docker及私有仓库harbor安装实践

docker非常重要，今天我们来实现对它的搭建

docker安装部署

这里我们采取从阿里云镜像下载，国内标杆的速度还是可以相信的。

centos7环境下安装

# step 1: 安装必要的一些系统工具
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
# Step 2: 添加软件源信息
sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# Step 3
sudo sed -i 's+download.docker.com+mirrors.aliyun.com/docker-ce+' /etc/yum.repos.d/docker-ce.repo
# Step 4: 更新并安装Docker-CE
sudo yum makecache fast
sudo yum -y install docker-ce
# Step 4: 开启Docker服务
sudo systemctl start docker

# 注意：

# 安装指定版本的Docker-CE:
# Step 1: 查找Docker-CE的版本:
# yum list docker-ce.x86_64 --showduplicates | sort -r
#   Loading mirror speeds from cached hostfile
#   Loaded plugins: branch, fastestmirror, langpacks
#   docker-ce.x86_64            17.03.1.ce-1.el7.centos            docker-ce-stable
#   docker-ce.x86_64            17.03.1.ce-1.el7.centos            @docker-ce-stable
#   docker-ce.x86_64            17.03.0.ce-1.el7.centos            docker-ce-stable
#   Available Packages

# Step2: 安装指定版本的Docker-CE: (VERSION例如上面的17.03.0.ce.1-1.el7.centos)
# sudo yum -y install docker-ce-[VERSION]

这里我们安装 docker-ce-18.09.9 版本

yum install docker-ce-18.09.9 docker-ce-cli-18.09.9 containerd.io -y

查看信息

[root@master1 ~]# docker info
Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 0
Server Version: 18.09.9
Storage Driver: overlay2
 Backing Filesystem: xfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: systemd
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: 72cec4be58a9eb6b2910f5d10f1c01ca47d231c0
runc version: N/A
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 3.10.0-1160.42.2.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 7.638GiB
Name: master1
ID: LMUO:P3LI:NOPD:RNMA:7ZRY:O7I7:VTDA:L67E:245C:F7VV:IZKK:OKOD
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:
 harbor.k8s.local
 127.0.0.0/8
Registry Mirrors:
 https://ot2k4d59.mirror.aliyuncs.com/
Live Restore Enabled: false
Product License: Community Engine

到这里我们docker的安装就完成了
接下来我们需要弄清楚docker应该如何使用

基本操作

拉取镜像，本地没有会默认从docker源下载最新版的（可指定版本如nginx:1.7.9）
[root@master1 ~]# docker pull busybox
Using default tag: latest
latest: Pulling from library/busybox
3cb635b06aa2: Pull complete 
Digest: sha256:b5cfd4befc119a590ca1a81d6bb0fa1fb19f1fbebd0397f25fae164abe1e8a6a
Status: Downloaded newer image for busybox:latest

#查看是否有镜像
[root@master1 ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
busybox             latest              ffe9d497c324        2 weeks ago