presented by lonnye bower fardin khan chris orona apache web server
TRANSCRIPT
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Presented byLonnye Bower
Fardin KhanChris Orona
APACHE WEB SERVER
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Introduction and Installation of Apache
Server
Note: Images courtesy of apache.org
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Introduction to Apache
• Apache is a web server package that works under Linux as well as under other operating systems
• The name Apache comes from the concept of extensive patching of existing code
• The primary advantage of Apache is that it is generally free or available at modest costs
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Installing Apache
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Installing Apache From a CD-ROM
• If your CD-ROM has Apache and you want to use RPM to install the package, issue this command– rpm –i apache_1_3_4.rpm(substitute the full name of the Apache
package)
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Installing Apache From a Download
• Place the downloaded files in a location that will be dedicated to the Apache files, such as /usr/apache
• Uncompress the files using either gzip or tar and compress
• You must edit the configuration file– You can find more information about
this in the Readme file
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Installing Apache… (con’t)
• Uncomment all the Modules in the configuration file except– cern_meta_module– msql_auth_module– dld_module
• Choose either db_auth_module or dbm_auth_module; they should not be used together
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Installing Apache… (con’t)
• Create the configuration file for Linux by issuing the command– Configure
• Compile Apache by issuing the make command– The most common error message
encountered concerns the socket.h library, most likely because TCP/IP is not installed
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Installing Apache… (con’t)
• The result of the compilation will be a binary file called httpd
• Copy this file into /bin or /usr/bin, where it will reside in the path
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Setting Up the Website
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Setting Up the Website
• Create the home directory for the website, we will use /usr/www/ganesan
• Create 3 subdirectories under the site directory– conf– htdocs– logs
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Setting Up the Website (con’t)
• You will find a subdirectory called conf under the directory where you installed Apache– Copy 3 files (srm.conf-didst, access.conf-dist, http.conf-dist) from this directory into /usr/www/ganesan/conf
– If you cannot find the 3 files, use the find command to find them
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Setting Up the Website (con’t)
• Rename the 3 files you just copied to drop the “-dist” portion of the name
• Edit the httpd.conf file to specify – the port number on which your web
server responds– the user running the httpd daemon,
etc…• Specify the server name
– ServerName ganesan.com
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Setting Up the Website (con’t)
• Add a line that specifies the root directory for your website– DocumentRoot /usr/www/ganesan/htdocs
• Edit the srm.conf file to set up the web home directory and any special internal command usage
• Edit the access.conf file to set a basic set of access permissions
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Setting Up the Website (con’t)
• In the htdocs directory create an HTML file for the server to read when it starts– This can be any HTML file– The filename should be default.html
• Start the httpd daemon– httpd –f /usr/www/ganesan/conf
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Setting Up the Website (con’t)
• Test the web server by starting a browser and specify the URL http://127.0.0.1/
• If the system is working properly, you will see a screen with a list of files in the htdocs directory
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Server Configuration
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Server Configuration
• Make sure the ServerType directive is set to “standalone”
• Check the Port device to make sure it is set to the TCP/IP port to which your Apache server listens
• Set the User directive to either the user ID (UID) or the user name used for all web visitors
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Server Configuration (con’t)
• Set the Group directive to either the group ID (GID) or the group name assigned to all web users
• Modify the ServerAdmin directive to include the e-mail address of the administrator
• Set the ServerRoot directive to the absolute path to the directory where all Apache resource and configuration files are stored– /usr/apache/conf or /etc/httpd
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Server Configuration (con’t)
• Set the ServerName directive to the fully qualified domain name of your server
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Starting and Stopping Apache
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Starting and Stopping Apache
• If you are running Apache as a standalone server, you need to start and stop Apache manually– Start with httpd –d rootdir –f configs
– To stop Apache use ps to detect the httpd daemon’s PID and use the kill command to terminate the process
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A Note on Starting and Stopping Apache
• Later versions of Apache include a script that does the start and stop tasks for you
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Virtual Hosting
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Virtual Hosts
• A virtual host is a web server that resides on one domain but acts as if it was on another. For example, suppose you control ganesan.com and cis454.com. Instead of setting up 2 servers, you can set up a single machine that serves both domains.
• Virtual hosting saves on machinery and allows for a lot of flexibility in setting up web servers
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Setting Up Virtual Hosting
• If your network uses a name server for DNS, modify it so that the domain name points to your web server for each domain you’ll host
• Use the ifconfig command to set up the IP address for each domain on your server– ifconfig eth0:1 xxx.xxx.xxx.xxx
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Setting Up Virtual Hosting (con’t)
• Add the route to the network configuration using the route command– route add –host xxx.xxx.xxx.xxx dev eth0:1
• Edit the Apache httpd.conf file to set up virtual hosting– <VirtualHost www.cis454.com>DocumentRoot /usr/www/cis454/htdocsTransferLog /usr/www/cis454/logs/accessErrorLog /usr/www/cis454/logs/errors</VirtualHost>
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Setting Up Virtual Hosting (con’t)
• The previous step defines the virtual host for cis454.com and specifies its DocumentRoot, since each virtual host will have different web directories
• If more than one virtual host is defined, the entries are to be repeated for each
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A Final Note
• There are many more configuration options possible with Apache, but they are usually used for commercial sites that require authentication or special handling characteristics
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Key Terms
• Apache• conf• Server Name• Virtual Hosting• ifconfig
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Apache Resources
• For more information on Apache go to– www.apache.org – www.apacheweek.com – dev.apache.org
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Thank You and Good Luck!If you have any questions regarding Apache and/or any part of this presentation, please feel free to email:
Lonnye Bower at [email protected] Orona at corona@calstatela.
eduFardin Khan at [email protected]