Filter

All exporters support a name[] URL parameter for querying only specific metric names. Examples:

• /metrics?name[]=jvm_threads_current will query the metric named jvm_threads_current.
• /metrics?name[]=jvm_threads_current&name[]=jvm_threads_daemon will query two metrics, jvm_threads_current and jvm_threads_daemon.

Add the following to the scape job configuration in prometheus.yml to make the Prometheus server send the name[] parameter:

params:
  name[]:
    - jvm_threads_current
    - jvm_threads_daemon

For safety, exporters limit the query string to 65,536 characters and accept at most 1,024 query parameters. The parameter limit counts every &-separated pair, including repeated parameters and empty pairs. These are fixed implementation limits and cannot be changed through runtime configuration.

If a request exceeds either limit or contains invalid percent-encoding, the /metrics endpoint returns HTTP 400 Bad Request with the plain-text response Invalid query parameters.