alyu / docker

Various Docker files for dev/test.

Docker files

Various docker files for dev/test.

Base Docker files for Debian, Ubuntu and Centos

Docker files to build minimal SSH enabled Debian, Ubuntu and Centos images.

$ cd base/ubuntu

#build image
$ build-docker-image ubuntu mytag $HOME/$USER/.ssh/id_rsa.pub

#launch 5 containers, host volume mapped to /opt/data/ubuntu-N
$ launch-docker-containers ubuntu mytag 5

#stop only containers named ubuntu
$ stop-docker-containers ubunt*

#stop and remove containers named centos
$ stop-docker-containers centos*

Percona XtraDB Cluster 5.6 Dockerfile

This docker file creates an image with the most recent Percona XtraDB Cluster 5.6 package installed. Each launched image starts a single bootstrapped Galera node. A launched image will check if the MySQL server's data dir needs to be initated or can be re-used.

Run the bootstrap-cluster.sh script to bootstrap a cluster. The script sets a proper wsrep-cluster-address for all instances named 'galera-N' and then performs a rolling node restart of the DB nodes to join the cluster.

Build a docker image

The default root user and MySQL server root password is 'root123'. Ports exposed: 22 80 443 4444 4567 4568

Before creating the image, tune the my.cnf file to your liking.

centos:latest

$ cd percona-xtradb-5.6/centos
$ ./build.sh

ubuntu:latest

$ cd percona-xtradb-5.6/ubuntu
$ ./build.sh

$ docker images

alyu/ubuntu         pxc56               d440fdc4dffc        4 days ago          566.3 MB
alyu/centos         pxc56               01eb2d9512be        4 days ago          1.059 GB

Start 3 db instances

Launch 3 images named 'galera-1', 'galera-2', and 'galera-3' and map the host's /mnt/data/{centos-pxc56|ubuntu-pxc56}/mysql to the instance's /var/lib/mysql direcory.

$ ./start-servers.sh 3

$ docker ps

CONTAINER ID        IMAGE               COMMAND                CREATED             STATUS              PORTS                                                             NAMES
7349a81d2294        alyu/centos:pxc56   /bin/bash /opt/init.   4 seconds ago       Up 2 seconds        22/tcp, 3306/tcp, 443/tcp, 4444/tcp, 4567/tcp, 4568/tcp, 80/tcp   galera-3
862280f54f62        alyu/centos:pxc56   /bin/bash /opt/init.   4 seconds ago       Up 3 seconds        22/tcp, 3306/tcp, 443/tcp, 4444/tcp, 4567/tcp, 4568/tcp, 80/tcp   galera-2
bcb8ea7da6c3        alyu/centos:pxc56   /bin/bash /opt/init.   4 seconds ago       Up 3 seconds        22/tcp, 3306/tcp, 443/tcp, 4444/tcp, 4567/tcp, 4568/tcp, 80/tcp   galera-1

Bootstrap the Galera cluster

Sets a proper wsrep-cluster-address in each node's my.cnf file and performs a rolling restart of the nodes so that they join the cluster.

$ ./bootstrap-cluster.sh

Login to the first node and check the cluster status

$ ssh [email protected] (pass: root123)
$ mysql -uroot -proot123 -e "show status like '%wsrep%'"