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生成证书 see https://docs.docker.com/engine/security/https/
CA只用创建一次,之后在不同的结点上分别创建csr然后到CA的server上去签署证书
修改/etc/default/docker
/etc/default/docker
DOCKER_OPTS+=" -H unix:///var/run/docker.sock --tlsverify --tlscacert=/var/docker/ca.pem --tlscert=/var/docker/server-cert.pem --tlskey=/var/docker/server-key.pem -H tcp://<ip>:2376"
重启docker服务
sudo service docker restart
如果遇到任何问题可以查看/var/log/upstart/docker.log来检查错误信息
/var/log/upstart/docker.log