Installing CA Performance Center › Installation Considerations › Verify Time Synchronization

Verify Time Synchronization

Time synchronization using the network time protocol (NTP) daemon is required for CA Performance Center and is recommended for all data source consoles. On Linux servers, the NTP daemon ensures that the clocks on the hosts are synchronized for timing purposes. Verify that the daemon is running on the CA Performance Center host server.

Follow these steps:

1. Open a console and type the following command:

   $ chkconfig --list ntpd 
   

   If the NTP daemon is installed, the output resembles the following example:

   ntp 0:off 1:off 2:on 3:on 4:off 5:on 6:off
   

   The output indicates the runlevels where the daemon runs.

2. Verify that the current runlevel of the system (usually 3 or 5) has the NTP daemon set to 'on'. If you do not know the current runlevel, type the following commands to find it:

   $ runlevel
   N 3
   

   If the current runlevel does not have the NTP daemon enabled, enable it by typing the following command:

   $ chkconfig ntpd on
   

3. Type the following command to start the NTP daemon manually:

   $ /etc/init.d/ntpd start
   

   The daemon is started.