Linux

In Red Hat Enterprise Linux 5.0 server, if NFS fails, you can check the problem from the following aspects. 1.1 troubleshooting ideas 1) whether the NFS client and server load is too high, and whether the network between the server and the client

RHEL5 is added on the basis of RHEL4. The system is also perfect, and RHEL5 has been applied to many people. Therefore, RHEL5 is required to be more powerful in configuration, the service configuration mainly involves the RHEL5 DNS configuration, so

This document describes how to manage the network performance of a Linux system and how to use route, netstat, and tcpdump. When configuring the network, you must specify the path through which the packet is received for the machine. In Linux, a

Nagios fetion first needs to activate China Mobile's fetion business. Currently, Apsara SMS is free of charge. You need to add the mobile phone that receives the text message and the mobile phone that sends the mail as a friend. The following is a

Common operations are performed on monitor1, but the data on monitor2 must be updated at any time. However, when the interval is large, it is irrelevant that the script requires local backup and remote backup, at the same time, some data updated by

Recently, I have been studying the ZABBIX network monitoring software and found that the function is still good, that is, the mature Zabbix Chinese forum is basically not available. So I have read the English user manual and studied it. I personally

Vmstat is short for Virtual Meomory Statistics Virtual memory Statistics. It monitors Virtual memory, processes, and CPU activity of the operating system. He makes statistics on the overall situation of the system. The disadvantage is that he cannot

Squid developers regularly release source code. Each release version has a version number, for example, 2.5.STABLE4. The third part of the version number starts with STABLE or DEVEL short-term development version. Maybe you can guess that the DEVEL

Have you ever metRedHat5.0 install Arm-Linux crossoverCompilerIs there always a problem of installation errors? The author of this article has also encountered this situation, but after some exploration, he has successfully solved the above problems.

ForLinuxFor beginners of the operating system, install and useJprofiler6Analyzing the server application status is not a simple task. Don't worry. As long as you read the next article, installing jprofiler6 won't be a difficult task. 1. When an

Nginx is a high-performance Web and reverse proxy server with many excellent features: In the case of high connection concurrency, Nginx is a good alternative to Apache servers: Nginx is one of the software platforms that are frequently chosen by

PS: When I configured php-fpm some time ago, I accidentally found that there were two ways to manage the process. Similar to Apache, the number of processes can be divided into dynamic and static Based on the settings. Php-fpm currently has two main

Recently, a large number of servers have been borrowed, so I want to promote virtualization technology. Virtual Machine Software selects Virtualbox, which is relatively simple. However, I was told that the software could not be installed, but I had

Background:In a recent project test, each business needs to run an independent environment without Redundant Servers at hand. It is decided to create several virtual machines on an existing HP dlw.g6 server to meet the needs of the project

In this article, we will focus on some methods to help you use in your environment and ensure the security of the IIS7 server and its applications. 1. Step 1: Make sure that your Web server is a reinforced OS. If you are using the Windows Server 2008

VLAN is a new data exchange technology that logically divides LAN devices into network segments to implement virtual working groups. The 802.1Q protocol is also known as the "VirtualBridgedLocalAreaNetworks" (Virtual bridging LAN) protocol, which

TCP/IP SYN Attack SYN Flooding Attack is an Attack that uses the imperfect three-way handshake protocol of TCP/IP to maliciously send a large number of packets containing only the SYN handshake sequence. This attack method may cause the attacked

In Linux, we can adjust the kernel network parameters in the/proc/sys/net/ipv4/directory according to different requirements. By reasonably configuring the kernel network parameters, this improves network security and system stability. Because there

For the tcp ip protocol, we do not strictly regulate its hardware or other designs. It is widely used and its conceptual application is relatively vague. Now we will introduce the address query in its linux system. To allow the tcp ip protocol to

There are some backdoors in many protocol applications. For example, the Linux ICMP backdoor we will introduce today. Next, let's take a detailed look at the specific content about the 137-byte remote ICMP backdoor in Linux. Use the Ping Control