Linux

Test throughput:The test system throughput is not critical, and the most important is the impact before and after the use of DRBD performance. This test uses a m block to the drbd device for comparative testing.#! /Bin/bashResource = r0Test_device =

I. zabbix installation environment The installation and configuration of zabbix is complicated. It is based on lamp or lnmp, but the previously installed lamp architecture may not meet the requirements of zabbix, such as some php extensions,

In a multi-module project, the plug-ins executed in the parent project will be executed on all its sub-modules by default. In most cases, this is reasonable, such as compiler plug-ins, however, sometimes the behavior may not be expected by

The Hadoop job submission process is still a bit complicated, so it may appear a little messy when learning the source code, after reading the article for many times, I decided to record it in the form of an article. I can make it clearer next time,

Upload files in djangoViews. py# Create your views here.# Coding = UTF-8From django. http import HttpResponse, HttpResponseRedirectFrom django. shortcuts import render_to_responseFrom django. template import RequestContextFrom django. views.

Normally (by default), In the AIX system, run the shudown-F command to run the shutdown command. The command will only shut down the AIX and LPAR and will not cut off the power of the server. The first method is to use HMC to execute the shutdown-F

1. Install samba service software in CentOS 6.4 and create a shared directory[Root @ localhost ~] # Yum install samba-client samba-command samba[Root @ localhost ~] # Mkdir/home/samba[Root @ localhost ~] # Chmod o + w/home/samba/-- the Directory

DHCP for CentOS 6.4 system LAN Service Dynamic Host Configuration Protocol (DHCP) is a LAN network Protocol that uses UDP for two purposes: to automatically assign IP addresses to internal network or network service providers, it provides users or

CentOS Apache Server installation and configuration 1. Install the Apache program in three ways:1. Direct Network installation;2. Download the rpm package and upload it to the server for installation;3. Compile and install using the original code;

Nginx supports php ci framework 1. Find the configuration file modification for the CI Library $ Config ['base _ url'] = 'HTTP: // test.example.com ';$ Config ['uri _ Protocol'] = 'path _ info ';2. Find NGINX configuration. Add the following code

As a Linux beginner who tries to stay away from Windows, he has been paying more attention to the simple Ubuntu Server for beginners. The database Server needs to be installed several times after December middle April. To use the latest version, we

I. Preparations First, install JDK 6 or later on each Linux computer and set JAVA_HOME. Then, test whether commands such as java, javac, and jps can be used on the terminal, for details, refer to the configuration process in "Configuring Hadoop on a

I just got started with Hadoop and Linux to record the learning process and bit by bit. I. the user created by the user does not have the permission to modify the/etc/profile file and sudo command: Enter the root user, chmod u + w/etc/sudoers to

1. Install zookeeper in the environment where distributed Hadoop is installed, continue to install zookeeper-3.4.5. $ Wget http: // 124.2020.4.9/download/32878722/41763290/4/gz/165/152/13535668471__152/zookeeper-3.4.5.tar.gz $ Tar-xf zookeeper-3.4

Run cat/etc/issue to view the current system version: Ubuntu 12.04.3 Use uname-ar to view more information: Linux ubuntu-236 3.8.0-29-generic #42 ~ Precise1-Ubuntu SMP Wed Aug 14 16:19:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux  Are you sure you

1. Development Environment: Windows 2008 64bit Java 1.6.0 _ 30 My eclipse 6.5 For environment deployment, see: 2. Hadoop cluster environment: Oracle Linux Enterprise 5.9 Java 1.6.0 _ 18 Hadoop: hadoop 1.2.1 three-node Namenode: 10.1.32.91 Datanode: 1

Download keepalived Http://www.keepalived.org/software/keepalived-1.2.7.tar.gz Decompress and compile Tar xzf keepalived-1.2.7.tar.gz ./Configure -- prefix =/opt/keepalived make & make install Configure keepalived Create the keepalived configuration

When tomcat is started in Linux, the following error occurs: touch: "/usr/local/tomcat6.0/logs/catalina. out" cannot be reached: the file or directory does not exist. Tomcat startup error: [Root @ rhel bin] #./startup. shUsing

When apache is installed in LinuxAccess IP addresses cannot be accessed! If the installation fails, the port 80 of the apache listener is tested.# Netstat-lnt | grep 80Tcp 0 0: 80: * LISTENThe installation is successful! Think of using local telnet

View the Code directly: 162 (;;){163164 for (I = 0; I 165 hash = (hash * 113 + iphp-> addr [I]) % 6271; // segment I of the iphp-> addr [I] for the ip address in the dot-decimal Method166}167168 p = hash % iphp-> rrp. peers-> number;169170 n = p/(8 *