[RHOCP 4] Application CrashLoopBackOff after upgrade from RHOCP v4.9 to v4.10

Solution Verified - Updated -

Issue

  • Application CrashLoopBackOff with the below error message after upgrading from RHOCP v4.9 to v4.10

    java.net.UnknownHostException: vault.example.com", "stackTrace": "o.s.v.a.VaultLoginException: Cannot login using org.springframework.web.client.ResourceAccessException: I/O error on POST request for \"https://vault.example.com:443/v1/auth/k8s/login\": vault.example.com; nested exception is java.net.UnknownHostException: vault.example.com\n\tat

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.10

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