18vcs6unixservgroupdep Trans

7/24/2019 18vcs6unixservgroupdep Trans

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Veritas Cluster Server 6.0 for UNIX:Cluster Management

Lesson 1: Service Group Dependencies


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Lesson 1: Service Group Dependencies

Lesson 2: Reconfguring Cluster Membership

Lesson 3: Strtup nd !ilover "olicies

Lesson #: $lternte %et&or' Confgurtions

Lesson (: )igh $vilbilit* in the +nterprise

Lesson introduction


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Toic !"#ectives

Common pplictionreltionships

Describe common e,mple pplictionreltionships-

Service groupdependencies

Defne service group dependencies-

Service groupdependenc*e,mples

Describe e,mple uses o. service groupdependencies-

Confguring servicegroup dependencies

Confgure service group dependencies-

$lternte methods o.controllinginterctions

Confgure lterntive methods .orcontrolling service group interctions-

Lesson o"#ectives


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$.ter completing this topic/ *ou&ill be ble to describe e,mpleso. common pplictionreltionships-

Common alicationrelations$is


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Multitier services

Mn* services hve multipletiers-

0iers re represented b* seprteservice groups-

Reltionships e,ist bet&een tiers- Reltionships must be en.orced

&ithin CS-

eb

$pp

D


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eb

$pp

%&amle ': !nline on t$e same s(stem

+,mple criteri:

oth must be online toprovide the service-

eb nd $pp must runon the sme s*stem/ dueto s*stem interprocesscommuniction-

eb re4uires $pp to beonline frst-

5. $pp .ults/ eb must.ollo& it to the .ilovers*stem-

eb

$pp


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$pp

D

%&amle ): !nline on di*erent s(stems

+,mple criteri:

oth must be online toprovide the service-

$pp nd D cnnot runon the sme s*stem/ dueto s*stem usgeconstrints-

$pp re4uires D to beonline frst-

5. $pp .ults/ Dcontinues to run-

$pp

D


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%&amle +: !,ine on t$e same s(stem

+,mple criteri:

6ne node is used .or test environment-

"rod l&*s hs priorit*-

0est nd "rod cnnot beonline on the smes*stem-

0est

"rod

0est

"rod


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$.ter completing this topic/ *ou&ill be ble to defne servicegroup dependencies-

Service groudeendencies


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Service grou deendenc(de-nitions

Startu Categor( ailoverT(e

6nline

Child strts frst

Locl

Sme s*stem

So.t

!irm)rd

Globl$n* s*stem

So.t

!irm

RemoteDi7erents*stem

So.t

!irm

68ine Locl 9


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ailover t(es

Soft

eeps theprent online&hen thechild .ults

/ard

0'es child ndprent o8ine&hen either.ults

$pplies onl* ton online locldependenc*

5s llo&ed onl*bet&een single prentnd singlechild

irm

0'es theprent o8ine&hen the child.ults


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$.ter completing this topic/ *ou&ill be ble to describe e,mpleservice group dependenc*behvior-

Service groudeendenc(e&amles


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!nline local e&amle

Strtup behvior:

Child comes online frst "rent must come online on

the sme s*stem

So.t .ilover behvior:

0he child .ults nd .ils over to nvilble s*stem &hile the prent'eeps running-

0he prent is s&itched to the.ilover s*stem no& running thechild-

!irm .ilover behvior: 0he child .ults nd the prent is

t'en o8ine-

0he child is restrted on .ilovers*stem nd then the prent isrestrted on the sme s*stem-

eb

$pp

)rd di7erence

0he child is t'en o8ine i. theprent .ults-


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!nline remote e&amle

Strtup behvior:

Child must be online

"rent cn come onlineonl* on remote s*stem

!ilover e,mple .or so.t t*pe:

0he child .ults nd .ilsover to n vilble s*stem-

5. the selected trget s*stem.or the child is not runningthe prent/ then the prent

continues to run-

5. the selected trget hsthe prent is online:

0he prent is t'en o8ine-

0he child is brought online-

0he prent is then restrtedon s*stem di7erent .romthe child;s s*stem-

!irm di7erence

0he prent is l&*s t'en o8ine&hen the child .ults-

$pp

D


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!,ine local e&amle

Strtup behvior:

Child cn come onlinen*&here the prent is o8ine

"rent cn come online onl*&here child is o8ine

!ilover e,mple:

0he child .ults nd .ilsover to n vilble s*stem-

5. the selected trget s*stem.or the child is not runningthe prent/ then the prent

continues to run-

5. the selected trget hsthe prent is online:

0he prent is t'en o8ine-

0he child is brought online-

0he prent then restrts on s*stem di7erent .rom thechild;s s*stem-

0est

"rod


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$.ter completing this topic/ *ou&ill be ble to confgure servicegroup dependencies ccording toCS rules-

Con-guring servicegrou deendencies


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Service grou deendenc( rules

Service group dependenc* rules:

Child hs priorit*

Multiple prents

Multiple children e,cept .or o8ine locl

nd online locl hrd

M,imum o. fve levels

C*clicl dependencies prohibited

&eb

pp1 pp2 pp3

db1 db2

online globl frm

online locl frm

online globl so.t


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Creating service grou deendencies

group g1 ( )

requires group g2 online local firm

main.cfhagrp link parentchildonline local firm

hagrp dep [group]

hagrp unlink parentchild

Lin'ing in G


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!nline and o,ine of lined service grous

g2

g1

g#

g3

g(

Online local groupdependency

6nline=o8ine propgtes to

child=prent groups

hagrp online propagate

6nline propgtes to o8ine childgroups-

hagrp offline propagate68ine propgtes to online locl hrd

nd online locl frm prent groups

Does not o8ine online locl so.t prentgroups

or's &ith anyndsysoptions


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$.ter completing this topic/ *ou&ill be ble to implementresources nd triggers to controlservice group interctions-

1lternative met$odsof controllinginteractions


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preonline Runs the preonlinescript be.ore bringing the service

group online

Cn b*pss trigger &ith hagrp -online nopre group...

postoffline

Runs the postofflinescript .ter t'ing service group o8ine

postonline

Runs the postonlinescript .ter bringing servicegroup online

Using triggers to control service grouinteractions


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Managing multi2tier alications

Re4uirements:

isuli>e sttus o.multi9tier ppcross ph*siclnd virtulenvironments

Mnge orderedstrt or stop o.logicl ppliction

Strt or stop M

in con?unction&ith ppliction

APA APA APA APA APA APA

SQL SQL SAP SAP SAP IIS

SQL SQL APA APA APA IIS

ORA ORA ORA S ybase Sybase SAP

WLS WLS WLSWAS WAS WAS

ORA ORA ORA Sybase Sybase Sybase

Trading 1lication

WEB WEB WEB

APP APP

DB

3$(sical

Virtual


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Virtual 4usiness Services

5ata"ase

1lication

e" server

4illing

aaa

54

SI3

VV7

Service8rou

CS

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I3

Servi

ce8rou

CS

e"

VM

Service8rou

e"

VM

Service8rou

$ppliction)$

Veritas ClusterServer/1957

Veritas ClusterServer/1

S(mantec1lication/1

V!M.'

6.0


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/o; Virtual 4usiness Servicesors: /ig$ 1vaila"ilit(!ult "ropgtion et&een Clusters

apache_sg

oracle_apps_sg

oracle_sg

illing irtul usiness Service

S

S

S

Con-gura"leault 7eactionSo.t!irmRestrt

1utomatic ault3roagation%o e,ternl brin%o hertbetsSecure

Soft

Restart
http://www.symantec.com/business/products/trialware.jsp?pcid=pcat_business_cont&pvid=20_1http://290%2C35%2Cactive/Passive%20http://290%2C35%2Cactive/Passive%20


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Lesson summar(

e* points

@ou cn use service group dependencies to control interctionsmong pplictions-

@ou cn lso use triggers nd specili>ed resources to mngeppliction reltionships-

Re.erence mterils Veritas Cluster Server Users Guide

Virtual Business Service Availability Users Guide

ABob $ids $ppendi,


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%nd of 3resentation

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18vcs6unixservgroupdep Trans