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mode, you u must t set t the e base e URL to o the e load d balancer. So, if your load balancer is
http://www.myaddress.com/opinio, and you have e 2 2 cluster r members at http://10.0.2.10/opinio and
http://10.0.2.11/opinio,thebaseaddressshouldbesettohttp://www.myaddress.com/opinio
• PreferredIPaddress(optional):IftheserverhasmorethanoneNetworkInterfaceCards(NIC),thenyou
shouldassignwhichcardyouprefertouseforyourOpinioinstallation.JavareturnsalistofNICsinstalled
onyourserver.OpiniowillbydefaultusethefirstNICinthislist,andifthisipaddressisn’tyourpreferred
ipaddressfortheOpinioinstallationyouwillneedtosetthepreferredipaddress.Also,ifanewNICis
added,theipaddressforwhichyouhaveregisteredyourOpinioinstallation,willnotnecessarybethefirst
NICfoundbyJava,andthelicensewillnolongerbevalidifyoudon’tsetthepreferredipaddress.
• Logfiles:Clicktodownloadalllogfilesinthe(Opiniohome)/WEB-INF/logfolderontheserver.Thefiles
arecompressedintoazipfileandthendownloadedbythebrowser.
Databaseinformation:
• Databaseproductname:Nameofthedatabaseenginecurrentlyusedbythesystem.
• Databaseproductversion:Versionofthedatabasesystemused.
• JDBCDrivername:NameoftheJDBCdriver.JDBCisthetechnologyusedasabridgebetweenthesystem
and a a database. . It t facilitates s the e connection between Opinio and d the e database. . See e Sun's s JDBC C site
[http://java.sun.com/products/jdbc/]formoreinformation.
• JDBCdriverversion:VersionoftheJDBCdriver.
• DatabaseURL:UsedbytheJDBCdrivertofindandconnecttothedatabase.
Javainformation:
• Javaversion:TheversionofJavayouarerunning.
• Javavendor:ThevendoroftheJavaversionyouarerunning.
Toeditthesesettings,clickon"editsystemsettings"intheleftmenubox.
Pluginsetup
PluginsareusedtoextendthefunctionalityofOpinio.ToaddaplugintoOpinio,simplyplacethepluginJarfilein
theOpinio/WEB-INF/plugins.Todothis,youmusthavefilesystemaccesstotheapplicationserver.Iftheplugins
folderdoesnotexist,thencreateit.Mostlikelyitwillexist,becauseasamplepluginisincludedwithOpinio.
Freeandcommercialpluginsareavailablehere:
http://www.objectplanet.com/opinio/plugins.html
Pluginconfigurationwillvarydependingontheplugin.Somepluginsrequirenoconfigurationatall.Refertothe
documentationincludedwiththepluginformoredetails.
Seetheappendixcreatingpluginsforinformationonhowtocreateyourownplugin.
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Licensesetup
ThelicensepageletsyousetupallthelicensekeysforyourOpinioinstallations,whetheritisasingleinstallation,or
iftherearemultipleclustermembers.
EachOpinioinstallationwillhaveauniqueHostID.Thisisusedtogeneratethelicensekey.ThehostIDofthe
currentOpinioinstallationisshownattheupperpartofthescreen.
Whenenteringthisscreenthefirsttime,theHostIDforthecurrentOpinioinstallationwillbeshownatthetopofthe
form.EntertheIP-basedURLandavalidlicensekeyintheothercolumns,andclick'save'.
• LocalHostid:TheuniqueIDthatidentifieseachOpinioinstallation.Thisisusedtogeneratethelicensekey
afterpurchase.
• Ip-basedsystemURL:ThisistheURLsOpiniousesforcommunication(mostlyfortransferringfiles)between
clustermembers.ItdoesnotapplyifyouarerunningOpinioinsingle-servermode.Itisveryimportantthatall
URLsaresetcorrectlywhenrunninginclusteredmode.
• LicenseKey:ThisisthelicensekeythatenablesvariousfeaturesinOpinio.Itisthelicensekeythatdetermines
theeditionyouarerunning.
• Expiration:Thenumberofdaysuntilanewlicensekeymustbeobtained.
• Users:ThenumberofSurveyauthors/adminsallowedinthesystem.Thisnumberindicatesnamedusers.This
meansthatthelicensedeterminesthenumberofusersyoucanregister/createinthesystem.Onceyoureachthis
number,youwillnolongerbeabletoaddmoreusers,unlessexistingusersaredeleted.
Thenumberofsurveyrespondentsisunlimited,nomatterwhatkindoflicenseyouhave.Evenwithoutalicense
keyyoursurveyswillstillrun,andOpiniowillstillacceptresponses.
• Clustered:ShowsifclusteringisturnedONorOFFforthisparticularOpinioinstallation.Thisisdeterminedby
thelicensekey.
• Status:ShowsifthelicensekeyisOKorinvalid.
Ifyouenteraclusteredlicensekeyinthescreenabove, andthenclickonlicensesetupagain,youwillseethe
followingscreen:
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Thisallowsforconfiguringthelicensekeyforallmembersinthecluster.Thetoppartofthescreenisthesameas
wheninsingle-servermode.Thelicensekeyatthetoppartoftheformisfortheserveryouarecurrentlyconnected
to.Thelowertableisforconfiguringothermembers inthecluster.Notethatifyouareconnectedtothecluster
memberthroughtheloadbalancer,youcouldbeconnectedtoanyofthemembers.
TotestifallclustermembershavetheirIP-basedsystemurlsetupcorrectly,clickonTestIP-basedsystemURLin
theleftmenuboxwhileinlicensesetupforclustering.Oncethetestiscomplete,youwillreceiveastatusscreenthat
willindicateifallclustermembersareupandrunningandtheIPaddressesareconfiguredcorrectly.
Systemstatus
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Thesystemstatuspageletsyougetageneraloverviewofthedetailedinformationonvariousongoingactivities,and
theresourcesbeingusedinthesurveysystem.
Currentactivitysummarizesongoingactivitiesandsystemusageinformation,including:
• Onlineusercount:Thenumberofonlineusers
• Runningsurveys:Thenumberofsurveyscurrentlyrunning.Arunningsurveyisdefinedashavingstartdateprior
tothecurrentdate,andstopdateprecedingthecurrentdate.
• Online/ongoingrespondents: number of respondents that are online and answering survey questions for all
surveysintotal.Theserespondentshavenotcompletedthesurvey.Ifarespondenthasleftthesurveywithout
completing,heisremovedfromthiscountafter20minutesofinactivity.
• Respondentsstartedlasthour:numberofrespondentsthathasbegunansweringsurveyquestionsduringthelast
hour for r all l surveys in n total. This includes those who have e finished the surveys. The average number r of
respondentsperminutestartedwithinlasthourislistedintheparenthesis.
• Respondentscompletedlasthour:numberofrespondentsthathasfinishedansweringsurveyquestionsduringthe
lasthourforallsurveysintotal.Theaveragenumberofrespondentsperminutefinishedwithinlasthourislisted
intheparenthesis.
• Totalrunninginvitations:numberofinvitationtaskswhosestatusis'PENDING'or'RUNNING'forallsurveys
intotal.
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• Nextscheduledinvitation:nextscheduledinvitationtaskwhosestatusiscurrently'PENDING'.
• Onlinepanelists:numberofpanelistswhohavestartedrespondingtosurveysbutnotyetfinishedforallpanelsin
total.
Mostactivesurveyslistsupto10surveysthathavethemostnumberofresponseswithinthelast24hours.Surveys
arelistedfromthemostactivetoleastactive.Thetableliststhesurveynamesandtheircorrespondingresponses.
Resourcecountssummarizestotalnumbersofvariousapplicationresources,including:
• Totalsurveys:totalnumberofsurveysinthesystem.
• Totalrespondents:totalnumberofrespondentsforallsurveys.
• Totalusers:totalnumberofusers(authors).
• Totalfolders:totalnumberoffolders.
• Totalreportportals:totalnumberofreportportals.
• Totalpanelists:totalnumberofpanelistsforallpanels.
• Totalinvitations:totalnumberofinvitationsforallsurveys.
Systemresourcestatussummarizesongoingactivitiesandsystemusageinformation,including:
• Memoryusage:memoryusedbytheapplication
• Diskusageforuploadsandreports:diskspaceusedbyuploadedfilesandreportsgenerated
• Applicationuptime:thetimeelapsetsincetheapplicationwasstarted.Timeismeasuredindays,hours,minutes
andseconds.
Usermanagement
Opinio offers s a powerful set of features s that t enables s administrators s to o perform detailed user administration.
Administrators(withsuper-useraccess),cancreateusers,givethemaccesstovariousresourcesinthesystem,and
evendelegateusermanagement.
Theusermanagementfeaturesareaccessiblebyclicking"users"fromthemainmenu.
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Therearetwodifferentuserlistviews."Allusers"listsallexistinguserswithsymbolsindicatingwhethertheyare
onlineatthemomentornotandthe"online"viewlistsonlytheonlineusers.Onlyusersyouhaveadministration
accesstoareshown.Itisalsopossibletomakeasearchusingloginname,usernameorasubstringofthese.
Createanewuser
Tocreateanewuser,clickthe"newuser"linkintheleftmenubox.Formoreinformationabouttheelementsonthis
page,seeMyProfile.Aftertheuseriscreated,itwillappearintheuserlist.
CreatinguserscanonlybedonewithalicensededitionofOpinio.
Userlist
Clickingon"Users"fromthetopmenuwilllisttheusersyouareallowedtomanage.
Whileviewingtheuserlistyoucanseewhichusersareonline.Theywillbeindicatedbyagreenicon.Ifyouwantto
seetheonlineusersonly,clickonthe"Onlineusers"linkintheleftmenubox.
Youcansearchtheuserlistbyusingthesearchbaratthetopofthelist.Opiniowilldisplayalluserswhoseloginor
fullnamecontainsthesearchstring.Youcanonlysearchthroughtheusersyouhaveadmin-rightsto.
Fromtheuserlist,youcan:
• Edituser:Clickontheusernametoedittheuserprofile.
• Membership:Viewandedittheusermembershipinusergroups.Seeusergroupsformoredetails.
• Permissions:Toviewthepermissionsoftheuser.Seepermissionsfordetails.
• Newpermission:Toaddpermissionstooneormoreusers.Selecttheusersyouwanttogivepermissionsto,and
clickon"continue"atthebottomofthecolumn.See“newpermission”fordetails.
Usergroups
Ifyouaregoingtomanagealotofusers,itmightbeagoodideatoorganizetheminseparategroups(andperhaps
delegatetheadministrationofeachgroup).Ausergroupissimplywhatthenameimplies-asetofusersgrouped
togetherwiththeintentionofgivinggroupadministratorsawaytomanagetheseusers.Ausergroupmanagercan
addnewuserstothegroup,deleteusers,andgivepermissionstoresources(butonlytoresourcesthegroupadmin
alreadyhasaccessto).Click"newusergroup"intheleftmenubox.
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Entertheusergroupnameand,optionally,adescriptionofthegroup.Thensavetheusergroup.
Toadduserstoagroup,editausergroup,andclickon"addmembers".Selecttheuserstobeaddedtothegroup,
andclick"Save".Ontheusergrouppageyouwillseealltheuserslisted.
Permissions
Toaddpermissionstoauser,select"newpermission"fortheusersyouwanttoaddpermissionsfor,thenclick
"continue".Nowselecttheresourcetypeyouwanttosetthepermissionfor:
• Survey/folder:Surveyorfolderresourcetype.Withthistype,youmustnavigatetothecorrectfolderorsurvey.
• Questionlibrary:Questionlibraryresourcetype.
• User group:Usergroupresourcetype. . Ausergroupis asetofusers thatcanbemanagedbya usergroup
administrator.
• Dropdown:Dropdownlistresourcetype.
• Header:Headerresourcetype.
• Footer:Footerresourcetype.
• Inviteelist:Reusableinviteelistresourcetype.
• ALL(Superuser):Givefullaccesstoeverything
Nowthatyouhaveselectedaresourcetype,click"next"tosetthepermissiontypeperresource.Thepermissionsare
asfollows:
• ADMIN-Permissiontodoeverythingwiththeresource.Givingthistypeofpermissiontoafolder,givesthe
userallaccessrightstothefolderandallsubfolders,includingallsurveys.Thiskindof"recursive"permission
appliesonlytothiskindofpermission.Alltheotherpermission-typesmustbesetforallfoldersorsub-folders
andsurveysseparately.
• R-Permissiontoread
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• M-Permissiontomodify
• Sr-Permissiontocreatereportsinasurvey
• Srv-Permissiontoviewresponsesinasurvey
• Sra-Permissiontoadministrateresponsesinasurvey
• Si-Accesstoinvitationsinasurvey
• Mbl-Permissiontomodifyasurveybyusingquestionlibraries
• Cf-Permissiontocreatenewfoldersinthespecifiedfolder
• Cs-Permissiontocreatenewsurveysinthespecifiedfolder
• Cl-Permissiontocreatenewlibrariesinthequestionlibraryfolder
• UGA-Usergroupadministrator
Permissionsareadditive.Thismeansthatwhensettingpermissionsforauser,itisaddedtoexistingpermissionsfor
thisuser.
Newpermission
Addingpermissionsisdonethroughawizardof2ormorescreens.
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Thestepsare:
1. Selecttheuser(s)towhichyouareaddingthepermission.Ifyouareviewingdetailsonauser,andclickon"add
permission".Ifyouareviewingtheuserlist,youcanselectoneormoreusersandclick"continue".
2. Selecttheresourcetypeyouwanttoapplythepermissionto.Clickon"continue".
3. Selectthepermissiontype(s)toaddfortheuser(s)/resources.Clickonsave.
Performancehints
ManyfactorsdeterminesthescalabilityandperformanceofOpinio.Someoftheseissuesrequiresunderstandingof
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theunderlyingdatabasestructure.
Remember,thattheperformanceoftheapplicationisnotbetterthantheweakestlink.Inotherwords,theweakest
itemofoneofthebelow:
• Theserverhardware.Thisseemsveryobvious,butitcannotbestressedenough.Ifyouhaveveryhighloadson
yoursurveys,youmayneedtoupgradeyourserver.Opinioisdisk-intensive,becauseitneedstostoreresponses
constantly. This dictates afaststoragesystem. Ifyouarerunningthedatabaseonadifferentserverthanthe
applicationserver,thenitismostimportantwithafastdiskforthedatabase.
OpinioitselfismostlyCPUintensive,soifthedatabaseresidesonaseparateserver,youwillbewelloffwitha
fastCPUontheserverrunningtheapplication.
• Thenetwork.Withoutafastnetworkconnection,youmayneverbeabletoreachhighloadsforOpinio.Thisis
especiallyimportantifthedatabaseisonaseparateserver-thenyouwillneedafastlinkbetweentheapplication
serverandthedatabase.Alsothenetworklinkbetweentheapplicationserverandtheusersareimportant.
• Thedatabase.Aproperlytuneddatabaseisimportanttogetthemostoutofyourcurrentsetup.Wehavetriedto
identifyalltheneededdatabaseindexesforfastlookups.Butitisdifficulttoguessattheusagepatternofall
users.Soifyouareusingtheproductdifferentlythanhowwepredicted,thenyoumayhavetotunethedatabase
insomewayoranother.Pleaserefertothetuningsectioninthedocumentationforyourdatabase.
• TheJDBCdriver.ThispieceofsoftwareprovidestheconnectionbetweenOpinioandthedatabase,andisvery
important. Choose adriverthatisproventoworkevenat t highloads. . Ifyouare usingthe built-in n database
(ApacheDerby),thenyoudonotneedtoobtainaJDBCdriver.Foranyotherdatabase,youwillneedtogetone.
Seeinstallationinstructionsforhowtouseotherdatabases systems. Foran n extensivelistofavailableJDBC
drivers:http://industry.java.sun.com/products/jdbc/drivers
Other considerations:Ifyou are concernedwith networkbandwidth, , and d youhavelots s ofrespondents inyour
surveys,youshouldbecarefulwithusingimagesonyoursurveypages.Imagesconsumebandwidthveryquickly.A
normalsurveypagewillvaryfrom20to100kilobyte.Asingleimagecouldbelargerthanthis.
Memoryusageisakeyitemtolookoutfor.Generally,highloadsandlargesurveys(manyandcomplexquestions)
willcauseOpiniotousemorememory.Oftentimes,assigning256megabytetoOpinioisenough.Butunderheavy
load,512mbormoreisnecessary.Especiallyifyouhavemanyquestionsinyoursurvey.Thereasonthisconsumes
morememoryis thattherespondentsessioniscachedtoimproveperformance.Thiswilltakemorememorythe
morequestionsthesurveyhas.Therespondentisclearedfromcachewhenallquestionsarecompleted,orifthe
surveyisabandoned(after20minutes).
Toassignmorememorytotheapplication,thejavavirtualmachine(theplatformOpiniorunson)mustbetoldto
allowmorememory.Thejavaprocessisstartedbytheapplicationserver.
IfyouareusingTomcat,openupcatalina.bat(orcatalina.sh)inthetomcatbinfolder,andputthislineatthetopof
thefile:
Windows in n the catalina.bat t file:
set CATALINA_OPTS=%CATALINA_OPTS% -Xmx512m
On linux in n the catalina.sh h file:
JAVA_OPTS=" -Xmx512m -Djava.awt.headless=true "
ThisexamplesetstheJavamemoryusageto512mb.Setittoevenmoreifyouhaveenoughmemoryonyourserver.
SeethedocumentationforyourapplicationserverifyouarenotrunningTomcatonhowtoallocatemorememory.
Loggingmayaffectperformance.Iflog-levelissettodebugging,Opiniowillwritealargeamountoflog-statements
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