Samba ARMed and Ready - SNIA · Samba ARMed and Ready. Running an Active Directory DC on 2 Watts. ... No license costs ... Samba4 DNS server ISC ...

Storage Developer Conference 2009 © 2009 Kai Blin. All rights reserved.

Samba ARMed and Ready

Running an Active Directory DC on 2 Watts

Storage Developer Conference 2009 © 2009 Kai Blin. All rights reserved.2

Overview

IntroductionHardware

Beagle BoardAlternatives

SoftwareUbuntu LinuxSamba

Performance

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About Myself

Computational biology grad studentProtein design

Wine Developer since 2005AuthenticationNetworking

Samba Team member since 2007ID mapping / winbindEmbedded Samba

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ARM Architecture

32bit RISC architectureLow-power, low-costWidely used in consumer electronics

Smartphones/PDAsHandheld gaming consolesRouters / NAS boxes


Why Bother?

Low power consumptionKeeps the power bill down

Fan-less and QuietOffice or home use

Low unit costActive Directory server for < €150/$200No license costs

Mobile

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Hardware

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Hardware Used

Beagle BoardPowered USB hubUSB ethernet controller

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Beagle Board

Budget-friendlyEasy to useAlways-onGreen ITLight-weightExtensible via USB

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Beagle Board

8cm x 8cm (3”x3”)128/256 MB RAM500 mA / 5 VSD/MMC/SDIO slotSerial portNo ethernet

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Beagle Peripherals

Powered USB hubSupplies power to Beagle boardProvides additional USB ports

USB Ethernet controllerUSB2.0 interface (480 Mbit/s)Provides 10/100 Mbit/s EthernetFast enough for SOHO use

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Alternatives

Sheeva PlugFaster processor, 512 MB RAMGigabit ethernet onboard3 A / 5 V

Gumstix OveroSimilar to Beagle BoardExpansion card provides WiFi250 mA / 4 V

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Software

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Software Used

LinuxUbuntu 9.04 “Jaunty Jackalope”

SambaSamba4

DNS serverISC Bind

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Ubuntu “Jaunty Jackalope”

General Linux distributionThousands of software packagesWide range of applications

Supports ARM out of the boxNo need to compile packages yourself

No official Beagleboard kernel (yet)Community kernels available


Ubuntu Setup

Bootstrap on PCrootstock script sets up root filesystemPartition and format SD cardCopy kernel and filesystem to SD card

Boot beagleConfigure networkingUpdate system

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rootstock: https://launchpad.net/project-rootstock


Alternative Distributions

ÅngströmSpecial embedded distributionDesigned for handhelds and NAS boxesRecommended by Texas Instruments

AndroidSpecial embedded distributionDesigned for mobile phones

And many others...

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Samba

Opening Windows to a wider world for 17 yearsSMB/CIFS/SMB2 file servicesCurrent: 3.4.1, released 2009-09-01Providing NT4-style domain controllerMember server in Active Directory domains


Samba4

Active Directory Domain Controller supportAlpha 8 released June 19th 2009Active Directory components usableFile / print services need work

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Samba4 Setup

Compile sources (tarball, git)Call ./setup/provision

Sets up databasesCreates related config files

Set up DNSZone file created by provision

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DNS

Different per distributionUbuntu: Copy over files to /etc/bind/

Problem: bind memory usageAlternatives

dnsmasqOwn implementation


Samba4 Demo

Join Win2k3 memberJoin Samba 3 memberCreate user via MMCEnumerate users on Samba 3 member

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Samba “Franky”

Samba 3: File / print servicesTried and trueGrown code

Samba 4: AD domain controllerClean designFocus on new technology

Combine to get production-ready AD DC“Best of”Code name: Franky

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Samba “Franky” Setup

Grab sources from git://git.samba.org/samba.gitCompile Samba 3 with --enable-developer=yes

Merged Samba 3 / Samba 4 buildpdb_ads glue code

Provision Samba 4 as describedAs domain controller“server services = ldap, cldap, kdc”

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Smba “Franky” Setup (cont.)

Set up Samba 3Different smb.conf file!As domain controller“passdb backend = pdb_ads”

Setup DNS as described

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Performance Data

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Power Consumption

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System Idle (W) Load (W)

AMD Athlon64 3000+ 75 105

Intel Core2 Quad 109 180

Mac Mini G4 20 40

ThinkPad R52 27 50

Beagleboard 4 7

ShevaPlug 6 9


Test (in ~ cycles per minute)

Win2003 Server(Virtual Machine)

Samba4(Virtual Machine)

Samba4(Beagleboard)

kinit - kdestroy 510 1430 100

join - leave 70 90 10

User add - delete 90 110 12

Group add - del 90 160 22

LDAP search indexed 70 120 40

LDAP search wildcard 200 340 100

LDAP searchnot indexed 220 360 100

Benchmark Data

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Conclusions

Suitable for small setupsSlow operations not done often

Affordable Active Directory setupSome optimization might help


Possible Use Cases

“Mobile Workgroup” serversHome office set-top boxCouple with OpenChange for email applianceReplicating DC for branch offices...


Future Work

Optimize for resource savingFacilitate DNS setupWeb configuration frontend


Thank You

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Samba Team blog http://news.samba.org/developers/

Kai's tech blog http://kblin.blogspot.com/

Kai's Beagle page http://kblin.org/projects/home_server

Samba Embedded wiki page http://wiki.samba.org/index.php/Samba_Embedded

http://news.samba.org/developers/

http://kblin.blogspot.com/

http://kblin.org/projects/home_server

http://wiki.samba.org/index.php/Samba_Embedded

Samba ARMed and Ready - SNIA · Samba ARMed and Ready. Running an Active Directory DC on 2 Watts. ... No license costs ... Samba4 DNS server ISC ...

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