Linux System Administration Recipes A Problem-Solution Approach

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■ CONTENTS2-3. Setting Up an LDAP Server.................................................................................... 282-3a. OpenSSL ................................................................................................ 292-3b. LDAP Server........................................................................................... 302-4. Finishing the LDAP Setup: Authenticating with Kerberos...................................... 32Setting Up the Database ................................................................................. 33Testing! ........................................................................................................... 34Troubleshooting .............................................................................................. 352-5. Populating the LDAP Database.............................................................................. 352-6. Setting Up the LDAP Client .................................................................................... 38Troubleshooting .............................................................................................. 392-7. Using LDAP............................................................................................................ 40ldapsearch ...................................................................................................... 40ldapadd ........................................................................................................... 41ldapmodify ...................................................................................................... 41ldapdelete ....................................................................................................... 422-8. Setting Up a Slave LDAP Server ............................................................................ 42Troubleshooting .............................................................................................. 452-9. Setting Up Kerberos Replication............................................................................ 47Troubleshooting .............................................................................................. 482-10. Adding a New User to LDAP with a Script ........................................................... 492-11. Modifying and Deleting Using LDAP Scripts........................................................ 52Deleting Entries............................................................................................... 532-12. Querying LDAP with a Script ............................................................................... 552-13. Adding Your Own Fields to LDAP......................................................................... 572-14. Using NFS and automount................................................................................... 592-15. Connecting Macs to a <strong>Linux</strong> NFS Server ............................................................. 602-16. Improving NFS Performance ............................................................................... 60■Chapter 3: Monitoring and Updating ...................................................................633-1. Nagios: Setting Up Centralized Monitoring............................................................ 633-2. Adding Another Host to Nagios ............................................................................. 673-3. Using Templates in Nagios.................................................................................... 673-4. Using Hostgroups and Services in Nagios............................................................. 683-5. Setting Up Nagios Alerts ....................................................................................... 693-6. Defining Nagios Commands .................................................................................. 71viDownload at WoweBook.Com
■ CONTENTS3-7. Writing a Nagios Plug-In........................................................................................ 713-8. Setting Up the NRPE Plug-in for Nagios ................................................................ 733-9. Enabling External Commands in Nagios................................................................ 763-10. Synchronizing Your Root Setup........................................................................... 783-11. Setting Up Puppet................................................................................................ 79Setting Up a Client........................................................................................... 80Setting Up Your Site Manifest ......................................................................... 813-12. Creating Puppet and Resource Dependencies .................................................... 833-13. Puppet: Managing Other Types ........................................................................... 833-14. Setting Up Nodes in Puppet................................................................................. 853-15. Defining Your Puppet Nodes in LDAP .................................................................. 863-16. Puppet: Using Facter and Templates .................................................................. 88Custom Facts .................................................................................................. 90Other Variables................................................................................................ 903-17. Using ClusterSSH ................................................................................................ 91■Chapter 4: Taking Backups and Managing Data..................................................954-1. Calculating Your Network’s Total Disk Size and Current Usage........................... 964-2. Finding Out How Often Your Files Change............................................................. 994-3. Backing Up Your Wiki .......................................................................................... 1004-4. Backing Up MySQL .............................................................................................. 1024-5. Backing Up Kerberos and LDAP .......................................................................... 1034-6. Performing a Rapid Restore with Automated rsync ............................................ 1044-7. Using rsync with SSH Keys ................................................................................. 1084-8. Creating an Off-Site Backup via E-mail............................................................... 1104-9. Using anacron for Laptop Backups ..................................................................... 1124-10. Performing Basic Data Recovery: fsck and dd .................................................. 1134-11. Using Foremost to Retrieve Data....................................................................... 1164-12. Rescuing Data: Autopsy .................................................................................... 1164-13. Securely Wiping Data ........................................................................................ 118■Chapter 5: Working with Filesystems................................................................1195-1. Changing ext2 to ext3 with tune2fs .................................................................... 1195-2. Making Changes to Automatic fsck Checking..................................................... 1205-3. Saving Space on Large Filesystems and Directories .......................................... 1215-4. Working with Disks, UUID, and Labels ................................................................ 121viiDownload at WoweBook.Com
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Page 7: Contents■About the Author .......
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
Page 23 and 24: CHAPTER 1 ■ SAVING YOURSELF EFFOR
Page 41 and 42: C H A P T E R 2■ ■ ■Centraliz
Page 43 and 44: CHAPTER 2 ■ CENTRALIZING YOUR NET
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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 APACHEdi
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CHAPTER 7 ■ WORKING WITH APACHE4.
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CHAPTER 7 ■ WORKING WITH APACHE
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CHAPTER 7 ■ WORKING WITH APACHEAl
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CHAPTER 7 ■ WORKING WITH APACHE
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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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CHAPTER 11 ■ TRACKING DOWN BUGSTh
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CHAPTER 11 ■ TRACKING DOWN BUGSAn
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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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