Author: Luca

PS. 轉載請註明出處並連結！

以前要偵測系統流量大多是使用 MRTG，不過功能太少、管理不易，推薦使用 Cacti 與擁有強大圖形化功能的 RRDTool 搭配，可以創造出極漂亮的監測圖表，讓管理者一目了然並輕鬆掌握眾多設備狀況，官網也有很多熱心網友提供已作好的 templates 下載，只要上傳套用即可擁有美觀詳細的圖表。

曾經在 FreeBSD 上裝過 Cacti，這次嘗試裝在 Windows，為了避免忘記還是將步驟記錄下來。

參考文章：
• Cacti 中文研究站 – 安裝 Cacti 在Windows
• The Cacti Manual by BSOD2600 – Installing Under Windows

Continue reading “Cacti on Windows Server 2003 安裝記錄”

趁著調整系統設定之時，順便更新 PHP 的版本到 5.2.1，這次的更新主要在穩定度和安全性上面做改進，ChangeLog 裡有提到 “FastCGI speed optimized build of PHP for Windows made available for downloading”，而更新之後執行速度確實快了些，可以從控制台的速度偵測得知。

幾個主要安全性加強及修正：

Security Enhancements and Fixes in PHP 5.2.1:

● Fixed possible safe_mode & open_basedir bypasses inside the session extension.
● Prevent search engines from indexing the phpinfo() page.
● Fixed a number of input processing bugs inside the filter extension.
● Fixed unserialize() abuse on 64 bit systems with certain input strings.
● Fixed possible overflows and stack corruptions in the session extension.
● Fixed an underflow inside the internal sapi_header_op() function.
● Fixed allocation bugs caused by attempts to allocate negative values in some code paths.
● Fixed possible stack overflows inside zip, imap & sqlite extensions.
● Fixed several possible buffer overflows inside the stream filters.
● Fixed non-validated resource destruction inside the shmop extension.
● Fixed a possible overflow in the str_replace() function.
● Fixed possible clobbering of super-globals in several code paths.
● Fixed a possible information disclosure inside the wddx extension.
● Fixed a possible string format vulnerability in *print() functions on 64 bit systems.
● Fixed a possible buffer overflow inside mail() and ibase_{delete,add,modify}_user() functions.
● Fixed a string format vulnerability inside the odbc_result_all() function.
● Memory limit is now enabled by default.
● Added internal heap protection.
● Extended filter extension support for $_SERVER in CGI and apache2 SAPIs.

The key improvements of PHP 5.2.1 include:

● Several performance improvements in the engine, streams API and some Windows specific optimizations.
● PDO_MySQL now uses buffered queries by default and emulates prepared statements to bypass limitations of MySQL’s prepared statement API.
● Many improvements and enhancements to the filter and zip extensions.
● Memory limit is now always enabled, this includes Windows builds, with a default limit of 128 megabytes.
● Added several performance optimizations using faster Win32 APIs (this change means that PHP no longer supports Windows 98).
● FastCGI speed optimized build of PHP for Windows made available for downloading.
● Over 180 bug fixes.

有滿多是與 Windows 系統相關的效能改善。

標題拉了一大串，自己也搞不懂在講什麼… @@” 反正看圖便知，不然連去 Google 台灣首頁試了就曉得，

昨天搜尋的時候還沒有，應該是今天凌晨用好的，還算不錯的功能，也是用 Ajax 實現的吧～

不過去 Google 各個服務試了一下，目前好像只有 Google 台灣有這個功能，還真稀奇～

關於 FastCGI 的原理可以找 Google 大神。由於目前 Server 是跑 CGI 模式，而且硬體配備是舊電腦淘汰下來的，非常陽春，一旦 php 頁面一多，可以明顯感覺它是拚了老命在撐，最近實在受不了了，查詢一下，在 IIS 上面大部份都是用 Robust and High Performance PHP with IIS: Using FastCGI 的安裝方式，依樣畫葫蘆的結果是…失敗 =.=”，會出現「“Server Error, unable to connect to fastcgi server”」的訊息，或者是直接不給連，真是不甘心啊～

再次向 Google 求助後，終於找到這篇：Installing PHP with the FastCGI technical preview，心想說給 M$ 一次機會好了，結果裝完之後，明顯感覺…好很多，速度飛快不說，安裝步驟還非常簡單，一次就搞定啦～

記錄一下自己 IIS 6 的安裝步驟（php 已先安裝完成且能夠正常運行）：
Continue reading “PHP with FastCGI on IIS 6.0 啟用安裝記錄”