Potential issues running with RHEL 7.4 or CentOS 7.4


We have had reports of customers experiencing the following issues when running with RHEL 7.4 or CentOS 7.4 (which are currently unsupported):

  • Zeneventserver times out and/or crashes

  • Deletion of files takes a very long time from the /opt/serviced/var/volumes/<instanced id>/zeneventserver/index directory


While we are still investigating the root cause, there may be a defect with file locking when using NFS 4.1 with RHEL or CentOS 7.4. Customers using RHEL/CentOS 7.4 should force the use of NFS to 4.0, as we've seen positive results doing this to some affected users. To do this, follow these steps:

  • Find /etc/nfsmount.conf on each of their hosts
    • Find the following line
      # Defaultvers=4
    • Uncomment it and change it so that it looks like.
    • Save that file
  • Stop Resource Manager and serviced on all of their hosts where NFS is mounted
  • On each host, issue: systemctl restart nfs-server
  • Bring serviced back up and start resource manager
  • Once the nfs shares are remounted, verify that NFS mounts are using NFS version 4.0 by running: nfsstat -m on the delegates in the RM pool

    [root@delegate1 ~]# nfsstat -m
    /opt/serviced/var/volumes/afwdlj8lpc6n6fk3rojbfq7lt from

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