fabiofalci / export-docker Goto Github PK

Export a Docker container to a lxc container

Python 100.00%

export-docker's Introduction

export-docker

Export a Docker container to a lxc container

How to use

sudo ./export-container.py <container id> <new container name>

Example:

$ sudo ./export-container.py f4e7e632964a registry
Exporting Docker container to a lxc container
Docker container id:  f4e7e632964a
New container name:  registry
Full container id  f4e7e632964a822bbd0e633b8ef8422c341d0b43d3e72a869c1154e461cf2302
Container exists [/var/lib/docker/containers/f4e7e632964a822bbd0e633b8ef8422c341d0b43d3e72a869c1154e461cf2302]? True
Rootfs exists [/var/lib/docker/devicemapper/mnt/f4e7e632964a822bbd0e633b8ef8422c341d0b43d3e72a869c1154e461cf2302/rootfs]? True
Init-rootfs exists [/var/lib/docker/devicemapper/mnt/f4e7e632964a822bbd0e633b8ef8422c341d0b43d3e72a869c1154e461cf2302-init/rootfs]? True
Copying rootfs...
Copying config files...
Creating run script...

It's all done! Now just type:
cd registry && sudo ./run.sh

Check the folder just created:

$ find registry/ -maxdepth 2
registry/
registry/rootfs
registry/rootfs/usr
registry/rootfs/home
...
registry/rootfs/tmp
registry/rootfs/root
registry/config.lxc.template
registry/run.sh

config.lxc.template: The lxc config file
run.sh: Script to run the container
rootfs/: Folder with all container files

To run:

$ sudo ./run.sh
root@f4e7e632964a:/#

Why

To have a lxc container independent from Docker (docker0 network interface is the only dependency)
To learn about lxc and Docker
For fun :)

export-docker's People

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zenny peacedata0 xakdeveloper simhaonline mtzro2003

export-docker's Issues

Doesn't use API; needs root; doesn't work with current version of docker

The docker binary exposes all the functions needed to do this without root access and without direct access to the docker paths. The current approach doesn't seem to be portable. Why can't the docker export command be used?

sudo ./export-container.py 9d8291fb57d4 test
Exporting Docker container to a lxc container
('Docker container id: ', '9d8291fb57d4')
('New container name: ', 'test')
('Full container id ', '9d8291fb57d474082ad4e91ab6625e5e9b8f2da673ede41bfad8647e13bf447b')
Container exists [/var/lib/docker/containers/9d8291fb57d474082ad4e91ab6625e5e9b8f2da673ede41bfad8647e13bf447b]? True
Traceback (most recent call last):
  File "./export-container.py", line 208, in <module>
    main()
  File "./export-container.py", line 199, in main
    container.is_valid_container()
  File "./export-container.py", line 50, in is_valid_container
    self.lxc_rootfs_exists()
  File "./export-container.py", line 64, in lxc_rootfs_exists
    lines = tuple(open(self.config, "r"))
IOError: [Errno 2] No such file or directory: '/var/lib/docker/containers/9d8291fb57d474082ad4e91ab6625e5e9b8f2da673ede41bfad8647e13bf447b/config.lxc'

config.lxc not present in the container directory

Thanks for this project, looks really interesting

I give it a try but it's complaining that config.lxc is not present in the container directory
Is it a file docker is supposed to create on it's own ?

I'm running Docker version 1.6.2, build 7c8fca2

Any idea will be appreciated
Thanks
Damien

sudo ./export-container.py 5d07d443d8d7 fluentdlxc01
Exporting Docker container to a lxc container
('Docker container id: ', '5d07d443d8d7')
('New container name: ', 'fluentdlxc01')
('Full container id ', '5d07d443d8d7ad6a5524d5bbcc4146ab3ed54ba52d9126d7e8105f49c99012ca')
Container exists [/var/lib/docker/containers/5d07d443d8d7ad6a5524d5bbcc4146ab3ed54ba52d9126d7e8105f49c99012ca]? True
Traceback (most recent call last):
  File "./export-container.py", line 208, in <module>
    main()
  File "./export-container.py", line 199, in main
    container.is_valid_container()
  File "./export-container.py", line 50, in is_valid_container
    self.lxc_rootfs_exists()
  File "./export-container.py", line 64, in lxc_rootfs_exists
    lines = tuple(open(self.config, "r"))
IOError: [Errno 2] No such file or directory: '/var/lib/docker/containers/5d07d443d8d7ad6a5524d5bbcc4146ab3ed54ba52d9126d7e8105f49c99012ca/config.lxc'

Container dir

sudo ls -l /var/lib/docker/containers/5d07d443d8d7ad6a5524d5bbcc4146ab3ed54ba52d9126d7e8105f49c99012ca
total 28
-rw------- 1 root root  785 Dec  4 08:46 5d07d443d8d7ad6a5524d5bbcc4146ab3ed54ba52d9126d7e8105f49c99012ca-json.log
-rw-r--r-- 1 root root 2132 Dec  4 08:46 config.json
-rw-r--r-- 1 root root  639 Dec  4 08:46 hostconfig.json
-rw-r--r-- 1 root root   13 Dec  4 08:44 hostname
-rw-r--r-- 1 root root  175 Dec  4 08:44 hosts
-rw-r--r-- 1 root root  249 Dec  4 08:44 resolv.conf
-rw-r--r-- 1 root root   71 Dec  4 08:44 resolv.conf.hash

fabiofalci / export-docker Goto Github PK

export-docker's Introduction

export-docker

How to use

Why

export-docker's People

Contributors

Stargazers

Watchers

Forkers

export-docker's Issues

Doesn't use API; needs root; doesn't work with current version of docker

config.lxc not present in the container directory

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