navsection: installguide
title: Install the Git server
...
+{% comment %}
+Copyright (C) The Arvados Authors. All rights reserved.
+
+SPDX-License-Identifier: CC-BY-SA-3.0
+{% endcomment %}
Arvados allows users to create their own private and public git repositories, and clone/push them using SSH and HTTPS.
It is not strictly necessary to deploy _both_ SSH and HTTPS access, but we recommend deploying both:
* SSH is a more appropriate way to authenticate from a user's workstation because it does not require managing tokens on the client side;
* HTTPS is a more appropriate way to authenticate from a shell VM because it does not depend on SSH agent forwarding (SSH clients' agent forwarding features tend to behave as if the remote machine is fully trusted).
+* HTTPS is also used by Arvados Composer to access git repositories from the browser.
The HTTPS instructions given below will not work if you skip the SSH setup steps.
h2. Generate an API token
-On the API server, if you are using RVM:
-
-<notextile>
-<pre><code>gitserver:~$ <span class="userinput">cd /var/www/arvados-api/current</span>
-gitserver:/var/www/arvados-api/current$ <span class="userinput">sudo -u www-data RAILS_ENV=production `which rvm-exec` default bundle exec ./script/create_superuser_token.rb</span>
-zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
-</code></pre>
-</notextile>
-
-If you are not using RVM:
-
-<notextile>
-<pre><code>gitserver:~$ <span class="userinput">cd /var/www/arvados-api/current</span>
-gitserver:/var/www/arvados-api/current$ <span class="userinput">sudo -u www-data RAILS_ENV=production bundle exec ./script/create_superuser_token.rb</span>
-zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
-</code></pre>
-</notextile>
+{% assign railshost = "gitserver" %}
+{% assign railscmd = "bundle exec ./script/create_superuser_token.rb" %}
+{% assign railsout = "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz" %}
+Use the following command to generate an API token. {% include 'install_rails_command' %}
Copy that token; you'll need it in a minute.
</code></pre>
</notextile>
+{% include 'install_git' %}
+
h2. Create a "git" user and a storage directory
Gitolite and some additional scripts will be installed in @/var/lib/arvados/git@, which means hosted repository data will be stored in @/var/lib/arvados/git/repositories@. If you choose to install gitolite in a different location, make sure to update the @git_repositories_dir@ entry in your API server's @application.yml@ file accordingly: for example, if you install gitolite at @/data/gitolite@ then your @git_repositories_dir@ will be @/data/gitolite/repositories@.
h2. Install gitolite
-Check "https://github.com/sitaramc/gitolite/tags":https://github.com/sitaramc/gitolite/tags for the latest stable version. This guide was tested with @v3.6.3@. _Versions below 3.0 are missing some features needed by Arvados, and should not be used._
+Check "https://github.com/sitaramc/gitolite/tags":https://github.com/sitaramc/gitolite/tags for the latest stable version. This guide was tested with @v3.6.4@. _Versions below 3.0 are missing some features needed by Arvados, and should not be used._
Download and install the version you selected.
<notextile>
<pre><code>git@gitserver:~$ <span class="userinput">echo 'PATH=$HOME/bin:$PATH' >.profile</span>
git@gitserver:~$ <span class="userinput">source .profile</span>
-git@gitserver:~$ <span class="userinput">git clone --branch <b>v3.6.3</b> git://github.com/sitaramc/gitolite</span>
+git@gitserver:~$ <span class="userinput">git clone --branch <b>v3.6.4</b> https://github.com/sitaramc/gitolite</span>
...
Note: checking out '5d24ae666bfd2fa9093d67c840eb8d686992083f'.
...
h3. Configure the API server to advertise the correct SSH URLs
-In your API server's @application.yml@ file, add the following entry:
+Edit the cluster config at @/etc/arvados/config.yml@ and set @Services.GitSSH.ExternalURL@. Replace @uuid_prefix@ with your cluster id.
<notextile>
-<pre><code>git_repo_ssh_base: "git@git.<span class="userinput">uuid_prefix.your.domain</span>:"
+<pre><code>Clusters:
+ <span class="userinput">uuid_prefix</span>:
+ Services:
+ GitSSH:
+ ExternalURL: <span class="userinput">git@git.uuid_prefix.your.domain:</span>
</code></pre>
</notextile>
<notextile>
<pre><code>~$ <span class="userinput">sudo yum install git arvados-git-httpd</span>
+~$ <span class="userinput">sudo systemctl enable arvados-git-httpd</span>
</code></pre>
</notextile>
<notextile>
<pre><code>~$ <span class="userinput">arvados-git-httpd -h</span>
-Usage of arvados-git-httpd:
- -address="0.0.0.0:80": Address to listen on, "host:port".
- -git-command="/usr/bin/git": Path to git executable. Each authenticated request will execute this program with a single argument, "http-backend".
- -repo-root="/path/to/cwd": Path to git repositories.
+[...]
+Usage: arvados-git-httpd [-config path/to/arvados/git-httpd.yml]
+[...]
~$ <span class="userinput">git http-backend</span>
Status: 500 Internal Server Error
Expires: Fri, 01 Jan 1980 00:00:00 GMT
h3. Enable arvados-git-httpd
-On Debian-based systems, install runit:
+{% include 'notebox_begin' %}
-<notextile>
-<pre><code>~$ <span class="userinput">sudo apt-get install runit</span>
-</code></pre>
-</notextile>
+The arvados-git-httpd package includes configuration files for systemd. If you're using a different init system, you'll need to configure a service to start and stop an @arvados-git-httpd@ process as desired.
-On Red Hat-based systems, "install runit from source":http://smarden.org/runit/install.html or use an alternative daemon supervisor.
+{% include 'notebox_end' %}
-Configure runit to run arvados-git-httpd, making sure to update the API host to match your site:
+Edit the cluster config at @/etc/arvados/config.yml@ and set the following values. Replace @uuid_prefix@ with your cluster id.
<notextile>
-<pre><code>~$ <span class="userinput">cd /etc/sv</span>
-/etc/sv$ <span class="userinput">sudo mkdir arvados-git-httpd; cd arvados-git-httpd</span>
-/etc/sv/arvados-git-httpd$ <span class="userinput">sudo mkdir log</span>
-/etc/sv/arvados-git-httpd$ <span class="userinput">sudo sh -c 'cat >log/run' <<'EOF'
-#!/bin/sh
-mkdir -p main
-chown git:git main
-exec chpst -u git:git svlogd -tt main
-EOF</span>
-/etc/sv/arvados-git-httpd$ <span class="userinput">sudo sh -c 'cat >run' <<'EOF'
-#!/bin/sh
-export ARVADOS_API_HOST=<b>uuid_prefix.your.domain</b>
-export GITOLITE_HTTP_HOME=/var/lib/arvados/git
-export GL_BYPASS_ACCESS_CHECKS=1
-export PATH="$PATH:/var/lib/arvados/git/bin"
-exec chpst -u git:git arvados-git-httpd -address=:9001 -git-command=/var/lib/arvados/git/gitolite/src/gitolite-shell -repo-root=<b>/var/lib/arvados/git</b>/repositories 2>&1
-EOF</span>
-/etc/sv/arvados-git-httpd$ <span class="userinput">sudo chmod +x run log/run</span>
+<pre><code>Clusters:
+ <span class="userinput">uuid_prefix</span>:
+ Services:
+ GitHTTP:
+ ExternalURL: <span class="userinput">https://git.uuid_prefix.your.domain/</span>
+ InternalURLs:
+ <span class="userinput">"http://localhost:9001": {}</span>
+ Git:
+ GitCommand: <span class="userinput">/var/lib/arvados/git/gitolite/src/gitolite-shell</span>
+ GitoliteHome: <span class="userinput">/var/lib/arvados/git</span>
+ Repositories: <span class="userinput">/var/lib/arvados/git/repositories</span>
</code></pre>
</notextile>
-If you are using a different daemon supervisor, or if you want to test the daemon in a terminal window, an equivalent shell command to run arvados-git-httpd is:
+Make sure to include the trailing slash for @Services.GitHTTP.ExternalURL@.
+
+Restart the systemd service to ensure the new configuration is used.
+
<notextile>
-<pre><code>sudo -u git \
- ARVADOS_API_HOST=<span class="userinput">uuid_prefix.your.domain</span> \
- GITOLITE_HTTP_HOME=/var/lib/arvados/git \
- GL_BYPASS_ACCESS_CHECKS=1 \
- PATH="$PATH:/var/lib/arvados/git/bin" \
- arvados-git-httpd -address=:9001 -git-command=/var/lib/arvados/git/gitolite/src/gitolite-shell -repo-root=/var/lib/arvados/git/repositories 2>&1
+<pre><code>~$ <span class="userinput">sudo systemctl restart arvados-git-httpd</span>
</code></pre>
</notextile>
ssl_certificate <span class="userinput">/YOUR/PATH/TO/cert.pem</span>;
ssl_certificate_key <span class="userinput">/YOUR/PATH/TO/cert.key</span>;
+ # The server needs to accept potentially large refpacks from push clients.
+ client_max_body_size 50m;
+
location / {
proxy_pass http://arvados-git-httpd;
}
</code></pre>
</notextile>
-h3. Configure the API server to advertise the correct HTTPS URLs
+h2. Restart Nginx
-In your API server's @application.yml@ file, add the following entry:
+Restart Nginx to make the Nginx and API server configuration changes take effect.
<notextile>
-<pre><code>git_repo_http_base: https://git.<span class="userinput">uuid_prefix.your.domain</span>/
+<pre><code>gitserver:~$ <span class="userinput">sudo nginx -s reload</span>
</code></pre>
</notextile>
-Make sure to include the trailing slash.
+h2. Clone Arvados repository
-h2. Restart Nginx
+Here we create a repository object which will be used to set up a hosted clone of the arvados repository on this cluster.
-Restart Nginx to make the Nginx and API server configuration changes take effect.
+<notextile>
+<pre><code>~$ <span class="userinput">uuid_prefix=`arv --format=uuid user current | cut -d- -f1`</span>
+~$ <span class="userinput">echo "Site prefix is '$uuid_prefix'"</span>
+~$ <span class="userinput">all_users_group_uuid="$uuid_prefix-j7d0g-fffffffffffffff"</span>
+~$ <span class="userinput">repo_uuid=`arv --format=uuid repository create --repository "{\"owner_uuid\":\"$uuid_prefix-tpzed-000000000000000\", \"name\":\"arvados\"}"`</span>
+~$ <span class="userinput">echo "Arvados repository uuid is '$repo_uuid'"</span>
+</code></pre></notextile>
+
+Create a link object to make the repository object readable by the "All users" group, and therefore by every active user. This makes it possible for users to run the bundled Crunch scripts by specifying @"script_version":"master","repository":"arvados"@ rather than pulling the Arvados source tree into their own repositories.
<notextile>
-<pre><code>gitserver:~$ <span class="userinput">sudo nginx -s reload</span>
+<pre><code>~$ <span class="userinput">read -rd $'\000' newlink <<EOF; arv link create --link "$newlink"</span>
+<span class="userinput">{
+ "tail_uuid":"$all_users_group_uuid",
+ "head_uuid":"$repo_uuid",
+ "link_class":"permission",
+ "name":"can_read"
+}
+EOF</span>
+</code></pre></notextile>
+
+In a couple of minutes, your arvados-git-sync cron job will create an empty repository on your git server. Seed it with the real arvados repository. If your git credential helpers were configured correctly when you "set up your shell server":install-shell-server.html, the "git push" command will use your API token instead of prompting you for a username and password.
+
+<notextile>
+<pre><code>~$ <span class="userinput">cd /tmp</span>
+/tmp$ <span class="userinput">git clone --bare https://github.com/arvados/arvados.git</span>
+/tmp <span class="userinput">git --git-dir arvados.git push https://git.<b>uuid_prefix.your.domain</b>/arvados.git '*:*'</span>
+</code></pre>
+</notextile>
+
+If you did not set up a HTTPS service, you can push to <code>git@git.uuid_prefix.your.domain:arvados.git</code> using your SSH key, or by logging in to your git server and using sudo.
+
+<notextile>
+<pre><code>gitserver:~$ <span class="userinput">sudo -u git -i bash</span>
+git@gitserver:~$ <span class="userinput">git clone --bare https://github.com/arvados/arvados.git /tmp/arvados.git</span>
+git@gitserver:~$ <span class="userinput">cd /tmp/arvados.git</span>
+git@gitserver:/tmp/arvados.git$ <span class="userinput">gitolite push /var/lib/arvados/git/repositories/<b>your_arvados_repo_uuid</b>.git '*:*'</span>
</code></pre>
</notextile>
projects / arvados.git / blobdiff