A mounting step
Prerequisites
Docker running on CentOS7, the system requires 64-bit kernel version 3.10 or more.
Docker is a process, a start on two processes, a service, a daemon. Footprint is very small, start-up speed very
1, root account login to view the kernel version follows
[root@localhost ~]# uname -a Linux localhost.qgc 3.10.0-862.11.6.el7.x86_64 #1 SMP Tue Aug 14 21:49:04 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
2, uninstall the old version (if an old version installed)
$ sudo yum remove docker docker-common docker-selinux docker-engine
3, required installation package, yum-util provide yum-config-manager function, the other two are driven dependent devicemapper
$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
4, plus software source
[liu @ localhost ~] $ sudo yum -config-Manager --add-repo HTTP: // mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo sudo : yum -config-Manager: the Command not found ----- (represented depend on the environment is not installed)
5, you can view all versions of all warehouse docker, and select a particular version installed (optional)
$ yum list docker-ce --showduplicates | sort -r
6: Set up a remote repository
$sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
执行结果： Loaded plugins: fastestmirror, langpacks 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
7, update the cache
- yum makecache fast
8, installation docker
$ sudo yum install docker-ce
执行结果： Loaded plugins: fastestmirror, langpacks docker-ce-stable | 2.9 kB 00:00:00 docker-ce-stable/x86_64/primary_db | 4.8 kB 00:00:00 Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package docker-ce.x86_64 0:17.03.1.ce-1.el7.centos will be installed --> Processing Dependency: docker-ce-selinux >= 17.03.1.ce-1.el7.centos for package: docker-ce-17.03.1.ce-1.el7.centos.x86_64 --> Processing Dependency: libcgroup for package: docker-ce-17.03.1.ce-1.el7.centos.x86_64 --> Processing Dependency: libseccomp.so.2()(64bit) for package: docker-ce-17.03.1.ce-1.el7.centos.x86_64 --> Running transaction check ---> Package docker-ce-selinux.noarch 0:17.03.1.ce-1.el7.centos will be installed --> Processing Dependency: policycoreutils-python for package: docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch ---> Package libcgroup.x86_64 0:0.41-11.el7 will be installed ---> Package libseccomp.x86_64 0:2.3.1-2.el7 will be installed --> Running transaction check ---> Package policycoreutils-python.x86_64 0:2.5-11.el7_3 will be installed --> Processing Dependency: setools-libs >= 3.3.8-1 for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: libsemanage-python >= 2.5-5 for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: audit-libs-python >= 2.1.3-4 for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: python-IPy for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: libqpol.so.1(VERS_1.4)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: libqpol.so.1(VERS_1.2)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: libapol.so.4(VERS_4.0)(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: checkpolicy for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: libqpol.so.1()(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Processing Dependency: libapol.so.4()(64bit) for package: policycoreutils-python-2.5-11.el7_3.x86_64 --> Running transaction check ---> Package audit-libs-python.x86_64 0:2.6.5-3.el7_3.1 will be installed ---> Package checkpolicy.x86_64 0:2.5-4.el7 will be installed ---> Package libsemanage-python.x86_64 0:2.5-5.1.el7_3 will be installed ---> Package python-IPy.noarch 0:0.75-6.el7 will be installed ---> Package setools-libs.x86_64 0:3.3.8-1.1.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ===================================================================================================================== Package Arch Version Repository Size ===================================================================================================================== Installing: docker-ce x86_64 17.03.1.ce-1.el7.centos docker-ce-stable 19 M Installing for dependencies: audit-libs-python x86_64 2.6.5-3.el7_3.1 update 70 k checkpolicy x86_64 2.5-4.el7 base 290 k docker-ce-selinux noarch 17.03.1.ce-1.el7.centos docker-ce-stable 28 k libcgroup x86_64 0.41-11.el7 base 65 k libseccomp x86_64 2.3.1-2.el7 base 56 k libsemanage-python x86_64 2.5-5.1.el7_3 update 104 k policycoreutils-python x86_64 2.5-11.el7_3 update 445 k python-IPy noarch 0.75-6.el7 base 32 k setools-libs x86_64 3.3.8-1.1.el7 base 612 k Transaction Summary ===================================================================================================================== Install 1 Package (+9 Dependent packages) Total download size: 20 M Installed size: 24 M Is this ok [y/d/N]: y Downloading packages: (1/10): audit-libs-python-2.6.5-3.el7_3.1.x86_64.rpm | 70 kB 00:00:00 (2/10): checkpolicy-2.5-4.el7.x86_64.rpm | 290 kB 00:00:00 (3/10): libseccomp-2.3.1-2.el7.x86_64.rpm | 56 kB 00:00:00 (4/10): libcgroup-0.41-11.el7.x86_64.rpm | 65 kB 00:00:00 (5/10): policycoreutils-python-2.5-11.el7_3.x86_64.rpm | 445 kB 00:00:00 (6/10): setools-libs-3.3.8-1.1.el7.x86_64.rpm | 612 kB 00:00:00 (7/10): libsemanage-python-2.5-5.1.el7_3.x86_64.rpm | 104 kB 00:00:00 (8/10): python-IPy-0.75-6.el7.noarch.rpm | 32 kB 00:00:00 warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY Public key for docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch.rpm is not installed (9 /10): Docker it-selinux- 17.03 . 1 .ce- 1 .el7.centos.noarch.rpm | 28 kB 00 : 00 : 00 ( 10 / 10 ): docker-this- 17.03 . 1 .ce- 1 .el7.centos.x86_64.rpm | 19 MB 00 : 00 : 00 ------------------------------------------- -------------------------------------------------- ------------------------ Total 23 MB/s | 20 MB 00:00:00 Retrieving key from https://download.docker.com/linux/centos/gpg Importing GPG key 0x621E9F35: Userid : "Docker Release (CE rpm) <[email protected]>" 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 : libcgroup-0.41-11.el7.x86_64 1/10 Installing : setools-libs-3.3.8-1.1.el7.x86_64 2/10 Installing : checkpolicy-2.5-4.el7.x86_64 3/10 Installing : libsemanage-python-2.5-5.1.el7_3.x86_64 4/10 Installing : audit-libs-python-2.6.5-3.el7_3.1.x86_64 5/10 Installing : python-IPy-0.75-6.el7.noarch 6/10 Installing : policycoreutils-python-2.5-11.el7_3.x86_64 7/10 Installing : docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch 8/10 setsebool: SELinux is disabled. libsemanage.semanage_direct_install_info: Overriding docker module at lower priority 100 with module at priority 400. Installing : libseccomp-2.3.1-2.el7.x86_64 9/10 Installing : docker-ce-17.03.1.ce-1.el7.centos.x86_64 10/10 Verifying : libseccomp-2.3.1-2.el7.x86_64 1/10 Verifying : python-IPy-0.75-6.el7.noarch 2/10 Verifying : audit-libs-python-2.6.5-3.el7_3.1.x86_64 3/10 Verifying : libsemanage-python-2.5-5.1.el7_3.x86_64 4/10 Verifying : docker-ce-selinux-17.03.1.ce-1.el7.centos.noarch 5/10 Verifying : libcgroup-0.41-11.el7.x86_64 6/10 Verifying : policycoreutils-python-2.5-11.el7_3.x86_64 7/10 Verifying : docker-ce-17.03.1.ce-1.el7.centos.x86_64 8/10 Verifying : checkpolicy-2.5-4.el7.x86_64 9/10 Verifying : setools-libs-3.3.8-1.1.el7.x86_64 10/10 Installed: docker-ce.x86_64 0:17.03.1.ce-1.el7.centos Dependency Installed: audit-libs-python.x86_64 0:2.6.5-3.el7_3.1 checkpolicy.x86_64 0:2.5-4.el7 docker-ce-selinux.noarch 0:17.03.1.ce- 1 .el7.centos Libcgroup.x86_64 0 : 0.41 - 11 .el7 Libseccomp.x86_64 0 : 2.3 . 1 - 2 .el7 Libsemanage-Python.x86_64 0 : 2.5 - 5.1 .el7_3 Policycoreutils -python.x86_64 0 : 2.5 - 11 .el7_3 PYTHON-IPy.noarch 0 : 0.75 - 6 .el7 Setools -libs.x86_64 0 : 3.3 .8-1.1.el7 Complete!
Nine, start docker and add startup
Sudo systemctl Start Docker $ $ sudo systemctl enable Docker
or (recommended above)
$ sudo Service Docker Start
Service Start # Start Docker Docker
chkconfig boot join Docker ON #
Ten, verify that the installation was successful (there are two parts, client service and installation start indicate docker had been successful)
docker version
XI Test Container
sudo docker run hello-world
sudo docker info # View information
Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world 78445dd45222: Pull complete Digest: sha256:c5515758d4c5e1e838e9cd307f6c6a0d620b5e07e6f927b07d05f6d12a1ac8d7 Status: Downloaded newer image for hello-world:latest Hello from Docker! This message shows that your installation appears to be working correctly. To generate this message, Docker took the following steps: 1. The Docker client contacted the Docker daemon. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub. 3. The Docker daemon created a new container from that image which runs the executable that produces the output you are currently reading. 4. The Docker daemon streamed that output to the Docker client, which sent it to your terminal. To try something more ambitious, you can run an Ubuntu container with: $ docker run -it ubuntu bash Share images, automate workflows, and more with a free Docker ID: https://cloud.docker.com/ For more examples and ideas, visit: https://docs.docker.com/engine/userguide/
Second, the problem
1, since before the old version of the docker is already installed, when installed being given as follows:
Transaction check error: file /usr/bin/docker from install of docker-ce-17.12.0.ce-1.el7.centos.x86_64 conflicts with file from package docker-common-2:1.12.6-68.gitec8512b.el7.centos.x86_64 file /usr/bin/docker-containerd from install of docker-ce-17.12.0.ce-1.el7.centos.x86_64 conflicts with file from package docker-common-2:1.12.6-68.gitec8512b.el7.centos.x86_64 file /usr/bin/docker-containerd-shim from install of docker-ce-17.12.0.ce-1.el7.centos.x86_64 conflicts with file from package docker-common-2:1.12.6-68.gitec8512b.el7.centos.x86_64 file /usr/bin/dockerd from install of docker-ce-17.12.0.ce-1.el7.centos.x86_64 conflicts with file from package docker-common-2:1.12.6-68.gitec8512b.el7.centos.x86_64
2, uninstall the old version of the package
$ sudo yum erase docker-common-2:1.12.6-68.gitec8512b.el7.centos.x86_64
3, re-install docker
$ sudo yum install docker-ce