I ran /opt/librenms/ping.php with the -d option. The output below is when everything is running normally and nothing is down.
SQL[select `devices`.`device_id`, `hostname`, `status`, `status_reason`, `last_ping`, `last_ping_timetaken`, `max_depth` from `devices` left join `devices_attribs` on `devices`.`device_id` = `devices_attribs`.`device_id` and `devices_attribs`.`attrib_type` = ? where `disabled` = ? and (`devices_attribs`.`attrib_value` is null or `devices_attribs`.`attrib_value` != ?) order by `max_depth` asc ["override_icmp_disable",0,"true"] 15.55ms]
'fping' '-f' '-' '-e' '-t' '500' '-r' '2'
dbserver72.name.sanitized.net is alive (0.29 ms)
SQL[update `devices` set `last_ping` = ?, `last_ping_timetaken` = ? where `device_id` = ? ["2019-05-23 09:30:37","0.29",28] 1.28ms]
RRD[update /opt/librenms/rrd/dbserver72.name.sanitized.net/ping-perf.rrd N:0.29]
Recorded data for dbserver72.name.sanitized.net (tier 0)
esxi2.name.sanitized.net is alive (0.92 ms)
SQL[update `devices` set `last_ping` = ?, `last_ping_timetaken` = ? where `device_id` = ? ["2019-05-23 09:30:37","0.92",10] 11.56ms]
RRD[update /opt/librenms/rrd/esxi2.name.sanitized.net/ping-perf.rrd N:0.92]
Recorded data for esxi2.name.sanitized.net (tier 0)
192.168.1.1 is alive (3.02 ms)
SQL[update `devices` set `last_ping` = ?, `last_ping_timetaken` = ? where `device_id` = ? ["2019-05-23 09:30:37","3.02",46] 11.61ms]
RRD[update /opt/librenms/rrd/librenms.name.sanitized.net/ping-perf.rrd N:0.05]
Recorded data for librenms.name.sanitized.net (tier 0)
Pinged 23 devices in 0.70s
The beginning and end of the output is above. Not sure if you wanted the entire output or not, but I didn’t see anything that looked like an error.
I waited 1 minute after a polling cycle and shut a host down. Then, I ran ping.php again manually. ping.php -d output shows that one host is unreachable and it generates an event in the Eventlog. I have an alert based on that event and it works.
So it appears that ping.php is not being run on it’s own through the cron. When I run it manually, it works as I think it should. But it isn’t being activated through the cron for some reason.