An example of using the python-ceph library for thumbnailing service.
Thumbor is an opensource tool for thumbnail generation developed by globo.
The tool allows to make a number of operations (crop, resize, filters ...) directly via the URL. It also uses face detection algos or points of interest to enhance Crop …
A simple exemple to make Replication for RBD.
Based on this post from scuttlemonkey : http://ceph.com/dev-notes/incremental-snapshots-with-rbd/, here is a sample script to synchronize rbd image on a remote cluster (eg for backups). In the example below, the sync is made to an "archive" pool on the same …
The aim is showing that it is possible to create a low-cost storage, efficient and scalable, using opensource solutions. In the example below, I am using Ceph for scalability and reliability, combined with EnhanceIO to ensure very good performance.
The idea was to create a storage with two parts …
Create a disk with an insane size can be fun, but a little hard to remove.
Here's a little trick (use with caution!) to remove a too big image for rm rbd (if image is not initialized, or not fully).
$ rbd info rbdbigsize
rbd image 'rbdbigsize':
size …An exemple for migrating journal from file on the default location to a dedicated partition on /dev/sde1.
$ apt-get install hdparm
### Stop osd
$ service ceph stop osd.0
### Flush Journal
$ ceph-osd --flush-journal -i 0
### Create symlink to partition
$ rm /var/lib/ceph/osd/ceph-0/journal
$ ln -s /dev/sde1 /var …