关于什么是docker，请参考http://baike.baidu.com/view/11854949.htm?fr=aladdin
我的服务器是ubuntu server 12.04，硬件是dell R420
一、安装
1、安装源
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apt-keyadv --keyserver hkp:
//keyserver
.ubuntu.com:80 --recv-keys36A1D7869245C8950F966E92D8576A8BA88D21E9
sh -c
"echo deb https://get.docker.io/ubuntu docker main>/etc/apt/sources.list.d/docker.list"
apt-getupdate
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2、安装docker
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apt-get
install
lxc-docker
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3、下载tar包并加入镜像里
一般下载镜像的时候，都是先docker search image_name，然后docker pullimage_name
但由于最近GFW屏蔽了网络，在现在的时候会出现以下错误，根本pull不了镜像。
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Pullingrepository centos
2014
/05/19
13:35:11 Gethttps:
//cdn-registry-1
.docker.io
/v1/repositories/library/centos/tags
:
read
tcp162.159.253.251:443: connection timed out
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所以为了解决此问题，我就从别的地方下载了打包好的tar（后边会解释然后自己打包的），然后使用docker load导入
先下载（有centos与ubuntu）
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wget http:
//docker
.widuu.com
/centos
.
tar
wget http:
//docker
.widuu.com
/ubuntu
.
tar
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加入到镜像里
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docker load -i centos.
tar
docker load -i ubuntu.
tar
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查看镜像列表
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root@ip-10-10-25-218:~
/docker/images
#docker load -i centos.tar
root@ip-10-10-25-218:~
/docker/images
#docker load -i ubuntu.tar
root@ip-10-10-25-218:~
/docker/images
#docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
<none> <none> 607347d2a946 3 months ago 300.2 MB
ubuntu
/widuu
latest 963b9d0e10ba 3 monthsago 155 MB
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给centos的改个名
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root@ip-10-10-25-218:~
/docker/images
#docker tag 607 centos:latest
root@ip-10-10-25-218:~
/docker/images
#docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
centos latest 607347d2a946 3 months ago 300.2 MB
ubuntu
/widuu
latest 963b9d0e10ba 3 monthsago 155 MB
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测试镜像是否可用
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root@ip-10-10-25-218:~
/docker/images
#docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
centos latest 607347d2a946 3 months ago 300.2 MB
ubuntu
/widuu
latest 963b9d0e10ba 3 months ago 155 MB
root@ip-10-10-25-218:~
/docker/images
#docker run centos /bin/echo "hello,i'm centos system"
hello,i'mcentos system
root@ip-10-10-25-218:~
/docker/images
#docker run ubuntu/widuu /bin/echo "hello,i'm ubuntu system"
hello,i'mubuntu system
root@ip-10-10-25-218:~
/docker/images
#
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使用交换模式
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bash
-4.1
#root@ip-10-10-25-218:~/docker/exercise/node# docker run -i -t centos /bin/bash
bash
-4.1
#ifconfig
eth0 Link encap:Ethernet HWaddr BA:08:86:7F:F8:48
inet addr:172.17.0.6 Bcast:0.0.0.0 Mask:255.255.0.0
inet6 addr: fe80::b808:86ff:fe7f:f848
/64Scope
:Link
UP BROADCAST RUNNING MTU:1500 Metric:1
RX packets:6 errors:0 dropped:2overruns:0 frame:0
TX packets:2 errors:0 dropped:0overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:488 (488.0 b) TX bytes:168 (168.0 b)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1
/128
Scope:Host
UP LOOPBACK RUNNING MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0overruns:0 frame:0
TX packets:0 errors:0 dropped:0overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
bash
-4.1
# exit
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退出有2中一种是完全退出，使用exit，另外一中是不完全退出，使用ctrl-p与ctrl-q
这样你推人退出了，但容器状态还是存在。
可用使用docker attach CONTAINER ID来重新进入
二、私有库
由于GFW，所以玩docker没办法pull与push，并且为了安全考虑，为了解决就搭建了私有库。
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git clonehttps:
//github
.com
/dotcloud/docker-registry
.git
cddocker-registry
cd
config
cpconfig_sample.yml config.yml
cd
..
apt-getinstall python-pip gunicorn build-essential python-dev libevent-dev
python-pipliblzma-dev -y
pipinstall -r requirements.txt
gunicorn-k gevent --max-requests 100 --graceful-timeout 3600 -t 3600 -b localhost:5000-w 8 -D --access-logfile
/tmp/gunicorn
.log docker_registry.wsgi:application
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客户端推送镜像到私有库
1、 先注册账号
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docker login localhost:5000
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依次输入你的账号、密码、email
2、给提交的镜像打标签
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root@ip-10-10-25-218:~
/docker/exercise/node
#docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
centos-init latest 5abf7cce3767 3 minutes ago 1.034 GB
centos latest 607347d2a946 3 months ago 300.2 MB
ubuntu
/widuu
latest 963b9d0e10ba 3 months ago 155 MB
root@ip-10-10-25-218:~
/docker/exercise/node
# docker tag5abf7cce3767 localhost:5000/centos-init
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3、推送到私有库
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root@ip-10-10-25-218:~
/docker/exercise/node
#docker push localhost:5000/centos-init
The pushrefers to a repository [localhost:5000
/centos-init
] (len: 1)
Sendingimage list
Pushingrepository localhost:5000
/centos-init
(1 tags)
Image384630bcda7c already pushed, skipping
Image607347d2a946 already pushed, skipping
5abf7cce3767:Image successfully pushed
Pushingtag
for
rev [5abf7cce3767] on{http:
//localhost
:5000
/v1/repositories/centos-init/tags/latest
}
root@ip-10-10-25-218:~
/docker/exercise/node
#docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
centos-init latest 5abf7cce3767 6 minutes ago 1.034 GB
localhost:5000
/centos-init
latest 5abf7cce3767 6 minutes ago 1.034 GB
centos latest 607347d2a946 3 months ago 300.2 MB
ubuntu
/widuu
latest 963b9d0e10ba 3 monthsago 155 MB
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三、自制镜像
参考http://docs.docker.io/articles/baseimages/
我是在ubuntu系统，所以使用https://github.com/dotcloud/docker/blob/master/contrib/mkimage-rinse.sh
由于使用rinse创建，所以需要安装
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apt-get
install
rinse
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安装centos 5系统
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bash
mkimage-rinse.sh denglei
/centos
centos-5
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安装centos 6系统
检测
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root@ip-10-10-25-218:
/tmp
#docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
denglei
/centos
6.5 18eb9205a927 2 minutes ago 127.2 MB
denglei
/centos
5.10 2b76af55f4cc 5 minutes ago 81.08 MB
centos-test2 latest 21639e6b708a About an hour ago 356.7 MB
ubuntu-
test
latest a95d7aa1d991 39 hours ago 161.8 MB
centos-
test
latest 28870be2e716 39 hours ago 356.7 MB
centos-omsa latest d3c15db5624e 39 hours ago 1.048 GB
centos-init latest 58ef41091c2b 11 days ago 1.055 GB
localhost:5000
/centos-init
latest 5abf7cce3767 11 days ago 1.034 GB
centos latest 607347d2a946 4 months ago 300.2 MB
ubuntu
/widuu
latest 963b9d0e10ba 4 monthsago 155 MB
root@ip-10-10-25-218:
/tmp
#docker run denglei/centos:5.10 /bin/echo "hello,i'm centos 5.10system"
hello,i'mcentos 5.10 system
root@ip-10-10-25-218:
/tmp
#docker run denglei/centos:6.5 /bin/echo "hello,i'm centos 6.5 system"
hello,i'm centos 6.5 system
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docker里centos无法ssh的问题
需要关闭pam
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sed
-i
"s/UsePAM.*/UsePAMno/g"
/etc/ssh/sshd_config
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重启ssh服务
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/etc/init
.d
/sshd
restart
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同时别忘记设置密码
本文转自 reinxu 51CTO博客，原文链接：http://blog.51cto.com/dl528888/1427150，如需转载请自行联系原作者
