Nagios Support Forum

What EXACTLY does error code 255 mean?

It's possible but I should expect to see failures at the same time when I run it from the command line.

define command {
command_name check_xi_by_ssh
command_line $USER1$/check_by_ssh -H $HOSTADDRESS$ -l $ARG1$ -C $ARG2$ $ARGS3$
}

What exactly does "Return code of 255 for check of service" mean? Here are some of the messages from the log. Please note that this is from a small time period and not representative of all systems and all services where we are seeing this issue. [1393574903] Warning: Return code of 255 fo...

Yes.

The error I get does not seem to reflect a time out. Additionally, as mentioned in my last post, I tried increasing the timeout.

Yes, every time I run the service check from the command line using check_by _ssh it works. It is only when it is run automatically that it does not run. It will run often, but not all of the time. Changing the time out had no effect. Here is the configuration. ######################################...

As noted previously, it works EVERY time.

I am having problems with the following message being received from check_by_ssh to remote Linux systems. (Return code of 255 is out of bounds) This is an intermittent problem that occurs with a number of hosts but not all of them and only from time to time. Running the full check from the command l...