Docker安装

Docker是基于Go语言实现的容器引擎。

解决运行环境和开发环境不同造成的问题。

官方网址:https://www.docker.com

Docker分为DockerCE社区版和DockerEE企业版。

Docker 由镜像、容器、远程镜像仓库。

容器化技术和虚拟化技术差别：

Docker 安装：

官方文档： https://docs.docker.com/install/linux/docker-ce/centos/

基于CentOS 7  (3.10.0-1062.el7.x86_64)

#yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2
#yum-config-manager \
    --add-repo \
    https://download.docker.com/linux/centos/docker-ce.repo
#yum install docker-ce docker-ce-cli containerd.io

# 启动docker
# systemctl start docker

# 关闭docker
# systemctl stop docker

查看docker信息

# docker version
Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea
 Built:             Wed Nov 13 07:25:41 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea
  Built:            Wed Nov 13 07:24:18 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

# docker info
Client:
 Debug Mode: false

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 0
 Server Version: 19.03.5
 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 ipvlan 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: b34a5c8af56e510852c35414db4c1f4fa6172339
 runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
 init version: fec3683
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 3.10.0-1062.el7.x86_64
 Operating System: CentOS Linux 7 (Core)
 OSType: linux
 Architecture: x86_64
 CPUs: 4
 Total Memory: 3.682GiB
 Name: localhost.localdomain
 ID: LRYC:CF3G:SENH:SRST:23MD:CRAA:LQMI:SBKB:R6OR:O4J3:XL6F:B7AN
 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

# 设置docker开机启动
# systemctl enable docker

卸载Docker：

# yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

Docker rpm 安装包下载地址： https://download.docker.com/linux/centos/7/x86_64/stable/Packages/