Shulou(Shulou.com)05/31 Report--

What is the basic concept of big data's high availability cluster? in view of this question, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

Basic concepts of high availability cluster

1. Brain fissure: there is no coordination between the left and the right, and the right side thinks that the left side is dead to compete for resources, but in fact the left side is not dead, resulting in a scramble for resources.

2. STONITH: shot the other node in the head. To prevent brain fissure, kill the left node and shut down (through the power switch) before scrambling for resources.

3. NAS (Network Attached Storage): network attached storage (NFS, ISCSI, etc.)

4. DAS (Directly Attached Storage): directly attached storage (SCSI, SAS, etc.)

5. Fencing: it is divided into node-level isolation (headshot) and resource-level isolation (forbidding access to storage, etc.). To solve the resource contention (brain fissure) is mainly to solve the access to storage resources (such as writing a file at the same time), otherwise the data will be messed up.

The answer to the question about what is the basic concept of big data's high availability cluster is shared here. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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