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Daniel Nachtrub

Daniel Nachtrub

Just some guy working with computers.

Triggering elasticsearch ilm step manually

Triggering elasticsearch ilm step manually

Elasticsearch provides an index lifecycle management that will handle traversal of indices through a whole bunch of lifecycle steps. Sometimes you might want to give the ILM a small tap and move to a specific step manually. This guide will explain how this can be done.

Daniel Nachtrub
Daniel Nachtrub
Database
ceph reports "n hosts fail cephadm check"

ceph reports "n hosts fail cephadm check"

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
The one when compatible foreign keys are incompatible

The one when compatible foreign keys are incompatible

Upgrading our ghost blog ran into issues migrating the database schema. Foreign keys failed with "Referencing column and referenced column in foreign key constraint are incompatible.". Let's fix it.

Daniel Nachtrub
Daniel Nachtrub
Database
Migrating zabbix from mysql to timescaledb - setting up environment

Migrating zabbix from mysql to timescaledb - setting up environment

This series covers migrating a zabbix database from mysql to timescaledb. In this post we're preparing the databases for the migration.

Daniel Nachtrub
Daniel Nachtrub
Container
sudo root shell with autocomplete

sudo root shell with autocomplete

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

Change BIOSGUID in Hyper-V machines

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
docker swarm - preserve client ip on incoming connections

docker swarm - preserve client ip on incoming connections

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.

Daniel Nachtrub
Daniel Nachtrub
Container
git on windows on CA's without crl (mostly pki)

git on windows on CA's without crl (mostly pki)

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.

Daniel Nachtrub
Daniel Nachtrub
Windows