6.12 Health Check of an NTP Server with check_ntp_peer
The plugin check_ntp_peer, which is included from plugin version 1.4.11, tests the quality of an NTP server. If you want to check the time deviation of a local server against an NTP server, you need to use the plugin check_ntp_time, described in 7.7.1 Checking the system time via NTP in page 177.
Several parameters characterize the quality: the offset describes the time difference from other NTP servers (the reference servers). Jitter is a measurement of the fluctuations in the packet delay to a remote reference server, and stratum specifies the topological distance from the next atomic clock. Stratum 0 is the atomic clock itself, stratum 1 refers to an NTP server directly connected to an atomic ...
Get Nagios, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
