cannot find program: hostname

[dxi1]

Command lines work, but not in the nagios GUI: I am getting error: SSL_CERT UNKNOWN xxxxxxxx: cannot find program: hostname

I have tried V2.52.0 and V2.49.0, same issue. I only copy the script check_ssl_cert onto /usr/lib64/nagios/plugins/ folder and made it executable. It is on Oracle Linux 8. bind-utils, nmap, and bc are installed. nagios was installed rpm and it is on 4.4.6. Also:

$ sudo command -v hostname
/bin/hostname

Lots of other checks are working though, including check_http, check_smtp for TLS.

Any ideas?

[matteocorti]

It's strange. I just committed a new version which prints out the $PATH used by the script in debug mode.

You can then configure the plugin with --debug-file /tmp/check_ssl_cert.debug and check the line beginning with

[DBG] PATH:

Something like

[DBG] PATH: /Users/corti/perl5/perlbrew/bin:/Users/corti/perl5/perlbrew/perls/perl-5.36.0/bin:/opt/local/bin:/opt/local/sbin:/usr/local/opt/ruby/bin:/usr/local/lib/ruby/gems/2.6.0/bin/:/Users/corti/.cabal/bin:/opt/local/bin:/opt/local/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/Users/corti/bin:/opt/homebrew/bin

There should also be a line printing the hostname binary:

[DBG] hostname: /bin/hostname

But I suppose that in your case it will be empty

[dxi1]

Thank you Matteo. I just found out that it was a SELinux issue. I created a custom policy and it is working fine now. It is a great plugin, and thank you for the super job on that.

…

On Tue, Oct 18, 2022 at 10:13 AM Matteo Corti ***@***.***> wrote: It's strange. I just committed a new version which prints out the $PATH used by the script in debug mode. You can then configure the plugin with --debug-file /tmp/check_ssl_cert.debug and check the line beginning with [DBG] PATH: Something like [DBG] PATH: /Users/corti/perl5/perlbrew/bin:/Users/corti/perl5/perlbrew/perls/perl-5.36.0/bin:/opt/local/bin:/opt/local/sbin:/usr/local/opt/ruby/bin:/usr/local/lib/ruby/gems/2.6.0/bin/:/Users/corti/.cabal/bin:/opt/local/bin:/opt/local/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/Users/corti/bin:/opt/homebrew/bin There should also be a line printing the hostname binary: [DBG] hostname: /bin/hostname But I suppose that in your case it will be empty — Reply to this email directly, view it on GitHub <#419 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABN3Y4C755SLYWLUNYCVT3DWD2V7PANCNFSM6AAAAAARHOHL5A> . You are receiving this because you authored the thread.Message ID: ***@***.*** com>