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.
Terraform - transform values of a map
If you're developer, you might wonder about control structures in terraforms declarative language. Some things need to think about the corner, some things are more straight forward than expected. Second applies to using for loops to map values.
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.
pfsense - CRL has expired in openvpn server
A few days ago we ran into an issue where pfsense appliances started to refuse openvpn connections by showing "CRL has expired" error messages. As it shows the reason is an overflow a date.
Service accounts in kubernetes 1.24
Kubernetes 1.24 changed the way serviceaccounttokens are presented by default on the cluster itself. If you need to retrieve the token, you mostly use a secret for this. This guide shows how to do this in kubernetes >= 1.24.
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.
Replace tls cert using commandline (netsh)
TLS endpoints on windows are often served by the operating system itself. Related certificate bindings can be managed using the command line easily. This guide shows how to replace a certificate using the commandline.
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.
