1.2 docker安装

docker安装

官网：https://docs.docker.com/engine/install/centos/

操作系统要求：

要安装 Docker 引擎，您需要 CentOS 7 或 8 的维护版本。不支持或测试存档版本。该centos-extras库必须启用。默认情况下启用此存储库，但如果您已禁用它，则需要 重新启用它。

overlay2推荐使用存储驱动。

#安装所需的包

[root@bjcdn01 ~]# yum install -y yum-utils device-mapper-persistent-data lvm2

#安装官方yum源：

[root@bjcdn01 ~]# yum-config-manager \
> --add-repo \
> https://download.docker.com/linux/centos/docker-ce.repo

 

#安装docker最新版

[root@bjcdn01 ~]# yum install docker-ce docker-ce-cli containerd.io

#开启服务

[root@bjcdn01 ~]# systemctl start docker.service
[root@bjcdn01 ~]# systemctl enable docker.service

#查看版本

[root@bjcdn01 ~]# docker version
Client: Docker Engine - Community
Version: 20.10.7
API version: 1.41
Go version: go1.13.15
Git commit: f0df350
Built: Wed Jun 2 11:58:10 2021
OS/Arch: linux/amd64
Context: default
Experimental: true

Server: Docker Engine - Community
Engine:
Version: 20.10.7
API version: 1.41 (minimum version 1.12)
Go version: go1.13.15
Git commit: b0f5bc3
Built: Wed Jun 2 11:56:35 2021
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.4.6
GitCommit: d71fcd7d8303cbf684402823e425e9dd2e99285d
runc:
Version: 1.0.0-rc95
GitCommit: b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7
docker-init:
Version: 0.19.0
GitCommit: de40ad0

#查看详细信息

[root@bjcdn01 ~]# docker info
Client:
Context: default
Debug Mode: false
Plugins:
app: Docker App (Docker Inc., v0.9.1-beta3)
buildx: Build with BuildKit (Docker Inc., v0.5.1-docker)
scan: Docker Scan (Docker Inc., v0.8.0)

Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 20.10.7
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
Init Binary: docker-init
containerd version: d71fcd7d8303cbf684402823e425e9dd2e99285d
runc version: b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7
init version: de40ad0
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-1160.11.1.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 1.795GiB
Name: bjcdn01
ID: 55V7:4IFD:OSKV:OZDK:2DL5:AOXP:HPLQ:QAFW:4S5D:FVIF:Q2XZ:STMK
Docker Root Dir: /var/lib/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false

WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled

#运行hello-word

[root@bjcdn01 ~]# docker run hello-world

#查看

[root@bjcdn01 ~]# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest d1165f221234 4 months ago 13.3kB