Ubuntu Server / Apache not listening to port 443

I’m having trouble reaching my site through https after executing the certbot script. That process finished without issues, the message was: Congratulations, you have succesfully enabled https://chiloexpress.ddns.net However, when I test my configuration at SSLlabs, the error message says: Assessment failed: Unable to connect to the server When I try to access my site with…

Debugging postfix/dovecot: Finding out which application is trying to connect from localhost 127.0.0.1

The problem occurs on my mail server, which apart from that works perfectly. Clients can connect via IMAP and Postfix receives and sends out emails without any hassle. Installed software: $> dpkg –list ii postfix 3.1.12-0+deb9u1 amd64 ii dovecot-core 1:2.2.27-3+deb9u5 amd64 ii dovecot-imapd 1:2.2.27-3+deb9u5 amd64 I get the following error message every minute (and as…

Cannot create PersistentVolume in Kubernetes

I’m trying to create a new PersistentVolume in Kubernets (version 1.14), but it returns me the following error: The PersistentVolume “postgres-pv-volume” is invalid: * spec.persistentvolumesource: Forbidden: is immutable after creation * nodeAffinity: Invalid value: “null”: field is immutable Here’s my YAML: apiVersion: v1 kind: PersistentVolume metadata: name: postgres-pv-volume namespace: is-app spec: capacity: storage: 5Gi accessModes:…