The document discusses MySQL high availability options including: 1) Asynchronous and semi-synchronous replication for high availability deployments. 2) MySQL InnoDB Cluster which uses Group Replication, MySQL Router, and MySQL Shell to provide an integrated high availability solution. 3) Examples of deploying MySQL InnoDB Cluster in single and multi-data center configurations for high availability and disaster recovery.

1. MySQL High Availability
Deployment Practice
马楚成 (Ivan Ma)
Copyright © 2020 Oracle and/or its affiliates.
MySQL Principal Solution Engineer
Oracle MySQL GBU, Oracle LLC
2020-06-13

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MySQL Sessions – Day 2

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Agenda
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MySQL Latest Update
MySQL High Availability(Past, Present and Future )
Deployment Practice

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https://www.facebook.com/groups/hkmysqlusergroup/

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MySQL Version and LifeCycle
• MySQL Enterprise Edition
– MySQL 5.6
• Feb-2021 (Extended Support End)
– MySQL 5.7
• Oct-2020 (Premier Support End)
– Using MySQL 8.0
• NDB Cluster (Carrier Grade Edition)
– NDB Cluster 8.0 (New!)
• Jan-2020 Released
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MySQL Updates
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GIS / Spaital
JSON / Document Store
Reliability (MySQL Replication, MySQL InnoDB Cluster)
MySQL
Shell
MySQL
Router
MySQL
Enterprise
Backup
MySQL
Enterprise
Monitor
MySQL
Enterprise
Workbench
MySQL Security – Role, Dual Password, Encryption TDE, Firewall, Fine grained Audit …
Recursive CTE
Windows Functions
Tables….

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MySQL Document Store: Architecture
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X DevAPI Implemented in connectors for
C++, Java, .Net, Node.js, Python, PHP
working with Communities
New MySQL Shell
Python, JavaScript & SQL modes
Admin functions
Supports CRUD operations
Operation Document Relational
Create Collection.add() Table.insert()
Read Collection.find() Table.select()
Update Collection.modify() Table.update()
Delete Collection.remove() Table.delete()
Use SQL, CRUD APIs – Document (NoSQL) and
Relational (SQL), or “All of the Above”
All of this is in addition to the Classic APIs
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-
tutorial-javascript.html

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js> session.createSchema('name')
js> use name
js> db.getCollections()
js> db.createCollection(‘myCollection')
js> db.getCollections()
js> db.myCollection.add({“param1":“value1", “param2":“value2”})
js> db.myCollection.find()
js> db.myCollection.find().limit(1)
js> db.myCollection.find("_id = '00005af018430000000000000002'")
js> db.myCollection.modify("_id = '1234'").set(“param",“value")
js> db.myCollection.remove("_id = '1234'")
js> session.startTransaction()
js> …
js> session.rollback()
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MySQL Document Store cheat sheet
Create
Read
Update
Delete
Transactions

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Past, Present and Future (MySQL HA)
• In the Past,
– Setting up Replication topology was done manually, taking many steps
• including user management, restoring backups, configuring replication...
– MySQL offered the technical pieces, leaving it up to the user to setup an (always customized) architecture
– This requires technical components ... bringing lot's of work for DBA's and experts, who spent their time
automating
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Past, Present and Future (MySQL HA)
• In the Past,
– Setting up Replication topology was done manually, taking many steps
• including user management, restoring backups, configuring replication...
– MySQL offered the technical pieces, leaving it up to the user to setup an (always customized) architecture
– This requires technical components ... bringing lot's of work for DBA's and experts, who spent their time
automating
• 2016 - MySQL InnoDB Cluster
– Group Replication: Automatic membership changes, network partition handling, consistency...
– Shell to provide a powerful interface that helps in automating an integrating all components
– InnoDB CLONE to automatically provision members, fully integrated in InnoDB
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Past, Present and Future (MySQL HA)
• In the Past,
– Setting up Replication topology was done manually, taking many steps
• including user management, restoring backups, configuring replication...
– MySQL offered the technical pieces, leaving it up to the user to setup an (always customized) architecture
– This requires technical components ... bringing lot's of work for DBA's and experts, who spent their time
automating
• 2016 - MySQL InnoDB Cluster
– Group Replication: Automatic membership changes, network partition handling, consistency...
– Shell to provide a powerful interface that helps in automating an integrating all components
– InnoDB CLONE to automatically provision members, fully integrated in InnoDB
• 2020 - MySQL InnoDB Replicaset
– ‘classic', 'asynchronous' Replication based Solution, fully integrated
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MySQL InnoDB Cluster
• "A single product — MySQL — with high availability and scaling features
baked in; providing an integrated end-to-end solution that is easy to use."
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MySQL Group Replication – The core component
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MySQL InnoDB Cluster – Use Cases
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MySQL Router
Transparent Access to Database Arch.
– "provide transparent routing between your application and back-end
MySQL Servers"
• Transparent client connection routing
– Load balancing
– Application connection failover
– Little to no configuration needed
• Stateless design offers easy HA client routing
– Router as part of the application stack
• Integration into InnoDB Cluster & InnoDB ReplicaSet
– Understands Group Replication & Replication topology
• Currently TCP Port each for PRIMARY and NON-PRIMARY traffic
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MySQL InnoDB Cluster & ReplicaSet
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MySQL ReplicaSet
• Fully integrated MySQL Router
– Automatic Routing
• Ease of use with MySQL Shell
– Configuring, Adding, Removing members
– Automatic Member Provisioning (CLONE)
• Replication Architecture:
– (manual) Switchover & Failover
– (asynchronous) Read Scaleout
– 'Simple' Replication architecture:
• no network/hardware requirements
• Providing Availability on PRIMARY when issues with secondaries or network
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Ease Of Use
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MySQL Connector
Application
MySQL Router
MySQL Connector
Application
MySQL Router
MySQL Shell
MySQL Connector
Application
MySQL Router
MySQL Connector
Application
MySQL
InnoDB
cluster
MySQL Enterprise Monitor
…
mysql-js> cluster.status()
{
"clusterName": “NewAppCluster",
"defaultReplicaSet": {
"status": "Cluster tolerant to up to ONE failure.",
"topology": {
“hanode1:3306": {
"address": “hanode1:3306",
"status": "ONLINE",
"role": "HA",
"mode": "R/W",
MySQL InnoDB Cluster: Architecture
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MySQL Router

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Deployment Examples
MySQL InnoDB Cluster
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https://dev.mysql.com/doc/refman/8.0/en/mysql-innodb-cluster-production-deployment.html

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Single Data Center
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Active Data Center
ClusterDC1
MySQL
Router
MySQL
Router
MySQL
Router
MySQL InnoDB Cluster
MySQL
Shell
MySQL
Enterprise
Monitor

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DC1 ➔ DC2
MySQL InnoDB Cluster Deployment
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Async Replication
Active Data Center Backup Data Center
ClientsClusterDC1 ClusterDC2
MySQL
Router
MySQL
Router
MySQL
Router
MySQL
Enterprise
Monitor
MySQL
Shell
MySQL
RouterMySQL
Router
MySQL
Router
MySQL
Router

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DC1 ➔ DC2
MySQL InnoDB Cluster Deployment
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Async Replication
Active Data Center Backup Data Center
ClientsClusterDC1 ClusterDC2
MySQL
Router
MySQL
Router
MySQL
Router
MySQL
Router
MySQL
Router
MySQL
Enterprise
Monitor
MySQL
Shell
Load Balancer Load Balancer

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Machine 1
Machine 2
Machine 3
Machine 4
Deployment Sample Illustration
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Active Data Center
ClusterDC1
MySQL
Router
MySQL
Router
MySQL
Router
MySQLInnoDBCluster
MySQL
Shell
MySQL
Enterprise
Monitor
MySQLInnoDBCluster
MySQLInnoDBCluster
DataCenter2
Replication

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Summary
• MySQL High Availability
– MySQL Replication
• Asynchronous Replication
• Semi-Sync Replication
– MySQL InnoDB Cluster
• Group Replication + MySQL Router + MySQL Shell
• Deployment Practices
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