Method for implementing openstack high availability based on SAN (Storage Area Networking) storage shared volume

Abstract

The invention proposes a method for implementing openstack high availability based on a SAN (Storage Area Networking) storage shared volume, which is mainly directed to a SAN storage scenario withouta shared file system and a storage driver lacking a docked cinder. The method comprises the following steps: firstly creating a shared storage volume on the SAN storage device, and mapping the volumeto multiple servers at the same time; then, on the servers, building a lvm cluster with the shared volume device, creating a volume group and a logical volume on the lvm cluster, and setting up a cluster file system on the logical volume. The volume group created above is called to the cloud hard disk service cinder, and the cluster file system is used by the mirroring service glance and the computing service nova. The method can effectively solve the single point problem, and provide the possibility of evacuation of the virtual machine when the nodes are down by adopting a file system in which multiple nodes can share data, without increasing additional data forwarding transmission such as NFS and ISCSI, and storing the loss of data forwarding and protocol conversion.

Description

technical field [0001] The invention relates to a high availability method, in particular to a method for realizing openstack high availability based on SAN storage shared volumes. Background technique [0002] Cloud computing uses virtualization technology to integrate computing, storage, network and other resources in the data center to form a unified resource pool, and then allocate these resources to different departments or people for use. Using cloud computing technology, the unified management of computer room resources can be realized, and resources can be allocated on demand. openstack is an open source cloud computing software. Its core components include the mirroring service glance, computing service nova, network service neutron, block storage service cinder, etc. The components related to storage resources include glance, nova and cinder. [0003] At present, commonly used storage includes distributed storage, NAS storage and SAN storage. Among them, the maint...

AI Technical Summary

Problems solved by technology

However, there are still some types of storage devices that do not have corresponding cinder storage drivers. The way to access openstack for these devices is generally to map the storage volume on it to a physical machine, create an lvm volume group, and access openstack through the LVMVolumeDriver driver. However, this method There is a single point of problem. If the mapped physical machine goes down, the cloud hard disks allocated from it cannot be used, and the cinder-volume service of these cloud hard disks is also on this physical machine. Before the downtime machine recovers, the cloud storage cannot be accessed. hard disk operation

In view of the above problems, the use of SAN storage on openstack has difficulties in high availability

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