Upgrade fails with "timed out waiting for the condition during syncRequiredMachineConfigPools"

Solution In Progress - Updated -

Issue

  • Upgrade fails with below error :
Unable to apply 4.2.9: timed out waiting for the condition during syncRequiredMachineConfigPools: pool master has not progressed to latest configuration: controller version mismatch for rendered-master-fcaded3e225365e329a440b8e5c58e20 expected
  • Logs shows :
```
error sending CSR to signer: certificatesigningrequests.certificates.k8s.io "system:etcd-server:etcd-1.apps.example.com" already exists

Environment

  • Openshift Container platform
    • 4.2.9

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