ObjectiveThe objective is to install Docker engine on Redhat 7 Linux using native docker script.
RequirementsInternet connection as well as a privileged access to your Redhat 7 Linux is required.
- # - requires given command to be executed with root privileges either directly as a root user or by use of
- $ - given command to be executed as a regular non-privileged user
Install dockerInstallation of docker using a native docker script is one command, straight forward process. Before you run the below docker installation command ensure that
curlpackage is installed on your system:
# curl --version curl 7.29.0 (x86_64-redhat-linux-gnu)Once ready, install docker using
curlcommand which will download and execute a native docker installation script:
# curl -sSL https://get.docker.com/ | sh + sh -c 'sleep 3; yum -y -q install docker-engine' warning: /var/cache/yum/x86_64/7Server/docker-main-repo/packages/docker-engine-1.12.3-1.el7.centos.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 2c52609d: NOKEY Importing GPG key 0x2C52609D: Userid : "Docker Release Tool (releasedocker)
" Fingerprint: 5811 8e89 f3a9 1289 7c07 0adb f762 2157 2c52 609d From : https://yum.dockerproject.org/gpg If you would like to use Docker as a non-root user, you should now consider adding your user to the "docker" group with something like: sudo usermod -aG docker your-user Remember that you will have to log out and back in for this to take effect!
Enable and Start dockerTo enable docker to start on your Redhat 7 Linux after reboot run the following command:
# systemctl enable docker Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.To start docker daemon run:
# systemctl start docker
TestingTo test docker installation run:
# docker run hello-world Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world c04b14da8d14: Pull complete Digest: sha256:0256e8a36e2070f7bf2d0b0763dbabdd67798512411de4cdcf9431a1feb60fd9 Status: Downloaded newer image for hello-world:latest Hello from Docker! This message shows that your installation appears to be working correctly.You can list your new container with:
# docker ps -a