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+# Mirroring Ceph
+Ceph is primarily distributed from download.ceph.com which is based in the US.
+
+However, globally there are multiple mirrors which offer the same content. Often
+faster than downloading from the primary source.
+
+Using the script found in this directory you can easily mirror Ceph to your local
+datacenter and serve packages from there to your servers.
+
+## Guidelines
+If you want to mirror Ceph please follow these guidelines:
+* Please use a mirror close to you
+* Do not sync in a shorter interval than 3 hours
+* Avoid syncing at minute 0 of the hour, use something between 0 and 59.
+
+## Mirror script
+The 'mirror-ceph.sh' script is written in Bash and will use rsync to mirror
+all the contents to a local directory.
+
+Usage is simple:
+
+<pre>
+./mirror-ceph.sh -q -s eu -t /srv/mirrors/ceph
+</pre>
+
+This example will mirror all contents from the source 'eu' which is *eu.ceph.com*.
+
+### Running with CRON
+The script can easily be run with CRON:
+
+<pre>
+13 1,5,9,13,17,21 * * * /home/ceph/mirror-ceph.sh -q -s eu -t /srv/mirrors/ceph
+</pre>
+
+This will sync from *eu.ceph.com* on 01:13, 05:13, 09:13, 13:13, 17:13 and 21:13.
+
+## Becoming a mirror source
+If you have spare hardware and resources available you can opt for becoming a mirror
+source for others.
+
+A few things which are required:
+* 1Gbit connection or more
+* Native IPv4 **and** IPv6
+* HTTP access
+* rsync access
+* 2TB of storage or more
+* Monitoring of the mirror/source
+
+You can then run the *mirror-ceph.sh* script and mirror all the contents.
+
+### Logs
+The project wants to analyze the downloads of Ceph a few times a year. From mirrors
+we expect that they store HTTP access logs for at least 6 months so they can be
+used for analysis.
+
+### DNS
+Using a DNS CNAME record a XX.ceph.com entry can be forwarded to the server and
+added to the mirror script.
+
+You can request such a DNS entry on the ceph mailinglists.
+
+### Apache configuration
+A Apache 2.4 VirtualHost example configuration can be found the Git repository
+with the name *apache2.vhost.conf*