What does master mean in Linux? What are its important functions?

In the Linux system, master refers to the master node or master server, which plays a very important role and provides very important functions. So what does master mean in Linux system? What are its important functions? Let’s introduce it.

The Master of Linux refers to the master node or master server in the Linux system.

In a distributed system, the Master node refers to the core node responsible for coordinating and supervising the operation of the entire system. In a Linux cluster, the Master node plays the role of the central controller of the cluster. Its main responsibilities include task allocation, monitoring cluster status, handling faults, and ensuring the normal operation of the cluster. The importance of the Master node lies in its ability to ensure the coordination and consistency of the entire cluster. It improves the efficiency and reliability of the system by centrally managing communication and resource allocation between nodes. In addition, the Master node is also responsible for scheduling tasks to ensure load balancing among various nodes, thereby maximizing the performance and stability of the system. Therefore, the Master node plays a vital role in the distributed system

In a Linux cluster, the Master node usually has the following important functions:

The role of the Master node in the cluster is to distribute tasks to other nodes. It allocates tasks to the most suitable nodes based on the load and performance characteristics of each node to ensure that the entire cluster operates efficiently.

The Master node plays a key role in data management in the cluster. It is responsible for the distribution, backup and redundant storage of data to ensure data security and reliability. In addition, the Master node also monitors and manages the storage space in the cluster to ensure data integrity. In this way, the Master node can effectively manage the data in the cluster and improve the availability and stability of the data.

3. Monitoring and scheduling: The Master node is responsible for monitoring the status and performance of each node in the cluster, collecting node operating data and indicators, and conducting analysis and scheduling. This allows nodes to be adjusted and tasks redistributed as needed.

The Master node has a self-healing function, which can quickly detect the failure or failure of nodes in the cluster and take corresponding measures, such as failover or task migration, to ensure the stable operation of the entire cluster.

The Master node plays a key role in security management in the cluster. It can set access permissions, restrict access and operations to the cluster, and effectively prevent unauthorized access and abuse.

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