Goals

Make logging 'hostname' field unique in a multi-cluster setting by adding the cluster base domain: {{oc get dns.config.openshift.io/cluster -o jsonpath='

{.spec.baseDomain}'}}

Note this fully-qualified name is not resolvable, but it is a valid fully-qualified DNS name, and as unique as the base domain name of the cluster - internet unique if the cluster is in a valid internet domain.

This feature is opt-in via a new ClusterLogForwarder field: pipeline.qualifyHostname: true

h1. Non-Goals

Host name is not resolvable or routable, only unique.

h1. Motivation

Many existing applications rely on hostnames DNS names as unique identifiers. In a multi-cluster setting, hostnames may be re-used in separate clusters. Adding the cluster's base-domain restores uniqueness.

h1. Alternatives

Use the separate cluster-id field. This is feasible but requires modification of existing apps that assume host names are unique.

h1. Acceptance Criteria

Tests for adding domain.

h1. Risk and Assumptions

Assumes {{oc get dns.config.openshift.io/cluster -o jsonpath='{.spec.baseDomain}

'}}

is a valid DNS domain.

Documentation Considerations

Requires documentation

Open Questions

None

Additional Notes

None