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docs: Updated Fast-Ping-Check documentation for distributed pollers (#10575) 

* docs: Updated Fast-Ping-Check documentation for distributed pollers

* Update some wording

* Update Fast-Ping-Check.md

* Update Fast-Ping-Check.md
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garysteers 2019-09-04 02:04:57 +01:00 committed by Tony Murray
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doc/Extensions/Fast-Ping-Check.md
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@ -33,6 +33,8 @@ to run ping checks as quickly as possible without increasing snmp load on your d
* * * * * librenms /opt/librenms/ping.php >> /dev/null 2>&1
```
> **NOTE**: If you are using distributed pollers you can restrict a poller to a group by appending `-g` to the cron entry. Alternatively, you should only run ping.php on a single node.
#### Sub minute ping check
Cron only has a resolution of one minute, so we have to use a trick to allow sub minute checks.