打开docker配置文件

vi /etc/docker/daemon.json

添加hosts项

"hosts":["tcp://0.0.0.0:4243","unix:///var/run/docker.sock"],
"bip": "172.31.254.1/24", 
"cluster-store": "etcd://service2.cs-cn-beijing.aliyun-inc.com:2379/c8d2d852b07ce468594deb20af13b20af",
"cluster-store-opts": { 
"kv.cacertfile": "/etc/docker/acs-ca.pem", 
"kv.certfile": "/etc/docker/agent.pem", 
"kv.keyfile": "/etc/docker/agent-key.pem" 
},
"cluster-advertise": "eth0:2376", 
"labels": [ 
"provider=aliyunecs", 
"aliyun.zone=cn-beijing-d", 
"aliyun.instance_id=i-2zeibfbzd6cb6pfazuql", 
"aliyun.node=c8d2d852b07ce468594deb20af13b20af-node1", 
"aliyun.network_mode=vpc", 
"aliyun.region=cn-beijing", 
"aliyun.node_index=1", 
"aliyun.cluster=c8d2d852b07ce468594deb20af13b20af", 
"com.docker.network.driver.overlay.vxlan.port=5789", 
"com.docker.network.driver.vpc.subnet=172.18.2.1/24", 
"aliyun.tunnel_server=tunnel2-cn-beijing-vpc.aliyun-inc.com:4443" 
], 
"log-opts": { 
"max-size": "10m", 
"max-file": "10" 
}, 
"oom-score-adjust": -1000, 
"registry-mirrors": ["https://cje4chc8.cn-beijing.mirror-vpc.aliyuncs.com"], 
"storage-driver": "overlay" 
}

参数permanent表示永久开启端口，不然重启失效

firewall-cmd --zone=public --add-port=2375/tcp --permanen

重启

firewall-cmd --reload

重启docker

systemctl restart docker

测试
用其他机器访问docker api

docker -H 59.110.229.202:2375 images