How to increase NRPE socket timeout??

[abrist]

Just to recap. You need to do 3 things:
1. Verify that service_check_timeout in the nagios.cfg on your nagios server is set high enough:
grep service_check_timeout /usr/local/nagios/etc/nagios.cfg
NOTE: Remember to restart nagios after any changes to nagios.cfg.
2. Add "-t" to the check_nrpe command on the nagios server:
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -t 30 -c $ARG1$
3. Verify that the command_timeout in the nrpe.cfg file on the remote host is configured to be long enough:

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grep command_timeout /usr/local/nagios/etc/nrpe.cfg

NOTE: Remember to restart the nrpe daemon on the remote host after changing any nrpe.cfg directive values.

Does the command run correctly with -t 30 from the cli?

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./check_nrpe -H <host> -t 30 -c check_cassandra

[xpac]

Here's a snapshot:

[abrist]

Here's a snapshot:

Looks ok.

Does the command run correctly with -t 30 from the cli?

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 ./check_nrpe -H <host> -t 30 -c check_cassandra

[xpac]

Just to recap. You need to do 3 things:
1. Verify that service_check_timeout in the nagios.cfg on your nagios server is set high enough:
grep service_check_timeout /usr/local/nagios/etc/nagios.cfg
NOTE: Remember to restart nagios after any changes to nagios.cfg.
2. Add "-t" to the check_nrpe command on the nagios server:
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -t 30 -c $ARG1$
3. Verify that the command_timeout in the nrpe.cfg file on the remote host is configured to be long enough:

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grep command_timeout /usr/local/nagios/etc/nrpe.cfg

NOTE: Remember to restart the nrpe daemon on the remote host after changing any nrpe.cfg directive values.

Does the command run correctly with -t 30 from the cli?

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./check_nrpe -H <host> -t 30 -c check_cassandra

1, 2, and 3 are all correct.

If I run the command with -t 30 from the cli, it does execute properly

[jdalrymple]

Your Nagios is straight up misbehaving.

Next thing that I personally would do is:

nagios.cfg:

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debug_level=-1
debug_verbosity=2
max_debug_file_size=20971520

Make sure you have 20MB of free disk space, restart Nagios then dig through debug to see why it's misbehaving.