Docker 是一个开源的应用容器引擎,基于 Go 语言 并遵从 Apache2.0 协议开源。Docker 可以让开发者打包他们的应用以及依赖包到一个轻量级、可移植的容器中,然后发布到任何流行的 Linux 机器上,也可以实现虚拟化。容器是完全使用沙箱机制,相互之间不会有任何接口(类似 iPhone 的 app),更重要的是容器性能开销极低。
Docker 是一个开源的应用容器引擎,基于 Go 语言 并遵从 Apache2.0 协议开源。
Docker 可以让开发者打包他们的应用以及依赖包到一个轻量级、可移植的容器中,然后发布到任何流行的 Linux 机器上,也可以实现虚拟化。
容器是完全使用沙箱机制,相互之间不会有任何接口(类似 iPhone 的 app),更重要的是容器性能开销极低。
Linux服务器centos内核不能低于3.10
查看内核命令
uname -r
3.10.0-1062.18.1.el7.x86_64
安装过要清除
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror
adding repo from: http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
grabbing file http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
Docker分为(Docker版本分为CE(社区免费版)和EE(企业版,安全CE)
我们通常所下载的Docker为Docker ce社区版的
运行下面命令下载并安装Docker
sudo yum -y install docker-ce
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* centos-sclo-rh: mirrors.bfsu.edu.cn
* webtatic: us-east.repo.webtatic.com
docker-ce-stable | 3.5 kB 00:00:00
(1/2): docker-ce-stable/7/x86_64/updateinfo | 55 B 00:00:00
(2/2): docker-ce-stable/7/x86_64/primary_db | 82 kB 00:00:00
Resolving Dependencies
--> Running transaction check
---> Package docker-ce.x86_64 3:20.10.18-3.el7 will be installed
--> Processing Dependency: container-selinux >= 2:2.74 for package: 3:docker-ce-20.10.18-3.el7.x86_64
--> Processing Dependency: containerd.io >= 1.4.1 for package: 3:docker-ce-20.10.18-3.el7.x86_64
--> Processing Dependency: libseccomp >= 2.3 for package: 3:docker-ce-20.10.18-3.el7.x86_64
--> Processing Dependency: docker-ce-cli for package: 3:docker-ce-20.10.18-3.el7.x86_64
--> Processing Dependency: docker-ce-rootless-extras for package: 3:docker-ce-20.10.18-3.el7.x86_64
--> Running transaction check
---> Package container-selinux.noarch 2:2.119.2-1.911c772.el7_8 will be installed
---> Package containerd.io.x86_64 0:1.6.8-3.1.el7 will be installed
---> Package docker-ce-cli.x86_64 1:20.10.18-3.el7 will be installed
--> Processing Dependency: docker-scan-plugin(x86-64) for package: 1:docker-ce-cli-20.10.18-3.el7.x86_64
---> Package docker-ce-rootless-extras.x86_64 0:20.10.18-3.el7 will be installed
--> Processing Dependency: fuse-overlayfs >= 0.7 for package: docker-ce-rootless-extras-20.10.18-3.el7.x86_64
--> Processing Dependency: slirp4netns >= 0.4 for package: docker-ce-rootless-extras-20.10.18-3.el7.x86_64
---> Package libseccomp.x86_64 0:2.3.1-4.el7 will be installed
--> Running transaction check
---> Package docker-scan-plugin.x86_64 0:0.17.0-3.el7 will be installed
---> Package fuse-overlayfs.x86_64 0:0.7.2-6.el7_8 will be installed
--> Processing Dependency: libfuse3.so.3(FUSE_3.2)(64bit) for package: fuse-overlayfs-0.7.2-6.el7_8.x86_64
--> Processing Dependency: libfuse3.so.3(FUSE_3.0)(64bit) for package: fuse-overlayfs-0.7.2-6.el7_8.x86_64
--> Processing Dependency: libfuse3.so.3()(64bit) for package: fuse-overlayfs-0.7.2-6.el7_8.x86_64
---> Package slirp4netns.x86_64 0:0.4.3-4.el7_8 will be installed
--> Running transaction check
---> Package fuse3-libs.x86_64 0:3.6.1-4.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
===================================================================================================================================================
Package Arch Version Repository Size
===================================================================================================================================================
Installing:
docker-ce x86_64 3:20.10.18-3.el7 docker-ce-stable 22 M
Installing for dependencies:
container-selinux noarch 2:2.119.2-1.911c772.el7_8 extras 40 k
containerd.io x86_64 1.6.8-3.1.el7 docker-ce-stable 33 M
docker-ce-cli x86_64 1:20.10.18-3.el7 docker-ce-stable 30 M
docker-ce-rootless-extras x86_64 20.10.18-3.el7 docker-ce-stable 8.5 M
docker-scan-plugin x86_64 0.17.0-3.el7 docker-ce-stable 3.7 M
fuse-overlayfs x86_64 0.7.2-6.el7_8 extras 54 k
fuse3-libs x86_64 3.6.1-4.el7 extras 82 k
libseccomp x86_64 2.3.1-4.el7 base 56 k
slirp4netns x86_64 0.4.3-4.el7_8 extras 81 k
Transaction Summary
===================================================================================================================================================
Install 1 Package (+9 Dependent packages)
Total download size: 97 M
Installed size: 369 M
Downloading packages:
(1/10): container-selinux-2.119.2-1.911c772.el7_8.noarch.rpm | 40 kB 00:00:00
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-20.10.18-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
Public key for docker-ce-20.10.18-3.el7.x86_64.rpm is not installed
(2/10): docker-ce-20.10.18-3.el7.x86_64.rpm | 22 MB 00:00:02
(3/10): containerd.io-1.6.8-3.1.el7.x86_64.rpm | 33 MB 00:00:05
(4/10): docker-ce-rootless-extras-20.10.18-3.el7.x86_64.rpm | 8.5 MB 00:00:01
(5/10): fuse-overlayfs-0.7.2-6.el7_8.x86_64.rpm | 54 kB 00:00:00
(6/10): slirp4netns-0.4.3-4.el7_8.x86_64.rpm | 81 kB 00:00:00
(7/10): libseccomp-2.3.1-4.el7.x86_64.rpm | 56 kB 00:00:00
(8/10): fuse3-libs-3.6.1-4.el7.x86_64.rpm | 82 kB 00:00:00
(9/10): docker-scan-plugin-0.17.0-3.el7.x86_64.rpm | 3.7 MB 00:00:00
(10/10): docker-ce-cli-20.10.18-3.el7.x86_64.rpm | 30 MB 00:00:04
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 12 MB/s | 97 MB 00:00:07
Retrieving key from https://mirrors.aliyun.com/docker-ce/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://mirrors.aliyun.com/docker-ce/linux/centos/gpg
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : libseccomp-2.3.1-4.el7.x86_64 1/10
Installing : docker-scan-plugin-0.17.0-3.el7.x86_64 2/10
Installing : 1:docker-ce-cli-20.10.18-3.el7.x86_64 3/10
Installing : 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 4/10
setsebool: SELinux is disabled.
Installing : containerd.io-1.6.8-3.1.el7.x86_64 5/10
Installing : slirp4netns-0.4.3-4.el7_8.x86_64 6/10
Installing : fuse3-libs-3.6.1-4.el7.x86_64 7/10
Installing : fuse-overlayfs-0.7.2-6.el7_8.x86_64 8/10
Installing : 3:docker-ce-20.10.18-3.el7.x86_64 9/10
Installing : docker-ce-rootless-extras-20.10.18-3.el7.x86_64 10/10
Verifying : fuse3-libs-3.6.1-4.el7.x86_64 1/10
Verifying : containerd.io-1.6.8-3.1.el7.x86_64 2/10
Verifying : docker-ce-rootless-extras-20.10.18-3.el7.x86_64 3/10
Verifying : fuse-overlayfs-0.7.2-6.el7_8.x86_64 4/10
Verifying : 3:docker-ce-20.10.18-3.el7.x86_64 5/10
Verifying : slirp4netns-0.4.3-4.el7_8.x86_64 6/10
Verifying : 2:container-selinux-2.119.2-1.911c772.el7_8.noarch 7/10
Verifying : libseccomp-2.3.1-4.el7.x86_64 8/10
Verifying : 1:docker-ce-cli-20.10.18-3.el7.x86_64 9/10
Verifying : docker-scan-plugin-0.17.0-3.el7.x86_64 10/10
Installed:
docker-ce.x86_64 3:20.10.18-3.el7
Dependency Installed:
container-selinux.noarch 2:2.119.2-1.911c772.el7_8 containerd.io.x86_64 0:1.6.8-3.1.el7 docker-ce-cli.x86_64 1:20.10.18-3.el7 docker-ce-rootless-extras.x86_64 0:20.10.18-3.el7 docker-scan-plugin.x86_64 0:0.17.0-3.el7
fuse-overlayfs.x86_64 0:0.7.2-6.el7_8 fuse3-libs.x86_64 0:3.6.1-4.el7 libseccomp.x86_64 0:2.3.1-4.el7 slirp4netns.x86_64 0:0.4.3-4.el7_8
Complete!
docker version
Version: 20.10.18
API version: 1.41
Go version: go1.18.6
Git commit: b40c2f6
Built: Thu Sep 8 23:14:08 2022
OS/Arch: linux/amd64
Context: default
Experimental: true
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
转载注明:
感谢博主,喝杯咖啡~
感谢博主,喝杯咖啡~
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