Cannot mount NFSv3 filesystems once `systemctl isolate` command has been issued

Solution Verified - Updated -


After running systemctl isolate [ | ] on a host being a NFS server:

  • NFS clients mount of NFSv3 filesystems fails with error mount.nfs: Connection timed out
  • Showing mount information fails with error clnt_create: RPC: Port mapper failure - Unable to receive: errno 111 (Connection refused)


  • Red Hat Enterprise Linux (RHEL) 7

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