haproxy config -- shared healthchecks PXC

gistfile1.txt

global
    log         127.0.0.1 local2

    chroot      /var/lib/haproxy
    pidfile     /var/run/haproxy.pid
    maxconn     20000
    user        haproxy
    group       haproxy
    daemon
    #nbproc     2
    spread-checks           5

    # turn on stats unix socket
    stats socket /var/lib/haproxy/stats

#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
    mode                    tcp
    log                     global
    balance                 leastconn
    option                  tcplog
    option                  dontlognull
    option                  httpchk
    option                  tcpka
        
    retries                 3
    timeout queue           1m
    timeout connect         10s
    timeout client          1m
    timeout server          1m
    timeout check           10s
    maxconn                 20000
    
# Random Reads connection (any node)
listen all *:3306
    server db1 10.2.46.120:3306 check port 9200
    server db2 10.2.46.121:3306 check port 9200
    server db3 10.2.46.122:3306 check port 9200



listen writes *:4306
    server db1 10.2.46.120:3306 track all/db1
    server db2 10.2.46.121:3306 track all/db2 backup
    server db3 10.2.46.122:3306 track all/db3 backup


# Stats interface
listen  lb_stats 0.0.0.0:80
        mode    http
        balance roundrobin
        stats   uri /
        stats   realm "HAProxy Stats"