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The scenario: you have a running kubernetes cluster, but suddenly some of your containers start to have problems. Obviously now there must be a way to find out what exactly is causing these problems. In this post I’ll highlight two ways to debug a container running on kubernetes: ephemeral-containers (which is likely what you should use most of the time) nsenter (which is a last resort debugging option that requires access to the node the Pod is running on) Want to follow along?...

To install kata-containers on a raspberry-pi and integrating it into kubernetes a few steps are currently required: Install kata-containers Setup integration into containerd Setup integration into kubernetes Install kata-containers Currently the easiest (and apparently only) officially supported way to install kata-containers on an aarch64 system is to use snaps. If you are using the Ubuntu arm version this is already included in the installation and you can install kata-containers with a single command1:...

While this post will end up with a running Teamspeak server, it is very hard on the resources of the Raspberry Pi and might not be suitable for everyday use. To deploy a teamspeak server on raspberry pi a few things need to be done: (optional) Get a Kubernetes cluster up and running (this is not required, if you just want to run the docker container directly). Get Teamspeak to run on ARM....

When wanting to work on a collection for ansible it is (for now1) important to check it out in a very specific folder structure or it will not be possible to run the tests for it. When trying to run ansible-test integration it will otherwise throw the following error: 1ERROR: The current working directory must be at or below: 2 3 - an Ansible collection: {...}/ansible_collections/{namespace}/{collection}/ 4 5Current working directory: <some_other_dir> The collection must be really placed inside a subfolder of a folder called ansible_collections and neither namespace nor collection can contain any symbols except alphanumberics or underscores ([a-zA-Z0-9_]):...

Newer version of the openssh will use their own format to store a private key: -----BEGIN OPENSSH PRIVATE KEY----- BASE64KEYTEXT -----END OPENSSH PRIVATE KEY----- The traditional format of the key can sometimes be useful (or even required - for example guacamole will not be able to use the OPENSSH key format). To convert the key use ssh-keygen. The command will overwrite the private key file, so if the original key should be preserved make sure to create a backup:...

Personal blog Converting openssh private key to PEM format   openssh Newer versions of the openssh will use their own format to store a private key: -----BEGIN OPENSSH PRIVATE KEY----- BASE64KEYTEXT -----END OPENSSH PRIVATE KEY----- The traditional format of the key can sometimes be useful (or even required - for example guacamole will not be able to use the OPENSSH key format). To convert the key use ssh-keygen. The command will overwrite the private key file, so if the original key should be preserved make sure to create a backup:...