docker 配置 CA验证

蔚落 2021-12-19 03:45 381阅读 0赞

[https://blog.csdn.net/ChineseYoung/article/details/83107353][https_blog.csdn.net_ChineseYoung_article_details_83107353]

环境：IntelliJ IDEA 2018.1.6 x64、CentOS 7

一、无CA认证  
1、修改服务器配置，开放Docker的远程连接访问  
\[root@localhost ~\]\# vim /usr/lib/systemd/system/docker.service   
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将ExecStart属性value值改为  
/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock

2、重启docker  
\[root@localhost ~\]\# systemctl daemon-reload   
\[root@localhost ~\]\# systemctl restart docker

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3、开放防火墙2375端口  
\[root@localhost ~\]\# /sbin/iptables -I INPUT -p tcp --dport 2375 -j ACCEPT  
\[root@localhost ~\]\# iptables-save  
\# Generated by iptables-save v1.4.21 on Wed Oct 17 09:33:07 2018  
\*nat  
:PREROUTING ACCEPT \[31:5206\]  
:INPUT ACCEPT \[31:5206\]  
:OUTPUT ACCEPT \[4:304\]  
:POSTROUTING ACCEPT \[4:304\]  
:DOCKER - \[0:0\]  
\-A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER  
\-A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER  
\-A POSTROUTING -s 172.17.0.0/16 ! -o docker0 -j MASQUERADE  
\-A DOCKER -i docker0 -j RETURN  
COMMIT  
\# Completed on Wed Oct 17 09:33:07 2018  
\# Generated by iptables-save v1.4.21 on Wed Oct 17 09:33:07 2018  
\*filter  
:INPUT ACCEPT \[24:4973\]  
:FORWARD DROP \[0:0\]  
:OUTPUT ACCEPT \[3:340\]  
:DOCKER - \[0:0\]  
:DOCKER-ISOLATION-STAGE-1 - \[0:0\]  
:DOCKER-ISOLATION-STAGE-2 - \[0:0\]  
:DOCKER-USER - \[0:0\]  
\-A INPUT -p tcp -m tcp --dport 2375 -j ACCEPT  
\-A FORWARD -j DOCKER-USER  
\-A FORWARD -j DOCKER-ISOLATION-STAGE-1  
\-A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT  
\-A FORWARD -o docker0 -j DOCKER  
\-A FORWARD -i docker0 ! -o docker0 -j ACCEPT  
\-A FORWARD -i docker0 -o docker0 -j ACCEPT  
\-A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2  
\-A DOCKER-ISOLATION-STAGE-1 -j RETURN  
\-A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP  
\-A DOCKER-ISOLATION-STAGE-2 -j RETURN  
\-A DOCKER-USER -j RETURN  
COMMIT  
\# Completed on Wed Oct 17 09:33:07 2018

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4、随便写个接口，等会进行测试

5、idea安装docker integration插件

插件安装完成重启idea后可以看到底部多了个docker标志

5、接下来给项目打成jar包

6、然后编写DockerFile  
我这里找了个相对比较小的jdk，是在官方镜像库找到的

也可以在国内的镜像库里找，如：FROM hub.c.163.com/library/java:8-jre

FROM 99taxis/mini-java8

ADD target/\*.jar idea-docker-deploy.jar

EXPOSE 8765

ENTRYPOINT \["java", "-jar", "idea-docker-deploy.jar"\]  
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项目右键新建一个没有后缀的File

7、接下来配置idea一键部署

选中第一个

如图进行填写

8、运行容器

可以看到相应的日志

9、访问接口

成功  
也可以在服务器上打命令查看  
\[root@localhost ~\]\# docker images  
REPOSITORY                                             TAG                 IMAGE ID            CREATED             SIZE  
idea-docker-deploy                                     latest              0b9861752b28        11 minutes ago      210MB  
registry.cn-hangzhou.aliyuncs.com/zhaoyoung/mycentos   1.1                 de8fc9f45769        26 hours ago        455MB  
mycentos                                               1.1                 de8fc9f45769        26 hours ago        455MB  
zhaoyoungtomcat9                                       latest              124517434916        45 hours ago        751MB  
myip\_son                                               latest              6c9507aea358        3 days ago          398MB  
myip\_father                                            latest              2c22e721607a        3 days ago          299MB  
myip2                                                  latest              dcbb4656e640        3 days ago          299MB  
myip                                                   latest              9e3c14f76b1d        3 days ago          299MB  
mycentos                                               1.0                 c2d4f6acb9af        4 days ago          455MB  
zhaoyoung/nodocstomcat                                 1.0                 84498728984a        6 days ago          463MB  
centos                                                 latest              75835a67d134        7 days ago          200MB  
redis                                                  3.2                 a17eb18b1c62        2 weeks ago         76MB  
tomcat                                                 latest              41a54fe1f79d        4 weeks ago         463MB  
hello-world                                            latest              4ab4c602aa5e        5 weeks ago         1.84kB  
mysql                                                  5.6                 1f47fade220d        6 weeks ago         256MB  
99taxis/mini-java8                                     latest              45f8a8f0a77a        16 months ago       194MB

\[root@localhost ~\]\# docker ps  
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES  
3f9cc9e975bb        0b9861752b28        "java -jar idea-dock…"   11 minutes ago      Up 11 minutes       0.0.0.0:8765->8765/tcp   idea-docker-deploy

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二、Docker CA认证  
前面提到的配置是允许所有人都可以访问的，因为docker默认是root权限的，你把2375端口暴露在外面，意味着别人随时都可以提取到你服务器的root权限，是很容易被黑客黑的，因此,docker官方推荐使用加密的tcp连接，以Https的方式与客户端建立连接

官方demo  
1、创建ca文件夹，存放CA私钥和公钥  
\[root@localhost ~\]\# mkdir -p /usr/local/ca  
\[root@localhost ~\]\# cd /usr/local/ca/

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2、创建密码  
需要连续输入两次相同的密码

\[root@localhost ca\]\# openssl genrsa -aes256 -out ca-key.pem 4096  
Generating RSA private key, 4096 bit long modulus  
...................++  
..........................................................................................................................................................................................................................................................................................................................................................++  
e is 65537 (0x10001)  
Enter pass phrase for ca-key.pem:  
Verifying - Enter pass phrase for ca-key.pem:

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3、依次输入密码、国家、省、市、组织名称等  
\[root@localhost ca\]\# openssl req -new -x509 -days 365 -key ca-key.pem -sha256 -out ca.pem  
Enter pass phrase for ca-key.pem:  
Enter pass phrase for ca-key.pem:  
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) \[XX\]:CN  
State or Province Name (full name) \[\]:zj  
Locality Name (eg, city) \[Default City\]:hz  
Organization Name (eg, company) \[Default Company Ltd\]:qdsg  
Organizational Unit Name (eg, section) \[\]:qdsg  
Common Name (eg, your name or your server's hostname) \[\]:qdsg  
Email Address \[\]:1@qq.com  
\[root@localhost ca\]\# openssl genrsa -out server-key.pem 4096  
Generating RSA private key, 4096 bit long modulus  
...........................++  
................++  
e is 65537 (0x10001)

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4、生成server-key.pem  
\[root@localhost ca\]\# openssl genrsa -out server-key.pem 4096  
Generating RSA private key, 4096 bit long modulus  
.................................................................................................................................................++  
.................................................++  
e is 65537 (0x10001)

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5、把下面的$Host换成你自己服务器外网的IP或者域名  
openssl req -subj "/CN=$HOST" -sha256 -new -key server-key.pem -out server.csr  
比如  
openssl req -subj "/CN=192.168.1.106" -sha256 -new -key server-key.pem -out server.csr  
或  
openssl req -subj "/CN=www.baidu.com" -sha256 -new -key server-key.pem -out server.csr

我这里使用局域网进行测试

\[root@localhost ca\]\# openssl req -subj "/CN=192.168.1.106" -sha256 -new -key server-key.pem -out server.csr

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6、配置白名单  
也就是你接下来要允许那些ip可以连接到服务器的docker，因为已经是ssl连接，所以我推荐配置0.0.0.0,也就是所有ip都可以连接(但只有拥有证书的才可以连接成功)，这样配置好之后公司其他人也可以使用。如果你不想这样，那你可以配置ip，用逗号分隔开。下面的$Host依旧是你服务器外网的IP或者域名，请自行替换。

注意！！！！这里我踩了坑  
如果你填写的是ip地址的话命令如下echo subjectAltName = IP:$HOST,IP:0.0.0.0 >> extfile.cnf  
如果你填写的是域名的话命令如下 echo subjectAltName = DNS:$HOST,IP:0.0.0.0 >> extfile.cnf  
我这里使用局域网进行测试

\[root@localhost ca\]\# echo subjectAltName = IP:192.168.1.106,IP:0.0.0.0 >> extfile.cnf

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7、执行命令，将Docker守护程序密钥的扩展使用属性设置为仅用于服务器身份验证  
\[root@localhost ca\]\# echo extendedKeyUsage = serverAuth >> extfile.cnf

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8、执行命令，并输入之前设置的密码，生成签名证书  
\[root@localhost ca\]\# openssl x509 -req -days 365 -sha256 -in server.csr -CA ca.pem -CAkey ca-key.pem \\-CAcreateserial -out server-cert.pem -extfile extfile.cnf  
Signature ok  
subject=/CN=192.168.1.106  
Getting CA Private Key  
Enter pass phrase for ca-key.pem:

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9、生成客户端的key.pem，到时候把生成好的几个公钥私钥拷出去即可  
\[root@localhost ca\]\# openssl genrsa -out key.pem 4096  
Generating RSA private key, 4096 bit long modulus  
...........................................................................................................................................................................................................................................................................................................................................................................++  
......................................................................................................................................++  
e is 65537 (0x10001)

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10、执行命令  
\[root@localhost ca\]\# openssl req -subj '/CN=client' -new -key key.pem -out client.csr

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11、执行命令，要使密钥适合客户端身份验证，请创建扩展配置文件  
\[root@localhost ca\]\# echo extendedKeyUsage = clientAuth >> extfile.cnf

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12、生成cert.pem,需要输入前面设置的密码，生成签名证书  
\[root@localhost ca\]\# openssl x509 -req -days 365 -sha256 -in client.csr -CA ca.pem -CAkey ca-key.pem \\-CAcreateserial -out cert.pem -extfile extfile.cnf  
Signature ok  
subject=/CN=client  
Getting CA Private Key  
Enter pass phrase for ca-key.pem:

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13、删除不需要的文件，两个证书签名请求  
\[root@localhost ca\]\# rm -v client.csr server.csr  
rm：是否删除普通文件 "client.csr"？y  
已删除"client.csr"

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14、修改权限，要保护您的密钥免受意外损坏，请删除其写入权限。要使它们只能被您读取，更改文件模式  
\[root@localhost ca\]\# chmod -v 0400 ca-key.pem key.pem server-key.pem  
mode of "ca-key.pem" changed from 0644 (rw-r--r--) to 0400 (r--------)  
mode of "key.pem" changed from 0644 (rw-r--r--) to 0400 (r--------)  
mode of "server-key.pem" changed from 0644 (rw-r--r--) to 0400 (r--------)

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证书可以是对外可读的，删除写入权限以防止意外损坏  
\[root@localhost ca\]\# chmod -v 0444 ca.pem server-cert.pem cert.pem  
mode of "ca.pem" changed from 0644 (rw-r--r--) to 0444 (r--r--r--)  
mode of "server-cert.pem" changed from 0644 (rw-r--r--) to 0444 (r--r--r--)  
mode of "cert.pem" changed from 0644 (rw-r--r--) to 0444 (r--r--r--)

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15、归集服务器证书  
\[root@localhost ca\]\# cp server-\*.pem  /etc/docker/  
\[root@localhost ca\]\# cp ca.pem /etc/docker/

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16、修改Docker配置，使Docker守护程序仅接受来自提供CA信任的证书的客户端的连接  
\[root@localhost ca\]\# vim /lib/systemd/system/docker.service

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将  
ExecStart=/usr/bin/dockerd  
替换为：

ExecStart=/usr/bin/dockerd --tlsverify --tlscacert=/etc/docker/ca.pem --tlscert=/etc/docker/server-cert.pem --tlskey=/etc/docker/server-key.pem -H tcp://0.0.0.0:2376 -H unix:///var/run/docker.sock

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17、重新加载daemon并重启docker  
\[root@localhost ~\]\# systemctl daemon-reload   
\[root@localhost ~\]\# systemctl restart docker  
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18、开放2376端口  
\[root@localhost ca\]\# /sbin/iptables -I INPUT -p tcp --dport 2376 -j ACCEPT  
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\[root@localhost ca\]\# iptables-save  
\# Generated by iptables-save v1.4.21 on Wed Oct 17 14:47:38 2018  
\*nat  
:PREROUTING ACCEPT \[225:14836\]  
:INPUT ACCEPT \[225:14836\]  
:OUTPUT ACCEPT \[1:76\]  
:POSTROUTING ACCEPT \[1:76\]  
:DOCKER - \[0:0\]  
\-A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER  
\-A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER  
\-A POSTROUTING -s 172.17.0.0/16 ! -o docker0 -j MASQUERADE  
\-A DOCKER -i docker0 -j RETURN  
COMMIT  
\# Completed on Wed Oct 17 14:47:38 2018  
\# Generated by iptables-save v1.4.21 on Wed Oct 17 14:47:38 2018  
\*filter  
:INPUT ACCEPT \[8:2858\]  
:FORWARD DROP \[0:0\]  
:OUTPUT ACCEPT \[39:30400\]  
:DOCKER - \[0:0\]  
:DOCKER-ISOLATION-STAGE-1 - \[0:0\]  
:DOCKER-ISOLATION-STAGE-2 - \[0:0\]  
:DOCKER-USER - \[0:0\]  
\-A INPUT -p tcp -m tcp --dport 2376 -j ACCEPT  
\-A INPUT -p tcp -m tcp --dport 2375 -j ACCEPT  
\-A FORWARD -j DOCKER-USER  
\-A FORWARD -j DOCKER-ISOLATION-STAGE-1  
\-A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT  
\-A FORWARD -o docker0 -j DOCKER  
\-A FORWARD -i docker0 ! -o docker0 -j ACCEPT  
\-A FORWARD -i docker0 -o docker0 -j ACCEPT  
\-A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2  
\-A DOCKER-ISOLATION-STAGE-1 -j RETURN  
\-A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP  
\-A DOCKER-ISOLATION-STAGE-2 -j RETURN  
\-A DOCKER-USER -j RETURN  
COMMIT  
\# Completed on Wed Oct 17 14:47:38 2018

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19、重启docker  
\[root@localhost ca\]\# service docker restart

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20、保存相关客户端的pem文件到本地

21、idea的配置

22、若出现以下错误，请查看前面的步骤是否遗漏或出错

本文借鉴同事的博客，并以自己的实践进行记录，感谢同事~  
\---------------------   
作者：一个善良的码农   
来源：CSDN   
原文：https://blog.csdn.net/ChineseYoung/article/details/83107353   
版权声明：本文为博主原创文章，转载请附上博文链接！

[https_blog.csdn.net_ChineseYoung_article_details_83107353]: https://blog.csdn.net/ChineseYoung/article/details/83107353