IBM Certified WAS 8.5 Administration Intelligent Management

8/17/2019 IBM Certified WAS 8.5 Administration Intelligent Management

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IBM Certified WebSphere

Application Server 8.5Administrator

A course to get certified in 7 days

Karun Subramanian, ESIS Consulting LLC

Part 3


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Section 7Intelligent Management

and Resilienc


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Introd!ction

● Introduced wit !AS "#$

● Pro%ides ser%ices to create %irtuali&ed

A''lication Ser%ing en%ironment wit

minimum administrati%e o%eread

● (etect issues and dynamically cange

runtimes

● )ou configure 'olicies tat go%ern te'erformance and ealt of te en%ironment

● A''lication editions enable rolling out

a''lications witout im'acting users


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Components of Intelligent

Management

● *n (emand +outers +e-uests are 'rioriti&ed and

routed based on rules# Can be configured as Ser%ers or

run in !eb Ser%er using Intelligent .anagement

enabled 'lug in

● /ealt .anagement .onitors Ser%ers and ta0es

actions based on ealt 'olicies defined

● (ynamic Clusters1Performance .anagement Cluster

members automatically created1remo%ed,

started1sto''ed based on 'olicies defined

● A''lication Edition .anagement 2o downtime during

A''lication u'date

● *%erload 'rotection Automatically ta0e action based on

CP and1or .emory e4austion


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Management Cont...

● Autonomic .anagers5 .a0e decisions for te en%ironment including

A''lication management, traffic sa'ing and ealt

'lacement5 APC 6 A''lication Placement Controller manages

(ynamic Clusters

5 (ynamic wor0load manager (!L.8

5 Autonomic re-uest flow manager A+9.85 /ealt Controller

● Ser%ice Policies Settings tat you define to

go%ern te re-uest 'riority


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Management Cont...

● :ree ty'es of Ser%ice Policies5 (iscretionary (efault ser%ice goal# Processed wen

no iger re-uest is waiting

5 A%g res'onse time E4 3$;; milliseconds5 Percentile +es'onse time E4


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Management Cont...

● !or0 class re-uest classification rules allow

re-uests to be classified# ses S@L wereB

class style rules using te information from

te re-uest i',user id,eader etc8

● :ransaction Class 'ro%ides te lin0 between

a''lication and ser%ice 'olicy

● A ser%ice 'olicy can a%e multi'letransaction classes ma''ed to it# ut a

transaction class must ma' to only one

ser%ice 'olicy


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Management Cont...

Ser%ice Policy


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"n #emand Ro!ter $%plained

● ?a%a based 'ro4y ser%er# Sits in front of

A''lication Ser%ers

● +outes re-uests to A''lication ser%ers

based on o'erational 'olicy


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&ealth Management

● Policy dri%en management 6 monitors te

system and ta0es actions

● /ealt 'olicies define wat to monitor for

and wat to do wen certain conditions are

met

● /ealt Controller Autonomic manager8

'rocesses te /ealt Policies# Actions canbe done automatically or wit manual

inter%ention

● :ere is one /ealt Controller 'er cell


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&ealth Management Cont...

● /ealt Conditions

5 Age ased

5 E4cessi%e re-uest timeout

5 e4cessi%e res'onse time

5 E4cessi%e memory usage

5 E4cessi%e Darbage Collection

5 .emory Lea05 Storm (rain

5 !or0 Load


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&ealth Management Cont...

● /ealt Actions

5 +estart Ser%er

5 :a0e :read dum' a%a core8

5 :a0e /ea' dum'

5 Put Ser%er in maintenance mode

5 :a0e out Ser%er from maintenance mode

5 2otify Administrator S.:P85 Send S2.P tra'

5 Custom action


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Application $ditions

● Edition Control Center manages A''lication

editions

● Enables u'dating te a''lication witout

interru'ting te users

● +outing 'olicy and on demand router are

re-uired to use two editions simultaneously

● !en you need to %alidate an edition, youcan a%e !AS create a dynamic cluster

automatically and de'loy te edition for you

● )ou must acti%ate an edition before it can


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Application $ditions Cont...

● +olling out re'laces te current a''lication

edition wit new edition witout interru'tion

● +e-uests are -uiesced and rerouted to oter

members or tem'orarily -ueued8 wile te newedition is being acti%ated

● )ou can roll out

5 atomically can -ueue re-uests at *(+ toensure two editions do not ser%e at te same

time8# (e'loys on alf of cluster at a time8

5 grou'ed te grou' si&e defined by you8#

(oes not -ueue re-uests


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Application $ditions Cont...

● )ou can coose to restart eiter ust te

a''licationsoft8 or te entire a''lication ser%er

ard8

● )ou can s'ecify a drainage inter%al for-uiescing te tt' re-uests

● Concurrent acti%ation of te A''lication editions

'ossible wen a routing 'olicy is defined at te

*(+ *(+ needs to 0now wic grou' of users

to route to a 'articular edition8

● !it %alidation mode, te de'loyment target is

cloned and te new edition is de'loyed for


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A!tonomic Managers e%plained

● A+9. Autonomic re-uest flow managers5 Controller Do%erns te re-uest flow# +uns in any

node agent, *(+ or dmgr

5 gateway 'er used combination of 'rotocol family,'ro4y 'rocesses and de'loyment target# 9or /::P

and SIP, runs on *(+# 9or ?.S and II*P, runs on

!AS

5!or0 flow estimator 'er target cell# +uns in anynode agent, *(+ or dmgr

● (ynamic !or0load Controller 5 (ynamically adusts ser%er weigts minimi&e

res'onse time# *ne 'er cluster


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A!tonomic Managers e%plained

● A''lication 'lacement controller 5 *ne 'er cell osted in (.D+ or node agent

5 .anages a''licationBs location witin a node grou'

5 Starts and sto's !AS instances to manage/::P,SIP,?.S and II*P traffic

● *n (emand Configuration .anager 5 .aintains cell to'ology information to 0ee' oter

autonomic managers informed

5 Enables *(+ to dynamically configure routing rules

based on configuration canges suc as

A''lications installed1remo%ed,!ASs

started1sto''ed


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More on Service 'olic

● Enables classifying, 'rioriti&ing and

intelligently routing wor0load

● Sets 'erformance goals and business

im'ortances of a''lications

● :wo com'onents of a Ser%ice Policy5 Im'ortance identifies most im'ortant wor0 during

resource contention5 Doal(etermines ow wor0 is e%aluated to ensure

ser%ice 'olicy le%el

F (iscretionary, A%erage +es'onse :ime, +es'onse

time 'ercentile


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More on Service 'olic Cont...

● Ser%ice Policies are related to wor0load using

transaction classesB

● !or0 classesB ma' wor0load to transaction classesB

● Eac wor0 class is associated to5 *ne ?EE A''lication

5 *ne of te following ty'eB of re-uests

F +L 'refi4 for /::P

F .etod name for II*PF us G (estination for ?.S

● Eac wor0 re-uest belongs to e4actly one transaction

class# Eac transaction class belongs to e4actly one

Ser%ice Policy


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Creating a Service 'olic

● !AS Admin Console 6H *'erational Policies

6H Ser%ice Policy 6H 2ew

● Pro%ide a name and Doal :y'e

(iscretionary, A%g res'onse time or

Percentile res'onse time8

● Associate an im'ortance lowest to igest8

● Select .onitor for 'ersistent 'olicy%iolationsJ to setu' runtime tas0 wen 'olicy

%iolation occurs

● Associate a transaction classB or create a


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Section 8'erformance Monitoring

and (!ning


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'erformance Monitoring overvie)

● P.I Performance .onitoring Infrastructure85 ?S+677 based ?EE .anagement +eference

im'lementation ?.8

5 ?a%a, !E or ?. client can retrie%e te'erformance data collected by P.I#

● :P :i%oli Performance iewer85 iewed in Admin Console

● +e-uest .etrics5 :ool tat uses timing agents to trac0 te indi%idual

re-uest 'rocess time

5

rea0 down of a transaction sowing time s'ent at%arious subsystems


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'MI

● P.I can be enabled or disabled using te

!AS Admin Console enabled by default8

● Enabling1(isabling re-uires Ser%er restart

● arious statistics set can be configured5 asic,E4tended,All,Custom,2one

● Performance o%eread of P.I can be from >

to M =


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'MI Cont...


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Re*!est Metrics

● Can be enabled1disabled using !AS Admin

Console# :is is a cell wide cange

● arious trace le%els

5 2one, /o's, Performance (ebug, (ebug5 9iner te trace le%el, granular te brea0down

of te res'onse time witin a transaction

● /::P Plugin must be regenerated wenenabling +e-uest .etrics

● Additional filters can be configured to target te

metrics collection to a 'articular subsystem

● *ut'ut of +e-uest .etrics can be logged to


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+ie)ing 'erformance #ata

● :i%oli Performance iewer is integrated wit

Admin Console

● )ou can %iew data from only one Ser%er at a

time

● Setting to modify refres rate and buffer si&e

● (ata can be %iewed as raw,rate of cange or

cange in %alue● :P data is 'rocessed by dmgr

● :P data can be logged for future use


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+ie)ing 'erformance #ata Cont...

● :ree ways in :P5 Summary +e'orts

Deneral %iew in tabular format Ser%lets, E?s,

connection 'ools etc85 Performance .odules

:abular or gra' %iew of real time 'erformance data

5 Ad%isors

Pro%ide tuning ad%ice for well 0nown ots'ots tread

'ool usage, %m settings etc8 based on te P.I data

collected


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(ivoli 'erformance +ie)er


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'erformance Advisors

● :wo Ad%isors a%ailable5 Performance Ad%isor in :P

5 Performance and (iagnostic ad%isor

● Performance and (iagnostic ad%isor runs inte ?. of te !AS and ence not

e4austi%e# Logs ad%ice in System*ut#

● Performance Ad%isor in :P runs innodeagent in 2(8 and %iewed %ia :P in

Admin console# E4austi%e


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Settings that affect performance

● :read Pools Limits te number of treads

tat te 'ool can s'awn# E4cessi%e treads

generally lead to ea%ier CP usage due to

conte4t switcing8● ?(C Connection Pools 2umber of

connections to te bac0end (atabase# :oo

many connections in use may indicateConnection Pool lea0

● ?. DC 'olicy must be cosen based on

re-uirement# 9re-uent DC slows down te

a lication


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WebSphere #namic Cache

● Caces out'ut of Ser%lets,?SPs,!eb

Ser%ices and commands

● Enabled by default

● Cace .onitor !eb A''lication lets you

monitor te cace 'erformance comes wit

te 'roduct8

● Accessed at Ser%er 6H Container Ser%ice6H(ynamic cace

● Allows dis0 offload and cace re'lication

● !ebS'ere etreme scale is te strategic

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IBM Certified WAS 8.5 Administration Intelligent Management