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Jonathan Rudenberg
Automating MongoDB Clusters Jonathan Rudenberg @"tanous Flynn - - PowerPoint PPT Presentation
Automating MongoDB Clusters Jonathan Rudenberg @"tanous Flynn - - PowerPoint PPT Presentation
Automating MongoDB Clusters Jonathan Rudenberg @"tanous Flynn is an easy PaaS Flynn git push and Docker deploys HTTPS load balancing Log aggrega<on Everything is highly available Flynn TCP load balancing Service discovery with DNS
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Flynn
git push and Docker deploys HTTPS load balancing Log aggrega<on Everything is highly available
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Flynn
TCP load balancing Service discovery with DNS Self-bootstrapping and self-hos<ng Database appliances
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Databases are hard.
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Best prac<ces are expensive.
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One command to get a reliable database cluster without talking to a DBA
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Produc<on parity Infrastructure portability Self-serve access
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Safe out of the box Clusters not singletons Easy management
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PostgreSQL
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PostgreSQL MySQL
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State Machine
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P S A
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github.com/joyent/manatee-state-machine
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PostgreSQL MySQL MongoDB
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P S A
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P S A
priority:0 hidden priority:1 priority:0
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S
priority:0
P
priority:1
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discoverd
Peer discovery Compare and swap service metadata Leader registra<on HTTP/DNS
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leader.mongodb.discoverd:27017
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MongoDB bugs
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Replica set reconfigura<on implosion
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if (args.force) { incrementVersionByRandom(config); }
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Demo
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flynn.io | @<tanous
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flynn resource add mongodb
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MONGO_DATABASE=b5cf103f4f2a1446104a275ebb7aa7af MONGO_HOST=leader.mongodb.discoverd MONGO_PWD=381b4fa2c05073b88ac7b061d06da2ee MONGO_USER=c3fd8b67fef657dcb4074cb409a77e32
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flynn mongodb dump
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flynn mongodb mongo
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Primary handles reads/writes Sync can take over for primary Async can transi6on to sync Unassigned Deposed
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Primary → Deposed Sync → Primary Async → Sync Unassigned → {Primary, Sync, Async} Deposed
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Genera<on number Current primary Assigned sync Ini<al WAL Async list
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Components
(HTTP, TCP, TLS, Load Balancing) ROUTER
(Runs containers)
DATABASE APPLIANCES LOG AGGREGATOR CONTROLLER SCHEDULER SERVICE DISCOVERY HOST SERVICE DEPLOY HEALTH SERVICE USER APPS USER APPS USER APPS USER APPS USER APPS
Git Receiver Slugbuilder Blobstore
WEB DASHBOARD
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DB A A A A A A DB A A A A F F F A A DB DB A A A A A A A A F F F A A A A DB A A A A A A DB F F F