Wordpress API » Apache

How to remove the AuthType Basic

Wordpress API — Mon, 28 Feb 2011 19:58:37 +0000

http://wordpressapi.com/2011/02/28/remove-authtype-basic/

For putting the web authentication we always use the .htaccess or apache configuration file. For removing the web auth from folder you need put following code in .htaccess file.


#AuthType Basic
#AuthName "By Invitation Only"
#AuthUserFile /etc/httpd/passwd/passwords
#Require user wpapi
#Require valid-user



AuthType None
Require all granted
Satisfy Any

without directory use the following code.

#AuthType Basic
#AuthName “By Invitation Only”
#AuthUserFile /etc/httpd/passwd/passwords
#Require user wpapi
#Require valid-user

AuthType None
Require all granted
Satisfy Any

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How to protect your images directly accessing through server by apache

Wordpress API — Mon, 06 Dec 2010 20:15:38 +0000

http://wordpressapi.com/2010/12/06/protect-images-accessing-server-apache/

To protect your images or media file you should use apache rewrite rules. To protect your images or other files from being linked or used on another website. Due the this issue your images may be used by many sites.

How to protect your images directly accessing through server by apache

The Apache Server’s Mod Rewrite Engine can examine the name of the document requesting a file of a particular type. If the URL of the page requesting the image file is from an allowed domain, display the image. Otherwise, return a broken image.

There are many people who try to use your website images. That will cut your bandwidth so using this code is good idea.

You can use following apache code in apche config file or put following code in your .htaccess file.

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://images.wordpressapi.com/.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://www.wordpressapi.com/files/.*$ [NC]
RewriteRule .*\.jpg$
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://images.wordpressapi.com/.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://www.wordpressapi.com/files/.*$ [NC]
RewriteRule .*\.jpeg$
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://images.wordpressapi.com/.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://www.wordpressapi.com/files/.*$ [NC]
RewriteRule .*\.png$
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://images.wordpressapi.com/.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://www.wordpressapi.com/files/.*$ [NC]
RewriteRule .*\.gif$
RewriteRule .*\.(jpg|jpeg|gif|png|bmp)$ - [F,NC]

Second thing you should do. you should create the dummy index.html file and put in your images folder for so any visitor will not see the directory listing of images.

If you use above code then when other domain try to see or use the your images then they will see the following error message.

it will result in a Forbidden error.
Still if you are having any issue or question then write to me.

How to configure haproxy load balancing on amazon ec2

Wordpress API — Tue, 23 Nov 2010 17:45:35 +0000

http://wordpressapi.com/2010/11/23/configure-haproxy-load-balancing-amazon-ec2/

Many people take amazon EC2 cloud hosting. Amazon does gives the load balancer for application load balancing. But Amazon load balancer is not that much good. Amazon load balancer is not working on hardware or software base. That balancer just sending request to server one by one. Many people confused how to configure load balancer on Amazon EC2.

Here I am going to give you detail instructions about setting up the HaProxy load balancer on Amazon EC2.

What is Haproxy?

HAProxy is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for web sites crawling under very high loads while needing persistence or Layer7 processing. Supporting tens of thousands of connections is clearly realistic with todays hardware. Its mode of operation makes its integration into existing architectures very easy and riskless.

For Haproxy load balancing I recommend to create the micro instance first. Then login to micro instance and install haproxy on that machine. I taken the Centos 5.0 virgin os. Use following command for install the haproxy.

#yum install haproxy

Then Open the haproxy config file.

# vi /etc/haproxy.cfg

For detail configuration you should read the Haproxy config documentation.

http://haproxy.1wt.eu/download/1.3/doc/configuration.txt

Haproxy’s default load balancing style is roundrobin. Which is trusted and good. With this load balancing I am serving around two million pages daily. Means I am handling 6 to 7 million requests per day. I am not having any issues.

I used the three backend server for delivery of my application and one server for serving the static data which is having images and js and css and application files.

Here is my configuration file


global
 maxconn     4096 # Total Max Connections. This is dependent on ulimit
 daemon
 nbproc      4 # Number of processing cores. Dual Dual-core Opteron is 4 cores for example.

#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
 mode        http
 log         global
 option      dontlognull
 option      httpclose
 option      httplog
 option      forwardfor
 option      redispatch
 timeout connect 10000 # default 10 second time out if a backend is not found
 timeout client 300000
 timeout server 300000
 maxconn     60000
 retries     3

#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
#frontend  main *:80
frontend http-in
 bind :80
 acl url_static       path_beg       -i /static /images /javascript /stylesheets
 acl url_static       path_end       -i .jpg .gif .png .css .js
 acl url_stats        path_beg    /haproxy-stats
 use_backend        be_stats    if url_stats

 use_backend static          if url_static
 default_backend             app

#-------------------------------------------------
#back-end statistics section
#----------------------------------------------------------------
backend be_stats
 stats uri /haproxy-stats
#    stats show-node

#---------------------------------------------------------------------
# static backend for serving up images, stylesheets and such
#---------------------------------------------------------------------
backend static
 balance     roundrobin
 server      static 10.211.164.138:80 check
 #server      static 10.211.185.111:80 check

#---------------------------------------------------------------------
# round robin balancing between the various backends
#---------------------------------------------------------------------
backend app
 balance     roundrobin
 server  app1 10.214.284.241:80 check
 server  app2 10.208.168.131:80 check
 server  app3 10.212.158.126:80 check

You can use the above code in haproxy.cfg file. You just need to change the IP address which are listed under backend static and backend app section. You just put your static server(amazon EC2 instance’s internal IP address).

You should use internal IP address of server because that will reduce the bandwidth uses of Amazon EC2 server. Do not use the public IP address for load balance because that will cost you.

Put application database and application files on all the server. Point your domain to your load balancer machine’s Public IP address.

Let say your application is running on following domain.

www.YOURDOMAIN.COM – point to Load balancer macine.

Open your all application and static server’s apache configuration file. put following entry in that file.



DocumentRoot /var/www/html
ServerName www.YOURDOMAIN.COM

# Other directives here

after this just restart the apache server of all servers.

If you are having any issues or questions about setting up the haproxy on amazon EC2 server Please write to me.

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how to install Jmeter on Linux

Wordpress API — Tue, 22 Jun 2010 14:18:55 +0000

http://wordpressapi.com/2010/06/22/how-to-install-jmeter-on-linux/

Jmeter is basically used for load testing of web applications.

JMeter is to first download the latest production release and install it. The release contains all of the files you need to build and run most types of tests, e.g. Web (HTTP/HTTPS), FTP, JDBC, LDAP, Java, and JUnit.

If you want to perform JDBC testing, then you will, of course, need the appropriate JDBC driver from your vendor. JMeter does not come with any JDBC drivers.

If you want to install the jmeter on your linux box you need to follow my steps

1) Goto http://jakarta.apache.org/site/downloads/downloads_jmeter.cgi
2) Download Binary 2.3.4.zip . The zip file name will be “jakarta-jmeter-2.3.4″
3) Paste it in /var/www/html/
4) Unzip “jakarta-jmeter-2.3.4″
5) New folder with name “jakarta-jmeter-2.3.4″ will be created
6) Go to command prompt
7) go to “jakarta-jmeter-2.3.4″ folder (cd /var/www/html/jakarta-jmeter-2.3.4) go to “bin” folder (cd bin)
9) Now you are in bin folder (i.e /var/www/html/jakarta-jmeter-2.3.4/bin/)
10) type the command “sh jmeter”
11) After a short pause, the JMeter GUI should appear.

After this you can use following commands for load testing.

For non-interactive testing, you may choose to run JMeter without the GUI. To do so, use the following command options

-n This specifies JMeter is to run in non-gui mode

-t [name of JMX file that contains the Test Plan].

-l [name of JTL file to log sample results to].

-r Run the test in the servers specified by the JMeter property “remote_hosts”

-R [list of remote servers] Run the test in the specified remote servers

The script also lets you specify the optional firewall/proxy server information:

-H [proxy server hostname or ip address]
-P [proxy server port]

Example : jmeter -n -t my_test.jmx -l log.jtl -H my.proxy.server -P 8000

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How to remove the www from url with rewite rule

Wordpress API — Sun, 07 Mar 2010 04:42:28 +0000

http://wordpressapi.com/2010/03/07/remove-www-url-rewite-rule/

Now these days keeping www in URL is becoming old fashion. How can check many websites for that and the current example is twitter.com

I specially dont like to put www in URL so we can easily remove the www from URL.

Open your apache configuration file. If you are using Linux then open file from following location

# vim /etc/httpd/conf/httpd.conf

put following lines in your virtual directory section.


# remove www from url
RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC]
RewriteRule ^.*$ http://example.com%{REQUEST_URI} [R=301,L]

We can use this rewrite rule in .htaccess file also. But make sure .htaccess is enable through apache server.


# remove the www from URL.
Options +FollowSymlinks
RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC]
RewriteRule ^.*$ http://example.com%{REQUEST_URI} [R=301s,L]

For WordPress websites for seo purpose putting above lines in .htaccess file is really best. That will gives you the really great result in future.

what is cloud hosting – Know In detail

Wordpress API — Wed, 24 Feb 2010 20:06:45 +0000

http://wordpressapi.com/2010/02/24/what-is-cloud-hosting-know-in-detail/

In now day many times we heard about cloud hosting and cloud computing. Recently we heard from Matt (WordPress founder) also. Many web designers are not aware with cloud hosting.

In this article I am going to write about in detail about cloud hosting. We are heard about messaging servers and big web services.

Twitter is the biggest mirco blogging website in the world and they are running like more then 100 mongrel server instances on Nginx server for handling the twitter. But still they are facing lot of traffic issue. May be there are multiple reasons. But still one of that is Rails. How much requests single mongrel instance can handle and if they got billions of hits in single second. What will happen we never no.

Who are in server administration they will defiantly have good idea about these issues.

What is cloud hosting?

Cloud hosting is nothing but multiple virtual machines which are basically does load balancing.

Generally, website hosted on a cloud hosting operates on a clustered servers where online operations are not limited to a single server. By handling security, load balance and hardware resources virtually, the website has access to the processing power of a number of servers that are distributed in real time.

Cloud computing is a way of computing, via the Internet, that broadly shares computer resources instead of having a local personal computer handle specific applications.

I can say Cloud hosting is solution for multiple dedicated servers. Handling multiple dedicated server is really pain. So for high traffic websites choosing the cloud hosting is the best option.

Google, Yahoo, MSN, Facebook many companies are already using the cloud hosting for better performance.

For choosing the cloud hosting there are few good options present in market. Some of few as follows:

1. Amazon

2. gogrid

How to add www to domain name through apache or htaccess

Wordpress API — Thu, 28 Jan 2010 13:38:28 +0000

http://wordpressapi.com/2010/01/28/add-www-domain-apache-htaccess/

Just use following code in apache configuration file or .htaccess file.

If you are using the shared hosting then please go with only .htaccess file.

Just copy paste following code in .htaccess file.

Options +FollowSymlinks

RewriteEngine On

RewriteBase /

RewriteCond %{HTTP_HOST} !^www\.wordpressapi\.com$ [NC]

RewriteRule ^(.*)$ http://www.wordpressapi.com/files/$1 [L,R=301]

How to start Activemq with XML configuration file

Wordpress API — Fri, 11 Dec 2009 03:34:40 +0000

http://wordpressapi.com/2009/12/11/how-to-start-activemq-with-xml-configuration-file/

You can download Aapache activeMQ from following URL;
http://activemq.apache.org/activemq-530-release.html

Choose the your OS(Linux/Windows). After downloading apache-activemq-5.3.0-bin.zip.
Extract the ActiveMQ. Open command prompt and go to activeMQ/bin directory and run the “activemq” command.

ActiveMQ will start without configration.
If you are running ActiveMQ on local machine than you can open the ActiveMQ’s Admin from following URL;
http://0.0.0.0:8161/admin/ (8161 is default port)

If you want to run ActiveMQ with XML file. Use following command
#bin/activemq xbean:file:../config.xml

For more information Please visit the http://activemq.apache.org/

How to install SSL with apache on fedora

Wordpress API — Tue, 10 Nov 2009 13:06:46 +0000

http://wordpressapi.com/2009/11/10/how-to-install-ssl-with-apache-on-fedora/

Just use following commands
[root@localhost siwan]# yum install openssl
[root@localhost siwan]# yum install openssl-devel
[root@localhost siwan]# yum install mod_ssl

This will start apache server.
[root@localhost siwan]# /etc/init.d/httpd restart

How to use hosts file on Mac, Windows and Linux

Wordpress API — Wed, 04 Nov 2009 09:31:08 +0000

http://wordpressapi.com/2009/11/04/how-to-use-hosts-file-on-mac-windows-and-linux/

The hosts file is a computer file used by an operating system to map hostnames to IP addresses.
On many operating systems, the host file content is used preferentially over other methods,
such as the Domain Name System (DNS). Unlike DNS, the hosts file is under the control of the local computer’s administrator

Locate the file “Hosts” on your computer:
Windows
Windows 95/98/Me c:\windows\hosts
Windows NT/2000/XP Pro c:\winnt\system32\drivers\etc\hosts
Windows XP Home c:\windows\system32\drivers\etc\hosts

Linux
/etc/hosts or /etc/host.conf or /etc/nsswitch.conf

Symbian
C:\system\data\hosts

Mac OS
/private/etc/hosts or /etc/hosts

In that file you can edit entry like this

# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost localhost yourlocaldomain.com , example.com
::1 localhost6.localdomain6 localhost6
192.168.2.200 intranet

directory.example.com 71.155.186.91