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This is not the latest version of Linkerd!
This documentation is for an older version of Linkerd. You may want the Linkerd 2.12 (current) documentation instead.

Using a Custom Cluster Domain

For Kubernetes clusters that use custom cluster domain, Linkerd must be installed using the --cluster-domain option:

linkerd install --cluster-domain=example.org \
    --identity-trust-domain=example.org \
    | kubectl apply -f -

# The Linkerd Viz extension also requires a similar setting:
linkerd viz install --set clusterDomain=example.org | kubectl apply -f -

# And so does the Multicluster extension:
linkerd multicluster install --set identityTrustDomain=example.org | kubectl apply -f -

This ensures that all Linkerd handles all service discovery, routing, service profiles and traffic split resources using the example.org domain.