Cloud Applications

I. What is cdh? CDHisCloudera '100% opensourceHadoopdistribution, builtspecificallytomeetenterprisedemans is an open source distributed storage system. ii. what software and functions does cdh4 contain? First, hbase, hadoop, zookeeper, these are

Here, we use iptables as a firewall, which is completely powerless in the face of attacks of a certain scale. if you encounter such attacks, based on the scale and characteristics, targeted Selection of hardware firewalls and anti-denial-of-service

Environment: Hardware: IBMX336 server software: CentOS5.5 + iptables-1.3.5 a configuration NetWork: intranet: Eth0: 192.168.0.253/24 Internet: Eth1: 112.95.145.157/24Eth0: vi/etc/sysconfig/network-scripts/ifcfg-eth0 Add: BOOTPR environment: Hardware:

In Linux, gedit encountered errors and solutions. Today, vimgdb was installed with various errors. Alas, especially this error, so I searched for it. remember, you cannot make the same mistake in the future ~ Www.2cto. comgedit all kinds of errors

How to remotely execute the GUI program in Linux has been checking for memory leaks today. by dumping the memory information, a GB binfile is generated. if the file is downloaded locally, it takes about two hours, for convenience, run MAT

Configuring Samba server 1 on Debian introduces that if a certain unit and their desktop computer must use the M $ Windows platform, they may inevitably need Windows server products, for example, WindowsNTServer or Windows2000Serv... Configuring

Shell function-based usage tries to find all the configuration file content in each program directory in a loop function www.2cto.com #. the parameter is the name of the file to be processed and the function to be processed whilefun () # arg1file $1,

In Vim, the file recovery operation may not be performed using Vim in Linux many times, but some people do not know that Vim still has the file recovery function after an abnormal power failure. (Vim, you can also understand Vi. Vi on many machines

Common Linux commands (2) -- permission management command 1. command name: chmodwww.2cto.com execution permission: all users function description: change the file or directory permission syntax: chmod [{ugo} {+-} {rwx}] [file or directory] [mod...

Linux/shell command & mdash; view and modify the system time zone command: www.2cto. comdate-R // query the current system time and default time zone cp/usr/share/zoneinfo/Asia/Shanghai/etc/localtime // change to the time zone of Shanghai (also Zone

Shell command to read data and output data [plain] www.2cto. comshell scripts read data in several ways: 1. keyboard Input. default value: 2. read from file 3. the echo function is passed through pipeline commands: \ c: No line feed \ f: paper feed \

Xshell connection to ubuntu via ssh solution 1. Xshell client sets www.2cto.com to modify KeepAlive Time 2. server side modify/etc/ssh/sshd_config file, find ClientAliveInterval0 and ClientAliveCountMax3 and annotate... Xshell connection to ubuntu

The source Command in linux is the built-in command of bashshell, which comes from CShell. Another method of writing the www.2cto. comsource command is the dot symbol, which is used in the same way as source and comes from BourneShell. The source

After reading "write the operating system by yourself", try to build the Linux environment and read "write the operating system by yourself" and then try again. Because I don't want to use windows as the development platform, I have built a Linux

Introduction to cut commands in AIX and use cut to cut columns or fields from standard input or text files. command format: cut [options] file1file2options: www.2cto.com-clist: specify the number of cut characters-ffield: specify the number of cut

A little Linux every day-hard disk knowledge today, disk interfaces are mainly divided into two types: IDE (IntegratedDriveElectronics), SCSI (SmallComputerSystemInterface ). They each have some differentiation or evolution, so the technical terms

Recently, Erlang + MongoDB has been used in the company's webGame project. there is no way to learn about the project. To learn this, you must have an environment at least. Today, we will record it by setting up the development environment, and we

The find command has several options for searching files based on your system's timestamp. These timestamps include the last modification time of the mtime file content. the time when the atime file is read or accessed, the ctime file state change

Select the start service www.2cto in the "setup" dialog box. comservice: A resident memory process. The service must have a corresponding daemon (daemon process). daemon is divided into two categories: stand_alone: always in the memory, fast

Linuxsysctl optimization script #! /Bin/shwww.2cto. comsysctl-wnet.ipv4.netfilter.ip_conntrack_tcp_timeout_established600sysctl-wnet.ipv4.netfilter.ip_conntrack_max1310720sysctl-w Linux sysctl optimization script #! /Bin/sh www.2cto.com sysctl-w net.