manwerjalil/haproxy repository overview

docker pull manwerjalil/haproxy:latest

docker create -it --network network_name --ip ip_address -h haproxy1 -p 5000:5000 -p 5001:5001 -p 7000:7000 --name haproxy1 haproxy:latest

docker start haproxy1

docker exec -ti haproxy1 bash -c "nano /etc/haproxy/haproxy.cfg"

global
     log 127.0.0.1   local2
     chroot /var/lib/haproxy
     stats socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners
     stats timeout 30s
     user haproxy
     group haproxy
     maxconn 100
     daemon

defaults
    mode                    tcp
    log                     global
    option                  tcplog
    retries                 3
    timeout queue           1m
    timeout connect         10s
    timeout client          1m
    timeout server          1m
    timeout check           10s
    maxconn                 100

listen stats
    mode http
    bind *:7000
    stats enable
    stats uri /

listen primary
    bind *:5000
    option httpchk OPTIONS /master
    http-check expect status 200
    default-server inter 3s fall 3 rise 2 on-marked-down shutdown-sessions
    server postgres1 postgres1_ip:6432 maxconn 100 check port 8008
    server postgres2 postgres2_ip:6432 maxconn 100 check port 8008
    server postgres3 postgres3_ip:6432 maxconn 100 check port 8008

listen replicas
    bind *:5001
    balance roundrobin
    option httpchk OPTIONS /replica
    http-check expect status 200
    default-server inter 3s fall 3 rise 2 on-marked-down shutdown-sessions
    server postgres1 postgres1_ip:6432 maxconn 100 check port 8008
    server postgres2 postgres2_ip:6432 maxconn 100 check port 8008
    server postgres3 postgres3_ip:6432 maxconn 100 check port 8008

docker exec -ti haproxy1 bash -c "service haproxy start"

psql -h localhost -p 5000 -u postgres

psql -h localhost -p 5001 -u postgres