Strange ping problems
Posted: Wed Jun 19, 2019 1:10 pm
RHEL 7.5, XI 5.6.2
Several days ago, I had two host checks go critical, when the hosts were up. I discovered that the IP of the host in the system contained a prepended 0 in the third octet, like so: 10.100.02.100. This had worked for several years up until this point. Even more strange, this is what the host status detail page says:
I ran the "Ping this host" and it returned "Ping output" and a blank box below. No error, and a link that says Ping another host. I removed the 0 from the third octet and it worked. I changed it and moved on.
Today the same thing happened, but I was able to find a host that still worked in this configuration.
Address: 10.100.07.100 - Host up. I ran the Ping this host:
There is no apply or changes before the check goes critical. I am unsure as to what is happening here, or even where to start looking. Any advice?
Several days ago, I had two host checks go critical, when the hosts were up. I discovered that the IP of the host in the system contained a prepended 0 in the third octet, like so: 10.100.02.100. This had worked for several years up until this point. Even more strange, this is what the host status detail page says:
Code: Select all
check_ping: Invalid hostname/address - 10.100.09.100
Usage:
check_ping -H -w ,% -c ,%
[-p packets] [-t timeout] [-4Today the same thing happened, but I was able to find a host that still worked in this configuration.
Address: 10.100.07.100 - Host up. I ran the Ping this host:
Code: Select all
PING 10.100.07.100 (10.100.7.100) 56(84) bytes of data.
64 bytes from 10.100.7.100: icmp_seq=1 ttl=58 time=46.5 ms
64 bytes from 10.100.7.100: icmp_seq=2 ttl=58 time=32.1 ms
64 bytes from 10.100.7.100: icmp_seq=3 ttl=58 time=32.1 ms
64 bytes from 10.100.7.100: icmp_seq=4 ttl=58 time=32.1 ms
64 bytes from 10.100.7.100: icmp_seq=5 ttl=58 time=74.0 ms
--- 10.100.07.100 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4005ms
rtt min/avg/max/mdev = 32.137/43.419/74.078/16.315 ms