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1. Prerequisites

If you wish to install Checkmk over HTTPS the following prerequisites must be satisfied on your monitoring server — irrespective of your instances:

  • You must have a valid server certificate.

  • The apache module mod_ssl is installed and activated.

  • The server is reachable under HTTPS.

  • The Rewrite-Module for the webserver is available and loaded.

2. Configuring an HTTPS-connection for an instance

Add the following lines in the section for the VirtualHost:

RewriteEngine On
RewriteCond %{SERVER_PORT} !^443$
RewriteRule (.*) https://%{HTTP_HOST}/$1 [L]
RequestHeader set X-Forwarded-Proto "https"

The VirtualHost-configuration is found in these files — depending on the distribution being used:

Debian, Ubuntu






Following a configuration change the webserver must be restarted. The restart commands are different for each distribution:

root@linux# service httpd restart
root@linux# service apache2 restart
root@linux# systemctl restart httpd
root@linux# systemctl restart apache2
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