As mentioned earlier, Nagios uses a separate check command that connects to a remote machine over SSH and runs the actual check command on it. The command has very powerful features and can be used to query a single service status by using active checks and can be used to perform and report multiple checks at once as passive checks.
The following is the syntax of the command:
check_by_ssh -H <host> -C <command> [-fqv] [-1|-2] [-4|-6] [-S [lines]] [-E [lines]] [-t timeout] [-i identity] [-l user] [-n name] [-s servicelist] [-O outputfile] [-p port] [-o ssh-option]
The following table describes all options accepted by the plugin. Items required are marked in bold:
|
Option |
Description |
|---|---|
|
-H, --hostname |
The host name or IP address of the machine to connect to; this option must be specified |
|
-C, --command |
The full path of the command to be executed on the remote host along with any additional arguments; this option must be specified |
|
-l, --logname... |