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