SAP HANA System Replication and SUSE® Linux Enterprise Server for SAP Applications

8/10/2019 SAP HANA System Replication and SUSE® Linux Enterprise Server for SAP Applications

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SAP HANA System Replication and

SUSE ® Linux Enterprise Server for

SAP ApplicationsOverview

Peter Schinagl

Technical Architect, Global SAP Alliance

[email protected]

!a"ian Herschel SUSE

SAP Senior Architect [email protected]

mailto:[email protected]






#

Agenda

$oncept

%elivery

Prere&uisites and Parameters

'utloo(

Next)Steps



*

HANA in a SUSE ® Linux EnterpriseHigh Availa"ility Extension $luster HAA Sin!le "ox # S$stem %eplication & Scale'(P

resource )ailover

active & active

no*e + no*e

-

A "

-

A "

HAAatabase

HAAmemor$'preloa* A "

S$stem%eplication

HANA PR+primary

HANA PR+secondary



,

'utloo(- HANA in a SUSE Linux EnterpriseHigh Availa"ility Extension $luster HAA -ulti o*e # S$stem %eplication & Scale'O(T

S(S/ is still scopin! an* researchin! this cluster concept.

site + site #

-

A "

-

A "

HAAatabase

HAAmemor$'preloa* A "

S$stem%eplication

HANA PR+primary

HANA PR+syncmem

resource )ailover

active & active



.

SAP HANA SR and SUSE Linux EnterpriseHigh Availa"ility Extension $luster HAA Sin!le "ox

Pacema0er

S$stem %eplication

node + node #

SAP HANAPR+primar$

SAP HANAPR+secon*ar$

S$stemP%+

S$stemP%+



/


Pacema0er

S$stem %eplication

node + node #

SAP HANAPR+primar$


S$stemP%+

S$stemP%+




Pacema0er

S$stem %eplication

node + node #

SAP HANAPR+1primar$2


S$stemP%+

S$stemP%+




irection o) the s$stem replication will onl$ be chan!e* i) theparameter A(TO-AT/3%/G4ST/% is been chan!e* to 5true.6

7e recommen* startin! with the *e)ault8 A(TO-AT/3%/G4ST/%96)alse6

Pacema0er

S$stem %eplication

node + node #


SAP HANAPR+primar$

S$stemP%+

S$stemP%+



!rom $oncept to 3mplementation

SAP HAAPrimar$ SAP HAASecon*ar$

v4P

SAPHana -aster&Slave %esource

4aster Slave

SAPHana5opology :lone %esource

:lone :lone

suse;+ suse;

:luster :ommunication

S$stem %eplication


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7hat is the %elivery8

Pac0a!e SAPHanaSR with two resource a!ents8SAPHana5opology an* SAPHana

SAPHanaS% HA7< 7i=ar*is a technical preview.

Setup 9uideSetup 9uide SAPHanaSR HA7: 7i;ardSAPHanaSR HA7: 7i;ard

an*an*


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SAPHanaSR HA7: 7i;ard

Technical preview inclu*e*in the shippin!.


http://slidepdf.com/reader/full/sap-hana-system-replication-and-suse-linux-enterprise-server-for-sap-applications 12/21+#

SAPHanaSR in HA7:


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$urrent Allo<ed Scenarios

•

Two'no*e clusters

•Scale'up >sin!le'box to sin!le'box? HAA s$stem replication

•"oth no*es are in the same networ0 se!ment >la$er ?

•Pre)erre* site ta0eover active. There is no other SAP HAA

s$stem >li0e A? on the replicatin! no*e that nee*s to be

stoppe* *urin! ta0eover >reuires a**itional testin!?

•"oth SAP HAA instances have the same SAP 4*enti)ier

>S4? an* 4nstance umber


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$urrent Allo<ed Scenarios >:ont.?

•

"oth cluster no*es in'time s$nc >ntp?

•Technical users an* host names resolve* locall$

•"oth ph$sical an* 5virtual6 SAP host names

•istance & Latencies. 4) the cluster no*es are installe* in*i))erent *ata centers or *ata center areas, the environment

must match the reuirements o) the S(S/ Linux /nterprise

Hi!h Availabilit$ /xtension cluster. This speci)icall$ means the

networ0 latencies between the no*es an* the recommen*e*

maximum *istance. Please review our pro*uct *ocumentation)or recommen*ations.


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Parameters for SAP HANA 5opology

Parameter %escriptionS4 SAP i*enti)ier >SL/?

4nstanceumber SAP instance number >;;?


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Parameters for SAP HANA

Parameter %escriptionS4 SAP i*enti)ier >SL/?

4nstanceumber SAP instance number >;;?

P%/F/%3S4T/3TA</OB/% e)ines, i) Secondary shoul* ta0eover, i) primary instance >not no*e?)ails otherwise pre)er local restart o)SAP HAA >true?

A(TO-AT/3%/G4ST/% e)ines i) a )ormer Primary shoul*be re!istere* as new Secondary

a)ter )ormer Secon*ar$ complete*the ta0eover an* became newPrimar$ >)alse?

(PL4:AT/3P%4-A%C3T4-/O(T e)ines the the lpa time !ap nee*e*between to primaries to select the5correct6 primar$.


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5he !ive 3nterfaces

HANA Startframe<or(- sapstartsrv & sapcontrol & H">calls, output )ormat 5GetProcessList6?

HANA)5opology- lan*scapeHost:on)i!uration.p$

>rc, output )ormat?

SR)5opology- h*bnsutil>calls, output )ormat 5'sr3state ''sapcontrol9+6?

SAP Hostagent- saphostctrl

>call, output )ormat 5List4nstances6?

SR)Status- h*bsl >now? & s$stem%eplicationStatus.p$ >)uture? >nowD

rc, calls, output )ormat?



+1

Previe< Scale)'ut

Every 2.0s: bash ./crm_mon+attr Wed Apr 2 17:17:21 2014

Last updated: Wed Apr 2 17:17:21 2014Last change: Wed Apr 2 17:14:27 2014 by hacluster via crmd on lv9042

Stack: classic openais (with plugin)

Current DC: lv9048 - partition with quorum

Version: 1.1.10-65bb87e

6 Nodes configured, 6 expected votes

14 Resources configured

Online: [ lv9041 lv9042 lv9048 lv9049 lv9050 lv9051 ]

Full list of resources:

stonith-sbd (stonith:external/sbd): Started lv9042

rsc_ip_LNX_HDB42 (ocf::heartbeat:IPaddr2): Started lv9049

Master/Slave Set: msl_SAPHana_LNX_HDB42 [rsc_SAPHana_LNX_HDB42]

Masters: [ lv9049 ]

Slaves: [ lv9041 lv9042 lv9048 lv9050 lv9051 ]

Clone Set: cln_SAPHanaTopology__LNX_HDB42 [rsc_SAPHanaTopology_LNX_HDB42]

Started: [ lv9041 lv9042 lv9048 lv9049 lv9050 lv9051 ]

Host \ Attr clone_state remoteHost roles site srmode sync_state vhost lpa_lnx_lpt

-------------------------------------------------------------------------------------------------------------------

lv9041 DEMOTED lv9051 3:S:master1:master:standby:master WALLDORF sync SOK lv9041 30

lv9042 WAITING 3:P:master1:slave:worker:standby ROT sync PRIM lv9042 1396451811

lv9048 DEMOTED lv9051 3:S:master3:slave:worker:slave WALLDORF sync SFAIL lv9048 30

lv9049 PROMOTED lv9041 3:P:master2:master:standby:master ROT sync PRIM lv9049 1396451811

lv9050 DEMOTED lv9051 3:S:master2:slave:worker:standby WALLDORF sync SFAIL lv9050 30

lv9051 DEMOTED lv9041 3:P:master3:slave:worker:slave ROT sync PRIM lv9051 1396451805

rsc_SAPHana_LNX_HDB42:4 promotion score on lv9049: 154

rsc_SAPHana_LNX_HDB42:0 promotion score on lv9041: 100rsc_SAPHana_LNX_HDB42:5 promotion score on lv9051: 60

rsc_SAPHana_LNX_HDB42:3 promotion score on lv9042: -9000

rsc_SAPHana_LNX_HDB42:1 promotion score on lv9048: -INFINITY

rsc_SAPHana_LNX_HDB42:2 promotion score on lv9050: -INFINITY



Than0 $ou.

+2

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SAP HANA System Replication and SUSE® Linux Enterprise Server for SAP Applications

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