Docker uses timeline as version number after version 1.13, which is divided into community version CE and enterprise version EE.
The community version is free for individual developers and small groups. The enterprise version will provide additional charging services, such as infrastructure, containers, plug-ins, etc. that have been officially tested and certified.
The community version is released in two ways: stable and edge. The stable version is updated quarterly, such as 18.03 and 18.06. The edge version is updated monthly, such as 18.06 and 18.07.
Docker installation
- Docker requires the kernel version of CentOS system to be higher than 3.10. Check the prerequisites on this page to verify whether your CentOS version supports docker.
Check your current kernel version with the uname -r command
[root@ecs-a30e-0002 ~]# uname -r
3.10.0-693.11.1.el7.x86_64- Log in to Centos with root privileges. Make sure the yum package is updated to the latest.
[root@ecs-a30e-0002 ~]# yum update- Uninstall the old version (if the old version has been installed)
[root@ecs-a30e-0002 ~]# yum remove docker docker-common docker-selinux docker-engine- Install the required software package. Yum util provides the function of Yum config manager. The other two are dependent on the device mapper driver
[root@ecs-a30e-0002 ~]# yum install -y yum-utils device-mapper-persistent-data lvm2- Set the yum source of docker
[root@ecs-a30e-0002 ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
- You can view all docker versions in all warehouses and select a specific version to install
[root@ecs-a30e-0002 ~]# yum list docker-ce --showduplicates | sort -r
* updates: mirror.bit.edu.cn
Loading mirror speeds from cached hostfile
Loaded plugins: fastestmirror
* extras: mirrors.huaweicloud.com
* epel: mirrors.huaweicloud.com
docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable
docker-ce.x86_64 18.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 18.03.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.12.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.09.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.06.0.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.3.ce-1.el7 docker-ce-stable
docker-ce.x86_64 17.03.2.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.1.ce-1.el7.centos docker-ce-stable
docker-ce.x86_64 17.03.0.ce-1.el7.centos docker-ce-stable
* base: mirror.bit.edu.cn
Available Packages
- Install docker
$ sudo yum install docker-ce #Since only stable warehouse is opened in repo by default, the latest stable version 17.12.0 is installed here
[root@ecs-a30e-0002 ~]# yum install docker-ce
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirror.bit.edu.cn
* epel: mirrors.huaweicloud.com
* extras: mirrors.huaweicloud.com
* updates: mirror.bit.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package docker-ce.x86_64 0:18.06.1.ce-3.el7 will be installed
--> Processing Dependency: container-selinux >= 2.9 for package: docker-ce-18.06.1.ce-3.el7.x86_64
--> Processing Dependency: libseccomp >= 2.3 for package: docker-ce-18.06.1.ce-3.el7.x86_64
--> Processing Dependency: libseccomp.so.2()(64bit) for package: docker-ce-18.06.1.ce-3.el7.x86_64
--> Processing Dependency: libltdl.so.7()(64bit) for package: docker-ce-18.06.1.ce-3.el7.x86_64
--> Running transaction check
---> Package container-selinux.noarch 2:2.68-1.el7 will be installed
---> Package libseccomp.x86_64 0:2.3.1-3.el7 will be installed
---> Package libtool-ltdl.x86_64 0:2.4.2-22.el7_3 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
====================================================================================================================================================================
Package Arch Version Repository Size
====================================================================================================================================================================
Installing:
docker-ce x86_64 18.06.1.ce-3.el7 docker-ce-stable 41 M
Installing for dependencies:
container-selinux noarch 2:2.68-1.el7 extras 36 k
libseccomp x86_64 2.3.1-3.el7 base 56 k
libtool-ltdl x86_64 2.4.2-22.el7_3 base 49 k
Transaction Summary
====================================================================================================================================================================
Install 1 Package (+3 Dependent packages)
Total download size: 41 M
Installed size: 41 M
Is this ok [y/d/N]: y
Downloading packages:
(1/4): container-selinux-2.68-1.el7.noarch.rpm | 36 kB 00:00:00
(2/4): libtool-ltdl-2.4.2-22.el7_3.x86_64.rpm | 49 kB 00:00:00
(3/4): libseccomp-2.3.1-3.el7.x86_64.rpm | 56 kB 00:00:00
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-18.06.1.ce-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY0:00:00 ETA
Public key for docker-ce-18.06.1.ce-3.el7.x86_64.rpm is not installed
(4/4): docker-ce-18.06.1.ce-3.el7.x86_64.rpm | 41 MB 00:13:30
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 52 kB/s | 41 MB 00:13:30
Retrieving key from https://download.docker.com/linux/centos/gpg
Importing GPG key 0x621E9F35:
Userid : "Docker Release (CE rpm) <docker@docker.com>"
Fingerprint: 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
From : https://download.docker.com/linux/centos/gpg
Is this ok [y/N]: y
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : libseccomp-2.3.1-3.el7.x86_64 1/4
Installing : 2:container-selinux-2.68-1.el7.noarch 2/4
setsebool: SELinux is disabled.
Installing : libtool-ltdl-2.4.2-22.el7_3.x86_64 3/4
Installing : docker-ce-18.06.1.ce-3.el7.x86_64 4/4
Verifying : docker-ce-18.06.1.ce-3.el7.x86_64 1/4
Verifying : libtool-ltdl-2.4.2-22.el7_3.x86_64 2/4
Verifying : 2:container-selinux-2.68-1.el7.noarch 3/4
Verifying : libseccomp-2.3.1-3.el7.x86_64 4/4
Installed:
docker-ce.x86_64 0:18.06.1.ce-3.el7
Dependency Installed:
container-selinux.noarch 2:2.68-1.el7 libseccomp.x86_64 0:2.3.1-3.el7 libtool-ltdl.x86_64 0:2.4.2-22.el7_3
Complete!
- Start up and join start up
[root@ecs-a30e-0002 ~]# systemctl start docker
[root@ecs-a30e-0002 ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.- Verify whether the installation is successful (two parts, client and service, indicate that the installation and startup of docker are successful)
[root@ecs-a30e-0002 ~]# docker version
Client:
Version: 18.06.1-ce
API version: 1.38
Go version: go1.10.3
Git commit: e68fc7a
Built: Tue Aug 21 17:23:03 2018
OS/Arch: linux/amd64
Experimental: false
Server:
Engine:
Version: 18.06.1-ce
API version: 1.38 (minimum version 1.12)
Go version: go1.10.3
Git commit: e68fc7a
Built: Tue Aug 21 17:25:29 2018
OS/Arch: linux/amd64
Experimental: falseAll installation methods refer to Here , I record while installing