OP#672 add monitoring for the puppetserver

README.md

@@ -11,6 +11,7 @@
     - [Puppet server and agent](#puppet-server-and-agent)
     - [Firewall](#firewall)
     - [Directories, Files and Services](#directories-files-and-services)
+    - [Nagios monitoring](#nagios-monitoring)
     - [Optional](#optional)
       - [R10k service](#r10k-service)
       - [R10k Web hook](#r10k-web-hook)
@@ -60,6 +61,23 @@ This module is also designed to work with [Foreman][def]  as External Node Class
   permissions and selinux context
 - start services as required
 
+### Nagios monitoring
+
+When `$pt_manage_nagios` is `true`, the module exports a Puppet agent check on
+every node and a Puppet Server check on the Puppet Server node. The target
+Nagios installation must provide the NRPE command alias used by the export.
+The Puppet Server check can use the standard `check_procs` plugin:
+
+```ini
+command[check_puppet_server]=/usr/lib64/nagios/plugins/check_procs -c $ARG1$ -a $ARG2$
+```
+
+With the exported command, `check_puppet_server!1:!puppetserver` alerts when no
+running process has `puppetserver` in its full command line. It does not check
+whether the systemd service is enabled.
+
+The modules `confdroid_nagios` and `confdroid_nrpe` include the proper commands already.
+
 ### Optional
 
 #### R10k service