内网centos服务器yum和docker使用代理服务器上网拉取资源

1、配置yum使用代理服务器，配置操作系统全局代理,添加如下配置

   vi  /etc/profile

export http_proxy=“http://192.168.20.11:9999”

   source  /etc/profile

指定用户使用可以添加到对应用户家目录的 .bash_profile

2、使用yum list测试是否正常，或者yum安装软件

[[email protected] ~]# yum list |more
Loaded plugins: fastestmirror, product-id, search-disabled-repos, subscription-
: manager
This system is not registered with an entitlement server. You can use subscription-manager to register.
Loading mirror speeds from cached hostfile

• base: mirror.bit.edu.cn
• extras: ftp.sjtu.edu.cn
• updates: ftp.sjtu.edu.cn
  Installed Packages
  NetworkManager.x86_64 1:1.18.4-3.el7 @anaconda
  NetworkManager-libnm.x86_64 1:1.18.4-3.el7 @anaconda
  NetworkManager-team.x86_64 1:1.18.4-3.el7 @anaconda
  NetworkManager-tui.x86_64 1:1.18.4-3.el7 @anaconda
  PyYAML.x86_64 3.10-11.el7 @base
  abrt.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-addon-ccpp.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-addon-kerneloops.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-addon-pstoreoops.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-addon-python.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-addon-vmcore.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-addon-xorg.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-cli.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-dbus.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-libs.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-python.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-retrace-client.x86_64 2.1.11-57.el7.centos @anaconda
  abrt-tui.x86_64 2.1.11-57.el7.centos @anaconda
  acl.x86_64 2.2.51-15.el7 @anaconda
  aic94xx-firmware.noarch 30-6.el7 @anaconda
  alsa-firmware.noarch 1.0.28-2.el7 @anaconda
  alsa-lib.x86_64 1.1.8-1.el7 @anaconda
  alsa-tools-firmware.x86_64 1.1.0-1.el7 @anaconda
  apr.x86_64 1.4.8-5.el7 @anaconda
  apr-util.x86_64 1.5.2-6.el7 @anaconda
  atomic-registries.x86_64 1:1.22.1-33.gitb507039.el7_8
  @extras
  audit.x86_64 2.8.5-4.el7 @anaconda
  audit-libs.x86_64 2.8.5-4.el7 @anaconda
  audit-libs-python.x86_64 2.8.5-4.el7 @base
  augeas-libs.x86_64 1.4.0-9.el7 @anaconda
  authconfig.x86_64 6.2.8-30.el7 @anaconda
  autoconf.noarch 2.69-11.el7 @anaconda
  automake.noarch 1.13.4-3.el7 @anaconda
  avahi-libs.x86_64 0.6.31-20.el7 @anaconda
  …………

3、docker配置http代理服务器

没有如下路径创建即可

 vi /etc/systemd/system/docker.service.d/http-proxy.conf

[Service] Environment=“HTTP_PROXY=http://192.168.20.11:9999” “NO_PROXY=localhost,127.0.0.1”

重新加载systemctl和重启docker

systemctl daemon-reload
systemctl restart docker

我本地http代理访问https需要证书，所以在docker pull时会报如下错误

docker: error response from daemon: get
https://registry-1.docker.io/v2/: x509: certificate signed by unknown
authority.

在如下路径/etc/docker/certs.d/创建registry-1.docker.io 文件夹，名称是上面报错误的网址，将ca证书放置到此路径下

[[email protected] registry-1.docker.io]# pwd
/etc/docker/certs.d/registry-1.docker.io
[[email protected] registry-1.docker.io]# ls
ca.crt

重启docker服务

systemctl  restart  docker

输入命令测试

docker pull centos

[[email protected] registry-1.docker.io]# docker pull hello-world
Using default tag: latest
Trying to pull repository docker.io/library/hello-world …
latest: Pulling from docker.io/library/hello-world
0e03bdcc26d7: Pull complete
Digest: sha256:4cf9c47f86df71d48364001ede3a4fcd85ae80ce02ebad74156906caff5378bc
Status: Downloaded newer image for docker.io/hello-world:latest