execute command

1. Download Zookeeper http://mirror.bit.edu.cn/apache/zookeeper/After decompression, the directory renamed to Zookeeper1, into the Conf directory, the ZOO_SAMPLE.CFG copy, renamed to Zoo.cfgEdit Zoo_simple.cfgConfiguration Data directory and log

instruction manual 01: Installing Hadoop  Part 1: Installing and configuring virtual machines1. install Linux.(1) Open Vmvirtualbox(2) Control--New virtual machine, enter virtual machine name "marst+ number" type: Linux, version: Other Linux (64-bit)

1. Create a simple MAVEN project with the MAVEN commandRun the following command in CMD:MVN archetype:generate-dgroupid=com.mycompany.app-dartifactid=my-app-dversion=1.0-darchetypeartifactid= Maven-archetype-quickstartYou can create a simple MAVEN

1. Create a simple projectUse this command:MVN archetype:generate-dgroupid=cn.edu.app-dartifactid=simple-dversion=1.0-darchetypeartifactid= Maven-archetype-quickstart(Here a little explanation, Archetype:generate front archetype said we used the

operating system: Ubuntu 14.04 Go install: Download. Save directory:/home/xxxxx/download, file name: go1.4.2.linux-amd64.tar.gz. Extract to target directory, command TAR-ZXVF /home/xxxx (username)/download -C target directory.

Main functions of 1.mavenThe ability to manage a project-dependent jar package allows the project to maintain basic dependencies, eliminate redundant jar packages, and make it very easy to version-upgrade a dependent jar package. These are just the

1. Definition:Encapsulate a request as an object so that you can parameterize the customer with different requests, queue requests or record request logs, and support unrecoverable operations. [Gof design patterns]2. RoleCommand -- interface used to

Diagnosis and repair of a rac vip drift Background The customer's 10 Gb database VIP is down, causing VIP load to another node Event support details 04:29:56. went OFFLINE unexpectedly occurs in the VIP of machine 1 of 378. Check the cause of VIP

First, the zookeeper way of buildingThere are three ways to install zookeeper, stand-alone mode, cluster mode, pseudo-cluster modestand-alone mode : The zookeeper is only run on one server and is suitable for the test environment.pseudo-cluster mode

Install JAVA1 Create normal user Useradd wujianpasswd Wujian prompt for password: "Enter Wujian password" User:wujian group:root passwd:123456789 2 to "Wujian" Assign root permissions vi/etc/sudoers found in file #%wheel all= (All) all remove "#"

1, ~ ~ ~ Burning System This is very simple: System: HTTPS://IMAGES.OFFENSIVE-SECURITY.COM/ARM-IMAGES/KALI-2.1.2-RPI2.IMG.XZ2. The Raspberry Pi default does not fully extend all memory to the SD card. Extended partition Required#df-HL View the

SVN　　SVN:SVN is the abbreviation of subversion, is an open Code version control system, compared to RCS, CVS, it uses the branch management system, its design goal is to replace CVS. Many version controller services on the Internet have migrated

If your computer is a Linux system, so for the installation of Linux VNC service is very convenient, for VNC is a very good remote control tool, so the installation and configuration of Linux VNC service, for netizens useful to this function is very

The author's platform in "do-it-Yourself" is Virtual PC 5.0, which he uses as a development platform, but unfortunately VIRTUALPC was mirosoft after the launch of the 5.2 version, and then played Microsoft's overbearing, Let VPC only support Windows.

1: Reference module "http" (Execute command node app.js "http://www.baidu.com")App.jsvar http = require (' http '), var url = require (' URL '), function spider (U,CB) { http.get (url.parse (U), function (res) { C3/>var d = ' res.on ('

MongoDB 3.0 Security Permission access controlMongoDB 3.0 access control has changed a lot, you need to pay attention to this parameter authenticationmechanisms. To use the 2.6 version, I directly specify the following

As we know, Logrotate is a program that manages the log. As for logrotate how to use, there are a lot of online here is not described. Now talk about Logrotate bugs; First give a file that can execute the logrotate command; Function: Realize

MongoDB default is not authentication, default no account, as long as the service can be connected to the database for a variety of operations,MongoDB believes that the best way to security is in a trusted environment to run it, Ensure that the

First, Linux system installation MYSQL1. Linux installation MySQL service is divided into two installation methods: 1.1 Source Installation:The advantage is that the installation package is relatively small, only more than 10 m, the disadvantage is

1: Download, unzip, freely put in a place, rename (MongoDB), click into the Mogodb folder, new DBS folder2: Open command Tool, Cd/xx/mongodb, enter MongoDB3: Execute at the command line: PWD, and then find the absolute path, for