Bocker - 用100行bash实现Docker
jopen
9年前
Bocker是一个用100行bash实现Docker。
必备组件
运行bocker需要以下包。
- btrfs-progs
- iproute2
- iptables
- util-linux >= 2.25.2
由于大部分发行并没有搭载足够新的util-linux版本，所以你可能需要从此here外抓取源文件然后自己编译它。
另外你的系统需要用下面的配置。
- A btrfs filesystem mounted under/var/bocker
- A network bridge calledbridge0and an IP of 10.0.0.1/24
- IP forwarding enabled in/proc/sys/net/ipv4/ip_forward
- A firewall routing traffic frombridge0to a physical interface.
- Abase-imagewhich contains the filesystem to seed your container with.
For ease of use a Vagrantfile is included which will build the needed environment.
Even if you meet the above prerequisites you probably still want to run bocker in a virtual machine. Bocker runs as root and among other things needs to make changes to your network interfaces, routing table, and firewall rules. I can make no guarantees that it wont trash your system.
使用示例
$ bocker init base-image/ Created: img_84632 $ bocker images IMAGE_ID img_84632 $ bocker run img_84632 uname -sro Linux 3.10.0-123.20.1.el7.x86_64 GNU/Linux $ bocker ps CONTAINER_ID COMMAND ps_12277 uname -sro $ bocker logs ps_12277 Linux 3.10.0-123.20.1.el7.x86_64 GNU/Linux $ bocker rm ps_12277 Removed: ps_12277 $ bocker run img_84632 which wget which: no wget in (/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin) $ bocker run img_84632 yum install -y wget Installing : wget-1.14-10.el7_0.1.x86_64 1/1 Verifying : wget-1.14-10.el7_0.1.x86_64 1/1 Installed : wget.x86_64 0:1.14-10.el7_0.1 Complete! $ bocker ps CONTAINER_ID COMMAND ps_14099 which wget ps_43377 yum install -y wget $bocker commit ps_43377 img_84632 Removed: img_84632 Created: img_84632 $ bocker run img_84632 which wget /usr/bin/wget $ bocker rm ps_14099 Removed: ps_14099 $ bocker rm ps_43377 Removed: ps_43377 $ bocker rm ps_95942 Removed: ps_95942 $ bocker rm img_84632 Removed: img_84632
功能: 当前实现的
- docker build†
- docker images
- docker ps
- docker run
- docker logs
- docker commit
- docker rm/docker rmi
- Networking
†bocker initprovides a very limited implemetation ofdocker build
功能: 还没有实现的
- Port Forwarding
- Data Volumes
- Data Volume Containers