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Comprehensive Overview of Amanda Backup Management System at Purdue University

This document provides a thorough overview of the Amanda backup management system, detailing its operation as a management tool for standard backup programs rather than a backup program itself. It includes key components such as system dumps, scheduling, tape management, and client configuration. Instructions for installation, client setup, and maintenance processes are also outlined. Additionally, resources for assistance, such as documentation and mailing lists, are provided to facilitate understanding and implementation.

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Comprehensive Overview of Amanda Backup Management System at Purdue University

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  1. Working With AMANDA John R. Jackson Purdue University Computing Center jrj@purdue.edu

  2. Overview • Not a backup program itself • Manages other standard backup programs • System dump • GNU tar • smbtar • Optimized schedule • Dump cycle • Tape cycle • Estimated image sizes

  3. Overview(continued) tape driver planner driver taper driver dumper client holdingdisk sendsize sendbackup

  4. Getting Help • Release notes and documentation • “The book chapter” • http://www.backupcentral.com/amanda.html • Home page/FAQ • www.amanda.org • Mailing lists • amanda-users@amanda.org • amanda-hackers@amanda.org

  5. Before You Begin • Optional software • GNU tar, readline, awk • SAMBA • Perl • gnuplot • Amanda user/group • Access through a firewall • Installation location • Tape server capacity • I/O and network • CPU • Holding disk

  6. Installation • Don’t use pre-built binaries (e.g. RPM) • ftp.amanda.org • cvs.amanda.sourceforge.net • Standard GNU build sequence: • make distclean • ## apply patches • ./configure … • make • make install ## as root • patch-system

  7. What’s A Configuration? • Logical grouping of clients • Alternate set of options • Client/config rule

  8. Typical Directory Structure • --with-configdir ($prefix/etc/amanda) • Owned by the AMANDA user/group • amanda.conf • logfile • infofile • indexdir • disklist • tapelist • Changer config file(s) • amdump.<nn>

  9. amanda.conf(general parameters) • org • mailto • dumpcycle • tapecycle/runspercycle/runtapes • tapedev (no rewind!!!) • tpchanger • labelstr • netusage

  10. amanda.conf(holdingdisk) • directory • chunksize • use

  11. amanda.conf(dumptype) • program • compress • none • client fast • client best • server fast • server best • dumpcycle • record • index

  12. amanda.conf(tapetype) • FAQ at www.amanda.org • cd tape-src ; make tapetype • length • filemark

  13. Tape Changers • AMANDA uses an external program • Test the external program first, then amtape • chg-manual • chg-multi • chg-scsi

  14. Label the Tapes • All AMANDA tapes must be pre-labeled • amlabel [-f] <config> <label> [slot <slot>] • Run as the AMANDA user

  15. Setting Up a Client • disklist • hostname (FQDN) • “disk” • dumptype • inetd.conf on the client (HUP) • amcheck –cl <config> • /tmp/amanda/*.debug

  16. Operation • amcheck • amdump • amstatus • amverify

  17. Restoring • amrestore • Retrieve images from tape or holding disk • Tape “catalogue” • amrecover • Command line (ftp-like) interface to index files • Emergency dd if=$TAPE bs=32k count=1 dd if=$TAPE bs=32k skip=1 [ | gunzip ] | restore

  18. Maintenance • Read the E-mail report from each run • Failures vs. “strange” results • Timeouts • amcleanup • amflush • amadmin • Adding/removing clients and disks • Adding/removing tapes

  19. Future • Security framework • Strategy API • Filter API • Dumper API • Taper rewrite

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