1、安装
ubuntu 1804上安装:
sudo apt install haproxy
查看版本号1.8.8:
haproxy -v
2、配置
配置文件:/etc/haproxy/haproxy.cfg
日志:/var/log/haproxy.log
在haproxy.cfg中添加以下代码
# Load Balancing for Galera Cluster
listen galera
bind *:8011
balance source
mode tcp
option tcpka
#option mysql-check user haproxy
server node1 192.168.1.251:3306 check weight 1
server node2 192.168.1.252:3306 check weight 1
server node3 192.168.1.253:3306 check weight 1
server node4 192.168.1.254:3306 check weight 1
3、启动
sudo systemctl status haproxy
sudo systemctl start haproxy
或
sudo systemctl restart haproxy