How to configure multiple NTP servers for a host

Solution

1. Follow these steps to configure multiple NTP servers for a host:

2. Log in to the Management Node and edit the zstack.properties configuration file to add the following parameters specifying the NTP server IP addresses:

   [root@localhost ~]# vim /usr/local/zstack/apache-tomcat/webapps/zstack/WEB-INF/classes/zstack.properties
   ...
   chrony.serverIp.0 = X.X.X.X
   chrony.serverIp.1 = X.X.X.X
   chrony.serverIp.2 = X.X.X.X       //X.X.X.X is the IP address of each NTP server

3. Restart the Management Node service to apply the configuration:

   [root@localhost ~]# zstack-ctl restart_node

4. Verify time synchronization. An asterisk (*) in the output indicates successful synchronization:

   [root@localhost ~]# chronyc sources -v