Chapter 2. Installation and Setup / 2.5. Configuring Time Synchronization | ||||
|---|---|---|---|---|
 | 2.4. Configuring Hostname Resolution | 2.6. Installing Heartbeat |  | |
Chapter 2. Installation and Setup / 2.5. Configuring Time Synchronization | ||||
|---|---|---|---|---|
| 2.4. Configuring Hostname Resolution | 2.6. Installing Heartbeat | | |
Heartbeat does not require that time be syncronized for each of the nodes in the cluster, however it is highly recommended if you ever plan to look at logfiles. To configure time synchronization, you need to configure Heartbeat nodes to synchronize to a time server outside the cluster. The cluster nodes will use the time server as their time synchronization source.
Time synchronization will not start unless the date and time on the cluster servers is already close. To manually set the date and time on cluster servers, use the date command at the command line of each cluster server to view, and if necessary change, the date and time for that server.
You must configure the nodes in the cluster to use the time server as their time source.
On a cluster server, start YaST, click , then click .
Choose to have the NTP daemon start during boot and then enter the IP address of the time server you configured.
Click and reboot this server to ensure the service starts correctly.
Repeat Step 1 through Step 3 on the other non-time server nodes in the cluster.
After rebooting all cluster nodes, time should be synchronized properly. To check if time synchronization is functioning properly, run the ntpq -p command on each cluster node. Running the ntpq -p command on a non-time server node will display the server that is being used as the time source.
