/docker-keepalived

keepalived in a container

Primary LanguageDockerfileMIT LicenseMIT

docker-keepalived

A docker image to run keepalived

Quick start

This image require the kernel module ip_vs loaded on the host (modprobe ip_vs) and needs some extra capabilities:

docker run --cap-add=NET_ADMIN \
           --cap-add=NET_BROADCAST \
           --cap-add=NET_RAW \
           --net=host \
           ghcr.io/fopina/keepalived

Usage

Image entrypoint is keepalived itself with flags -n -l: run in foreground (as it is a container) and log to console

Listing all keepalived options:

docker run --rm ghcr.io/fopina/keepalived -h
Usage: keepalived [OPTION...]
  -f, --use-file=FILE          Use the specified configuration file
...
  -D, --log-detail             Detailed log messages
...

To enable detailed logging:

docker run --rm ghcr.io/fopina/keepalived --log-detail

Check Dockerfile or configuration template for an accurate list of environment configuration and their defaults:

# default configuration
ENV KEEPALIVED_VRRP=VI_1
ENV KEEPALIVED_STATE=MASTER
ENV KEEPALIVED_ETH=eth0
ENV KEEPALIVED_ROUTER=51
ENV KEEPALIVED_PRIORITY=255
ENV KEEPALIVED_ADVERT=1
ENV KEEPALIVED_AUTH=""
ENV KEEPALIVED_VIP="10.0.99.99/16"