If you want someone to be able to access your rails console, but don't want them to be able...

Creating Nagios Config with puppet Let's have a look at the classic way of managing Nagios configuration with exported...

There is a gem puppet-ghostbuster which can help you find dead code in puppet projects. To use it, (as...

It's quite confusing how many external displays are usable with a MacBook that uses an M1 or M2 Chip...

When you are using the default MIME-Type configuration and your application allows uploading files, it can be a security...

It is possible to manipulate the forwarded ports of an established interactive SSH session. This is done by opening the...

When you're using a third party repository on your Ubuntu or Debian system and need to find out which...

When a nginx reverse proxy complains about upstreams sending too big headers, tweaking the buffers responsibly can help to prevent...

There are cases where we have multiple exported resources that are identical. There are nodes that provide the same services...

In Puppet, there are some differences between defined and function types when it comes to code encapsulation. In most cases...

The owner of a scheduled CI/CD pipeline in GitLab will always be notified if the pipeline fails. Follow these steps...

Here's a one-liner to view base64 encoded secrets in kubernetes. Make sure you have jq installed.

Important If your railscomplete-deployment uses the net-ssh-gem please ensure you use version 5.2.0 or newer to ensure...

If you're about to handle X509 certificates and don't want to remember/google a handful of openssl commands you...

If you get e.g. this error message when you try to run puppet agent: Error: Failed to apply catalog: undefined...

If you have a PostgreSQL dump in the custom format you can can view the text format dump (plain SQL...

If one etcd node is no longer a member of the remaining etcd cluster or fails to connect you need...

This card is just about creating simple PostgreSQL dumps. This is no instruction for a backup strategy nor a guide...

swaks is a very nice tool to test SMTP. For the most linux distributions you can easily install it with...