编辑openssl.cnf文件
openssl.cnf 文件位置：/etc/pki/tls/openssl.cnf
编辑/etc/pki/tls/openssl.cnf文件，在 [v3_ca]下增加一行：
[ v3_ca ]
subjectAltName = IP:192.168.169.125 # 此处IP设置为Docker本地私有库所在主机IP然后使用openssl命令在当前的certs目录下创建了一个自签名的证书：
[root@mimo150 tls]# mkdir -p certs && openssl req -newkey rsa:4096 \
-nodes -sha256 -keyout certs/domain.key \
-x509 -days 365 -out certs/domain.crt在证书的创建过程中，会询问国家、省分、城市、组织、部门和common name的信息，其中common name信息我填写的是Docker私有库主机的IP 10.0.11.150. 证书创建完毕后，在certs目录下出现了两个文件：证书文件domain.crt和私钥文件domain.key。
[root@mimo150 tls]# mkdir -p certs && openssl req -newkey rsa:4096 \
-nodes -sha256 -keyout certs/domain.key \
-x509 -days 365 -out certs/domain.crt
Generating a 4096 bit RSA private key
...........................................................++
..............++
writing new private key to 'certs/domain.key'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [XX]:china
string is too long, it needs to be less than 2 bytes long
Country Name (2 letter code) [XX]:中国
string is too long, it needs to be less than 2 bytes long
Country Name (2 letter code) [XX]:CN
State or Province Name (full name) []:TJ
Locality Name (eg, city) [Default City]:TJ
Organization Name (eg, company) [Default Company Ltd]:TJXY
Organizational Unit Name (eg, section) []:AI
Common Name (eg, your name or your server's hostname) []:10.0.11.150
Email Address []:
[root@mimo150 tls]# 安装Docker
在10.0.11.150主机上安装Docker，安装教程查看：Docker安装、操作常用命令
复制domain.crt到指定位置
将前面生成的domain.crt文件复制到/etc/docker/certs.d/10.0.11.150:5000目录下，然后重启docker进程：
[root@mimo150 tls]# mkdir -p /etc/docker/certs.d/10.0.11.150:5000
[root@mimo150 tls]# cp certs/domain.crt /etc/docker/certs.d/10.0.11.150:5000/ca.crt
[root@mimo150 tls]# systemctl restart docker运行registry容器
在Docker私有库节点10.0.11.150上运行registry容器，并暴露容器的5000端口：
[root@mimo150 tls]# docker run -d -p 5000:5000 --restart=always \
--name bigdata_docker_registry \
--privileged=true \
-v /etc/pki/tls/certs/certs:/certs \
-v /data/docker/registry:/var/lib/registry \
-e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/domain.crt \
-e REGISTRY_HTTP_TLS_KEY=/certs/domain.key \
docker.io/registry:latest-p 5000:5000 ： 指定外部端口5000映射容器内端口5000
–name registry ： 容器名称
-v /etc/pki/tls/certs:/certs ： 指定外部目录
/etc/pki/tls/certs映射容器内部目录/certs-v /data/docker/registry:/var/lib/registry : 同上一样，指定目录挂载映射
同步签名证书到Docker节点
最后，将domain.crt文件复制到Kubernetes集群里的所有节点的/etc/docker/certs.d/10.0.11.150:5000目录下，并重启各节点的docker进程，例如在10.0.11.151节点上运行：
# mkdir -p /etc/docker/certs.d/10.0.11.150:5000
# scp [email protected]:~/certs/domain.crt /etc/docker/certs.d/10.0.11.150:5000/ca.crt
# systemctl restart docker至此，Docker私有库搭建完成。
