Set Docker_Opts in centos

Question

I need to set docker to listen to tcp://0.0.0.0/4243 on my host machine running amazon linux (centos). All the documentation I have seen has told me to run the following command

Answer 1

With Docker 1.7.1 on CentOS 7 neither modifying /usr/lib/systemd/system/docker.service or /etc/sysconfig/docker worked for me. It seems that in systemd sets up the socket, so in order to change the group you have to edit SocketGroup in /usr/lib/systemd/system/docker.socket

[Unit]
Description=Docker Socket for the API
PartOf=docker.service

[Socket]
ListenStream=/var/run/docker.sock
SocketMode=0660
SocketUser=root
SocketGroup=jenkins

[Install]
WantedBy=sockets.target