Basic HAProxy Setup for Multiple Services with Docker

docker-compose.yml

version: "3"
services:

  haproxy:
    image: haproxy:2.1-alpine
    container_name: ingress-haproxy
    volumes:
      - ./haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro
    ports:
      - 8406:8404
      - 80:80
      - 443:443
      - 5672:5672
      - 15672:15672
      - 6379:6379
    restart: unless-stopped

HA Proxy With Docker.md

Basic HAProxy Setup for Multiple Services with Docker

• RabbitMQ
• Redis
• Web Server/Ingress

haproxy.cfg

global
    log 127.0.0.1 local1
    maxconn 50000

defaults
    log global
    mode tcp
    option tcplog
    retries 3
    option redispatch
    option log-health-checks
    timeout connect 3s
    timeout client 6s
    timeout server 6s

listen stats
    bind *:8404
    mode http
    option http-use-htx
    http-request use-service prometheus-exporter if { path /metrics }
    stats enable
    stats uri /stats
    stats refresh 10s

listen lb-tcp-1
    bind *:80
    mode tcp 
    balance leastconn
    option tcplog
    option tcp-check

    server srv-01 srv-01:80 check inter 5s
    server srv-02 srv-02:80 check inter 5s
    
listen lb-tcp-2
    bind *:443
    mode tcp 
    balance leastconn
    option tcplog
    option tcp-check

    server srv-01 srv-01:443 check inter 5s
    server srv-02 srv-02:443 check inter 5s
    
listen rabbitmq
    bind *:5672
    mode tcp
    balance leastconn
    option tcplog
    option tcp-check
    option clitcpka
    timeout client 3h
    timeout server 3h
    server srv-01 srv-01:5672 check inter 5s
    server srv-02 srv-02:5672 check inter 5s

listen rabbitmq-http
    bind *:15672
    mode http
    balance roundrobin
    option httplog
    option httpchk
    server srv-01 srv-01:15672 check inter 5s
    server srv-02 srv-02:15672 check inter 5s

listen keydb 
    bind *:6379 name redis 
    mode tcp
    balance first
    option tcplog
    option tcp-check 
    #uncomment these lines if you have basic auth
    #tcp-check send AUTH\ yourpassword\r\n
    #tcp-check expect +OK
    tcp-check send PING\r\n
    tcp-check expect string +PONG 
    tcp-check send info\ replication\r\n
    tcp-check expect string role:active-replica
    tcp-check send QUIT\r\n
    tcp-check expect string +OK

    server srv-01 srv-01:6379 check inter 1s
    server srv-02 srv-02:6379 check inter 1s