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HowTo Install Docker on CentOS 6.x

· 2 min read

1. Add the EPEL Repository

rpm -iUvh

2. Update your system

yum update -y

3. Install

yum install -y docker-io

4. Configure

service docker start
chkconfig docker on

docker info

5. Download a Docker Container

docker pull centos

6. Run a Docker Container

docker run -i -t centos /bin/bash

7. Find Docker Container

docker search ubuntu


1. Faild to start docker on CentOS 6.x

***/usr/bin/docker: relocation error: /usr/bin/docker: symbol dm_task_get_info_with_deferred_remove, version Base not defined in file with link time reference***

the lib-device-mapper that you have isn't exporting a symbol ("Base") that Docker needs.
this by upgrading lib-device-mapper to version 1.02.90.

# You may have to enable the public_ol6_latest repo in order to get this package.
sudo yum-config-manager --enable public_ol6_latest
sudo yum install device-mapper-event-libs

2. Faild to use docker

***Get <http:///var/run/docker.sock/v1.19/info>: 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 no restart ok.

pkill -9 docker && service docker start

3. HowTo save 'docker run -i -t xxx /bin/bash'

docker ps -l
docker commit ID newname
docker images