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/usr/bin/docker run --name haproxy \
    -e HAPROXY_STATS=1 \
    -e HAPROXY_STATS_PWD=mypassword \
    -p 80:80 \
    -p 39287:1000 \
    -v /path_to_merge_config/custom.cfg:/etc/haproxy/custom.cfg \                

Docker environment variables

HAPROXY_STATS enable/disable haproxy stats (default 0)
HAPROXY_STATS_PWD protect haproxy stats with password (default none)
HAPROXY_STATS_ADMIN enable management of backends (default 0)

Configuring haproxy

The haproxy config is generated based on confd template located in /etc/confd folder.

Etcd variables

http_auth -
cookie_auth -
block_robots -

##Testing haproxy configuration templating with confd

###Start local etcd


export HostIP=""
export ETCD_NODE="$HostIP:4001"

docker run -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
 -d -ti --name etcd \
 -name etcd0 \
 -advertise-client-urls http://$HostIP:2379,http://$HostIP:4001 \
 -listen-client-urls, \
 -initial-advertise-peer-urls http://$HostIP:2380 \
 -listen-peer-urls \
 -initial-cluster-token etcd-cluster-1 \
 -initial-cluster etcd0=http://$HostIP:2380 \
 -initial-cluster-state new

etcdctl -C http://$HostIP:4001 member list

###Start interactive haproxy Docker instance with mapped configuration

export HostIP=""
export ETCD_NODE="$HostIP:4001"

mkdir /tmp/haproxy_etc
chmod 0777 /tmp/haproxy_etc

#cd <dockerfiles/haproxy folder>

# to avoid errors with default errorfile directives
docker run --rm -ti \
    -v /tmp/haproxy_etc:/etc/haproxy2 \
    --entrypoint /bin/cp \
    bigm/haproxy \
    -r /etc/haproxy/errors /etc/haproxy2/

# start interactive session where you will compile templates
docker run --rm -ti \
    -v $PWD/confd:/etc/confd \
    -v /tmp/haproxy_etc:/etc/haproxy \
    -v $PWD/supervisor/haproxy.conf:/etc/supervisord.d/haproxy.conf \
    -e HAPROXY_STATS=1 \
    -e HAPROXY_STATS_PWD=mypwd \
    -P \
    --entrypoint bash \

# generate temple and validate
confd -node $ETCD_NODE -onetime && /usr/sbin/haproxy -c -f /etc/haproxy/haproxy.cfg         

###Use etcd api if needed



# create backend config (it should use ttl)
etcdctl --no-sync set '/lb/backends/youtrack.service/enabled' '1'
etcdctl --no-sync set '/lb/backends/youtrack.service/http_auth' '1'
etcdctl --no-sync set '/lb/backends/youtrack.service/cookie_auth' 'MyStagingProtectionCookieName'

# create domain config
etcdctl --no-sync set '/lb/domains/' '{"name":"","port":80,"backend":"youtrack.service","url":"\/"}'

# remove domain config
etcdctl rm /lb/domains --recursive
curl -L -X DELETE http://$ETCD_NODE/v2/keys/lb/domains?recursive=true        


TODO ssl support

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