managed mysql service
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Managed MySQL [email protected]
Managed MySQL Service
Relational Data Store for Services• Fully Managed• Simple to Deploy• Easy to Scale• Reliable
Managed MySQL Service
Sounds like Amazon RDS: Why build our own?• Fails over quite often• Provisioning:
• Instance Size, Storage, PIOPs, Parameter Groups
• Limited to MySQL v5.1, v5.5, and v5.6• Performance Metrics• Replication• Migrations/Upgrades• Amazon Service
Managed MySQL Service
Build Our Own• Back-end persistent Relational data store• High Availability• Scalable• In House Service
Managed MySQL Service
Relational Database Management System (RDBMS)• Percona MySQL
• Experience• Master-Master with Slaves• Uptime
• Percona XtraDB Cluster• Synchronous Replication• Multi-Master with Slaves
Managed MySQL Service
HAProxy• One port for Writes
• Pointed to a single node• Fail over to another single node
• One port for Reads• Pointed to multiple nodes• Fail over to available nodes
• Xinetd checks for available MySQL nodes
Managed MySQL Service
AWS Elastic Load Balancer• Multiple Availability Zones• Cross zone load balancing enabled• HTTP health check on HAProxy servers• AWS Service
Managed MySQL Service
Managed MySQL Service
How does it work?• A database is created in the cluster• Users are created for each database
• DDL user for Drop/Create objects• DML user for Insert/Update/Delete• RO user for read-only queries
• A single node is designated as the “writer” for each database
• All other nodes are designated as “readers” for each writer database
Managed MySQL Service
Managed MySQL Service
Backup/Restore• Backup Server• Nightly Backups• MySQL Binlogs• Snapshots
Managed MySQL Service
Failover• AWS ELB -> HAProxy -> Percona XtraDB
Cluster• Lose a node: HAProxy, Percona XtraDB
Cluster, ELB• Lose an Availability Zone• Region?
Managed MySQL Service
Monitoring• Python Diamond• Librato/PagerDuty• Mysql-proxy
• Small percentage of all traffic• Full query logging• Pushed to ELK
Managed MySQL Service
Relational Data Store for Services• Fully Managed• Simple to Deploy• Easy to Scale• Reliable
