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Knowledge introduction SMART is a disk self analysis and detection technology, which has been basically popularized as early as the late 1990s Each hard disk (including IDE and SCSI) will record its own parameters when running These parameters include model, capacity, temperature, density, sector, seek time, transmission, bit error rate, etc A ...

✨ Learn, grow and love life with warmth ✨      preface Today, let's talk about the content related to linux commands. In the ranking of the top 500 operating systems of supercomputers in the world, the proportion of Linux has been maintained at more than 85% for a long time in recent ten years, and has been showi ...

Redis Cluster provides a method to run redis installation, in which data   Automatically partition between multiple redis nodes. Redis Cluster also provides a certain degree of availability during partitioning, which is actually the ability to continue operation when some nodes fail or fail to communicate. However, if a major failure occur ...

The three assemblers that are executed before the Linux system starts are mentioned above. The head.s program actually enters the Linux source code written in C by jumping out of the main function stack and into the main function execution. Previous article can be jumped here Linux Source Parsing - From Startup to main Function Based on the Li ...

preface 1. This article mainly refers to Blogs: Click to enter , it integrates the pseudo distributed environment construction and some pit stepping matters.2. There are three node machines built in the environment: pc1, pc2 and pc3. Among them, pc1 is the management machine, and the three node machines all use the user Sillyhumans. If t ...

catalogue one, Kernel compilation and installation 1. Download relevant data package 2. Decompression 3. Merge patches 4. Kernel configuration Modify grub startup profile Reference link   1, Kernel compilation and installation 1. Download relevant data package The current environment is Ubuntu 18.04. The ROS melody environme ...

This article is an original article of Joshua 317. Please note: reprinted from Joshua 317 blog One Linux command a day (35): ps command - Joshua 317 blog 1, Introduction The ps command in Linux system is used to display the process status of the current system and list the currently running processes in the system. ps command is the most bas ...

Linux thread scheduling strategy and priority experiment What is thread scheduling policy? The Linux kernel has three scheduling algorithms: 1,SCHED_OTHER time-sharing scheduling strategy, 2,SCHED_FIFO real-time scheduling strategy, first come first serve 3,SCHED_RR, real-time scheduling strategy, time slice rotation Where, SCHED_FIFO and S ...

1, Openssh features 1. Purpose of sshd service effect: You can open the secure shell in the remote host through the network Secure shell > > > SSH ## client Secure shell daemon > > > sshd ## server 2. Installation package openssh-server 3. Master profile /etc/ssh/sshd_conf 4. Default port port 22 5. Client commands ...

For online services, there are often bug s in a certain logic of xxx service, which need to be repaired urgently. For stateless services, you can repair them and restart them directly. However, for stateful services, restart means loss of memory state and disconnection of long connections. For example, if the Warcraft server needs to be resta ...