You can login to a remote Linux server without entering password in 3 simple steps using ssky-keygen and ssh-copy-id as explained in this article.
The magical 3 commands are:
ssh-keygen …
check_by_ssh
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check_by_ssh,
Problem with Nagios check_by_ssh plugin is that it requires also the nagios-plugins to be installed on the client server. At least part of the nagios-plugins, because in …