1, Target
Make it can pull google docker image. By default Kubernetes looks in the public Docker registry to find images。
2, Create and Enable Swap file The filesize of swap space is 2048k(2GB).
dd if=/dev/zero of=/swapfile bs=1024 count=2048k
mkswap /swapfile
swapon /swapfile
3, Make it as scripts
#!/bin/bash
# enable-docker-proxy
# ENV: CentOS 7
mkdir -p /etc/systemd/system/docker.service.d
echo "[Service]" >> /etc/systemd/system/docker.service.d/http-proxy.conf
echo "Environment='HTTP_PROXY=http://proxy.exyum.com:7777/'" >> /etc/systemd/system/docker.service.d/http-proxy.conf
# FOR HTTPS: Environment="HTTPS_PROXY=https://proxy.example.com:443/";
# FOR REGISTRY: Environment="HTTP_PROXY=http://proxy.example.com:80/"; "NO_PROXY=localhost,127.0.0.1,docker-registry.somecorporation.com"
systemctl daemon-reload
systemctl restart docker
systemctl show --property=Environment docker
4, Enable it on ~/.bashrc file
function enable-docker-proxy(){
mkdir -p /etc/systemd/system/docker.service.d
echo "[Service]" >> /etc/systemd/system/docker.service.d/http-proxy.conf
echo "Environment='HTTP_PROXY=http://proxy.example.com:7777/'" >> /etc/systemd/system/docker.service.d/http-proxy.conf
systemctl daemon-reload
systemctl restart docker
systemctl show --property=Environment docker
}
function disable-docker-proxy(){
rm -f /etc/systemd/system/docker.service.d/http-proxy.conf
systemctl daemon-reload
systemctl restart docker
systemctl show --property=Environment docker
}
then use enable-docker-proxy to enable proxy,vice.
end