We have two VMWare environments running a bunch of (mainly) Redhat 5.9 and 6.4 guests. We are having issues with time drift (minutes ahead per week). We use ntp, syncing to the local domain controller.
This recommendation by VMWare specifically says not to use the vmware-tools for time synchronisation. Why? It seems like many people have issues with NTP, and the vmware-tools generally behaves in a predictable way. Are there any specific issues with vmware-tools on later versions of Redhat?
For context, this is our ntp.conf (all commented lines removed):
tinker panic 0 restrict default kod nomodify notrap nopeer noquery restrict -6 default kod nomodify notrap nopeer noquery restrict 127.0.0.1 restrict -6 ::1 server our.domain.server.com driftfile /var/lib/ntp/drift keys /etc/ntp/keys
Some of our guests have absolutely no problem keeping time. Others are out by a large margin.