InstallCephWithQuattor: Difference between revisions
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== Overview == | == Overview == | ||
Prior to the installation, you must assign the roles to the machines of the cluster. The possible roles are : MON, MDS, OSD, and DEPLOY. You need at least one MON machine, but to avoid bottlenecks when the number of OSD increases, it's better to have 3 MON machines (always have an odd number of MON machines to be able to have a quorum). The MDS is only needed if you want to use CephFS. The OSD daemons will run on machines that will contains the storage disks. | The component ncm-ceph is based on ceph-deploy. It is documented [http://quattor-core.readthedocs.org/en/latest/components/ceph/ here]. | ||
Prior to the installation, you must assign the roles to the machines of the future cluster. The possible roles are : MON, MDS, OSD, and DEPLOY. The machine with the DEPLOY role will be the one from which deployment will be done, and so, it is the machine on which the component ncm-ceph will be executed. You need at least one MON machine, but to avoid bottlenecks when the number of OSD increases, it's better to have 3 MON machines (always have an odd number of MON machines to be able to have a quorum). The MDS is only needed if you want to use CephFS. The OSD daemons will run on machines that will contains the storage disks. When doing tests, you can put the MON daemons on OSD machines, but on large cluster in production, it's better to put the MON daemons on dedicated machines. | |||
The layout and the parameters of the cluster are described in the template site/ceph. | The layout and the parameters of the cluster are described in the template site/ceph. | ||
Revision as of 16:04, 17 November 2015
Overview
The component ncm-ceph is based on ceph-deploy. It is documented here.
Prior to the installation, you must assign the roles to the machines of the future cluster. The possible roles are : MON, MDS, OSD, and DEPLOY. The machine with the DEPLOY role will be the one from which deployment will be done, and so, it is the machine on which the component ncm-ceph will be executed. You need at least one MON machine, but to avoid bottlenecks when the number of OSD increases, it's better to have 3 MON machines (always have an odd number of MON machines to be able to have a quorum). The MDS is only needed if you want to use CephFS. The OSD daemons will run on machines that will contains the storage disks. When doing tests, you can put the MON daemons on OSD machines, but on large cluster in production, it's better to put the MON daemons on dedicated machines.
The layout and the parameters of the cluster are described in the template site/ceph.