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- Nginx cluster load balancer
- Experimental environment: 10.10.204.62LoadBalancing10.10.204.63NginxWebserver10.10.204.64NginxWebserver10.10.204.65FileStorage1.FileStorage server installation yum-yinstallnfs-utils2. Configure NFS and create a shared directory #mkdir-p/Data/webapp#vim/etc/ exports/ Data/webapp10.10.204.0/24(rw,sync,no_subtree_check,no_r
- Linux 884 2024-07-27 09:19:52
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- How does SYN use the TCP protocol to launch attacks?
- SYN attack is a common method used by hackers and is one of the methods of DDoS. SYN attacks exploit TCP protocol flaws by sending a large number of semi-connection requests, consuming CPU and memory resources. In addition to affecting hosts, SYN attacks can also harm network systems such as routers and firewalls. In fact, SYN attacks do not matter what system the target is, as long as these systems open TCP services, they can be implemented. To understand the basic principle of this attack, we have to start with the process of establishing a TCP connection: As we all know, TCP is based on connections, that is to say: in order to transmit TCP data between the server and the client, you must first Establish a virtual link, that is, a TCP connection. The standard process of establishing a TCP connection is as follows: Section 1
- Linux 641 2024-07-27 08:24:02
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- How to Access Your Linux (WSL) Files in Windows 10 and Windows 11
- Windows 10's May 2019 Update introduced an easy, safe, and officially supported way to access and work with your Linux files from within File Explorer and other applications. Here's how to get at your Windows Subsystem for Linux (WSL)
- Windows Series 869 2024-07-27 01:46:03
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- Elaborate on using Splunk to monitor Kubernetes performance
- Deployment Architecture The following figure shows the deployment architecture of this solution, which mainly includes: using Heapster to collect K8s performance data, including CPU, Memory, Network, FileSystem, etc. Using Heapster's StatsdSink to send data to Splunk's MetricsStore, using Splunk's search commands and dashboards Function Monitoring performance data Preparation There are two main things to prepare in the early stage: compile the latest Heapster image and upload it to a public Docker image warehouse, for example, dockerhub configures MetricsStore and the corresponding network input (Network) in Splunk
- Linux 593 2024-07-26 17:31:50
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- Safe ways to change passwords: multiple ways to avoid interaction
- Regularly changing the password of the system is a very important security common sense. Generally, we use commands such as passwduser to change user passwords. However, this will enter the interactive mode. Although using scripts, batch changes cannot be easily made unless using To implement software like expect, do you need to install a separate software package to change the password? No, we may have many other ways to avoid interaction. Let’s write down the specific implementation method in detail: The first one: echo "123456"|passwd--stdinroot Advantages: Convenient and fast Disadvantages: If the command you enter can be captured by others through history or other methods
- Linux 837 2024-07-26 16:52:25
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- How to turn off notifications in win10 system
- How to turn off notifications in win10 system? Sometimes some notification messages will appear when using win10 system, but many users do not want to receive these notifications, so how to turn off notifications? For this reason, the editor has compiled a detailed tutorial to make it easy through tutorials Turn off the notification message, and interested friends can read and learn more. Method to turn off notifications in win10 system 1. Click the start menu in the taskbar in the lower left corner, find the settings function and open it. 2. In the Windows settings page that opens, find the system option and click it. 3. In the opened page, click the notification and operation options on the left. 4. On the page you enter, click [Get notifications from apps and other senders] under notifications on the right to turn off notifications.
- Windows Series 486 2024-07-26 15:58:13
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- The Best Adobe Alternatives for Your Next Creative Project
- Dying to escape Adobe’s subscription model? You don’t need to pay hundreds of dollars a year to use top-quality creative software anymore. Try these alternatives and buy outright (or create for free) instead. Best Photoshop Alternativ
- Windows Series 629 2024-07-26 13:46:03
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- How to Move Windows to Another Drive: This Is the Easiest Method
- Whether you are upgrading from HDD to SSD or installing a bigger capacity drive, here’s the easiest way to move your existing Windows operating system installation and all the data to another drive. Important Things to Consider Before You Begin D
- Windows Series 245 2024-07-26 12:53:21
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- How to build a PHP website on Windows Server 2008 R2 Enterprise? PHPWAMP Green Integrated Environment Tutorial
- Server version: WindowsServer2008R2Enterprise usually builds a PHP website. It can be built on a Linux server or a Windows server. It mainly depends on your personal needs. Tomorrow we will demonstrate using the PHPWAMP red integrated environment to build a PHP website on a Windows server. This PHPWAMP red integrated environment also belongs to the WAMP suite. Do you know what WAMP is? Apache+Mysql+PHP under Windows is called WAMP. Although there are many WAMP packages, such as wampserver, apmserv, xampp, etc., this WAMP environment
- Linux 620 2024-07-26 11:58:03
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- Linux system iptables firewall service installation and activation and clearing rules tutorial
- Iptables is a firewall component service under Linux. Compared with the Windows firewall, it has more powerful functions. Let's take a look at the common operations of iptables in the Linux system to determine whether the Linux system has enabled the iptables service. The Linux firewall starts up. Tutorial on starting the Linux firewall at boot and eliminating firewall rules. 1. Check whether iptables is installed 1. The firewall iptables under Linux is usually a system-integrated component. To check whether it is installed, you can query it through rpm-qa. 2. If the component is not installed, you can install it through yuminstalliptables (
- Linux 560 2024-07-25 17:44:03
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- How to handle HTTP errors when uploading resources in WordPress
- Briefly describe the construction of an internal video learning website within the company. After comparison, WordPress was chosen to build the site. However, various problems were encountered while uploading the video, so we will record the process. Cause troubleshooting 1. When uploading an mp4 file of more than ten megabytes, the upload progress reaches 100%, and the media prompts an http error. 2. At first, it was suspected that the upload size of PHP and Nginx was limited. However, looking at the PHP and Nginx configurations, 1000Mvim/etc/nginx/conf.d/default.conflocation/{root/data/web;indexindex.phpindex.htmlindex.htm is configured
- Linux 162 2024-07-25 13:39:11
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- Modify and crack MariaDB database root password
- There are many ways to change the mysql password. Here are 2 ways to introduce one: #/usr/local/mysql/bin/mysqladmin-uroot-ppassword "New-password" Enterpassword: [Enter the original password] // Enter and press Enter to change the password. Becomes New-password solution two #mysql-uroot-p//Press Enter to log in to the mysql system Enterpassword: [Enter the original password] MariaDB[(none)]>usemysql;//Enter the mysql database MariaDB[(none)
- Linux 689 2024-07-25 09:09:51
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- Learn more about processes: View child processes, thread information, and common statuses
- Q&Aps view all child processes? What are the meanings of each array of pstree-ppidps-eLf? PID: processid process idPPID: parentprocessid parent process idLWP: Indicates that this is a thread; either the main thread (process) or a thread NLWP: numoflightweightprocess The number of lightweight processes, that is, the number of threads TIME: the total CPU time occupied CCPU utilization, Expressed as an integer. Check the CPU utilization rate/video memory/priority and other information of all threads under the process? top-H-p25120 Check which CPU the thread is running on? ps-eoruser,pid,ppi
- Linux 231 2024-07-25 08:00:14
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- Intelligent method of obtaining local IP in Netty project to improve code portability
- 1: Scenario description When working on Netty-related projects, when checking the disk space in Linux, we often need to bind the IP and port number of the local machine. If we write it in the configuration file, Linux programming can obtain the IP, so that every time we change laptops The configuration file needs to be changed when running or deploying to other environments. This will be more troublesome. If we make it smart to obtain the local IP, the portability of our code will be enhanced. Next, I will introduce a way to intelligently obtain the LAN IP and intranet IP of our machine under Windows and Linux. Linux programming to obtain the IP. Please give me some advice if there is anything wrong. 2: The solution and code are first posted on the tool class for obtaining the IP/**
- Linux 572 2024-07-25 07:46:53
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- Linux system partition formatting and mounting disk
- When installing centos on the server, usually the Linux system partition defaults to 3 partitions, with a maximum of 4 primary partitions. Others can be mounted according to your own needs. /Root partition, usually about 10-100G (depending on the total disk size) /boot system operation partition (100-500MB is enough) /swap virtual memory temporary partition (usually 2 times the memory) If there is any remaining disk Keep it and mount it later. After installing the system, start formatting the remaining partitions and mounting them. 1. First check the unassigned partition names. Some are different. Mine are /dev/sda and /dev/sdb. sda is the system partition and sdb is the storage data partition. #fdisk-lDisk/
- Linux 414 2024-07-24 16:34:53
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