概述
yum安装docker
1. 基础环境配置
1.1删除已安装docker:
yum remove docker
docker-client
docker-client-latest
docker-common
docker-latest
docker-latest-logrotate
docker-logrotate
docker-engine
1.2 安装必要的工具和依赖
yum install -y yum-utils device-mapper-persistent-data lvm2
1.3 下载docker源repo
wget -O /etc/yum.repos.d/docker-ce.repo https://download.docker.com/linux/centos/docker-ce.repo
1.4 替换docker安装源为国内清华大学源
sed -i 's+download.docker.com+mirrors.tuna.tsinghua.edu.cn/docker-ce+' /etc/yum.repos.d/docker-ce.repo
1.5 刷新yum缓存
yum makecache
2. yum安装docker
2.1 使用yum安装docek-ce及客户端
yum -y install docker-ce docker-ce-cli containerd.io
2.2 查看安装内容
yum list docker-ce --showduplicates | sort -r
[root@C8-189 ~]# yum list docker-ce --showduplicates | sort -r
Last metadata expiration check: 0:10:35 ago on Fri 09 Jul 2021 09:08:31 PM CST.
Installed Packages
docker-ce.x86_64 3:20.10.7-3.el8 docker-ce-stable
docker-ce.x86_64 3:20.10.7-3.el8 @docker-ce-stable
docker-ce.x86_64 3:20.10.6-3.el8 docker-ce-stable
docker-ce.x86_64 3:20.10.5-3.el8 docker-ce-stable
docker-ce.x86_64 3:20.10.4-3.el8 docker-ce-stable
docker-ce.x86_64 3:20.10.3-3.el8 docker-ce-stable
docker-ce.x86_64 3:20.10.2-3.el8 docker-ce-stable
docker-ce.x86_64 3:20.10.1-3.el8 docker-ce-stable
docker-ce.x86_64 3:20.10.0-3.el8 docker-ce-stable
docker-ce.x86_64 3:19.03.15-3.el8 docker-ce-stable
docker-ce.x86_64 3:19.03.14-3.el8 docker-ce-stable
docker-ce.x86_64 3:19.03.13-3.el8 docker-ce-stable
Available Packages
2.3 启动docekr服务并设为开机运行
systemctl enable --now docker
3. 测试docker
3.1 查看docker版本信息
docker version
[root@C8-189 ~]# 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 11:56:24 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 11:54:48 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
3.2 跑一个docker镜像实例
docker run hello-world
docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
b8dfde127a29: Pull complete
Digest: sha256:2d6c8d5d693cd84097c6949fc0e9d4e72503555b64aed72f84bdd0dbea3d5ccb
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/
3.3 验证docker网络
- docker安装好以后会自动生成一个虚拟桥接网卡docker0
[root@C8-189 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:0c:29:af:1a:22 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.189/24 brd 10.0.0.255 scope global noprefixroute eth0
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:feaf:1a22/64 scope link
valid_lft forever preferred_lft forever
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:92:c1:3d:0f brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:92ff:fec1:3d0f/64 scope link
valid_lft forever preferred_lft forever
3.4 验证docker信息
docker info
[root@C8-189 ~]# 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: 1
Running: 0
Paused: 0
Stopped: 1
Images: 1
Server Version: 20.10.7
Storage Driver: overlay2
Backing Filesystem: xfs
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: 4.18.0-147.el8.x86_64
Operating System: CentOS Linux 8 (Core)
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.764GiB
Name: C8-189
ID: I5LZ:2HOG:FT4T:OMIE:2SDL:VNC3:Y3GM:J4XD:ZP43:ARHJ:EGUD:T5VB
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
最后
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