sensu-plugins-ntp

Functionality

Provides plugins for checking and measuring Network Time Protocol (NTP)
servers.

Usage

check-ntp.rb

Check the synchronization state of the local NTP server.

parameters:

• warn: Maximum offset in ms for warning state (default: 10)
• crit: Maximum offset in ms for critical state (default: 100)
• stratum: Maximum stratum value (default: 15)
• unsynced_status: Default status when unsynced (default: UNKNOWN)

metrics-ntpdate.rb

Get metrics from ntpdate.

parameters:

• server: Comma separated list of NTP server(s) to measure (default:
  localhost)
• scheme: Prefix for metrics (default: hostname)

values:

• offset: Time difference between server and source (unit: ms)
• delay: Roundtrip time from server to source (unit: ms)

metrics-ntpstats.rb

Get metrics from ntpstats.

parameters:

• host: Target host (default: localhost)
• scheme: Prefix for metrics (default: hostname)

values:

Descriptions taken from https://www.eecis.udel.edu/~mills/ntp/html/ntpq.html.

• clk_jitter: Clock jitter
• clk_wander: Clock frequency wander
• frequency: Frequency offset relative to hardware clock
• mintc: Minimum time constant
• offset: Combined offset of server relative to this host
• stratum: Stratum
• sys_jitter: Combined system jitter
• tc: Time constant and poll exponent

Installation

sensu-install --plugin sensu-plugins-ntp