Use HAProxy for Mysql master-master in Kubernetes

I’m trying to setup high-availability MySQL master-master cluster using HAProxy in Kubernetes.
Looks ok to me, the HAProxy stats show it connects MySQLs well and no error logs from pods of HAProxy. However, I can’t connect MySQL thru HAProxy and have the error below. Any clue?

I have no name!@mysql1-client:/$ mysql -hhaproxy.mysql.svc.cluster.local -uroot -p_____ -P3306
mysql: Can't get stat of '/opt/bitnami/mysql/conf/bitnami/my_custom.cnf' (OS errno 2 - No such file or directory)
mysql: [ERROR] Stopped processing the 'include' directive in file /opt/bitnami/mysql/conf/my.cnf at line 30.
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'haproxy.mysql.svc.cluster.local:3306' (111)

  global
    log stdout format raw local0
    maxconn 4096

  defaults
    log global
    retries 2
    balance roundrobin
    timeout client 60s
    timeout connect 60s
    timeout server 60s

  listen mysql
    mode tcp
    bind *:3306
    balance roundrobin
    option tcpka
    option mysql-check user haproxy_check
    server mysql-primary 10.245.11.43:3306 check
    server mysql-secondary 10.245.98.225:3306 check

  listen stats 
    bind *:1936
    mode http
    stats enable
    stats hide-version
    stats realm Haproxy\ Statistics
    stats uri /
    stats auth Username:Password

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