Linux command line proxy configuration
If your system placed in the restricted network and it require to connect Internet through proxy server then you need to setup proxy server configuration by exporting http_proxy or https_proxy linux environment value.
syntax :
export http_proxy=http://username:password@proxyserver:proxyport
export https_proxy=https://username:password@proxyserver:proxyport
example:
export http_proxy=http://kamal:kamal@myproxy.mynetwork.com:8080
export https_proxy=http://kamal:kamal@myproxy.mynetwork.com:8443
if you want to revert http_proxy config then simply type $unset http_proxy from linux command prompt .
Docker proxy configuration
Same way you need to setup proxy configuration for docker too so that you can download / search / push / pull docker images from public docker registry.
by default docker wont take proxy config from environment variable you need to config by creating http-proxy.config file in the docker service directory.
1) Create a directory path and config file as a root user ( remember your user need to be a member of docker group or you must be a root user to perform this docker config by default directory and configuration file doesn't exist )
# mkdir -p /etc/systemd/system/docker.service.d
vi /etc/systemd/system/docker.service.d/http-proxy.conf or #vi /etc/systemd/system/docker.service.d/https-proxy.conf
2) Edit docker proxy config file
#vi /etc/systemd/system/docker.service.d/https-proxy.conf
[Service]
Environment="HTTP_PROXY=http://kamal:durai@proxy.myserver.com:8080"
3)Reload systems daemon configurations
#systemctl daemon-reload
4) Restart docker service
#systemctl restart docker
5) Verify docker proxy config
#systemctl show --property=Environment docker
6) Search docker images from docker registry
#docker search nginx
now you can see number of nginx docker iamges from varies registry
