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服务器之家 - 服务器技术 - 服务器知识 - Centos 7中Docker私有仓库的搭建方法

Centos 7中Docker私有仓库的搭建方法

2021-01-20 18:52Linux公社 服务器知识

本篇文章主要介绍了Centos 7中Docker私有仓库的搭建方法,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧

系统配置: CentOS 7 内核 3.10.0-229.20.1.el7.x86_64 Docker version 1.8.2

运行 docker registry

执行下列命令:

 

复制代码 代码如下:

docker run /     -d /     --name private_registry  --restart=always /     -e SETTINGS_FLAVOUR=dev /     -e STORAGE_PATH=/registry-storage /     -v /data/docker/private-registry/storage:/registry-storage /     -u root /     -p 5000:5000 /     registry:2

 

 

如果本地已有registry镜像,它会直接运行,否则它会到docker hub共有仓库下载之后再运行, -v /data/docker/private-registry/storage:/registry-storage 该命令将之后私有仓库的镜像存放到本地。

之后执行:

 

复制代码 代码如下:

docker tag docker.io/docker:1.8 192.168.100.9:5000/docker:1.8  docker push 192.168.100.9:5000/docker:1.8

 

 

这时会报很多错误:

 

复制代码 代码如下:

FATA[0000] Error response from daemon: v1 ping attempt failed with error: Get https://192.168.100.9:5000/v1/_ping: tls: oversized record received with length 20527/.  If this private registry supports only HTTP or HTTPS with an unknown CA certificate,please add  `--insecure-registry 192.168.100.9:5000` to the daemon's arguments. In the case of HTTPS, if you have access to the registry's CA certificate, no need for the flag; simply place the CA certificate at /etc/docker/certs.d/192.168.100.9:5000/ca.crt

 

 

最简单的解决方法是修改 /etc/sysconfig/docker 文件添加 INSECURE_REGISTRY='--insecure-registry 192.168.100.9:5000' , Ubuntu 14.04 的配置文件在 /etc/default/docker 在该文件里添加 DOCKER_OPTS="--insecure-registry 192.168.100.9:5000" ,添加过之后重启 docker ,重新运行 docker registry 即可生效。这样做的缺点是你的私有仓库不安全,其次,其他要下载或者上传镜像的机器都要修改相应的配置文件。

安全的做法是去认证机构购买签名证书,在此我们使用自认证的方式。

自签名认证

首先执行:

 

复制代码 代码如下:

# mkdir -p certs && openssl req /   -newkey rsa:4096 -nodes -sha256 -keyout certs/domain.key /   -x509 -days 365 -out certs/domain.crt  Country Name (2 letter code) [AU]:CN State or Province Name (full name) [Some-State]:Beijing Locality Name (eg, city) []:Beijing Organization Name (eg, company) [Internet Widgits Pty Ltd]:SERCXTYF Organizational Unit Name (eg, section) []:IT Common Name (e.g. server FQDN or YOUR name) []:192.168.100.9:5000 Email Address []:xxx.yyy@ymail.com

 

 

生成认证证书和密钥。接下来将刚生成的 certs/domain.crt 复制到 /etc/docker/certs.d/192.168.100.9:5000/ca.crt ,之后重启 docker 并运行:

 

复制代码 代码如下:

docker run /     -d /     --name private_registry  --restart=always /     -e SETTINGS_FLAVOUR=dev /     -e STORAGE_PATH=/registry-storage /     -v /data/docker/private-registry/storage:/registry-storage /     -u root /     -p 5000:5000 /     -v /root/certs:/certs /     -e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/domain.crt /     -e REGISTRY_HTTP_TLS_KEY=/certs/domain.key /     registry:2

 

 

这样之后应该可以成功了吧,于是执行:

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1
# docker push 192.168.100.9:5000/docker:1.8

结果它还是报错了:

 

复制代码 代码如下:

The push refers to a repository 192.168.100.9:5000/docker:1.8 unable to ping registry endpoint https://192.168.100.9:5000/v0/ v2 ping attempt failed with error: Get https://192.168.100.9:5000/v2/: x509: cannot validate certificate for 192.168.100.9 because it doesn't contain any IP SANs v1 ping attempt failed with error: Get https://192.168.100.9:5000/v1/_ping: x509: cannot validate certificate for 192.168.100.9 because it doesn't contain any IP SANs

 

 

解决方法:修改 /etc/pki/tls/openssl.cnf 配置,在该文件中找到 [ v3_ca ] ,在它下面添加如下内容:

 

复制代码 代码如下:

[ v3_ca ] # Extensions for a typical CA subjectAltName = IP:123.56.157.144

 

 

之后再次重启docker,并重新 run registry ,启动成功之后,执行:

 

复制代码 代码如下:

# docker push 192.168.100.9:5000/docker:1.8  The push refers to a repository [192.168.100.9:5000/docker] (len: 1) 793ab2f3d322: Pushed  e1232be51d09: Pushed  71ef33d4e0e5: Pushed  e9d235d200dc: Pushed  3fb9a265fbfc: Pushed  9f50b4b1f00b: Pushed  413668359dd0: Pushed  da0daae25b21: Pushed  f4fddc471ec2: Pushed  1.8: digest: sha256:28a02a8a50b750a300904b53e802bdf76516d591b2d233ae21cf771b8c776d44 size: 17621

 

 

至此,上传终于成功。换台机器下载刚上传的镜像:

 

复制代码 代码如下:

# docker pull  192.168.100.9:5000/docker:1.8  Trying to pull repository 192.168.100.9:5000/docker ... failed unable to ping registry endpoint https://192.168.100.9:5000/v0/ v2 ping attempt failed with error: Get https://192.168.100.9:5000/v2/: x509: certificate signed by unknown authority  v1 ping attempt failed with error: Get https://192.168.100.9:5000/v1/_ping: x509: certificate signed by unknown authority

 

 

仔细分析错误信息,发现是没有证书,将在 192.168.100.9 上生成的证书拷贝到相应的目录下 /etc/docker/certs.d/192.168.100.9:5000/ca.crt ,拷贝之后重启 docker ,再次执行:

 

复制代码 代码如下:

# docker pull  192.168.100.9:5000/docker:1.8  1.8: Pulling from docker 9d58b928bc15: Pull complete  dbe7e8a7807c: Pull complete  ce14982b73d4: Pull complete  b9f70905d763: Pull complete  b9c93a2fb3cf: Pull complete  1321a4d5d3ea: Pull complete  5941048a7e27: Pull complete  f57edf7c2e71: Pull complete  5de2ade00f1b: Pull complete  Digest: sha256:28a02a8a50b750a300904b53e802bdf76516d591b2d233ae21cf771b8c776d44 Status: Downloaded newer image for 192.168.100.9:5000/docker:1.8

 

 

至此, docker registry 私有仓库安装成功。如果要部署到生产环境还需要进一步的配置,具体可以参考Registry Configuration Reference

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。

原文链接:http://www.tuicool.com/articles/v6N7fiB

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