docker与containerd配置http代理

在执行docker pull时，是由守护进程dockerd来执行。因此，代理需要配在dockerd的环境中。而这个环境，则是受systemd所管控，因此实际是systemd的配置。containerd也不例外。

docker版：

#设置代理
mkdir -p /etc/systemd/system/docker.service.d
touch /etc/systemd/system/docker.service.d/proxy.conf
tee /etc/systemd/system/containerd.service.d/proxy.conf << EOF
[Service]
Environment="HTTP_PROXY=http://proxy.example.com:8080/"
Environment="HTTPS_PROXY=http://proxy.example.com:8080/"
Environment="NO_PROXY=localhost,127.0.0.1,.example.com"
EOF

#重新加载
systemctl daemon-reload

#查看最新配置
systemctl show --property Environment docker

#重启docker，让配置生效
systemctl restart docker

#查看代理配置
docker info | grep Proxy

containerd版：

#设置代理
mkdir -p /etc/systemd/system/containerd.service.d 
touch /etc/systemd/system/containerd.service.d/http-proxy.conf 
tee /etc/systemd/system/containerd.service.d/http-proxy.conf << EOF 
[Service] 
Environment="HTTP_PROXY=http://IP:Port" 
Environment="HTTPS_PROXY=http://IP:Port" 
Environment="NO_PROXY=localhost,127.0.0.1,containerd,172.25.0.0/16" 
EOF

#重新加载
systemctl daemon-reexec
systemctl daemon-reload

#重启应用
systemctl restart containerd

#验证代理是否生效
systemctl show containerd | grep -i proxy