Structure needs cleaning error fix
I have recently experienced an error in my k8s setup “Relabel failed… structure needs cleaning”. As a result one of the k8s container/pod failed to start. ...
Howto
VIM tab settings for yaml files
Simple vim configuration adjustments to make it work better with yaml files. Personal notes: My personal notes on how to setup stuff to make it easier to re...
IMAP Accounts Migration
When you move your email account around, either between different hosting providers or to/from self-hosted system, you usually want to take your mailbox with...
Let’s Encrypt and back to RSA keys
A while ago Let’s Encrypt switched over to use more modern, safer and efficient ECDSA private keys algorithm instead of RSA. And made the ECDSA algorithm def...
Kubernetes dashboard on k8s cluster
“Kubernetes Dashboard is a general purpose, web-based UI for Kubernetes clusters. It allows users to manage applications running in the cluster and troublesh...
K8s on Oracle Cloud [Part 9]: Setting up Mailu as email server
Mailu is an email server package with SMTP, IMAP, POP, admin WEB Console, Webmail, virus scanner and more. For more details about Mailu and features set, ref...
K8s on Oracle Cloud [Part 8]: Setting up Longhorn
Longhorn is another basic service that is installed on the k8s cluster to be used by other services and applications. It is not mandatory but it is extremely...
K8s on Oracle Cloud [Part 7]: Setting up cert-manager
cert-manager should be installed as one of the first services as many services depend on it and may fail to deploy corectly if cert-manager is missing. To s...
K8s on Oracle Cloud [Part 6]: Setting up Ingress Nginx
Ingress Nginx Controller should be installed as one of the first services. It does not really matter if it is the first or second one. This is because it is ...
K8s on Oracle Cloud [Part 5]: Setting up Sealed Secrets
First service to be deployed on a k8s cluster is Sealed Secrets. This is because Sealed Secrets will be used to protect confidential information for other se...
K8s on Oracle Cloud [Part 4]: Basic config and FluxCD setup
Once we have our k8s cluster setup we need some basic services for our applications such as cert manager, ingress, logging, monitoring and so on… We will be...
Oracle Cloud [Part 1]: Ssh access to instance
Howto guide on how to access a VM instance on Oracle Cloud over ssh protocol. This guide is for access to instance with a public IP address, so no bastion in...
K8s on Oracle Cloud [Part 3]: Resize boot volume size
Howto guide on how to change a boot volume size on k8s cluster node on Oracle Cloud. Unfortunately this is not as trivial task as clicking through options on...
K8s on Oracle Cloud [Part 2]: Access k8s cluster
Howto guide on how to access a new k8s cluster created on Oracle Cloud using Oracle’s web console. Description of all the tools and configuration process to ...
K8s on Oracle Cloud [Part 1]: Create k8s cluster
Howto guide on how to create k8s cluster on Oracle Cloud using Oracle’s web console. This is a simple and quick way to run a new and empty k8s cluster withou...
Jekyll, Minimal Mistakes and PlantUML
For UML diagrams in blog posts it is very handy to use PlantUML.