I’ve recently updated some of my tutorials : Optimizing Hard Drive performances : I’ve updated SSD subject Luks : added more information on how auto mount automatically at boot a crypted partition. Xtrabackup : corrected a non working command LXC : modified containers files to avoid boot issues APT-Pinning : Added the command to install a package from a designed repository Sed : forgotten to add -i option which is so important Vagrant : Added an example to the quick tutorial

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Varnish is a real powerful cache solution for web servers. He is unfortunately not able to do it over SSL. Anyway, there is a solution by offloading it with Nginx. Here is a schema to get a better understanding : Nginx decrypt SSL, pass it in clear to Varnish. If Varnish got it, replies to Nginx which crypt back data to send to user. I’ve made a full documentation to get it working well, follow the link.

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In addition of object storage, Ceph is able to provide block devices. Ceph’s RADOS Block Device (RBD) provides access to block device images that are striped and replicated across the entire storage cluster. For example this is used to store Virtual Machines on OpenStack. With that solution, you’ve got a real fault tolerance system for your VM and distributed. The RBD part is an easy task when you’ve already setup a Ceph cluster.

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Be ready once again for FOSDEM 2014 ! I’m so exited to go there once again. Last year I missed some of you. If you want to meet me directly there, do not hesitate to contact me by mail. Thanks and see you there :-)

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Following the previous post, on Ceph Storage, I’ve updated my documentation with informations to play with OSD. I’ve covered : Setup OSD Remove OSD Use Ceph Ojects Storage Using the object storage system is not complicated and easily scalable. It’s a real pleasure to work with that kind of solutions. If you’re already working with other objects storage solutions, you won’t be lost.

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I finally started to play with Ceph to add it in production. I’m still impressed by this storage solution. Just to remind, Ceph is an open-source, massively scalable, software-defined storage system which provides object, block and file system storage (not yet ready for production usage) in a single platform. It runs on commodity hardware-saving you costs, giving you flexibility. And as it’s in the Linux kernel, it’s easy to consume.

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