About Omneon MediaGrid - Harmonic Inc

Troubleshooting
The two most important subcommands to the ntpdate command are the -q (for query) and the -u (for
update). A time source can be queried to determine what the delta time is between the source being
queried and current time on the computer where the command is being run.
ntpdate query example:
[root@CDL1 ~]# ntpdate -q 10.35.99.210
server 10.35.99.210, stratum 2, offset -110.121850, delay 0.02573
20 Jan 11:27:16 ntpdate[32306]: step time server 10.35.99.210 offset -110.121850
sec
Synchronizing times on ContentDirectors is straight forward operation using a simple command.
However, when the “omcld” service is restarted, if the ntp.conf file in the /etc directory is not
properly configured for all ContentDirectors in the cluster, it is likely that one or more of the
ContentDirectors will not start properly. The following examples show how to manually update time
on a ContentDirector by synchronizing the time from one ContentDirector to another.
ntpdate update example:
[root@CDL1 ~]# ntpdate -u 10.35.134.201
20 Jan 10:19:37 ntpdate[29958]: step time server 10.35.99.100 offset
224239754.222613 sec
Note that because the “ntpdate -u XXX” command forces a jump in the system clock, it could also
potentially cause problems for DHCPD and authentication. The primary way to avoid such problems
is to have NTP configured properly, and have stable NTP servers that keep accurate time. In addition,
when running the ntpdate command, ideally the affected services should not be running on the
ContentDirector. This should minimize potential clock jumps if the ntpdate command is run against
an active Content Director. The following procedure shows the recommended order of events:
1. # service omcld stop
2. # service dhcpd stop
3. # ntpdate -u XXX (where "XXX" is IP address of running ContentDirector)
4. # service dhcpd start
5. # service omcld start
ntpdate syslog message:
[root@CDL1 log]# less /var/log/messages
Jan 20 11:47:18 CDL1 ntpd[3008]: time reset -0.553542 s
Jan 20 11:51:35 CDL1 ntpd[3008]: synchronized to LOCAL(0), stratum 10
Jan 20 11:52:40 CDL1 ntpd[3008]: synchronized to 10.35.135.201, stratum 11
Possible error message:
'mdscore dead but pid file exists'
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