
      <exclude>
        key first
        pattern /^5\d\d$/
      </exclude>
      <exclude>
        key second
        pattern /\.css$/
      </exclude>
    </or>

And Directive 🔗︎

Specify filtering rule. This directive contains either regexp or exclude directive 🔗︎

Variable Name Type Required Default Description
regexp []RegexpSection No - Regexp Directive
exclude []ExcludeSection No - Exclude Directive

Example And filter configurations 🔗︎

apiVersion: logging.banzaicloud.io/v1beta1
kind: Flow
metadata:
  name: demo-flow
spec:
  filters:
    - grep:
        and:
          - regexp:
            - key: first
              pattern: /^5\d\d$/
            - key: second
              pattern: /\.css$/

  selectors: {}
  outputRefs:
    - demo-output

Fluentd Config Result 🔗︎

    <and>
      <regexp>
        key first
        pattern /^5\d\d$/
      </regexp>
      <regexp>
        key second
        pattern /\.css$/
      </regexp>
    </and>