Posts for devops


Docker on CentOS 7 machine with XFS filesystem can cause trouble when d_type is not supported

At my work, we try to automate almost everything. We're using Docker to containerize our in-house d…


Backup Percona XtraDB Cluster or Galera Cluster with TwinDB

Database servers and clusters should be backed up regularly to prevent data loss when an error or d…


High Available MySQL database cluster to eliminate your next SPOF

In high-available production environments like a Software-as-a-Service Cloud environment, you have …


Extend Kubernetes Persistent Volumes

In Kubernetes it is possible to use Persistent Volumes to add persistent storage to your Docker con…


Install CFSSL and CFSSLJSON - CloudFlare's KPI toolkit

Generating certificate signing requests (CSR), certificates and keys can be a hassle. CloudFlare in…


Kubernetes cluster on OpenStack - Part 1

The last few weeks I'm working with Kubernetes and OpenStack. It's a steep learning curve to get a …