#nacos dev env PREFER_HOST_MODE=hostname NACOS_SERVERS=172.16.238.10:8848 172.16.238.11:8848 172.16.238.12:8848 MYSQL_MASTER_SERVICE_HOST=mysql-master MYSQL_MASTER_SERVICE_DB_NAME=nacos_devtest MYSQL_MASTER_SERVICE_PORT=3306 MYSQL_SLAVE_SERVICE_HOST=mysql-slave MYSQL_SLAVE_SERVICE_PORT=3306 MYSQL_MASTER_SERVICE_USER=nacos MYSQL_MASTER_SERVICE_PASSWORD=nacos