terraform - use nullable in variables for default values
Writing terraform makes it easy to split code into modules. To avoid setting default values on each layer of the stack, use nullable to provide a way to fallback to the module's own default value.
upgrade postgres with timescaledb
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
Upgrading pfsense running on hyper-v to version 2.6 might result in a massive performance regression when the VMSwitch has RSC enabled.
Storage Spaces Direct / S2D - Disks stuck in maintenance mode
Having a storage space direct cluster stuck in storage maintenance mode feels quite unlucky. Luckily we've fond a way to fix this!
Zabbix 6.0 - new major release
While the whole world seems to run prometheus, zabbix is still on track and provides a whole set of new features on it's next major release: Zabbix 6.0. This post will give a brief overview about the (in my opinion) most important features. Baseline monitoringThis is one of the
Exchange database fails with serious I/O error
Running exchange servers there's a slight chance that the database growth results in a state where the filesystem cannot allocate anymore segments. Let's fix this.
Upgrading kernel on Ubuntu (20.04) LTS
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.
Upgrading ceph - migrating from docker hub
Many vendors are moving container registries away from docker hub. One of them is ceph. This means: Recent container images are no longer published via docker hub and will prevent you from upgrading using cephadm if your installation is still pointing to docker hub. Issue: failed to pull target imageTrying
