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This article mainly introduces "how to install docker on centos6.5". In daily operation, I believe many people have doubts about how to install docker on centos6.5. Xiaobian consulted various materials and sorted out simple and easy operation methods. I hope to help you answer the doubts of "how to install docker on centos6.5"! Next, please follow the small series to learn together!

1. Add sudo privileges to non-root users

·Switch to root

·Add write permission to sudo file, command is:

chmod u+w /etc/sudoers

·Editing sudoers files

vi /etc/sudoers

root ALL=(ALL) ALL,

Add $youruser ALL=(ALL) ALL below him

Here you can add any of the following four lines to sudoers

youuser ALL=(ALL) ALL

%youuser ALL=(ALL) ALL

youuser ALL=(ALL) NOPASSWD: ALL

%youuser ALL=(ALL) NOPASSWD: ALL

First line: Allows user youuser to execute sudo command (password required).

Line 2: Allows users in the user group youuser to execute sudo (password required).

Line 3: Allows user youuser to execute sudo without entering a password.

Line 4: Allows users in the youuser group to execute sudo without entering a password.

·Revoke sudoers file write permissions, command:

chmod u-w /etc/sudoers

2. Check if curl is installed

$ which curl

If not, execute the following command:

$ sudo apt-get update

$ sudo apt-get install curl

3. Get Docker Package

$ curl -fsSL https://get.docker.com/ | sh

Note here, if you don't have sudo permission, return wrong:

youruser is not in the sudoers file. This incident will be reported

My sudo is non-password-free, so if you execute curl directly, you'll get an error, but if you use sudo curl, you'll be fine.

4. Verify docker is installed successfully

docker run hello-world

According to the official website, this is OK, but the non-root user is not finished, it will appear

FATA[0000] Get http:///var/run/docker.sock/v1.18/containers/json? all=1: dial unix /var/run/docker.sock: no such file or directory. Are you trying to connect to a TLS-enabled daemon without TLS?

This is because docker has not been started yet.

Enter the command service docker status check and display:

Docker is stopped

Start by typing docker -d. If you continue to encounter errors, you will report a permission problem.

Type sudo docker -d or add youruser to the docker user group

Add youruser to docker user group

#Add docker user group $ sudo groupadd docker#Add yourself to docker user group $ sudo gpasswd -a myusername docker#Restart docker background service $ sudo service docker restart#Log out and log in again $ exit

docker: relocation error

What do you mean,docker's dependency library version is too low.

Execution: yum upgrade device-mapper-libs

Then type sudo docker -d to start successfully.

Open another command window and type sudo docker run hello-world

First execution returns:

nable to find image 'hello-world:latest' locally

latest: Pulling from hello-world

Don't worry, wait, the program will automatically download, download on the OK.

At this point, the study on "how to install docker on centos 6.5" is over, hoping to solve everyone's doubts. Theory and practice can better match to help everyone learn, go and try it! If you want to continue learning more relevant knowledge, please continue to pay attention to the website, Xiaobian will continue to strive to bring more practical articles for everyone!

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