87 lines
2.8 KiB
Markdown
87 lines
2.8 KiB
Markdown
# osixia/keepalived
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[](https://imagelayers.io/?images=osixia/keepalived:latest 'Get your own badge on imagelayers.io')
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A docker image to run Keepalived.
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> [keepalived.org](http://keepalived.org/)
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## Quick start
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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
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docker run --cap-add=NET_ADMIN --net=host -d osixia/keepalived
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## Environment Variables
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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.
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- **KEEPALIVED_INTERFACE**: Keepalived network interface. Defaults to `eth0`
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- **KEEPALIVED_PASSWORD**: Keepalived password. Defaults to `d0cker`
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- **KEEPALIVED_PRIORITY** Keepalived node priority. Defaults to `150`
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- **KEEPALIVED_UNICAST_PEERS** Keepalived unicast peers. Defaults to :
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- 192.168.1.10
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- 192.168.1.11
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If you want to set this variable at docker run command convert the yaml in python :
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docker run -e KEEPALIVED_UNICAST_PEERS="[192.168.1.10', '192.168.1.11']" -d osixia/phpldapadmin
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To convert yaml to python online : http://yaml-online-parser.appspot.com/
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- **KEEPALIVED_VIRTUAL_IPS** Add a read only user. Defaults to :
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- 192.168.1.231
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- 192.168.1.232
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If you want to set this variable at docker run command convert the yaml in python, see above.
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- **KEEPALIVED_NOTIFY** Script to execute when node state change. Defaults to `/container/service/keepalived/assets/notify.sh`
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### Set environment variables at run time :
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Environment variable can be set directly by adding the -e argument in the command line, for example :
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docker run -e KEEPALIVED_INTERFACE="eno1" -e KEEPALIVED_PASSWORD="password!" \
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-e KEEPALIVED_PRIORITY="100" -d osixia/keepalived
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Or by setting your own `env.yaml` file as a docker volume to `/container/environment/env.yaml`
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docker run -v /data/my-env.yaml:/container/environment/env.yaml \
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-d osixia/keepalived
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## Manual build
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Clone this project :
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git clone https://github.com/osixia/docker-keepalived
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cd docker-keepalived
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Adapt Makefile, set your image NAME and VERSION, for example :
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NAME = osixia/keepalived
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VERSION = 0.1.6
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becomes :
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NAME = billy-the-king/keepalived
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VERSION = 0.1.0
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Build your image :
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make build
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Run your image :
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docker run -d billy-the-king/keepalived:0.1.0
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## Tests
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We use **Bats** (Bash Automated Testing System) to test this image:
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> [https://github.com/sstephenson/bats](https://github.com/sstephenson/bats)
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Install Bats, and in this project directory run :
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make test
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