Error happened randomly after two weeks of using the nmstate operator. After a couple attempts to-recreate, same error was cropping up.

I deleted the operand, uninstalled the operator, re-installed operator and created the operand. The error went away after doing that. Sounds like a bug to me.

    

OCP 4.16.8
    

I dont really know, it just happened after two weeks of use.
    

    1. Install NMstate operator
    2. Create operand
    3. Create NNCP to create OVS bridge 
    4. Create NNCP to create OVS bridge mapping
    5. Create NNCP to create OVS bridge 
    6. Create NNCP to create OVS bridge mapping
    7. Create NNCP to create OVS bridge 
    8. Create NNCP to create OVS bridge mapping
    9. Create NNCP to create OVS bridge 
    10. Create NNCP to create OVS bridge mapping
    11. Repeat 3-9 couple more times over two weeks


    

Eventually the NNCP fails to create with this error:

An error occurred
Error "failed calling webhook "nodenetworkconfigurationpolicies-mutate.nmstate.io": failed to call webhook: Post "https://nmstate-webhook.openshift-nmstate.svc:443/nodenetworkconfigurationpolicies-mutate?timeout=10s": tls: failed to verify certificate: x509: certificate signed by unknown authority" for field "undefined".
    

NNCP to create NNCE and lay down the desired state from nmstate