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ntpd

Module monitors the system variables of the local ntpd daemon (optional incl. variables of the polled peers) using the NTP Control Message Protocol via UDP socket, similar to ntpq, the standard NTP query program.

Requirements:

  • Version: NTPv4
  • Local interrogation allowed in /etc/ntp.conf (default):
# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::1

It produces:

  1. system
  • offset
  • jitter
  • frequency
  • delay
  • dispersion
  • stratum
  • tc
  • precision
  1. peers
  • offset
  • delay
  • dispersion
  • jitter
  • rootdelay
  • rootdispersion
  • stratum
  • hmode
  • pmode
  • hpoll
  • ppoll
  • precision

configuration

Sample:

update_every: 10

host: 'localhost'
port: '123'
show_peers: yes
# hide peers with source address in ranges 127.0.0.0/8 and 192.168.0.0/16
peer_filter: '(127\..*)|(192\.168\..*)'
# check for new/changed peers every 60 updates
peer_rescan: 60

Sample (multiple jobs):

Note: ntp.conf on the host otherhost must be configured to allow queries from our local host by including a line like restrict <IP> nomodify notrap nopeer.

local:
    host: 'localhost'

otherhost:
    host: 'otherhost'

If no configuration is given, module will attempt to connect to ntpd on ::1:123 or 127.0.0.1:123 and show charts for the systemvars. Use show_peers: yes to also show the charts for configured peers. Local peers in the range 127.0.0.0/8 are hidden by default, use peer_filter: '' to show all peers.

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