Open source Team

SUSE Expert Day Zürich

On May 16th I visited the SUSE Expert Day in Zürich. An interesting Agenda was waiting for me, all under the topic: "My kind of open"(…)

Two node patroni does not failover when one node crashes

A few days ago I had the interesting mission to build a two Node Patroni Postgres 9.6 Cluster using etcd in our openDB Appliance environment. Sounds easy, one leader, one secondary, both running etcd, that's it. But that's only the(…)

MySQL 8 and Security – Encryption of binary logs

As I discussed in some of my recent talks at conferences (at the DOAG for example), MySQL 8 came out with new features which bring lots of improvements in terms of security.

DC/OS: Install Marathon-LB with keepalived

After the minimal setup of the DC/OS in my further articles, I wanted to extend my DC/OS and add a loadbalancer. There are two options for loadbalancing in DC/OS 1. Marathon-LB (a layer 7 load balancer, used for external requests,(…)

Password Verification Policy in MySQL 8.0.13

The new release 8.0.13 for MySQL is available since last week. Concerning security, this comes with a new feature already announced: the Password Verification Policy. Let's have a look...

Deploy DC/OS using Ansible (Part 2) – Playbooks

Finally, after all the configuration stuff is done, we can run the playbooks Create SSH Access First the SSH Access on all nodes need to be created. Therefore the access-onprem.yml is used: Be careful, I used CentOS on(…)

Deploy DC/OS using Ansible (Part 1) – Getting Started

To start into this topic I want to shortly explain some basics. Afterwards I show you how to prepare the configuration files.

Deploy a MySQL Server in Docker containers

We hear about Docker every day. By working on MySQL Server, I am curious to test this platform which makes it possible to create containers independent of the OS to deploy virtualized applications. So let's try to deploy a MySQL(…)

MySQL 8.0 – Roles are finally there

Roles have been existing on many RDBMS for a long time by now. Starting from version 8.0, this functionality is finally there for MySQL. The most important advantage is to define only once a role that includes a “set(…)

How uid mapping works in Docker containers?

It can be interesting to see how uids between the docker host and docker containers are mapped. For example, for security concerns. As a reminder, docker containers are based on two linux kernel features:(…)