Linux
Kubernetes Cluster & self-hosted Registry: Trusting the CA Paid Members Public
You build your OnPremise Kubernetes Cluster and set up your self-hosted private registry. To make it pretty you used your own CA to sign the certificate for the registry. Everything is fine and now you are ready to deploy your own services to your Kubernetes Cluster and develop some awesome
Running postgres in kubernetes with hugepages Paid Members Public
To run postgres in a container on nodes with huge pages enabled requires you to configure the container accordingly. This post shows how to do this on kubernetes/openshift.
Use openssl to verify certificates Paid Members Public
Certificates are essential for todays security needs. Sometimes it's required to revoke them, maybe because they are no longer needed or because they got even compromised. But how do you test manually if a certificate has been revoked?
pfsense - CRL has expired in openvpn server Paid Members Public
A few days ago we ran into an issue where pfsense appliances started to refuse openvpn connections by showing "CRL has expired" error messages. As it shows the reason is an overflow a date.
upgrade postgres with timescaledb Paid Members Public
Upgrading postgres can be a challenging task, because databases are mostly in use. Having extensions like timescaledb introduces even more complexity. This guide shows a fast way to upgrade a postgres database with timescaledb.
freebsd 12.3 / pfsense 2.6 on hyper-v with low throughput Paid Members Public
Upgrading pfsense running on hyper-v to version 2.6 might result in a massive performance regression when the VMSwitch has RSC enabled.
Upgrading kernel on Ubuntu (20.04) LTS Paid Members Public
Upgrading kernels on LTS releases of ubuntu can easily be done by enabling an LTS enablement stack. This guide will show how and what to consider.
pfsense - access ipmi using ipmitool Paid Members Public
Recent versions of pfsense ship with ipmitool. To use it you need to load the kernel module - this guide shows how to do this.
