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Docker : Install
2017/07/30 |
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Install Docker which is the Operating System-Level Virtualization Tool, which automates the deployment of applications inside Containers.
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| [1] | Install Docker. |
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[root@dlp ~]#
[root@dlp ~]# dnf -y install docker
systemctl start docker [root@dlp ~]# systemctl enable docker |
| [2] | Download an official image and create a Container and output the words [Welcome to the Docker World] inside the Container. |
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# download the image [root@dlp ~]# docker pull fedora Using default tag: latest Trying to pull repository registry.fedoraproject.org/fedora ..... ..... # run echo inside Container [root@dlp ~]# docker run fedora /bin/echo "Welcome to the Docker World" Welcome to the Docker World |
| [3] | Connect to the interactive session of a Container with [i] and [t] option like follows. If exit from the Container session, the process of a Container finishes. |
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[root@dlp ~]#
[root@3bbfa01408ff /]# docker run -i -t fedora /bin/bash [root@3bbfa01408ff /]# # Container's console
uname -a Linux 3bbfa01408ff 4.11.9-300.fc26.x86_64 #1 SMP Wed Jul 5 16:21:56 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux [root@3bbfa01408ff /]# exit exit [root@dlp ~]# # back
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| [4] | If exit from the Container session with keeping container's process, push [Ctrl+p] and [Ctrl+q] key. |
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[root@dlp ~]#
docker run -i -t fedora /bin/bash [root@86c57db58a2f /]# [root@dlp ~]# # Ctrl+p, Ctrl+q
# show docker process [root@dlp ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 86c57db58a2f fedora "/bin/bash" 40 seconds ago Up 39 seconds elastic_euclid # connect to container's session [root@dlp ~]# docker exec -it 86c57db58a2f /bin/bash [root@86c57db58a2f /]# # connected
# shutdown container's process from Host's console [root@dlp ~]# docker kill 86c57db58a2f [root@dlp ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES |