Problem with CentOS/RHEL 7 Recovery VM Booting into Emergency Mode
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An administrator may experience after a Failover or Move that a Recovery VM running RHEL/CentOS 7 is booting into Emergency Mode rather than finding the OS and awaiting for login.
This is a known issue of CentOS 7 / Redhat 7.
For reference, kindly see the below CentOS forum link:
CentOS 7 / Redhat 7 recovery VM boots into Emergency Mode/Shell and thus login is not possible, rendring the VM as unusable.
To resolve the issue, perform the below Steps on the affected recovery VM:
Restart recovery VM and choose rescue mode in Grub.
Run command dracut -f and reboot the VM.
Note: If the VM has multiple initramfs, run dracut -fv --regenerate-all alternatively.