Linux
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.
Reducing ceph filesystem overhead on virtual systems Paid Members Public
Running ceph clusters with cephfs may allocate more disk space than you expect - especially on virtualized environments. This guide might provide a solution for that.
Using AzureCli with command completion on windows Paid Members Public
If you're working with azure you're propably also working with AzureCli. This article shows how to get usable command completion on your client.
docker daemon not starting after upgrade Paid Members Public
Having upgraded docker you may come into a situation where the docker daemon itself doesn't start anymore because of an issue with firewalld.
Docker - Hardening with firewalld Paid Members Public
Containers are no virtual machines - yet we might want to treat hosts running container workloads like hypervisors and apply limitations on container networking. This guide describes a way to limit container networking on docker based container hosts using firewalld.
