dns

Creating self-signed wildcard-certificates for modern browsers

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OpenSSL

When setting up my local K3s on a Intel NUC I thought it would be nice to use Ingress resources to access the services instead of using a node-port. As those services will only be used inside my LAN (and I didn’t want to have an invalid certificate warning) I decided to use a self-signed … [Read more…]

Wildcard certificates, DNS challenges and Traefik in Kubernetes

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Cert Manager, Traefik, K8s

Until now I have mostly dealt with certificates for a specific host – and there is usually nothing wrong with doing it this way. There are easy to use tools for Let’s Encrypt which automate the retrieval of a certificate for a (sub-) domain. On a docker-compose based, (mostly) manually managed stack you would usually … [Read more…]