A docker image to run keepalived
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
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"