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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](http://doc.ntp.org/current-stable/ntpq.html).
**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
2. peers
* offset
* delay
* dispersion
* jitter
* rootdelay
* rootdispersion
* stratum
* hmode
* pmode
* hpoll
* ppoll
* precision
**configuration**
Sample:
```yaml
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`.
```yaml
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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