Linux System Administration Recipes A Problem-Solution Approach

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CHAPTER 1 ■ SAVING YOURSELF EFFORTIn Ubuntu, the directory is /var/lib/mediawiki.Now you can set up the second install (you can repeat this as often as you like, for as many wikisas you like). Here, /main/wiki is the directory where you’ve put your first install (what http://server.example.com/wiki points to, which in the previous example would be /var/lib/mediawiki), and/new/wiki is where you want your second (or third or...) install, which is where http://server.example.com/wiki2 points to.cd /new/wikiln -s /main/wiki/* .rm images config LocalSettings.phpcp -r /main/wiki/images .cp -r /main/wiki/config .This sets up most of the files to simply use the already installed ones but copies across the imagesand config directories, which must be independent in order to be able to set different configurationoptions for the different wikis and to keep the images separate. (If your wikis are closely linked, youmight prefer to have a shared image directory, but bear in mind that this will mean you can’t use genericnames, such as logo.jpg, for any files that are not the same for all the wikis sharing the image directory.)LocalSettings.php is generated when you install, so you don’t need to copy that.Set the ownership on the files and directories (including /new/wiki itself) to be correct for your webserver:chown -R wwwdata /new/wiki■ Note The www-data username is correct for a default Debian install but may not be correct for your setup.If you have permissions problems, check the ownership on /main/wiki (or any other working web directory) withls -ld /main/wiki and substitute for www-data as appropriate.Next you need to reconfigure Apache to deliver this new directory. Copy the existing MediaWikiconfig file:sudo cp /etc/mediawiki/apache.conf /etc/mediawiki/apache-wiki2.confln -s /etc/mediawiki/apache-wiki2.conf /etc/apache2/conf.d/mediawiki2.confEdit the /etc/mediawiki/apache-wiki2.conf file to change all occurrences of /main/wiki to/new/wiki, and then restart Apache (/etc/init.d/apache2 force-reload).Now you can do the final wiki setup. Go to http://server.example.com/wiki2/, and click“setup wiki.”The first page (as shown in Figure 1-1) asks for a wiki name (for example, MySAWiki), e-mailcontact, and license settings and then requires you to set an admin password. There’s a memcachedoption; for a small wiki, there’s no need to use caching.4Download at WoweBook.Com
CHAPTER 1 ■ SAVING YOURSELF EFFORTFigure 1-1. The database setup page for your first wikiThe second page sets up various e-mail features, which you can enable or disable as you prefer.The third page (see Figure 1-2) is the important one for our purposes, because it handlesdatabase setup.5Download at WoweBook.Com
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Page 7 and 8: Contents■About the Author .......
Page 9 and 10: ■ CONTENTS3-7. Writing a Nagios P
Page 11 and 12: ■ CONTENTS■Chapter 8: Using the
Page 13 and 14: ■ CONTENTSAbout the Author■Juli
Page 15 and 16: ■ CONTENTSAcknowledgmentsMany tha
Page 17 and 18: ■ CONTENTSIntroductionThis book i
Page 19 and 20: ■ INTRODUCTIONDownloading the Cod
Page 21 and 22: C H A P T E R 1■ ■ ■Saving Yo
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CHAPTER 2 ■ CENTRALIZING YOUR NET
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C H A P T E R 3■ ■ ■Monitorin
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CHAPTER 3 ■ MONITORING AND UPDATI
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C H A P T E R 4■ ■ ■Taking Ba
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CHAPTER 4 ■ TAKING BACKUPS AND MA
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C H A P T E R 5■ ■ ■Working w
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CHAPTER 5 ■ WORKING WITH FILESYST
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C H A P T E R 6■ ■ ■Securing
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CHAPTER 6 ■ SECURING YOUR SYSTEMS
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CHAPTER 7 ■ WORKING WITH APACHEOn
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CHAPTER 7 ■ WORKING WITH APACHE4.
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CHAPTER 7 ■ WORKING WITH APACHEAl
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C H A P T E R 8■ ■ ■Making Be
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CHAPTER 8 ■ USING THE COMMAND LIN
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CHAPTER 9 ■ WORKING WITH TEXT IN
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C H A P T E R 10■ ■ ■Things G
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CHAPTER 10 ■ THINGS GO IN, THINGS
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C H A P T E R 11■ ■ ■Tracking
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CHAPTER 11 ■ TRACKING DOWN BUGSTh
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CHAPTER 11 ■ TRACKING DOWN BUGS01
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CHAPTER 11 ■ TRACKING DOWN BUGS#
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C H A P T E R 12■ ■ ■Managing
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CHAPTER 12 ■ MANAGING TIME AND PE
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APPENDIX■ ■ ■Perl TipsSee rec
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APPENDIX ■ PERL TIPS• Date::Par
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APPENDIX ■ PERL TIPSPerl Syntax N
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■ ■ ■Index■Symbols$CDPATH,
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■ INDEXenscript option (printing)
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■ INDEX■NNagiosadding hosts to,
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■ INDEXsyslogcentralized logging
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