As any server farm scales out, it becomes increasingly difficult to Watch All The Things™. I’ve been watching the progress of LogStash+ElasticSearch+Kibana (also known as an ELK stack) for a while and gave it a go this weekend. The trick for me was wanting to run each element inside of a separate Docker container so that I have easily portable elements to scale out with.

A step back. What is Docker? Docker is a container (using LXC) around an application. In short, you install Docker, start a container using a base image (CentOS, Ubuntu, etc.) and then run the container, dropping you into a shell. From here, you configure your application, then save your container. You …

Hi,
I would like to give you an overview regarding all my talks till june.

• MySQL@Ceph (Ceph Day Frankfurt ./. 27.02.2014)
  Yes you missed that already :)
• MySQL: PerformanceSchema (DOAG SIG - MySQL ./. 27.03.2014)
• Galera Cluster für MySQL (DOAG SIG - MySQL ./. 27.03.2014)
• Docker++ ./. Containervirtualisierung von Applikationen mit Merhwert (Linuxtag ./. 08.05.2014)
• Docker: Not even a Hypervisor (Containers for OpenStack) (Linuxtag ./. 09.05.2014
• Docker: LXC Applikationskontainer für jedermann (SLAC ./. 13.05.2014)

There is also a training about LXC and “newer” Linuxfeatures (Systemd, Upstart, Namespaces..) im giving at the Linuxhotal early may.

Viel Spaß :)

Erkan

February 18, 2014 By Severalnines

Virtual Machines are great, and very useful when trying out new software. However, they might be an unnecessarily heavyweight solution when testing clusters, especially if these consist of multiple nodes running exactly the same software. Each VM runs a full-blown OS image. On the other hand, Linux Containers (LXC) are an efficient alternative to OS-level virtualization and can run multiple isolated systems on a single host. Docker is a wrapper around LXC, it automates the deployment of applications inside containers. 

A notable advantage if you run with Docker + LXC is you can run many containers on a single host. They all share the same OS as the host, and when possible, the same binaries. Deployment can be extremely fast. Using Docker could be a good method if you want to spin multiple Galera nodes within a single host. 

In this post, we will create MySQL Galera Cluster …