Docker仓库管理
一.简介
仓库是一个存放镜像的地方
二.基本操作
1.docker research来搜寻官方镜像，以ubuntu为例
root@node4:~/webNginx# docker search ubuntu
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
ubuntu Ubuntu is a Debian-based Linux operating s... 5264 [OK]
ubuntu-upstart Upstart is an event-based replacement for ... 69 [OK]
rastasheep/ubuntu-sshd Dockerized SSH service, built on top of of... 61 [OK]
ubuntu-debootstrap debootstrap --variant=minbase --components... 27 [OK]
torusware/speedus-ubuntu Always updated official Ubuntu docker imag... 27 [OK]
nickistre/ubuntu-lamp LAMP server on Ubuntu 13 [OK]
nuagebec/ubuntu Simple always updated Ubuntu docker images... 12 [OK]
nickistre/ubuntu-lamp-wordpress LAMP on Ubuntu with wp-cli installed 8 [OK]
nimmis/ubuntu This is a docker images different LTS vers... 6 [OK]
maxexcloo/ubuntu Base image built on Ubuntu with init, Supe... 2 [OK]
admiringworm/ubuntu Base ubuntu images based on the official u... 1 [OK]
jordi/ubuntu Ubuntu Base Image 1 [OK]
darksheer/ubuntu Base Ubuntu Image -- Updated hourly 1 [OK]
labengine/ubuntu Images base ubuntu 0 [OK]
datenbetrieb/ubuntu custom flavor of the official ubuntu base ... 0 [OK]
vcatechnology/ubuntu A Ubuntu image that is updated daily 0 [OK]
teamrock/ubuntu TeamRock's Ubuntu image configured with AW... 0 [OK]
lynxtp/ubuntu https://github.com/lynxtp/docker-ubuntu 0 [OK]
ustclug/ubuntu ubuntu image for docker with USTC mirror 0 [OK]
widerplan/ubuntu Our basic Ubuntu images. 0 [OK]
esycat/ubuntu Ubuntu LTS 0 [OK]
webhippie/ubuntu Docker images for ubuntu 0 [OK]
konstruktoid/ubuntu Ubuntu base image 0 [OK]
smartentry/ubuntu ubuntu with smartentry 0 [OK]
uvatbc/ubuntu Ubuntu images with unprivileged user 0 [OK]
root@node4:~/webNginx#
上面这些镜像都可以通过docker pull来拉下来
三.私有仓库
构建私有仓库的工具docker-registry
1.安装运行docker-registry工具
root@node4:~/webNginx# docker run -d -p 5000:5000 registry
此处如果端口被占用的解除端口占用才能用
查看端口是否占用命令netstat -a | grep 5000
解除端口命令
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root@node4:~# lsof -i:5000
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
docker-pr 23421 root 4u IPv6 9741894 0t0 TCP *:5000 (LISTEN)
root@node4:~# kill -9 23421
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2.使用registry镜像来启动本地私有仓库，例如陪Amazon s3服务器
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root@node4:~/webNginx# docker run \
-e SETTINGS_FLAVOR=s3 \
-e AWS_BUCKET=acme-docker \
-e STORAGE_PATH=/registry \
-e AWS_KEY=AKIAHSHB43HS3J92MXZ \
-e AWS_SECRET=xdDowwlK7TJajV1Y7EoOZrmuPEJlHYcNP2k4j49T \
-e SEARCH_BACKEND=sqlalchemy \
-p 5000:5000 \
registry
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或
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sudo docker run -d -p 5000:5000 -v /home/user/registry-conf:/registry-conf -e DOCKER_REGISTRY_CONFIG=/registry-conf/config.yml registry
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3.默认情况下，仓库会被创建在tmp/registry下，但我们能通过-v参数指定镜像存储目录
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sudo docker run -d -p 5000:5000 -v /opt/data/registry:/tmp/registry registry
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4.安装Ubuntu和CentOS等发行版
a.Ubuntu
apt-get install -y build-essential python-dev libevent-dev python-pip liblzma-dev
pip install docker-registry
b.CentOS
sudo yum install -y python-devel libevent-devel python-pip gcc xz-devel
sudo python-pip install docker-registry
c.从docker-registry中下载源码进行安装
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sudo apt-get install build-essential python-dev libevent-dev python-pip libssl-dev liblzma-dev libffi-dev
git clone https://github.com/docker/docker-registry.git
cd docker-registry
sudo python setup.py install
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5.修改配置文件，主要修改 dev 模板段的 storage_path 到本地的存储仓库的路径。
cp config/config_sample.yml config/config.yml
6.后启动 Web 服务。
sudo gunicorn -c contrib/gunicorn.py docker_registry.wsgi:application或者sudo gunicorn --access-logfile - --error-logfile - -k gevent -b 0.0.0.0:5000 -w 4 --max-requests 100 docker_registry.wsgi:application
此时使用 curl 访问本地的 5000 端口，看到输出 docker-registry 的版本信息说明运行成功。