Linux系统与性能监控内容：

一、Linux System and Performance Monitoring(CPU篇)
二、Linux System and Performance Monitoring(I/O篇)
三、Linux System and Performance Monitoring(Network篇)
四、Linux System and Performance Monitoring(总结篇)

PowerShell GUI ScripBlock Monitor Script

I made a GUI script for monitoring PowerShell scriptblocks:

It will take and Interval in Seconds and it will show the result in a GUI datagrid, refreshed at the set interval
(by re-running the scriptBlock )

首先准备好必须的工具如下：

制作工具：iexpress.exe 和makecab.exe，
签名工具：cert2spc.exe，makecert.exe，signcode.exe

背景：

Policy file changes in Flash Player 9 and Flash Player 10

http://www.adobe.com/devnet/flashplayer/articles/fplayer9_security_03.html

昨天做测试的时候遇到一个问题，做好的SWF在Flash AS3中调试通过，但是发布到html中之后就无法得到数据了。查了一些资料之后找到了解决办法。这里感谢 剑心 提供帮助，以及同事若水三千提供Java代码及日志记录。

1、问题描述

   将flash发布为html格式后，加载页面后，swf无法与服务器进行socket通信。Flash端显示的错误为：
securityErrorHandler信息: [SecurityErrorEvent type="securityError" bubbles=false cancelable=false eventPhase=2 text="Error #2048"]

   在服务器端显示的信息是由客户端尝试进行连接，但是无法接受数据。接受的数据显示为空。

mytop - a top clone for MySQL

About

mytop is a console-based (non-gui) tool for monitoring the threads and overall performance of a MySQL 3.22.x, 3.23.x, and 4.x server. It runs on most Unix systems (including Mac OS X) which have Perl, DBI, and Term::ReadKey installed. And with Term::ANSIColor installed you even get color. If you install Time::HiRes, you'll get good real-time queries/second stats. As of version 0.7, it even runs on Windows (somewhat).

Overview

This tutorial explains how I was able to setup a web server in order to support Java Server Pages (JSP) and Servlets using virtually hosted websites. Although this setup worked for this particular environment, I can make no guarantees that it will work for yours, but it should with some tweaking. I’ll explain later on. I have spent a lot of time gathering several resources in order to get this to work. Many portions of these resources have been deprecated and required a few workarounds. It is my intention that this tutorial will help anyone that has attempted to install such a system without success. If you find any inconsistencies within this tutorial, please notify me at the email address above.

           配置环境：
            OS: RHEL5 with kernel 2.6.18-8.1.1.el5
            httpd-2.2.3-6.el5.i386.rpm
            apache-tomcat-6.0.14.tar.gz
            jdk-6u3-linux-i586.bin
            mod_jk-1.2.23-apache-2.2.x-linux-i686.so
            官方宣称mod_jk-1.2.26-httpd-2.2.6.so支持Apache 2.2.x及2.2.6以后的版本，但经实验，1.2.26的mod_jk在RHEL5中会报错。

Working with mod_jk

By Gal Shachor <shachor@il.ibm.com>

Table of Contents

• What is mod_jk?
• Why mod_jk?
• What does it mean to me?
• Definitions and Terminology
• Obtaining mod_jk
  • mod_jk Binaries
  • Building mod_jk
  • Building mod_jk for NT
  • Building mod_jk for Unix
• Configuring Apache
  • Removing mod_jserv directives
  • Configuring Apache to use mod_jk
  • Assigning URLs to be redirected to Tomcat
• Configuring Tomcat
  • Enabling Tomcat's Apache Auto-Config
  • Configuring Tomcat to use the AJPv13 Protocol
  • Defining Workers
• Example Configuration
• Troubleshooting and F.A.Q's
• Credits