MySQL High Availability - Percona · MySQL High Availability And other stuff worth talking about...

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© 2017 Percona 1 Peter Zaitsev MySQL High Availability And other stuff worth talking about CEO Moscow MySQL Users Group Meetup July 11 th , 2017

Transcript of MySQL High Availability - Percona · MySQL High Availability And other stuff worth talking about...

Page 1: MySQL High Availability - Percona · MySQL High Availability And other stuff worth talking about CEO Moscow MySQL Users Group Meetup July 11th ... Time Series Databases, PostgreSQL,

©2017Percona1

PeterZaitsev

MySQLHighAvailabilityAndotherstuffworthtalkingabout

CEOMoscowMySQLUsersGroupMeetupJuly11th,2017

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FewWordsaboutPercona

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Percona’s Purpose

ToChampionUnbiasedOpenSourceDatabaseSolutions

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WeDo

Support,ManagedServicesforMySQLandMongoDB

AlsoConsultingandTraining

HelpingcompaniestomigratetoOpenSourceDatabase

DevelopOpenSourceSoftware

Solutionstomaximizeyour success

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BroadSoftwareEcosystemSupport

MySQL PerconaServer MariaDB PerconaXtraDBCluster

GaleraClusterforMySQL MariaDBGaleraCluster MongoDB PerconaServerforMongoDB

AmazonRDSforMySQL/MariaDB/Aurora GoogleCloudSQL

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100%FreeandOpenSourceSoftware

PerconaServerforMySQL

PerconaServerforMongoDB

PerconaXtraDBCluster

PerconaXtrabackup PerconaToolkit

PerconaMonitoringandManagement

6

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MySQLHighAvailability

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WhatisHighAvailability

WhatDoyouThink?

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Ithink…

ServingAlltheClientsCorrectlyalltheTime

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PerformanceandHighAvailability

Unacceptableperformancecanbeindistinguishablefromdowntime

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HighAvailabilityisNeverPerfect

•99.9%or“3nines”Canbemeasuredintermsof“time”wheresystemwas

available

•Goodtoconsidercasesofpartialavailability

Canbemeasuredinthetermsof

successfulrequestsserved

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IsPerfectHighAvailabilitytheGoal?

Booking.comhasthe“downtimebudget”

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TohaveGoodHighAvailability

Godown“less” Recoverfaster

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NotaDatabaseProblem

SystemsProblem

ButDatabaseisthekeycomponent

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AchievingHighAvailability

TechnologyAspects

ProcessAspects

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TechnologyAspects

DesigningandBuildingHighlyAvailableSystem

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TechnologyAspects

FocusonTechnologyinthispresentation,itiswhatMySQLSpecific

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ProcessAspects

ManagingSysteminHighlyAvailableway

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Process– GeneralBestPracticesQualityAssuranceforCodeandOperationsPractices

TablesandQueryReview

PerformanceTesting

CapacityPlanning

ClearRollBackProcess

Beingabletodisablefeature“live”

“OnCall”fordevsandops

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HighAvailabilitythroughRedundancy

“Server”Redundancy

NetworkRedundancy

DataCenterRedundancy

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StatelessvsStateful forHA

• Multipleinstances• HighAvailabilityiseasyStateless

• Needto“Maintainstateinhighlyavailablefashion”

• MuchharderproblemStateful

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Databaseare…

Stateful

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HighLevelThoughts

Letsthinkaboutdatabaseasablackbox

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HAConcernsforDatabases• WhatkindofguaranteesdoIhaveaboutmydatabeingpersistedDurability

• Howmychangesarepropagatedandbecomevisible?ChangeVisibility

• WhichfailuressystemisdesignedtohandleandhowitreactsFailureHandling

• HAisneverfree.HowarewepayingforguaranteesPerformance

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Replication

WithStatefulSystemsHArequiresmaintainingmultiplecopiesofdata

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Focus

FocusonDatabaseEnginelevelReplication

asMostCommon

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ThingsToConsider

HowReplicationisHappening

WhoandHowDetectsFailure

MechanicsofFailoverandRecovery

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MySQLOptions

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MySQLOptionstoConsider

MySQLReplication

MySQLGroupReplication

Galera andPerconaXtraDB Cluster

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MySQL ReplicationStandardMySQLReplication

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“Classic”MySQLReplication

FullyAsynchronous

NoFailureDetectionandPromotion

ManualProvisioning

CanrunMulti-Master

NoConflictHandling

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Semi-Synchronous

IsAsynchronous

OneoftheSlavesgetsacopybeforecommitsucceedsontheMaster

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GTID

• “Position”identifiedbyBinaryLogfileandOffset• DifferentondifferentnodesinReplicationTopology• Simple

OldStyleMySQL

Replication

• Eachtransactiongetsanidentifier• NodesknowwhattransactionstheyExecuted• GTIDsameintheReplicationTopology• Hard

GTID

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MySQLReplicationTopologies

MastercanhaveanynumberofSlaves

Canreplicateeverythingorpartofdataset

Youcancascadereplicationwithnolimits

Youcancreatereplicationloops(throughnotrecommended)

StartingMySQL5.7slavecansourcefrommultiplemasters

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MySQLReplicationPerformance

SingleThreadinMySQL5.5andBelog

ThreadperdatabaseinMySQL5.6

Multi-Threaded(evensingletable)inMySQL5.7

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MakingMySQLReplicationBetter

MHA

MySQLFailover

Orchestrator

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OrchestratorScreenshot

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PMMDashboardforReplication

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MySQLGroupReplicationAndInnodb Cluster

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MySQLGroupReplicationOverview

InspiredbyGaleraIdeas(andSuccess)

BuiltontopofstandardMySQLReplication

AvailableasPluginforMySQL5.7

ConsideredGAbutreallyveryearlyproduct

Page 41: MySQL High Availability - Percona · MySQL High Availability And other stuff worth talking about CEO Moscow MySQL Users Group Meetup July 11th ... Time Series Databases, PostgreSQL,

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DifferencefromMySQLReplicationNoMaster/SlavebutGroupMembership

Transactionsarecommittedwhentheyarecertifiedbymajorityofnodes(Paxos)

DoesnotacceptwritesifthereisnoQuorum

FlowControltopreventunlimitedreplicationlag

Nodesencounteringinconsistencyleavethecluster

ConflictDetectionandResolution(oravoidance)

SimpleFailOver

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MySQLGroupReplication- Writes

ByDefaultconfiguresitselfasSinglePrimary

Canconfiguretoallowwritestoanynode

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MySQLGroupReplicationLimitations

NoAutomatednodeProvisioning

ManualRecoveryoffailednodes

Noway(yet)toensurenodedoesnotreadstaledata

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MySQLInnodb Cluster

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MySQLInnodb ClusterReally

MySQLGroupReplication

MySQLShell(for

configuration)

MySQLRouterfortraffic

management

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Percona XtraDB Cluster and “Galera”

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Percona XtraDB Cluster

VirtuallySynchronousReplication

WellknownInnodbStorageEngine

AllReadsareLocal

ParallelReplication

Writetoanynodebehavior

BuiltinNodeProvisioningandHA

WorksgreatintheCloud!

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PXCvsGalera

Galera

• Isreplicationtechnology/library• ComparetoLinuxKernel

PerconaXtraDBCluster

• PerconaServer• EnablingEnhancements• GaleraLibrary• ProvisioningTools• HAandLoadBalancing• IntegratedtogetherandTested• ComparetoLinuxDistribution

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PXC Data Architecture

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ArchitectureConcepts

AllNodesHaveFullcopyofData

EveryNodeisEqual

NoCentralManagement

NoSPOF

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ClusterReads

ReadsarealwaysLocal

StaleReadscanbeallowedordisallowed

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ClusterWrites

WriteononenodeorWriteAnywhere

CertificationBasedReplication

CommunicationonCommitonly

AsynchronousApplication

ParallelReplication

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TransactionCommitFlow

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QuorumLossofconnectivity

54

NetworkProblem

DoesnotacceptReads&Writes

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AutomaticNodeProvisioning 55

writes

writeswrites

new node joining

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AutomaticNodeProvisioning 56

writes

writeswrites

new node joiningwhen ready

writes

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TrafficManagementSolutions• NotImmediate,DoesnothandleexistingconnectionsDNS

• TCP/IPPortlevel.DoesnotunderstandMySQLProtocolHAProxy

• LikeHAProxyintheCloudElasticLoadBalancer(etc)

• CurrentlyverybasicMySQLRouter

• ProprietarySolutionsMaxScale,ScaleArc

• MySQLProtocolAware100%OpenSourceProxySolutionforMySQLProxySQL

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WeintegrateProxySQL withPXC

HighAvailability

Multiplexing(ConnectionPooling)

Caching

Read/writeSplitting

EasyConfigurationwithproxysql-admin

Canrunindedicatedwriterandloadbalancedmode

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DedicatedsharedProxySQL 59

application server 1 application server 2 application server 3

PXC node 1 PXC node 2 PXC node 3

ProxySQL

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ProxySQL onapplicationsideapplication server 1 application server 2 application server 3

PXC node 1 PXC node 2 PXC node 3

60

ProxySQL ProxySQL ProxySQL

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ProxySQL withPMM

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PerconaXtraDB Cluster5.7pxc_safe_mode – topreventyoufromvisiting

encrypt_pxc_traffic – EasytouseClusterTrafficEncryption

InstrumentationwithPerformanceSchema

BetterUsability

FasterSST

BettergeneralPerformance

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PXC5.7PerformanceImprovementshttp://bit.ly/2qGCr0T andhttp://bit.ly/2pzvAIW

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PXCatPMM

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ScalingWrites?

ShardoverPXCClusterratherthanMySQLReplicas

Page 66: MySQL High Availability - Percona · MySQL High Availability And other stuff worth talking about CEO Moscow MySQL Users Group Meetup July 11th ... Time Series Databases, PostgreSQL,

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ThingsToKeepinMind

UseInnodbstorageengine

PrimaryKeyonalltables

AvoidLargewritetransactions(changingmanyrows)

PlanDatasizeforSSTtimecorrectly

HotRows

OptimisticLocking

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PXCvsMySQLGroupReplication

GreatWebinarbyKennyGryphttps://www.percona.com/resources/webinars/percona-xtradb-cluster-galera-cluster-mysql-group-replication

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SomeUnrelatedbutWonderfulTopics

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PerconaMonitoringandManagement

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PerconaMonitoringandManagement

100%FreeandOpenSource

ComprehensiveDatabasefocusedMonitoring

SupportsMySQLandMongoDB(andvariants)

EasytoInstallandUse

Version1.xfocusesonTrendingandQueryAnalyses

ManagementFeaturestocome

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WhydidwecreatedPMM

Nogooddatabasefocusedmonitoringsolution

ExistingsolutionsProprietaryorCloudOnly

Doityourselfispossiblebuthard

Wanteveryonetobeabletorunmonitoringineveryenvironment

Tofixproblemsbeforetheyappear

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WhatQueriesarecausingtheload?

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Whyaretheycausingthisload?

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Howtofixthem

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SystemInformation

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WhathappensonOSandHardwareLevel

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AswellasDatabaseLevel

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BesttocheckoutDemo

http://pmmdemo.percona.com

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HaveaFriend?

Referafriendandget$1000ifoneishiredbyPercona

…andeternalgratitudeforhelpingtogetthemostamazingjob

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PerconaLiveEuropeCallforPapers&RegistrationareOpen!

ChampioningOpenSourceDatabases▪MySQL,MongoDB,OpenSourceDatabases▪TimeSeriesDatabases,PostgreSQL,RocksDB▪Developers,Business/CaseStudies,Operations▪September25-27th,2017▪RadissonBlu RoyalHotel,Dublin,Ireland

SubmitYourProposalbyJuly17th!www.percona.com/live/e17

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[email protected]

P.SWe’reHiringhttp://bit.ly/PerconaJobs

Thank You!

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DATABASE PERFORMANCEMATTERS

DatabasePerformanceMattersDatabasePerformanceMattersDatabasePerformanceMattersDatabasePerformanceMattersDatabasePerformanceMatters


Choosing a MySQL High Availability Solution...Marcos Albe, Percona Inc. Percona Live Open Source Database Conference Santa Clara – April 2017 Choosing a MySQL High Availability Solution

Choosing a MySQL High Availability Solution...Marcos Albe, Percona Inc. Percona Live Open Source Database Conference Santa Clara – April 2017 Choosing a MySQL High Availability Solution

High Availability Using MySQL Group Replication - Percona · High Availability Using MySQL Group ... 50 ” INSERT x; Tuesday ... –MySQL Group Replication is now self-contained

High Availability Using MySQL Group Replication - Percona · High Availability Using MySQL Group ... 50 ” INSERT x; Tuesday ... –MySQL Group Replication is now self-contained

Percona Live: Various MySQL High Availability (HA) Solutions

Percona Live: Various MySQL High Availability (HA) Solutions

MySQL Geographic Features in - Percona

MySQL Geographic Features in - Percona

common_schema DBA's framework for MySQL - Percona

common_schema DBA's framework for MySQL - Percona

Percona Live Europe 2016 Use ProxySQL to Improve …Percona Live Europe 2016 Use ProxySQL to Improve Your MySQL High Availability Solution Marco Tusa Manager Consulting Amsterdam,

Percona Live Europe 2016 Use ProxySQL to Improve …Percona Live Europe 2016 Use ProxySQL to Improve Your MySQL High Availability Solution Marco Tusa Manager Consulting Amsterdam,

MySQL optimisation Percona LeMug.fr

MySQL optimisation Percona LeMug.fr

MySQL Monitoring - Percona · MySQL Monitoring Finding Meaning in Beautiful Graphs Peter Zaitsev CEO, Percona Oracle Open World September 20, 2016. 2 About Percona ... Or cloud hosted

MySQL Monitoring - Percona · MySQL Monitoring Finding Meaning in Beautiful Graphs Peter Zaitsev CEO, Percona Oracle Open World September 20, 2016. 2 About Percona ... Or cloud hosted

Best practices for MySQL High Availability percona live ... · Best practices for MySQL High Availability Colin Charles, ... • DRBD • Linux administration vs. DBA skills ... •

Best practices for MySQL High Availability percona live ... · Best practices for MySQL High Availability Colin Charles, ... • DRBD • Linux administration vs. DBA skills ... •

Percona server - MySQL on Steroids Devpoint

Percona server - MySQL on Steroids Devpoint

Percona Amsterdam 2015 MySQL Keynote

Percona Amsterdam 2015 MySQL Keynote

Percona Software & ServicesUpdate · Percona Server for MySQL MariaDB Percona XtraDBCluster GaleraCluster for MySQL MariaDBGaleraCluster MongoDB Percona Server for MongoDB Amazon

Percona Software & ServicesUpdate · Percona Server for MySQL MariaDB Percona XtraDBCluster GaleraCluster for MySQL MariaDBGaleraCluster MongoDB Percona Server for MongoDB Amazon

Integrate Percona MySQL...EventTracker: Integrate Percona MySQL 3 Introduction Percona MySQL is an open source software company specializing in . MySQL support, consulting, managed

Integrate Percona MySQL...EventTracker: Integrate Percona MySQL 3 Introduction Percona MySQL is an open source software company specializing in . MySQL support, consulting, managed

jira.percona.com · Percona XtraDB Cluster Documentation, Release 8.0.18-9.3 Percona XtraDB Clusteris a database clustering solution for MySQL. It ensures high availability, prevents

jira.percona.com · Percona XtraDB Cluster Documentation, Release 8.0.18-9.3 Percona XtraDB Clusteris a database clustering solution for MySQL. It ensures high availability, prevents

Percona tool kit for MySQL DBA's

Percona tool kit for MySQL DBA's

MySQL In the Cloud - Percona · MySQL In the Cloud Migration, Best Practices, High Availability, Scaling CEO Los Angeles MySQL Meetup ... •Amazon AWS typical example Private •Infrastructure

MySQL In the Cloud - Percona · MySQL In the Cloud Migration, Best Practices, High Availability, Scaling CEO Los Angeles MySQL Meetup ... •Amazon AWS typical example Private •Infrastructure

Percona Live 2014 - Scaling MySQL in AWS

Percona Live 2014 - Scaling MySQL in AWS

Best practices for MySQL High Availability percona live 2017

Best practices for MySQL High Availability percona live 2017

Percona XtraDB Cluster Documentation · Percona XtraDB Cluster Documentation, Release 5.6.22-25.8 Percona XtraDB Cluster is High Availability and Scalability solution for MySQL Users.

Percona XtraDB Cluster Documentation · Percona XtraDB Cluster Documentation, Release 5.6.22-25.8 Percona XtraDB Cluster is High Availability and Scalability solution for MySQL Users.

Webinar-Mar2019-MySQL High Availability and Disaster …...© 2019 Percona. 1 Peter Zaitsev, CEO MySQL High Availability and Disaster Recovery on AWS From doing it manually to Amazon

Webinar-Mar2019-MySQL High Availability and Disaster …...© 2019 Percona. 1 Peter Zaitsev, CEO MySQL High Availability and Disaster Recovery on AWS From doing it manually to Amazon