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Database

Running postgres in kubernetes with hugepages

Running postgres in kubernetes with hugepages

To run postgres in a container on nodes with huge pages enabled requires you to configure the container accordingly. This post shows how to do this on kubernetes/openshift.

Daniel Nachtrub
Daniel Nachtrub
Container
Migrating zabbix from mysql to timescaledb - migration

Migrating zabbix from mysql to timescaledb - migration

This series describes how to migrate a mysql database to timescaledb - use case is to migrate a zabbix application database. This part handles the migration and switchover of the server environment up to completion of the migration.

Daniel Nachtrub
Daniel Nachtrub
Database
Migrating zabbix from mysql to timescaledb - database setup

Migrating zabbix from mysql to timescaledb - database setup

This part continues our mysql to timescaleDB migration. We prepare our target database and add some helpers on the source to create a resumable process.

Daniel Nachtrub
Daniel Nachtrub
Database
Rocketchat fails after upgrade with index error

Rocketchat fails after upgrade with index error

Upgrading rocketchat to version 5.0 resulted in some minor issues that prevented the system from starting - both are related to the database and can easily be fixed.

Daniel Nachtrub
Daniel Nachtrub
Container
Forever growing zabbix database

Forever growing zabbix database

Starting with zabbix 6.0 some new featuers have been added - for example audit logging. This post shows downsides / limitations of audit logging on this release and how to avoid negative impact of this.

Daniel Nachtrub
Daniel Nachtrub
Database
upgrade postgres with timescaledb

upgrade postgres with timescaledb

Upgrading postgres can be a challenging task, because databases are mostly in use. Having extensions like timescaledb introduces even more complexity. This guide shows a fast way to upgrade a postgres database with timescaledb.

Daniel Nachtrub
Daniel Nachtrub
Linux
Exchange database fails with serious I/O error

Exchange database fails with serious I/O error

Running exchange servers there's a slight chance that the database growth results in a state where the filesystem cannot allocate anymore segments. Let's fix this.

Daniel Nachtrub
Daniel Nachtrub
Windows
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