Linux

upgrade postgres with timescaledb 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.

Daniel Nachtrub
Daniel Nachtrub
Linux

freebsd 12.3 / pfsense 2.6 on hyper-v with low throughput 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.

Daniel Nachtrub
Daniel Nachtrub
Linux

Upgrading kernel on Ubuntu (20.04) LTS 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.

Daniel Nachtrub
Daniel Nachtrub
Linux

pfsense - access ipmi using ipmitool 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.

Daniel Nachtrub
Daniel Nachtrub
Linux

ceph reports "n hosts fail cephadm check" 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.

Daniel Nachtrub
Daniel Nachtrub
Linux

sudo root shell with autocomplete 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.

Daniel Nachtrub
Daniel Nachtrub
Linux

Change BIOSGUID in Hyper-V machines 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.

Daniel Nachtrub
Daniel Nachtrub
Linux

Migrating zabbix from mysql to timescaledb - introduction 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.

Daniel Nachtrub
Daniel Nachtrub
Monitoring