19vcs6unixreconfigclust trans

7/24/2019 19vcs6unixreconfigclust Trans

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Veritas Cluster Server 6.0 for UNIX:Cluster Management

Lesson 2: Reconfguring Cluster Membership


2/23

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


3/23

Toic !"#ectives

$dding s*stem to

cluster

$dd ne& s*stem to running ,CS cluster-

Merging clusters Merge t&o running ,CS clusters-

$dditionlreconfguring ts's

"er.orm dditionl confgurtion ts's toenble services to use dditionl cluster

nodes-

Lesson o"#ectives


4/23

$.ter completing this topic/ *ou&ill be ble to dd s*stem to cluster-

$dding a s%stem to acluster


5/23

$dding a s%stem to a running VCS cluster

$dd ne& s*stem to running,CS cluster:

0eeping the pplictionservices nd ,CS vilble

+nbling the ne& s*stem to

run ll o. the pplictionservices-

$ssumptions:

&o or more s*stems ,CS so.t&re is not instlled on the ne& s*stem

Shred storge cn be connected to ll s*stems

s3 s#

s2


6/23

1

1

1

2

&rearing t'e ne( s%stem for clusteredalication services

nstll n* necessr* ppliction

so.t&re on the ne& s*stem-

Confgure n* ppliction resourcesnecessr* to support clusteredpplictions-

Chnge .rom crossover cblesto hubs or s&itches/ i.pplicble-

+nsure tht the privtenet&or' is not completel*disconnected &hile m'ing

chnges-

"h*sicll* cble clusterinterconnect-

+nsure the ne& s*stem is

cpble o. running pplictionservices in the cluster-

+mple confgurtion ts's:

Crete user ccounts

Cop* pplictionconfgurtion fles

Crete mount points

,eri.* shred storge ccess

1

3


7/23

Installing VCS on a single s%stem

,eri.* s*stem rediness on the ne&s*stem-

Log in s root nd nvigteto the so.t&re distribution-

./installvcs -precheck

Chnge into the instlldirector*-

1#

4n the ne& s*stem

nstll ,CS using installoption-

Do not confgure ,CS &henprompted-

nstll ,CS on the ne& s*stem-1(

./installvcs -install


8/23

15

$dding t'e ne(l% installed s%stem to t'ecluster

$dd the node to the eisting cluster-

Cretes llttab/ sysname

Confgures dis'6 or server6bsed.encing/ i. present on eistingcluster

!his ssumes .encing is lred*confgured on other s*stems7 there.oreSCS63 support hs been verifed-

Copies llthosts/ gabtab

Discovers net&or' inter.ces

./installvcs -addnode

8oins the ne& node to the clustermembership

Note: . the originl cluster

&s instlled &ith installsf/run installsf&ith theaddnodeoption-


9/23

Reconfgure service groups torun on the ne& s*stem/ i.pproprite- See detils lter

in the lesson-

4n the ne&l* dded s*stem

Verif%ing t'e ne( s%stem

,eri.* service re running ndcluster membership includes llnodes-

lltconfig

lltstat nvv active

vxfenadm -d

vxfenconfig -l

gabconfig -a"ort / b/ nd h

memberships should include

ll the originl s*stems ndthe ne& s*stem-

19


10/23

$.ter completing this topic/ *ou&ill be ble to merge t&o running,CS clusters-

Merging clusters


11/23

Merging t(o running VCS clusters

$ssumptions:

$ll s*stems hve the sme operting s*stemnd Storge !oundtion versions-

$ll service groups cn run on ll s*stems-

"rivte net&or's o. both clusters reisolted be.ore the merger-

$ll s*stems cn ccess shred storge-

s3s#

s2s1

4bective:

Merge t&o running ,CSclusters while maximizingapplication services and VCSavailability.

Targetcluster

Retin clusterD .ormerged .our6node cluster

Sourcecluster

Confgurtionto beetrctednd ddedto trgetcluster


12/23

11

$dding s%stems to t'e target clustercon)guration

Modi.* ,CS communiction fles onech s*stem in the trget cluster torecogni;e the s*stems to be dded.rom the source cluster-

+dit /etc/llthoststo ddentries .or the ne& s*stems.rom the source cluster-

+dit /etc/gabtabtoincrese the noption to

gabconfigb* the number o.s*stems in the sourcecluster-

!


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+nsure ech s*stem is cpble

o. running ppropriteppliction services-

13

1(

&rearing s%stems for clusteredalication services

nstll nd confgure n* dditionl

ppliction so.t&re re>uired tosupport the merged confgurtion onll s*stems-

$gents should onl* beinstlled7 *types.cfreincluded lter-

nstll n* dditionl ,CS gents onech s*stem-

+mple confgurtion ts's:

Crete user ccounts

Cop* pplictionconfgurtion fles

Crete mount points

,eri.* shred storge ccess

1#

Cop* n* dditionl custom gents toll s*stems-

nstlltion m* involve: !ree;ing s*stems

S&itching pplictions Rebooting s*stems


14/23

15

Merging service grou con)gurations

+trct service group confgurtions.rom the source cluster-

$dd the service group confgurtionsto the trget cluster-

15b

4n the sourcecluster

4n the targetcluster

+dit main.cmd- Retin service group

confgurtion commnds-

Retin *types.cfincludes-

hacf cftocmd \/etc/!"#vcs/conf/config

Cop* the fltered main.cmdto s*stem in the targetcluster-

haconf -makerw

+ecute the flteredmain.cmd

haconf dump -makero

sh main.cmd


15/23

$ppliction services re le.trunning on the s*stems-

1?

Stoing cluster services in t'e sourcecluster

Stop cluster services @,CS/ .encing/G$=/ LLA on the s*stems in thesource cluster-

gabconfig -$

lltconfig -$

/sbin/vxfen-shutdown

4n echs*stem

hastop all -force

4n the sourcecluster


16/23

Modif%ing VCS communications on t'esource cluster

Reconfgure ,CS communictionmodules on ll s*stems in thesource cluster nd ph*sicll*connect privte net&or's-

+dit /etc/llttabndmodi.* the cluster id to bethe sme s the trgetcluster-

+dit /etc/gabtabnd setthenoption to gabconfigto

the totl number o. s*stemsin the combined cluster-

+dit /etc/llthoststoensure ech s*stem hs uni>ue entr* in thecombined cluster-

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!here m* be other directives in

/etc/llttabtht need modifction/ such s set-addr/

include/ nd exclude-

4n ech s*stem in the sourcecluster


17/23

$lterntel*/ use LL/ G$=/.encing/ nd ,CS strtupfles-

4n ech s*stem in the sourcecluster

Starting cluster services on s%stems in t'esource cluster

Strt cluster services on s*stems inthe source cluster nd veri.* clustermembership-

lltconfig -c

sh /etc/gabtab

hastart

gabconfig a

vxfen_startup_file

"ort / b/ nd hmemberships should include

the ne& s*stem

11B


18/23

$.ter completing this topic/ *ou&ill be ble to reconfgure othercomponents &ithin mergedcluster-

$dditionalrecon)guration tas*s


19/23

11

13

Installing agents and con)guring triggers

nstll n* necessr* ,CS gents

tht re not instlled utomticll*b* C"-

Cop* nd merge triggers/ snecessr*-

nstll/ but do not confgure/

,CS gents-

=ecuse the trigger scriptsre in use on the eistingclusters/ merge the scriptsin temporr* director*-

Depending on the chngesre>uired/ it m* be

necessr* to stop clusterservices on the s*stemsbe.ore cop*ing the mergedtrigger scripts-

12 Cop* custom gents to necessr*s*stems-


20/23

Udating and testing service grou andresource con)guration

pdte service group nd resource confgurtions to use the ne&s*stems-

hagrp modify group%uto#tart&ist add system

haconf -makerw

hagrp modify group#ystem&ist add systempriority

,eri.* updtes b* running virtul fre drills nd s&itching theppliction services to the ne& s*stems-

haconf dump -makero

havfd group sys system -v

1#

1(

hagrp switch group to system


21/23

Udate locali+ed resources

pdte resource confgurtions to use the ne& s*stems-

hares modify resourceattribute sys system

haconf -makerw

hares local resourceattribute

,eri.* updtes-

haconf dump -makero

havfd group sys system -v

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hagrp switch group to system

Customized resource type attributes require special consideration.See the Veritas Cluster Server Administrator's Guide.


22/23

Lesson summar%

0e* points


23/23

,nd of &resentation

19vcs6unixreconfigclust trans

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