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Daniel Nachtrub

Daniel Nachtrub

Just some guy working with computers.

Writing efficient zabbix templates - consolidate values

Writing efficient zabbix templates - consolidate values

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.

Daniel Nachtrub
Daniel Nachtrub
Monitoring
Reducing ceph filesystem overhead on virtual systems

Reducing ceph filesystem overhead on virtual systems

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.

Daniel Nachtrub
Daniel Nachtrub
Linux
Maintenance mode on elasticsearch clusters

Maintenance mode on elasticsearch clusters

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.

Daniel Nachtrub
Daniel Nachtrub
Powershell
Relocate pagefile using powershell

Relocate pagefile using powershell

This short guide explains how to set pagefile configuration using powershell.

Daniel Nachtrub
Daniel Nachtrub
Windows
Using AzureCli with command completion on windows

Using AzureCli with command completion on windows

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.

Daniel Nachtrub
Daniel Nachtrub
Azure
docker daemon not starting after upgrade

docker daemon not starting after upgrade

Having upgraded docker you may come into a situation where the docker daemon itself doesn't start anymore because of an issue with firewalld.

Daniel Nachtrub
Daniel Nachtrub
Container
Docker - Hardening with firewalld

Docker - Hardening with firewalld

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.

Daniel Nachtrub
Daniel Nachtrub
Linux
Nextcloud - NativeReadStream excess data will be lost

Nextcloud - NativeReadStream excess data will be lost

Running nextcloud with smb as external files runs into an issue starting with some of the latest releases - we saw the issue first on release 21.0.1. This guide describes how to implement a workaround until an official fix is available.

Daniel Nachtrub
Daniel Nachtrub
Linux