1.查看内核
[root@CentOS7 ~]# uname -r
3.10.0-957.21.3.el7.x86_64
[root@CentOS7 ~]#
2. 安装docker
[root@CentOS7 ~]# curl -sSL https://get.docker.com/ | sh
# Executing docker install script, commit: 6bf300318ebaab958c4adc341a8c7bb9f3a54a1a
+ sh -c 'yum install -y -q yum-utils'
软件包 yum-utils-1.1.31-50.el7.noarch 已安装并且是最新版本
+ sh -c 'yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo'
已加载插件：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
+ '[' stable '!=' stable ']'
+ sh -c 'yum makecache'
已加载插件：fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirror.jdcloud.com
* extras: mirror.bit.edu.cn
* updates: mirror.bit.edu.cn
ambari-2.7.3.0 | 2.9 kB 00:00:00
base | 3.6 kB 00:00:00
docker-ce-stable | 3.5 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/13): base/7/x86_64/other_db | 2.6 MB 00:00:00
(2/13): docker-ce-stable/x86_64/filelists_db | 15 kB 00:00:00
(3/13): ambari-2.7.3.0/other_db | 1.4 kB 00:00:00
(4/13): docker-ce-stable/x86_64/primary_db | 30 kB 00:00:00
(5/13): extras/7/x86_64/filelists_db | 246 kB 00:00:00
(6/13): docker-ce-stable/x86_64/other_db | 112 kB 00:00:00
(7/13): extras/7/x86_64/prestodelta | 65 kB 00:00:00
(8/13): docker-ce-stable/x86_64/updateinfo | 55 B 00:00:00
(9/13): extras/7/x86_64/other_db | 127 kB 00:00:00
(10/13): updates/7/x86_64/other_db | 659 kB 00:00:00
(11/13): ambari-2.7.3.0/filelists_db | 103 kB 00:00:01
(12/13): updates/7/x86_64/filelists_db | 4.6 MB 00:00:00
(13/13): base/7/x86_64/filelists_db | 7.1 MB 00:00:02
元数据缓存已建立
+ '[' -n '' ']'
+ sh -c 'yum install -y -q docker-ce'
warning: /var/cache/yum/x86_64/7/docker-ce-stable/packages/docker-ce-18.09.8-3.el7.x86_64.rpm: Header V4 RSA/SHA512 Signature, key ID 621e9f35: NOKEY
docker-ce-18.09.8-3.el7.x86_64.rpm 的公钥尚未安装
导入 GPG key 0x621E9F35:
用户ID : "Docker Release (CE rpm)
指纹 : 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35
来自 : https://download.docker.com/linux/centos/gpg
If you would like to use Docker as a non-root user, you should now consider
adding your user to the "docker" group with something like:
sudo usermod -aG docker your-user
Remember that you will have to log out and back in for this to take effect!
WARNING: Adding a user to the "docker" group will grant the ability to run
containers which can be used to obtain root privileges on the
docker host.
Refer to https://docs.docker.com/engine/security/security/#docker-daemon-attack-surface
for more information.
3.启动docker
[root@CentOS7 ~]# service docker start
Redirecting to /bin/systemctl start docker.service
4.测试docker
[root@CentOS7 ~]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:6540fc08ee6e6b7b63468dc3317e3303aae178cb8a45ed3123180328bcc1d20f
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/
[root@CentOS7 ~]# docker info
Containers: 1
Running: 0
Paused: 0
Stopped: 1
Images: 1
Server Version: 18.09.8
Storage Driver: overlay2
Backing Filesystem: xfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 894b81a4b802e4eb2a91d1ce216b8817763c29fb
runc version: 425e105d5a03fabd737a126ad93d62a9eeede87f
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-957.21.3.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 2.386GiB
Name: CentOS7
ID: V6H5:7DSN:DFAP:YGCG:K2KC:K5RI:TFD4:TSKZ:LT3C:WWLQ:73WA:2Y4F
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine
[root@CentOS7 ~]#
5.设置开机启动
[root@CentOS7 ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@CentOS7 ~]#