Before you can configure a Red Hat Storage volume, you must create a trusted storage pool consisting of the storage servers that provide bricks to a volume.
A storage pool is a trusted network of storage servers. When you start the first server, the storage pool consists of that server alone. To add additional storage servers to the storage pool, you can use the probe command from a storage server that is already trusted.
Note
You must not self-probe the first server/localhost. Probing the first server/localhost displays an error message as it is part of the trusted storage pool.
The glusterd service must be running on all storage servers that you want to add to the storage pool. See Chapter 6, Managing the glusterd Service for more information.
To create a trusted storage pool, add servers to the trusted storage pool
- The hostnames used to create the storage pool must be resolvable by DNS.To add a server to the storage pool:
# gluster peer probeserverFor example, to create a trusted storage pool of four servers, add three servers to the storage pool from server1:# gluster peer probe server2 Probe successful # gluster peer probe server3 Probe successful # gluster peer probe server4 Probe successful
- Verify the peer status from all servers using the following command:
# gluster peer status Number of Peers: 3 Hostname: server2 Uuid: 5e987bda-16dd-43c2-835b-08b7d55e94e5 State: Peer in Cluster (Connected) Hostname: server3 Uuid: 1e0ca3aa-9ef7-4f66-8f15-cbc348f29ff7 State: Peer in Cluster (Connected) Hostname: server4 Uuid: 3e0caba-9df7-4f66-8e5d-cbc348f29ff7 State: Peer in Cluster (Connected)