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- Let me go, the Linux system CPU is 100% full!
- Yesterday afternoon, I suddenly received an email alert from the operation and maintenance department, which showed that the CPU utilization rate of the data platform server was as high as 98.94%. In recent times, this utilization rate has continued to be above 70%. At first glance, it seems that the hardware resources have reached a bottleneck and need to be expanded. But after thinking about it carefully, I found that our business system is not a highly concurrent or CPU-intensive application. This utilization rate is too exaggerated, and the hardware bottleneck cannot be reached so quickly. There must be a problem with the business code logic somewhere. 2. Troubleshooting ideas 2.1 Locate the high-load process pid. First log in to the server and use the top command to confirm the specific situation of the server, and then analyze and judge based on the specific situation. By observing loadaverage, and load
- LINUX . vim 1257 2024-02-13 23:27:12
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- Linux kernel module
- The Linux kernel uses modular technology. This design can keep the system kernel minimal while ensuring the scalability and maintainability of the kernel. The modular design allows us to load modules into the kernel only when needed to achieve dynamic Kernel tuning. Now let me introduce to you how to operate the kernel. Kernel module storage location The naming method of Linux kernel module files is usually as follows. The kernel modules of the Centos6.3 system are centrally stored in the /lib/modules/uname-r/ directory. View loaded system modules The lsmod command is used to display the current Linux kernel module status. Without any parameters, it will display all currently loaded kernel modules. The three columns of information output are
- LINUX . vim 1005 2024-02-13 22:21:23
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- Thoroughly understand Linux hard links and soft links
- Hard links and soft links are two common link file types under Linux systems. If you want to learn more about the concept of hard links and soft links, I will take you through the research. By reading this article, you will fully understand the differences and characteristics of hard links and soft links. First of all, under the Linux system, there are two types of link files, one is a hard link (HardLink) and the other is a soft link, also called a symbolic link (SymbolicLink). Hard links can be created using the ln command under Linux systems: ln [parameters] [source file or directory] [destination file or directory] In the file system, each file will have an index node (InodeIndex). This index node used to mark
- LINUX . vim 1028 2024-02-13 20:20:02
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- Make Linux server a good helper for Go developers
- Installing a Linux system is still a relatively complicated matter for many people, let alone using a Linux system to develop Go. But now, with the convenience provided by major cloud server manufacturers, you can easily own a Linux server and just log in using a remote terminal. For those newbies who are not familiar with Linux systems and Go development, here are some simple settings and steps to help you use Linux systems to develop Go programs more smoothly. I still remember when I was in college, installing a Linux system was still a relatively complicated matter. You need to download the image first, then burn it to a CD, and then install it with the CD. The biggest headache is that the quality of the optical drive in my laptop is not very good, so is there something wrong?
- LINUX . vim 1232 2024-02-13 19:51:11
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- Install smbclient on CentOS and install vim on CentOS
- In the CentOS operating system, smbclient and vim are two very commonly used tools. smbclient is a client tool used to communicate with SMB/CIFS servers, and vim is a powerful text editor. This article will introduce in detail how to Install smbclient and vim on CentOS and provide some related usage tips. 1. Open a terminal and log in as root user. 2. Run the following command to update the system package list: ```yumupdate3. Run the following command to install smbclient: yuminstallsmbclient4. The system will prompt you to confirm the installation, press the y key and press the Enter key to
- LINUX . vim 1254 2024-02-13 16:30:10
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- The Linux terminal command line can also be used to view images
- There are a large number of GUI applications available for viewing images in Linux. To be honest, I haven't used any command line application that displays pictures in the terminal itself. Luckily I found 2 command line image viewers to display images in the terminal. These applications may be useful for those who want to use a CLI alternative for GUI applications and spend most of their time in Terminal. 1. Display images in the terminal using Viu Viu is a command line application for viewing images from the terminal. It is a free and open source CLI image viewer written in the Rust programming language. Using Viu we can; display popular image types including .jpg, .png, igif and more. in custom size
- LINUX . vim 1790 2024-02-13 15:33:11
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- Use Bash script to write a simple and practical Linux health check tool
- Linux is a powerful and complex operating system that can run on various hardware and environments and provide various functions and services. However, Linux also requires regular health checks to ensure the normal operation and performance of the system. Linux has many built-in commands and tools that can be used to check the status and parameters of the system, but these commands and tools may need to be entered and executed manually, which is cumbersome and time-consuming. This article will introduce how to use Bash script to write a simple and practical Linux health check tool, which can check the basic information of the system, resource usage, network connection, etc. with one click. Write script $vimlinuxmi#!/bin/bash#colornotesNC='\
- LINUX . vim 1096 2024-02-13 13:18:35
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- Learn Vim8 simply and improve Linux code editing efficiency!
- As a Linux developer, do you often feel that you are not efficient when editing code, or do you hope to have a better code editor to improve work efficiency? If so, then you need to learn Vim8! Vim8 is a very powerful code editor and it is widely regarded as one of the best editors on Linux systems. Now, let us learn how to use Vim8 to improve our code editing efficiency. 1. First, install all necessary libraries including Git. For a Debian-like Linux distribution, such as Ubuntu, the command is as follows: sudoapt-getinstalllibncurses5-devlibgnome2-d
- LINUX . vim 1011 2024-02-13 10:39:02
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- A Linux command artifact running on Windows-Cmder
- 1. Introduction Many engineers are accustomed to using Linux to issue some commands, and it is simply unbearable to use Windows cmd again. To run Linux commands on Windows, the currently popular methods include: GunWin32, Cygwin, WSL (BashonWindows), GitBash, and PowerShell. WSL: Cygwin: GitBash: PowerShell or simply install a virtual machine and install ubuntu inside it. Today, I will introduce to the students a god-level command line tool for Windows - Cmder. 2. CmderCmder is a command line tool for Windows.
- LINUX . vim 1130 2024-02-13 09:57:03
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- Backup is that simple: teach you how to use Linux rsync command easily
- In daily use of modern computers, data backup is particularly important. For Linux users, the rsync command is a common method for backing up and synchronizing files. It enables fast and efficient data synchronization between different systems or local folders. Solution background: Data synchronization is required between server A and server B (either 1-to-1 or many-to-many, here is a simple 1-to-1 example). This solution is often used for remote disaster recovery. There are roughly two types of synchronization solutions based on application scenarios, scheduled synchronization and real-time synchronization. Scheduled synchronization has the characteristics of fixed synchronization time, poor real-time performance, and low resource consumption; real-time synchronization has the characteristics of strong real-time performance, intensive synchronization, and high resource consumption. 1. Scheduled synchronization 1. Install software: yuminstallr
- LINUX . vim 1327 2024-02-13 09:33:02
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- How to disable the ping command in Linux system?
- In Linux systems, the ping command is usually used to test network connections and detect network delays. However, sometimes we find that in some Linux systems, the ping command prompts that the permissions are insufficient or even unavailable. Why does this happen? What exactly causes the ping command to be disabled? How to solve this problem? In this article, we will explore the reasons why the ping command is disabled and how to fix it. 1. Kernel parameter settings 1. Allow ping to set temporary echo0>/proc/sys/net/ipv4/icmp_echo_ignore_all permanent echonet.ipv4.icmp_echo_ignore_all=
- LINUX . vim 806 2024-02-13 09:27:12
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- Learn these Linux 'automations' to easily complete tasks
- When the web website of the Linux system is in operation, we often need to maintain the website, such as checking the remaining resources and responding, log segmentation, data sorting, performing specific tasks in specific states, etc., all of which require Linux to be automatically executed. certain tasks. This blog post introduces how to perform common Linux automation tasks. "Automation" of Linux Implementing "automation" has the following benefits: saving manpower, one script is enough. Automatic execution at night can avoid the peak traffic period of the website and does not affect the efficiency of the website during the day. It is accurate and will not go wrong if the settings are perfect. Of course, the most important thing is peace of mind, as you don’t have to type certain commands frequently. Booting up and booting up should be a very common need for us. I
- LINUX . vim 1028 2024-02-13 08:24:21
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- CentOS package installation and passwordless installation tips
- In Linux systems, CentOS is a very popular distribution. It is based on Red Hat Enterprise Linux (RHEL) and simplifies it. In CentOS, package management is an important part of system management. This article will introduce the basic method of CentOS package installation. , and a passwordless installation method that allows you to install packages without entering a password. CentOS packages are installed in CentOS. Use the yum or dnf command to install the packages. The following are the basic steps: 1. Open the terminal. 2. Use the following command to update the package list: ```sqlsudoyumupdate``` or sudodnfupdate
- LINUX . vim 1257 2024-02-12 16:09:04
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- Is the system stuck when installing Tongxin uos? **
- **Foreword** I have been paying attention to the development of various operating systems. Recently, a user asked about the lag problem of the Tongxin uos system. As a domestic operating system, Tongxin uos has attracted the attention of many users. Installing Tongxin uos Will the uos system get stuck? Next, we will give you detailed answers. **Text** We need to make it clear: any operating system may experience lags during installation and use, which depends on a variety of factors, such as hardware configuration, system optimization, software installation, etc. For the UOS uos system We cannot simply give a yes or no answer to the question of whether it is stuck. Judging from user feedback and actual usage, the Tongxin uos system can provide a smooth operating experience on most hardware configurations.
- LINUX . vim 1078 2024-02-11 17:50:08
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- Install PacVim and PacMan on CentOS: Improve your Linux editing and package management experience
- CentOS is a popular Linux distribution that is widely used in server environments. The default package manager yum may not meet all needs. Sometimes, you may need a more powerful text editor, such as PacVim, or more flexible package management. Fortunately, you can install these tools on CentOS, such as PacMan, and in this article we will show you how to install it. Install PacVimPacVim is an enhanced version of the Vim text editor that provides more functions and plug-ins. To install PacVim on CentOS, you need to install Vim first. You can use the yum command to install: ````sudoyuminstallvim installation is complete
- LINUX . vim 1456 2024-02-11 16:30:09
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