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vm:proxmox:ceph [2022/09/21 09:31] niziak |
vm:proxmox:ceph [2022/09/26 21:40] (current) niziak |
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| * MDS - (Meta Data Server) | * MDS - (Meta Data Server) | ||
| * RBD - (RADOS Block Device) - A Ceph component that provides access to Ceph storage as a thinly provisioned block device. When an application writes to a Block Device, Ceph implements data redundancy and enhances I/O performance by replicating and striping data across the Storage Cluster. | * RBD - (RADOS Block Device) - A Ceph component that provides access to Ceph storage as a thinly provisioned block device. When an application writes to a Block Device, Ceph implements data redundancy and enhances I/O performance by replicating and striping data across the Storage Cluster. | ||
| + | |||
| + | |||
| + | ===== Ceph RADOS Block Devices (RBD) ===== | ||
| + | |||
| + | CEPH provides only a pools of object. To use it for VMs block devices additional layer (RBD) is needed. | ||
| + | It can be created manually or during CEPH pool creation (option ''Add as Storage'') | ||
| + | |||
| + | ===== Ceph FS ===== | ||
| + | It is implementation of POSIX compliant FS top of CEPH POOL. | ||
| + | It requires one pool for data (block data) and to keep filesystem information (metadata). | ||
| + | Performance strictly depends on metadata pool, so it is recommended to use for backups files. | ||
| + | |||
| + | Used ports: | ||
| + | * TCP 6789 - monitors | ||
| + | * TCP 6800-7300 - OSDs: | ||
| + | - One for talking to clients and monitors. | ||
| + | - One for sending data to other OSDs (replication, backfill and recovery). | ||
| + | - One for heartbeating. | ||
| + | * TCP 7480 - CEPH Object Gateway | ||
| + | * The MDS also uses a port above 6800. | ||
| ===== Prepare ===== | ===== Prepare ===== | ||
| Line 41: | Line 61: | ||
| </code> | </code> | ||
| + | ===== restart ceph services ===== | ||
| + | <code bash> | ||
| + | systemctl stop ceph\*.service ceph\*.target | ||
| + | systemctl start ceph.target | ||
| + | </code> | ||
| ===== create pool ===== | ===== create pool ===== | ||
| Line 63: | Line 88: | ||
| </code> | </code> | ||
| - | ===== Ceph RADOS Block Devices (RBD) ===== | ||
| - | |||
| - | CEPH provides only a pools of object. To use it for VMs block devices additional layer (RBD) is needed. | ||
| - | It can be created manually or during CEPH pool creation (option ''Add as Storage'') | ||
| - | |||
| - | ===== Ceph FS ===== | ||
| - | It is implementation of POSIX compliant FS top of CEPH POOL. | ||
| - | It requires one pool for data (block data) and to keep filesystem information (metadata). | ||
| - | Performance strictly depends on metadata pool, so it is recommended to use for backups files. | ||