docker教程02（docker的安装）
1卸载旧版本的docker
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
如果你没有安装过docker，执行后结果如下
[root@docerk01 opt]# sudo yum remove docker \
> docker-client \
> docker-client-latest \
> docker-common \
> docker-latest \
> docker-latest-logrotate \
> docker-logrotate \
> docker-engine
Loaded plugins: fastestmirror
No Match for argument: docker
No Match for argument: docker-client
No Match for argument: docker-client-latest
No Match for argument: docker-common
No Match for argument: docker-latest
No Match for argument: docker-latest-logrotate
No Match for argument: docker-logrotate
No Match for argument: docker-engine
No Packages marked for removal
2设置yum仓库
执行命令
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
运行截图：
[root@docker01 opt]# sudo yum install -y yum-utils
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: mirrors.cloud.aliyuncs.com
* extras: mirrors.cloud.aliyuncs.com
* updates: mirrors.cloud.aliyuncs.com
base | 3.6 kB 00:00
extras | 2.9 kB 00:00
updates | 2.9 kB 00:00
(1/2): extras/7/x86_64/primary_db | 205 kB 00:00
(2/2): updates/7/x86_64/primary_db | 3.0 MB 00:01
Resolving Dependencies
--> Running transaction check
---> Package yum-utils.noarch 0:1.1.31-54.el7_8 will be installed
--> Processing Dependency: python-kitchen for package: yum-utils-1.1.31-54.el7_8.noarch
--> Processing Dependency: libxml2-python for package: yum-utils-1.1.31-54.el7_8.noarch
--> Running transaction check
---> Package libxml2-python.x86_64 0:2.9.1-6.el7.4 will be installed
--> Processing Dependency: libxml2 = 2.9.1-6.el7.4 for package: libxml2-python-2.9.1-6.el7.4.x86_64
---> Package python-kitchen.noarch 0:1.1.1-5.el7 will be installed
--> Processing Dependency: python-chardet for package: python-kitchen-1.1.1-5.el7.noarch
--> Running transaction check
---> Package libxml2.x86_64 0:2.9.1-6.el7_2.3 will be updated
---> Package libxml2.x86_64 0:2.9.1-6.el7.4 will be an update
---> Package python-chardet.noarch 0:2.2.1-3.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
yum-utils noarch 1.1.31-54.el7_8 updates 122 k
Installing for dependencies:
libxml2-python x86_64 2.9.1-6.el7.4 base 247 k
python-chardet noarch 2.2.1-3.el7 base 227 k
python-kitchen noarch 1.1.1-5.el7 base 267 k
Updating for dependencies:
libxml2 x86_64 2.9.1-6.el7.4 base 668 k
Transaction Summary
================================================================================
Install 1 Package (+3 Dependent packages)
Upgrade ( 1 Dependent package)
Total download size: 1.5 M
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
(1/5): libxml2-python-2.9.1-6.el7.4.x86_64.rpm | 247 kB 00:00
(2/5): libxml2-2.9.1-6.el7.4.x86_64.rpm | 668 kB 00:00
(3/5): python-chardet-2.2.1-3.el7.noarch.rpm | 227 kB 00:00
(4/5): yum-utils-1.1.31-54.el7_8.noarch.rpm | 122 kB 00:00
(5/5): python-kitchen-1.1.1-5.el7.noarch.rpm | 267 kB 00:00
--------------------------------------------------------------------------------
Total 2.6 MB/s | 1.5 MB 00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Updating : libxml2-2.9.1-6.el7.4.x86_64 1/6
Installing : libxml2-python-2.9.1-6.el7.4.x86_64 2/6
Installing : python-chardet-2.2.1-3.el7.noarch 3/6
Installing : python-kitchen-1.1.1-5.el7.noarch 4/6
Installing : yum-utils-1.1.31-54.el7_8.noarch 5/6
Cleanup : libxml2-2.9.1-6.el7_2.3.x86_64 6/6
Verifying : python-chardet-2.2.1-3.el7.noarch 1/6
Verifying : python-kitchen-1.1.1-5.el7.noarch 2/6
Verifying : libxml2-python-2.9.1-6.el7.4.x86_64 3/6
Verifying : libxml2-2.9.1-6.el7.4.x86_64 4/6
Verifying : yum-utils-1.1.31-54.el7_8.noarch 5/6
Verifying : libxml2-2.9.1-6.el7_2.3.x86_64 6/6
Installed:
yum-utils.noarch 0:1.1.31-54.el7_8
Dependency Installed:
libxml2-python.x86_64 0:2.9.1-6.el7.4 python-chardet.noarch 0:2.2.1-3.el7
python-kitchen.noarch 0:1.1.1-5.el7
Dependency Updated:
libxml2.x86_64 0:2.9.1-6.el7.4
Complete!
[root@docker opt]# sudo 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
3安装docker引擎
运行命令：
sudo yum install docker-ce docker-ce-cli containerd.io
运行截图
[root@docer opt]# sudo yum install docker-ce docker-ce-cli containerd.io
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.cloud.aliyuncs.com
* extras: mirrors.cloud.aliyuncs.com
* updates: mirrors.cloud.aliyuncs.com
docker-ce-stable | 3.5 kB 00:00
(1/2): docker-ce-stable/x86_64/updateinfo | 55 B 00:00
(2/2): docker-ce-stable/x86_64/primary_db | 45 kB 00:00
Resolving Dependencies
--> Running transaction check
---> Package containerd.io.x86_64 0:1.2.13-3.2.el7 will be installed
--> Processing Dependency: container-selinux >= 2:2.74 for package: containerd.io-1.2.13-3.2.el7.x86_64
---> Package docker-ce.x86_64 3:19.03.12-3.el7 will be installed
--> Processing Dependency: libcgroup for package: 3:docker-ce-19.03.12-3.el7.x86_64
---> Package docker-ce-cli.x86_64 1:19.03.12-3.el7 will be installed
--> Running transaction check
---> Package container-selinux.noarch 2:2.119.2-1.911c772.el7_8 will be installed
--> Processing Dependency: policycoreutils-python for package: 2:container-selinux-2.119.2-1.911c772.el7_8.noarch
---> Package libcgroup.x86_64 0:0.41-21.el7 will be installed
--> Running transaction check
---> Package policycoreutils-python.x86_64 0:2.5-34.el7 will be installed
--> Processing Dependency: policycoreutils = 2.5-34.el7 for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: setools-libs >= 3.3.8-4 for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: libsemanage-python >= 2.5-14 for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: audit-libs-python >= 2.1.3-4 for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: python-IPy for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: libqpol.so.1(VERS_1.4)(64bit) for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: libqpol.so.1(VERS_1.2)(64bit) for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: libapol.so.4(VERS_4.0)(64bit) for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: checkpolicy for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: libqpol.so.1()(64bit) for package: policycoreutils-python-2.5-34.el7.x86_64
--> Processing Dependency: libapol.so.4()(64bit) for package: policycoreutils-python-2.5-34.el7.x86_64
--> Running transaction check
---> Package audit-libs-python.x86_64 0:2.8.5-4.el7 will be installed
---> Package checkpolicy.x86_64 0:2.5-8.el7 will be installed
---> Package libsemanage-python.x86_64 0:2.5-14.el7 will be installed
---> Package policycoreutils.x86_64 0:2.5-33.el7 will be updated
---> Package policycoreutils.x86_64 0:2.5-34.el7 will be an update
---> Package python-IPy.noarch 0:0.75-6.el7 will be installed
---> Package setools-libs.x86_64 0:3.3.8-4.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
containerd.io x86_64 1.2.13-3.2.el7 docker-ce-stable 25 M
docker-ce x86_64 3:19.03.12-3.el7 docker-ce-stable 24 M
docker-ce-cli x86_64 1:19.03.12-3.el7 docker-ce-stable 38 M
Installing for dependencies:
audit-libs-python x86_64 2.8.5-4.el7 base 76 k
checkpolicy x86_64 2.5-8.el7 base 295 k
container-selinux noarch 2:2.119.2-1.911c772.el7_8 extras 40 k
libcgroup x86_64 0.41-21.el7 base 66 k
libsemanage-python x86_64 2.5-14.el7 base 113 k
policycoreutils-python x86_64 2.5-34.el7 base 457 k
python-IPy noarch 0.75-6.el7 base 32 k
setools-libs x86_64 3.3.8-4.el7 base 620 k
Updating for dependencies:
policycoreutils x86_64 2.5-34.el7 base 917 k
Transaction Summary
================================================================================
Install 3 Packages (+8 Dependent packages)
Upgrade ( 1 Dependent package)
Total download size: 90 M
Is this ok [y/d/N]: y
Downloading packages:
Delta RPMs disabled because /usr/bin/applydeltarpm not installed.
(1/12): container-selinux-2.119.2-1.911c772.el7_8.noarch.r | 40 kB 00:00
(2/12): audit-libs-python-2.8.5-4.el7.x86_64.rpm | 76 kB 00:00
(3/12): checkpolicy-2.5-8.el7.x86_64.rpm | 295 kB 00:00
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-19.03.12-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
Public key for docker-ce-19.03.12-3.el7.x86_64.rpm is not installed
(4/12): docker-ce-19.03.12-3.el7.x86_64.rpm | 24 MB 00:08
(5/12): libcgroup-0.41-21.el7.x86_64.rpm | 66 kB 00:00
(6/12): libsemanage-python-2.5-14.el7.x86_64.rpm | 113 kB 00:00
(7/12): policycoreutils-python-2.5-34.el7.x86_64.rpm | 457 kB 00:00
(8/12): python-IPy-0.75-6.el7.noarch.rpm | 32 kB 00:00
(9/12): setools-libs-3.3.8-4.el7.x86_64.rpm | 620 kB 00:00
(10/12): containerd.io-1.2.13-3.2.el7.x86_64.rpm | 25 MB 00:09
(11/12): policycoreutils-2.5-34.el7.x86_64.rpm | 917 kB 00:01
(12/12): docker-ce-cli-19.03.12-3.el7.x86_64.rpm | 38 MB 00:07
--------------------------------------------------------------------------------
Total 5.5 MB/s | 90 MB 00:16
Retrieving key from https://download.docker.com/linux/centos/gpg
Importing GPG key 0x621E9F35:
Userid : "Docker Release (CE rpm) "
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-0.41-21.el7.x86_64 1/13
Updating : policycoreutils-2.5-34.el7.x86_64 2/13
Installing : setools-libs-3.3.8-4.el7.x86_64 3/13
Installing : 1:docker-ce-cli-19.03.12-3.el7.x86_64 4/13
Installing : python-IPy-0.75-6.el7.noarch 5/13
Installing : libsemanage-python-2.5-14.el7.x86_64 6/13
Installing : audit-libs-python-2.8.5-4.el7.x86_64 7/13
Installing : checkpolicy-2.5-8.el7.x86_64 8/13
Installing : policycoreutils-python-2.5-34.el7.x86_64 9/13
Installing : 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 10/13
setsebool: SELinux is disabled.
Installing : containerd.io-1.2.13-3.2.el7.x86_64 11/13
Installing : 3:docker-ce-19.03.12-3.el7.x86_64 12/13
Cleanup : policycoreutils-2.5-33.el7.x86_64 13/13
Verifying : checkpolicy-2.5-8.el7.x86_64 1/13
Verifying : audit-libs-python-2.8.5-4.el7.x86_64 2/13
Verifying : policycoreutils-2.5-34.el7.x86_64 3/13
Verifying : libsemanage-python-2.5-14.el7.x86_64 4/13
Verifying : containerd.io-1.2.13-3.2.el7.x86_64 5/13
Verifying : 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 6/13
Verifying : python-IPy-0.75-6.el7.noarch 7/13
Verifying : policycoreutils-python-2.5-34.el7.x86_64 8/13
Verifying : 1:docker-ce-cli-19.03.12-3.el7.x86_64 9/13
Verifying : 3:docker-ce-19.03.12-3.el7.x86_64 10/13
Verifying : setools-libs-3.3.8-4.el7.x86_64 11/13
Verifying : libcgroup-0.41-21.el7.x86_64 12/13
Verifying : policycoreutils-2.5-33.el7.x86_64 13/13
Installed:
containerd.io.x86_64 0:1.2.13-3.2.el7 docker-ce.x86_64 3:19.03.12-3.el7
docker-ce-cli.x86_64 1:19.03.12-3.el7
Dependency Installed:
audit-libs-python.x86_64 0:2.8.5-4.el7
checkpolicy.x86_64 0:2.5-8.el7
container-selinux.noarch 2:2.119.2-1.911c772.el7_8
libcgroup.x86_64 0:0.41-21.el7
libsemanage-python.x86_64 0:2.5-14.el7
policycoreutils-python.x86_64 0:2.5-34.el7
python-IPy.noarch 0:0.75-6.el7
setools-libs.x86_64 0:3.3.8-4.el7
Dependency Updated:
policycoreutils.x86_64 0:2.5-34.el7
Complete!
[root@dg002 opt]# sudo systemctl start docker^C
[root@dg002 opt]# sudo yum install docker-ce docker-ce-cli containerd.io
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.cloud.aliyuncs.com
* extras: mirrors.cloud.aliyuncs.com
* updates: mirrors.cloud.aliyuncs.com
Package 3:docker-ce-19.03.12-3.el7.x86_64 already installed and latest version
Package 1:docker-ce-cli-19.03.12-3.el7.x86_64 already installed and latest version
Package containerd.io-1.2.13-3.2.el7.x86_64 already installed and latest version
Nothing to do
4 修改镜像源
vi /etc/docker/daemon.json
{"registry-mirrors": ["http://hub-mirror.c.163.com"]}
4启动docker
sudo systemctl start docker
运行docker的hello world
[root@docker root]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete
Digest: sha256:49a1c8800c94df04e9658809b006fd8a686cab8028d33cfba2cc049724254202
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.
(amd64)
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://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/