1.查看內(nèi)核

[root@CentOS7 ~]# uname -r

3.10.0-957.21.3.el7.x86_64

[root@CentOS7 ~]#

2. 安裝docker

[root@CentOS7 ~]# curl -sSL https://get.docker.com/ | sh

# Executing docker install script, commit: 6bf300318ebaab958c4adc341a8c7bb9f3a54a1a

+ sh -c 'yum install -y -q yum-utils'

軟件包 yum-utils-1.1.31-50.el7.noarch 已安裝并且是最新版本

+ sh -c 'yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo'

已加載插件：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'

已加載插件：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? ?

元數(shù)據(jù)緩存已建立

+ '[' -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 的公鑰尚未安裝

導(dǎo)入 GPG key 0x621E9F35:

用戶ID? ? : "Docker Release (CE rpm) <docker@docker.com>"

指紋? ? ? : 060a 61c5 1b55 8a7f 742b 77aa c52f eb6b 621e 9f35

來自? ? ? : 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.啟動docker

[root@CentOS7 ~]# service docker start

Redirecting to /bin/systemctl start docker.service

4.測試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.設(shè)置開機啟動

[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 ~]#