The basic documentation about how you can use RBD with CloudStack Signed-off-by: Wido den Hollander <wido@xxxxxxxxx> --- doc/rbd/rbd-cloudstack.rst | 49 ++++++++++++++++++++++++++++++++++++++++++++ doc/rbd/rbd.rst | 2 +- 2 files changed, 50 insertions(+), 1 deletion(-) create mode 100644 doc/rbd/rbd-cloudstack.rst diff --git a/doc/rbd/rbd-cloudstack.rst b/doc/rbd/rbd-cloudstack.rst new file mode 100644 index 0000000..04e1a7c --- /dev/null +++ b/doc/rbd/rbd-cloudstack.rst @@ -0,0 +1,49 @@ +=================== + RBD and Apache CloudStack +=================== +You can use RBD to run instances on in Apache CloudStack. + +This can be done by adding a RBD pool as Primary Storage. + +There are a couple of prerequisites: +* You need to CloudStack 4.0 or higher +* Qemu on the Hypervisor has to be compiled with RBD enabled +* The libvirt version on the Hypervisor has to be at least 0.10 with RBD enabled + +Make sure you meet this requirements before installing the CloudStack Agent on the Hypervisor(s)! + +.. important:: To use RBD with CloudStack, you must have a running Ceph cluster! + +Limitations +------------- +Running instances from RBD has a couple of limitations: + +* An additional NFS Primary Storage pool is required for running System VM's +* Snapshotting RBD volumes is not possible (at this moment) +* Only one monitor can be configured + +Add Hypervisor +------------- +Please follow the official CloudStack documentation how to do this. + +There is no special way of adding a Hypervisor when using RBD, nor is any configuration needed on the hypervisor. + +Add RBD Primary Storage +------------- +Once the hypervisor has been added, log on to the CloudStack UI. + +* Infrastructure +* Primary Storage +* "Add Primary Storage" +* Select "Protocol" RBD +* Fill in your cluster information (cephx is supported) +* Optionally add the tag 'rbd' + +Now you should be able to deploy instances on RBD. + +RBD Disk Offering +------------- +Create a special "Disk Offering" which needs to match the tag 'rbd' so you can make sure the StoragePoolAllocator +chooses the RBD pool when searching for a suiteable storage pool. + +Since there is also a NFS storage pool it's possible that instances get deployed on NFS instead of RBD. diff --git a/doc/rbd/rbd.rst b/doc/rbd/rbd.rst index af1682f..6fd1999 100644 --- a/doc/rbd/rbd.rst +++ b/doc/rbd/rbd.rst @@ -31,7 +31,7 @@ the Ceph FS filesystem, and RADOS block devices simultaneously. QEMU and RBD <qemu-rbd> libvirt <libvirt> RBD and OpenStack <rbd-openstack> - + RBD and CloudStack <rbd-cloudstack> -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
