NTP sometimes stops syncing
by HTop from LinuxQuestions.org on (#5DCR6)
Hello,
We have a dozen CentOS 7.7 virtual machines on VMware Esxi 6.x hosts (with vCenter). They run with open-vm-tools.
All servers have the ntpd service running which synchronizes with a Windows domain controller (PDC).
I noticed that some of them have their time not sychronized.
Windows, Ubuntu or SuSE Linux machines do not experienced such problem.
The out-of-time servers have the ntpd service active (and the process is also running).
I notice is that the system log file, i.e. dmesg, gives me back the last ntp message is recorded several weeks ago. In working systems, ntpd message logging is daily.
ntp runs as /usr/sbin/ntpd -u ntp:ntp -g
/etc/ntp.conf contains:
include /etc/ntp/crypto/pw
restrict 127.0.0.1
keys /etc/ntp/keys
disable monitor
server pdc.bludomain.local iburst
pdc.bludomain.local is the Windows domain controller.
Ideas to make ntpd works?
We have a dozen CentOS 7.7 virtual machines on VMware Esxi 6.x hosts (with vCenter). They run with open-vm-tools.
All servers have the ntpd service running which synchronizes with a Windows domain controller (PDC).
I noticed that some of them have their time not sychronized.
Windows, Ubuntu or SuSE Linux machines do not experienced such problem.
The out-of-time servers have the ntpd service active (and the process is also running).
I notice is that the system log file, i.e. dmesg, gives me back the last ntp message is recorded several weeks ago. In working systems, ntpd message logging is daily.
ntp runs as /usr/sbin/ntpd -u ntp:ntp -g
/etc/ntp.conf contains:
include /etc/ntp/crypto/pw
restrict 127.0.0.1
keys /etc/ntp/keys
disable monitor
server pdc.bludomain.local iburst
pdc.bludomain.local is the Windows domain controller.
Ideas to make ntpd works?