[bitnami/external-dns] Why bitnami chart allows to modify number of replicas for external dns when external dns does not support multiple replicas

[mzeeshan1]

Name and Version

bitnami/external-dns

What architecture are you using?

None

What steps will reproduce the bug?

Bitnami external chart allows to configure number of replicas for external dns when external dns does not support multiple replicas
ref: kubernetes-sigs/external-dns#2430
This impacts multiple things in chart

• Daemonset should not be there
• Pod Disruption Budget should not be enabled by default.
• Deployment strategy. It should be Recreate by default if I am not missing anything.

What do you see instead?

The chart allows to modify number of replicas for external DNS it also allows to deploy external DNS as a daemonset

[migruiz4]

Thank you for reporting this issue @mzeeshan1.

After some further investigation, looks like indeed external-dns does not officially support having multiple replicas, and doing so could lead to problems.

Because of that, I have submitted #26759, a new major release dropping support for Daemonset and multi-replica deployments. If in a future release external-dns adds support for multiple replicas, we will restore these features.