Nagios Monitoring ERROR/BUG

[slansing]

Is the address of the server changing? Perhaps a low DHCP lease time? Alternatively, are you sure the nrpe daemon is starting properly, and that your firewall is not being reset, or changing upon system start? Looks like it is just having routing issues to port 5666 on that address.

[rmuhammadali]

Dear,
Static IPs used rather then DHCP.
Firewall is disabled.
NRPE is running fine.

Anyother suggestions?

[tmcdonald]

How long are you waiting after the system is brought down, and between checks? If you run "shutdown -h now" on the machine and test immediately after, you might get a timeout as the machine is still on but no services are running. Then the next check might be done after the machine really is down, showing the second error of no route.

[tgriep]

What version of Nagios Core are you running?

Can you run this command on the Nagios Core server and post the output so we can get the version of the check_nrpe plugin?

Code: Select all

/usr/local/nagios/libexec/check_nrpe

[rmuhammadali]

Dear,
I am using Nagios 4.0.4 and nrpe 2.15

How long are you waiting after the system is brought down, and between checks? If you run "shutdown -h now" on the machine and test immediately after, you might get a timeout as the machine is still on but no services are running. Then the next check might be done after the machine really is down, showing the second error of no route.

i know this situation, but my problem is something else.

[rmuhammadali]

Any Suggestions?

[abrist]

Are these 2 boxes on the same subnet?
Can you add -vvv to your swap check?

[rmuhammadali]

Yes dear both boxes are on same network subnet

[tmcdonald]

Can you add the -vvv switch to the check as abrist suggested? We would like to see the verbose output.

[rmuhammadali]

On Client (When its up)

Code: Select all

./check_swap -w 40% -c 20% -vvv
Reading PROC_MEMINFO at /proc/meminfo
Got Total with 1228792.000000
Got Free with 1228792.000000
SWAP OK - 100% free (1199 MB out of 1199 MB) |swap=1199MB;479;239;0;1199

After changing in /usr/local/nagios/etc/nrpe.cfg of Client

Code: Select all

command[check_swap]=/usr/local/nagios/libexec/check_swap -w 40% -c 20% -vvv

On Server (When client is up)

Code: Select all

./check_nrpe -H 192.168.2.5  -c check_swap
Reading PROC_MEMINFO at /proc/meminfo
Got Total with 1228792.000000
Got Free with 1228792.000000
SWAP OK - 100% free (1199 MB out of 1199 MB) |swap=1199MB;479;239;0;1199

On Server (When client is down)

Code: Select all

 ./check_nrpe -H 192.168.2.5  -c check_swap
connect to address 192.168.2.5 port 5666: No route to host
connect to host 192.168.2.5 port 5666: No route to host

On Nagios (When client is down)