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PowerDNS backend for a global RADOS Gateway namespace 1267 950 Wido den Hollander

PowerDNS backend for a global RADOS Gateway namespace

At my hosting company PCextreme we are building a cloud offering based on Ceph and CloudStack. We call our cloud services Aurora. Our cloud services are composed out of two components: Compute and Objects. For our Aurora Objects service we…

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Deploying Ceph over IPv6 1500 1000 Wido den Hollander

Deploying Ceph over IPv6

I like to deploy Ceph clusters over IPv6. I actually think that’s the way forward. IPv4 is legacy just like iSCSI and NFS are. Last week I was at a customer deploying a new Ceph cluster and they wanted to…

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Calculating RADOS objects for RBD images 1257 958 Wido den Hollander

Calculating RADOS objects for RBD images

Ceph’s RBD (RADOS Block Device) is just a thin wrapper on top of RADOS, the object store of Ceph. It stripes (by default) over 4MB objects in RADOS. It’s very simple to calculate which RADOS object corresponds with which sector…

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Safely backing up your Ceph monitors 1562 1001 Wido den Hollander

Safely backing up your Ceph monitors

So you might wonder: Why do I need to make a backup of my Ceph monitors? I have multiple monitors. That’s true, but would you run into the very unfortunate situation where you loose all you monitors, you loose all…

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Changing the region of a RGW bucket 1500 1000 Wido den Hollander

Changing the region of a RGW bucket

As of Ceph version 0.67 (Dumpling) the Ceph Object Gateway aka RADOS Gateway supports regions. This allows you to create a geo-replicated Amazon S3 compatible service. While working on a setup we decided later in the process that we wanted…

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