Linux
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.

ceph reports "n hosts fail cephadm check" Paid Members Public
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.

sudo root shell with autocomplete Paid Members Public
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.

Change BIOSGUID in Hyper-V machines Paid Members Public
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.

Migrating zabbix from mysql to timescaledb - introduction Paid Members Public
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.