Server Administration

Server Administration

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Optimizing Servers and Processes for Speed with ionice, nice, ulimit

To prepare for several upcoming articles on AskApache that are focused on optimizing Servers and Sites from a server admin level, here is an article to introduce the main tools that we will be using. These tools are used to optimize CPU time for each process using nice and renice, and other tools like ionice are used to optimize the Disk IO, or Disk speed / Disk traffic for each process. Then you can make sure your mysqld and httpd processes are always fast and prioritized.

· CPU  ·  RSS | 1:41 AM

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Advanced WordPress wp-config.php Tweaks

The bottom line for this article is that I want to make WordPress as fast, secure, and easy to install, run, and manage because I am using it more and more for client production sites, I will work for days in order to solve an issue so that I never have to spend time on that issue again. Time is money in this industry and that is ultimately (time) what there is to gain by tweaking WordPress.

Note: I spent no time on readability, this is primarily a read the code and figure it out article.. This is for advanced users looking for a reference or discussion and for those of you looking to advance. Feedback would be great if you make it that far..

· config  ·  RSS | 3:23 AM

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mod_rewrite Fix for Caching Updated Files

Web Developers sometimes use file.ext?v=004 as a version control system to force visitors to use updated files. This is terrible. Instead link to apache-003.css and set it to be cached forever. When you change the file you just change the links to apache-004.css. That eliminates millions of bandwidth and resource robbing If-Modified-Since requests. You only need Apache with mod_rewrite, and 1-10 minutes!

· rewritecond  ·  RSS | 9:20 AM

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PHP and AJAX shell console

Ever wanted to execute commands on your server through php? Now you can. I’m calling this file (see below) shell.php and it allows you to run commands on your web server with the same permissions that your php executable has.

· ajax  ·  RSS | 9:01 PM

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Chmod, Umask, Stat, Fileperms, and File Permissions

Unix file permissions are one of the more difficult subjects to grasp.. Well, ok maybe “grasp” isn’t the word.. Master is the right word.. Unix file permissions is a hard topic to fully master, mainly I think because there aren’t many instances when a computer user encounters them. I’ve done a lot of research on it the past couple weeks… and now here’s everything I’ve learned so far.. cuz you guys AskApache Regs Rock!

· apache  ·  RSS | 6:16 AM

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SEO Secrets of AskApache Part 2

This is part II of the Advanced SEO used on AskApache.com Series and describes how to control which urls are indexed by Search Engines and how to move them higher up in Search Results.

· pagerank  ·  RSS | 5:44 PM

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Mod_Rewrite Variables Cheatsheet

We’ve figured out what mod_rewrite variables look like, a cheatsheet of the actual value.

· rewrite  ·  RSS | 1:05 AM

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Pimp out your FeedBurner Count

I’ve had a lot of people ask about the FeedBurner FeedCount image on AskApache. Specifically how to set it up with custom messages and different colors each page view… It is pretty sweet..

· FeedBurner  ·  RSS | 4:50 AM

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Faster Form Submission and Processing with fsockopen

Part II: Example illustrating how to speed up GET/POST form submissions. Uses fsockopen to initiate a server-side background request to process the submitted data, so that the result page of the form is displayed to the client lightningly quick.

· Form  ·  RSS | 11:18 PM

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Faster POST and GET Form Submissions

Just a very brief look at speeding up form submission by delegating the processing and bandwidth to your server, not your client.

· http  ·  RSS | 10:21 PM

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SetEnvIf and SetEnvIfNoCase Examples

SetEnv, SetEnvIf, and SetEnvIfNoCase directives conditionally set environment variables accessible by scripts and apache based on HTTP Headers, Variables, and Request information.

· Examples  ·  RSS | 1:36 PM

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SPF Records on DreamHost

Here are the steps that I take to get an SPF Record going on DreamHost

v=spf1 mx ip4:64.111.100.0/24 ip4:66.33.201.0/24 ip4:66.33.216.0/24 ip4:208.97.1 32.0/24 ip4:208.97.187.0/24 ip4:208.113.200.0/24 ip4:208.113.244.0/24 ip4:64.18.0.0/20 ip4:74.125.148.0/22 include:aspmx.googlemail.com include:_spf.google.com ~all

· SPF  ·  RSS | 7:47 PM

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