Hot opensource news
8 08 2016
We know a lot of people who write or use ansible role and playbook but only few of them think about implement tests. Typically playbooks or roles are written in a VM and tested each time on the same VM until the playbook says “OK” everywhere. In the best case, the VM is sometime flushed to validate […]
15 12 2015
In my devops life, one of my customer ask to have the possibility to update one by one his java workers but without interuption. They are java workers behind an apache. Apache load balance request between the workers with mod proxy ajp. The goal was to : Remove one of both tomcat server from the […]
20 11 2015
As we know docker is for Build, Ship, Run applications. Usually developers use docker to dev new app and host them with applications like OpenShift. You can find a lot of article about develop and build application in docker containers. I decided to write a small article on an other aspect of docker that I often use. Application testing […]
19 10 2015
The last week we had a production incident on one of our customer Monitoring was red, check_http was in timeout state and the web server doesn’t wanted to handle new connexions. So what is our problem, what happened to this web site, it was fine for long time and today, we have just a lot […]
12 08 2015
Figure out how recover from split brain Recently my whole rabbitmq cluster 3.5 crashed. Generally just restart the last node up before the crash is enough. But sometimes not. I would point out that I have learned in some worst case scenario with rabbitmq. I’m not going to talk about a simple node crash, rabbitmq handle this […]
4 07 2015
One day I had a bug on OpenStack platform. If I remember well it was a nova problem. Lucky day for a debug session, all nova logs was in DEBUG level ! But as you may know, when you set this log level in OpenStack services, the output can be really, really, really verbose. So […]