140 lines
5.2 KiB
Markdown
140 lines
5.2 KiB
Markdown
The [[walkthrough]] builds up a decentralized git repository setup, but
|
|
git-annex can also be used with a centralized bare repository, just like
|
|
git can. This tutorial shows how to set up a centralized repository hosted on
|
|
GitHub.
|
|
|
|
## set up the repository, and make a checkout
|
|
|
|
I've created a repository for technical talk videos, which you can
|
|
[fork on Github](https://github.com/joeyh/techtalks).
|
|
Or make your own repository on GitHub (or elsewhere) now.
|
|
|
|
On your laptop, [[install]] git-annex, and clone the repository:
|
|
|
|
# git clone git@github.com:joeyh/techtalks.git
|
|
# cd techtalks
|
|
|
|
Tell git-annex to use the repository, and describe where this clone is
|
|
located:
|
|
|
|
# git annex init 'my laptop'
|
|
init my laptop ok
|
|
|
|
Let's tell git-annex that GitHub doesn't support running git-annex-shell there.
|
|
This means you can't store annexed file *contents* on GitHub; it would
|
|
really be better to host the bare repository on your own server, which
|
|
would not have this limitation. (If you want to do that, check out
|
|
[[using_gitolite_with_git-annex]].)
|
|
|
|
# git config remote.origin.annex-ignore true
|
|
|
|
## add files to the repository
|
|
|
|
Add some files, obtained however.
|
|
|
|
# youtube-dl -t 'http://www.youtube.com/watch?v=b9FagOVqxmI'
|
|
# git annex add *.mp4
|
|
add Haskell_Amuse_Bouche-b9FagOVqxmI.mp4 (checksum) ok
|
|
(Recording state in git...)
|
|
# git commit -m "added a video. I have not watched it yet but it sounds interesting"
|
|
|
|
This file is available directly from the web; so git-annex can download it:
|
|
|
|
# git annex addurl http://kitenet.net/~joey/screencasts/git-annex_coding_in_haskell.ogg
|
|
addurl kitenet.net_~joey_screencasts_git-annex_coding_in_haskell.ogg
|
|
(downloading http://kitenet.net/~joey/screencasts/git-annex_coding_in_haskell.ogg ...)
|
|
(checksum...) ok
|
|
(Recording state in git...)
|
|
# git commit -a -m 'added a screencast I made'
|
|
|
|
Feel free to rename the files, etc, using normal git commands:
|
|
|
|
# git mv Haskell_Amuse_Bouche-b9FagOVqxmI.mp4 Haskell_Amuse_Bouche.mp4
|
|
# git mv kitenet.net_~joey_screencasts_git-annex_coding_in_haskell.ogg git-annex_coding_in_haskell.ogg
|
|
# git commit -m 'better filenames'
|
|
|
|
Now push your changes back to the central repository. This first time,
|
|
remember to push the git-annex branch, which is used to track the file
|
|
contents.
|
|
|
|
# git push origin master git-annex
|
|
To git@github.com:joeyh/techtalks.git
|
|
* [new branch] master -> master
|
|
* [new branch] git-annex -> git-annex
|
|
|
|
That push went fast, because it didn't upload large videos to GitHub.
|
|
To check this, you can ask git-annex where the contents of the videos are:
|
|
|
|
# git annex whereis
|
|
whereis Haskell_Amuse_Bouche.mp4 (1 copy)
|
|
767e8558-0955-11e1-be83-cbbeaab7fff8 -- here
|
|
ok
|
|
whereis git-annex_coding_in_haskell.ogg (2 copies)
|
|
00000000-0000-0000-0000-000000000001 -- web
|
|
767e8558-0955-11e1-be83-cbbeaab7fff8 -- here
|
|
ok
|
|
|
|
## make more checkouts
|
|
|
|
So far you have a central repository, and a checkout on a laptop.
|
|
Let's make another checkout that's used as a backup. You can put it anywhere
|
|
you like, just make it be somewhere your laptop can access. A few options:
|
|
|
|
* Put it on a USB drive that you can plug into the laptop.
|
|
* Put it on a desktop.
|
|
* Put it on some server in the local network.
|
|
* Put it on a remote VPS.
|
|
|
|
I'll use the VPS option, but these instructions should work for
|
|
any of the above.
|
|
|
|
# ssh server
|
|
server# sudo apt-get install git-annex
|
|
|
|
Clone the central repository as before. (If the clone fails, you need
|
|
to add your server's ssh public key to github -- see
|
|
[this page](http://help.github.com/ssh-issues/).)
|
|
|
|
server# git clone git@github.com:joeyh/techtalks.git
|
|
server# cd techtalks
|
|
server# git config remote.origin.annex-ignore true
|
|
server# git annex init 'backup'
|
|
init backup (merging origin/git-annex into git-annex...) ok
|
|
|
|
Notice that the server does not have the contents of any of the files yet.
|
|
If you run `ls`, you'll see broken symlinks. We want to populate this
|
|
backup with the file contents, by copying them from your laptop.
|
|
|
|
Back on your laptop, you need to configure a git remote for the backup.
|
|
Adjust the ssh url as needed to point to wherever the backup is. (If it
|
|
was on a local USB drive, you'd use the path to the repository instead.)
|
|
|
|
# git remote add backup ssh://server/~/techtalks
|
|
|
|
Now git-annex on your laptop knows how to reach the backup repository,
|
|
and can do things like copy files to it:
|
|
|
|
# git annex copy --to backup git-annex_coding_in_haskell.ogg
|
|
copy git-annex_coding_in_haskell.ogg (checking backup...)
|
|
12877824 2% 255.11kB/s 00:00
|
|
ok
|
|
|
|
You can also `git annex move` files to it, to free up space on your laptop.
|
|
And then you can `git annex get` files back to your laptop later on, as
|
|
desired.
|
|
|
|
After you use git-annex to move files around, remember to push,
|
|
which will broadcast its updated location information.
|
|
|
|
# git push
|
|
|
|
## take it farther
|
|
|
|
Of course you can create as many checkouts as you desire. If you have a
|
|
desktop machine too, you can make a checkout there, and use `git remote
|
|
add` to also let your desktop access the backup repository.
|
|
|
|
You can add remotes for each direct connection between machines you find you
|
|
need -- so make the laptop have the desktop as a remote, and the desktop
|
|
have the laptop as a remote, and then on either machine git-annex can
|
|
access files stored on the other.
|