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.
Upgrading pfsense running on hyper-v to version 2.6 might result in a massive performance regression when the VMSwitch has RSC enabled.
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.
Recent versions of pfsense ship with ipmitool. To use it you need to load the kernel module - this guide shows how to do this.
One of our ceph clusters entered HEALTH_WARN state with reason "1 hosts fail cephadm check". This guide shows a quick tip how to find out more about this issue.
Switching user using sudo results in a limited shell without command completion. Using the right sudo command omits this limit and provides a fully fledged shell.
Using templated virtual machines on hyper-v comes with some issues if you need to ensure that each VM has a unique identity. This guide will show how you'll assign a unique identity for linux VMs.
Depending on the size of your zabbix environment, you might want to migrate from mysql to timescaledb. This guide will show how this can be done.