Allow replica count to be set to zero #4784
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cncf-cla: yes
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k8s-ci-robot
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You may need to add some validation as well. Not sure if external DNS supports HA mode werry well. Having 2+ replicas may throttle DNS API as at the moment there is no leader election. |
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The problem is described here a bit #2430. Had a DNS outage once due to this behaviour. |
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Description
Allows the replica count for external-dns deployments to be configurable as zero. external-dns helm installs can be done in secondary regions with zero replicas waiting to be scaled up during a failover event. See #4783
The helm chart values.yaml was commented to reflect that external-dns does not support more than one replica.
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