ganglia监控hadoop2.0配置方法前提：hadoop2.0集群已安装ganglia监控工具第一步：Hadoop用户登录集群每一个节点，修改文件：vi /opt/hadoop-2.0.0-cdh4.5.0/etc/hadoop/hadoop-metrics2.properties将文件内容修改为如下内容：（注释或者删除默认配置）*.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31 *.sink.ganglia.period=10 *.sink.ganglia.slope=jvm.metr.. Read More
简介cx_Oracle是用python连接oracle的驱动模块，参考文章：[cx_Oracle文档](http://cx-oracle.sourceforge.net/html/index.html)[木匣子](http://www.cnblogs.com/hzhida/archive/2012/08/13/2636735.html)下载安装包cx_Oracle-5.1.2-10g-py26-1.x86_64.rpmoracle-instantclient12.1-basic-12.1.0.1.0-1.x86_64.rpmoracle-instantclient12.1-devel-12.1 Read More
#test> testllls Read More
--java模拟实现browser，主要代码： 1 package socket; 2 3 import java.io.*; 4 import java.net.*; 5 6 public class MyHttpClient { 7 public static void main(String[] args) throws Exception{ 8 InetAddress inet = InetAddress.getByName("localhost"); 9 System.out.println(inet.getHostAddress());1... Read More