Docker容器安装

Docker 安装和使用

一、在Ubuntu上安装docker，这里使用的版本是：Ubuntu18.04
安装apt-transport-https等软件包支持HTTPS协议源：

cobbler@cobbler-docker:~$ sudo apt-get install \
apt-transport-https \
ca-certificates \
curl \
software-properties-common

添加源的gpg密钥：

cobbler@cobbler-docker:~$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
OK

确认导入密钥：

cobbler@cobbler-docker:~$ sudo apt-key fingerprints 0EBFCD88
    pub   rsa4096 2017-02-22 [SCEA]
           9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
    uid           [ unknown] Docker Release (CE deb) <docker@docker.com>
    sub   rsa4096 2017-02-22 [S]

获取当前操做系统的代号：
通常状况下，Ubuntu 16.04 LTS代号为xenial, Ubuntu 18.04 LTS代号为bionic

cobbler@cobbler-docker:~$ lsb_release -cs
    bionic

添加官方稳定版软件源：

cobbler@cobbler-docker:~$ sudo add-apt-repository \
         "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
         bionic \
         stable"

添加后须要更新apt软件包缓存：

cobbler@cobbler-docker:~$ sudo apt-get update

开始安装docker，安装成功以后、会自动启动docker服务

cobbler@cobbler-docker:~$ sudo apt-get install -y docker-ce

二、在centos安装docker、这里使用的版本为centos 7.5，须要提早配置好epel源、获取docker的repo文件和安装docker

[root@node7 ~]# wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/
[root@node7 ~]# yum -y install docker-ce

使用阿里云加速器、阿里云的镜像地址为 http://dev.aliyun.com 须要注册，使用本身的加速地址便可

[root@kvm-server ~]# mkdir -p /etc/docker
    [root@kvm-server docker]# vim daemon.json
    {
  "registry-mirrors": ["https://xxxxxx.mirror.aliyuncs.com"]
    }

在启动以前须要改下docker的启动服务加一项iptables规则要否则启动以后forwar链上默认被改为DROP

[root@kvm-server docker]# vim /usr/lib/systemd/system/docker.service 
ExecStartPost=/usr/sbin/iptables -P FORWARD ACCEPT

重载文件、并启动docker服务

[root@kvm-server docker]# systemctl daemon-reload
    [root@kvm-server docker]# systemctl restart docker

查看docker的信息

[root@node7 ~]#docker info 
Containers: 6
 Running: 6
 Paused: 0
 Stopped: 0
Images: 5
Server Version: 18.06.1-ce
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 logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 468a545b9edcd5932818eb9de8e72413e616e86e
runc version: 69663f0bd4b60df09991c08812a60108003fa340
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 3.10.0-862.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 2
Total Memory: 1.779GiB
Name: node7.dklwj.com
ID: OST6:BVR7:UBAN:ACCI:YKPX:RLEM:DXKQ:QQPI:LYSY:PIVO:EUUA:4PQR
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
Registry Mirrors:
 https://xxxxxxxxx.mirror.aliyuncs.com/
Live Restore Enabled: false