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.
Running services in docker swarm utilizes the docker swarm routing mesh which results in source nat (snat). If you need to bypass this, check out this guide.
If you're working with git and are using certificates without revocation lists on windows this article shows how you can disable ssl revocation checks on git client.
On some of our setups we had an issue with VM to VM latencies (no the same host) ranging between 1000-2000ms. This article will describe the issue and how we solved it.
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.
Getting useful insights with your monitoring solution means you need to gather enough information that can be used to draw the right conclusions. This article will show how to retrieve vast amounts of data without overloading your monitoring system.
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.
Running elasticsearch means that you'll need to perform maintnance on the nodes from time to time. This guide will describe steps that should be done when performing maintenance operations on an elasticsearch cluster.