Email Alerts Coming even if a service is live ?

[rkennedy]

I understand, but pro-active firewalls will block on the fly like this. The same goes for the switch. Do you have any fire walls running, or anti-virus software that you can look at?

I know some anti-virus will include 'network intrusion' which has blocked this in the past.

[soamz]

I understand, but pro-active firewalls will block on the fly like this. The same goes for the switch. Do you have any fire walls running, or anti-virus software that you can look at?

I know some anti-virus will include 'network intrusion' which has blocked this in the past.

Firewall - no.
The switch has no firewall rules actually.

[rkennedy]

Do any client systems have firewalls, or antivirus? The fact that the pings work sometimes, and not other times really makes me believe this isn't a Nagios issue.

As @Box293 mentioned, if you can leave a ping running for a few hours it might help to see where it captures. You could also run a traceroute to see where it's getting held up.

[Box293]

Are you using Mod-Gearman ? If you are, and have remote workers, then it's possible that they are the ones with the problem, not the Nagios server.

[soamz]

Are you using Mod-Gearman ? If you are, and have remote workers, then it's possible that they are the ones with the problem, not the Nagios server.

The server itself doesnt ping, its not a nagios problem.

See the video,
https://youtu.be/UZWhlsRDV1E

[soamz]

Do any client systems have firewalls, or antivirus? The fact that the pings work sometimes, and not other times really makes me believe this isn't a Nagios issue.

As @Box293 mentioned, if you can leave a ping running for a few hours it might help to see where it captures. You could also run a traceroute to see where it's getting held up.

Already tried changing 3 switches, same issue.
You can see the video.

See the video,
https://youtu.be/UZWhlsRDV1E

You can see how 10.10.11.2 and 10.10.11.27 was not pinging, I refresh device ping instantly worked.

If I keep the ping on, then the device doesnt stop.

But I stop the ping and then try again after 5 mins, the device doesnt ping anymore.

[ssax]

This is not likely related to the nagios server.

What are those devices that you are changing configs on?

The likely causes are:

1. A firewall / IPS device that is blocking it. If there are any of these devices in the path then validate their logs to see what show.
2. A routing issue (are you using EIGRP/OSPF/BGP, etc? Asymmetric routing?) - Can you run a tcpdump on the remote device or on the switch to see if the packets are even getting there?
3. Are these devices behind a VPN connection? I've seen the same type of behavior with VPN tunnel issues because of settings (1 tunnel per host vs 1 tunnel per subnet).
4. An issue with some other device in the path.

Can you run a traceroute from the XI machine and see where it's dying at?

[soamz]

It dies right there, if you trace route.

I guess, I just have to change server, as he NIC seems faulty.

[hsmith]

I guess, I just have to change server, as he NIC seems faulty.

Give it a test, and let us know what happens!

[soamz]

I guess, I just have to change server, as he NIC seems faulty.

Give it a test, and let us know what happens!

ITS DONE!!!
Had to change all the 200+ devices IP to 10.10.12.xx
Now its amazing.

Is there a good flat UI theme for Nagios ?
And is there a way we can measure, traffic of each device and graphs in nagios of the hosts added ?

Right now, I use cacti and I dont like it, as Cacti is not showing accurate data as it polls in every 5 mins, very lame.

I like Nagios, all I need is a proper theme first, as the default one is very very basic

Need theme, graphs, traffic monitor for each host.