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# osixia/keepalived # osixia/keepalived
[![](https://badge.imagelayers.io/osixia/keepalived:latest.svg)](https://imagelayers.io/?images=osixia/keepalived:latest 'Get your own badge on imagelayers.io') [![](https://badge.imagelayers.io/osixia/keepalived:latest.svg)](https://imagelayers.io/?images=osixia/keepalived:latest 'Get your own badge on imagelayers.io') | Latest release: 0.2.0 - [Changelog](CHANGELOG.md) | [Docker Hub](https://hub.docker.com/r/osixia/keepalived/) 
A docker image to run Keepalived. A docker image to run Keepalived.
> [keepalived.org](http://keepalived.org/) > [keepalived.org](http://keepalived.org/)
@ -9,11 +9,14 @@ A docker image to run Keepalived.
This image require the kernel module ip_vs loaded on the host (`modprobe ip_vs`) and need to be run with : --cap-add=NET_ADMIN --net=host This image require the kernel module ip_vs loaded on the host (`modprobe ip_vs`) and need to be run with : --cap-add=NET_ADMIN --net=host
docker run --cap-add=NET_ADMIN --net=host -d osixia/keepalived docker run --cap-add=NET_ADMIN --net=host -d osixia/keepalived:0.2.0
## Environment Variables ## Environment Variables
Environement variables defaults are set in **image/env.yaml**. You can modify environment variable values directly in this file and rebuild the image ([see manual build](#manual-build)). You can also override those values at run time with -e argument or by setting your own env.yaml file as a docker volume to `/container/environment/env.yaml`. See examples below. Environment variables defaults are set in **image/environment/default.yaml**
See how to [set your own environment variables](#set-your-own-environment-variables)
- **KEEPALIVED_INTERFACE**: Keepalived network interface. Defaults to `eth0` - **KEEPALIVED_INTERFACE**: Keepalived network interface. Defaults to `eth0`
- **KEEPALIVED_PASSWORD**: Keepalived password. Defaults to `d0cker` - **KEEPALIVED_PASSWORD**: Keepalived password. Defaults to `d0cker`
@ -23,9 +26,9 @@ Environement variables defaults are set in **image/env.yaml**. You can modify en
- 192.168.1.10 - 192.168.1.10
- 192.168.1.11 - 192.168.1.11
If you want to set this variable at docker run command convert the yaml in python : If you want to set this variable at docker run command add the tag `#PYTHON2BASH:` and convert the yaml in python:
docker run -e KEEPALIVED_UNICAST_PEERS="[192.168.1.10', '192.168.1.11']" -d osixia/phpldapadmin docker run --env KEEPALIVED_UNICAST_PEERS="#PYTHON2BASH:['192.168.1.10', '192.168.1.11']" --detach osixia/keepalived:0.2.0
To convert yaml to python online : http://yaml-online-parser.appspot.com/ To convert yaml to python online : http://yaml-online-parser.appspot.com/
@ -51,7 +54,45 @@ Or by setting your own `env.yaml` file as a docker volume to `/container/environ
docker run -v /data/my-env.yaml:/container/environment/env.yaml \ docker run -v /data/my-env.yaml:/container/environment/env.yaml \
-d osixia/keepalived -d osixia/keepalived
## Manual build ### Set your own environment variables
#### Use command line argument
Environment variables can be set by adding the --env argument in the command line, for example:
docker run --env KEEPALIVED_INTERFACE="eno1" --env KEEPALIVED_PASSWORD="password!" \
--env KEEPALIVED_PRIORITY="100" --detach osixia/keepalived:0.2.0
#### Link environment file
For example if your environment file is in : /data/environment/my-env.yaml
docker run --volume /data/environment/my-env.yaml:/container/environment/01-custom/env.yaml \
--detach osixia/keepalived:0.2.0
Take care to link your environment file to `/container/environment/XX-somedir` (with XX < 99 so they will be processed before default environment files) and not directly to `/container/environment` because this directory contains predefined baseimage environment files to fix container environment (INITRD, LANG, LANGUAGE and LC_CTYPE).
#### Make your own image or extend this image
This is the best solution if you have a private registry. Please refer to the [Advanced User Guide](#advanced-user-guide) just below.
## Advanced User Guide
### Extend osixia/keepalived:0.2.0 image
If you need to add your custom TLS certificate, bootstrap config or environment files the easiest way is to extends this image.
Dockerfile example:
FROM osixia/osixia/keepalived:0.2.0
MAINTAINER Your Name <your@name.com>
ADD environment /container/environment/01-custom
ADD scripts.sh /container/service/keepalived/assets/notify.sh
### Make your own keepalived image
Clone this project : Clone this project :
@ -61,7 +102,7 @@ Clone this project :
Adapt Makefile, set your image NAME and VERSION, for example : Adapt Makefile, set your image NAME and VERSION, for example :
NAME = osixia/keepalived NAME = osixia/keepalived
VERSION = 0.1.6 VERSION = 0.2.0
becomes : becomes :
NAME = billy-the-king/keepalived NAME = billy-the-king/keepalived
@ -75,7 +116,7 @@ Run your image :
docker run -d billy-the-king/keepalived:0.1.0 docker run -d billy-the-king/keepalived:0.1.0
## Tests ### Tests
We use **Bats** (Bash Automated Testing System) to test this image: We use **Bats** (Bash Automated Testing System) to test this image:
@ -84,3 +125,13 @@ We use **Bats** (Bash Automated Testing System) to test this image:
Install Bats, and in this project directory run : Install Bats, and in this project directory run :
make test make test
### Under the hood: osixia/light-baseimage
This image is based on osixia/light-baseimage.
More info: https://github.com/osixia/docker-light-baseimage
## Changelog
Please refer to: [CHANGELOG.md](CHANGELOG.md)