ExternalDNS Operator creates the operands enforcing empty defaultMode for volumes which conflicts with the defaulting made by OpenShift. This provokes the unnecessary reconciliations.

1.0

1. Install ExternalDNSOperator
2. Create ExternalDNS CR for any provider
3.1. See the update events for the operand deployment in external-dns-operator namespace
3.2. Try to edit the operand deployment in external-dns-operator namespace to add an additional container 

- Continuous update events on the operand deployment
- Failure to update the deployment

- Operand deployment should not be updated constantly
- Operand deployment should accept extra containers