Cloud Applications

1 Preface I have tested the stress of apache, lighttpd, and nginx web servers over the past few days. Apache runs in apache module and lighttpd and nginx runs in fastcgi mode. The basic test result is that apache is slow to reflect, and the

I. parse the Linux application software installation package. Generally, there are four installation packages for Linux application software: 1)tarpackage, such as software-1.2.3-1.tar.gz. It is packaged using tar, a packaging tool for UNIX systems.

PHPWarning: PHPStartup: Unabletoloaddynamiclibrary & amp; #39; E:/AppServ \ php5 \ ext \ php_exif.dll & amp; #39; solution: enable exif in Windows, in php. in ini, php_mbstring.dll must be in php_exif. PHP Warning: PHP Startup: Unable to load

When will the cloning technology be used! Generally, in the production environment, most of my rootvg is mirror. if the ML upgrade fails or some operation is incorrect, it will take me to restore the rootvg, whether it's using tape mksysb recovery

Restrictions on the maximum number of concurrent socket connections in Linux 1. modify the number of files that can be opened by a user process on the Linux platform, regardless of the client program or the server program, during high-concurrency

In linux, there are only two methods for replacing keywords with multiple files: The Mahuinan method, the Sumly method, and the 30 t method: 1. Mahuinan method: you can use the sed command to replace strings in multiple files in batches. Sed-I &

The USB flash drive automatically installs ubuntuyuntop12.041 to format the USB flash drive mkfs. vfat/dev/sdb42 create the startup file umount/dev/sdb4syslinux/dev/sdb43 copy all the files in the image to the USB flash drive root directory

LinuxMintXfce secure-delete (secure-delete) 1. the background of the problem is that the system does not actually erase the real data. The resource can be used only when it is marked as deleted. Www.2cto.com can be restored as long as the actual

Discuss the implementation principle of & gt;/dev/null2 & gt; & amp; 1 in shell commands. first, standard input, standard output, and standard error: standard input is the location where the program can read its input. By default, the process reads

After a thrilling upgrade of gentoo installation and usage for nearly one day (fortunately, the system has not been suspended and it feels faster ), finally, I want to calm down and write down the installation, configuration, and upgrade of gentoo

In Linux, executing commands or scripts on a remote host using SSH non-interactive remote command execution scripts can help us quickly complete some tasks. For example, you can query specific keywords in the log files on each node in the cluster

It is also convenient to keep the ssh connection to the server or sshtunnel. you only need to add two parameters to the/etc/ssh/ssh_config file. TCPKeepAliveyes # keep the connection to www.2cto. comServerAliveInterval300 # send a packet to the

1. differences between RHEL and CentOS in your eyes: CentOSisanEnterprise-Example 1. differences between RHEL and Centos in your eyes Original article on the Centos official website: CentOS is an Enterprise-class Linux Distribution derived from

If you do not know the basic knowledge about IPTABLES, we recommend that you first check it out. configure a filter table firewall. (1) view the settings of IPTABLES on the local machine [root @ tp ~] # Iptables-L-nChainINPUT (policyACCEPT)

This document describes the configuration process. 1. The core idea of configuring a dynamic DNS server is to run multiple binds on the DNS server. each BIND provides resolution for users from different regions, therefore, each BIND should have

Tcpdump is a package capture program that can be run in TomatoDualWAN environment. for details, google or tcpdump -- helpa. capture all data packets that communicate with 192.168.1.3 and display them in command line B. capture all data packets that

The command parameter for saving tcpdump packets to a file is-wxxx. cap capture eth1 package tcpdump-ieth1-w/tmp/xxx. cap catch 192.168.1.123 package tcpdump-ieth1host192.168.1.123-w/tmp/xxx. cap catch 192.168.1.123 port 80 package

Debian Linux has powerful network functions, and the network configuration files used are different from those of other Linux distributions. 1. the basic network command 1.1ifconfigifconfig is used to display network interface information in the

In early May, Google's reliability testing engineer and Debian developer JimmyKaplowitz announced that Google will not only add Debian6.0 and 7.0 images to the GCE (GoogleComputeEngine, it also uses Debian Linux as its default server image.

Install CentOS6.5 on VMWare. Some problems may occur when the system installs vmware-tools. the following solutions are provided: 1. log on to the system, switch to the root account 2. configure the network minimal version and do not start the