Back to Basics Webinar 6: Production Deployment
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This is the final webinar of a Back to Basics series that will introduce you to the MongoDB database. This webinar will guide you through production deployment.
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Back to Basics Webinar 6: Production Deployment
- 1. MongoDBEurope2016 Old Billingsgate, London 15th November mongodb.com/europe Register with code JD20 for a 20% discount
- 2. Back to Basics 2016 : Webinar 6 Production Deployment Joe Drumgoole Director of Developer Advocacy, EMEA @jdrumgoole V1.1
- 3. 3 Recap • Webinar 1 – Introduction to NoSQL – NoSQL Types, MongoDB is a document database • Webinar 2 – My First Application – Creating databases and collections, CRUD, Indexes and Explain • Webinar 3 – Schema Design – Dynamic schema, Embedding approaches • Webinar 4 – GeoSpatial and Text Indexes • Webinar 5 – Introduction to the Aggregation Framework
- 4. 4 Production Deployment • The process of taking a development project and making it available to end users • From a database perspective key concerns: – Durability – Scalability – Data security – General production notes
- 5. 5 Durability – Replica Sets Node 1 Node 2 Node 3
- 6. 6 Replica Set Initialize Node 1 Node 2 Node 3 Node 1 (Primary) Node 2 (Secondary) Node 3 (Secondary) Replication Replication Heartbeat
- 7. 7 Node 2 (Secondary) Node 3 (Secondary) Heartbeat Primary Election Node 1 (Primary) Replica Set - Failure
- 8. 8 Node 1 (Primary) Node 2 (Primary) Node 3 (Secondary) Heartbeat Replication Replica Set - Failover
- 9. 9 Node 2 (Primary) Node 3 (Secondary) Heartbeat Replication Node 1 (Recovery) Replication Replica Set - Recovery
- 10. 10 Node 2 (Primary) Node 3 (Secondary) Heartbeat Replication Node 1 (Secondary) Replication Replica Set - Recovered
- 12. 12 Node 1 (Primary) Node 2 (Secondary) Node 3 (Secondary) Application Driver Read and write Strong Consistency
- 13. 13 Node 1 (Primary) Node 2 (Secondary) Node 3 (Secondary) Application Driver Strong Consistency Read Read Read and write
- 14. 14 Write Concern • Controls the level of acknowledgement a write operation will receive • w:0 : Once the packet leaves the driver we are done • w:1 : Return errors generated by the server • w:majority : Ensure write persisted to a majority of the replica set members • Journaling • j:false : Writes do not need to persist to the journal • j:true : Writes must persist to the journal
- 19. Sharding
- 22. Sharded Cluster mongos mongos mongos Primary Secondary Secondary Primary Secondary Secondary Primary Secondary Secondary Primary Secondary Secondary Primary Secondary Secondary App Driver Config Server
- 23. 23 Setting Up Replica Sets And Sharded Clusters • Simplest – our management, our servers – MongoDB Atlas • Slightly More Complicated – cloud management - your servers – MongoDB Cloud Manager • More Complicated Again – on premise management – your servers – MongoDB Ops Manager • Hardest – Do it all yourself with scripts and manual steps – see docs for details
- 24. 24 Data Security – Defense in Depth • Use SSL for all connections • Setup up users, passwords and access roles for all databases • Use encryption on disk for credit card and/or personally identifiable information • Turn on audit if you need to to keep track of who is changing what • Make sure your monitoring is enabled for all nodes to identify unusable information • Don't make your databases globally accessible
- 25. 25 General Production Notes • Use the most recent release of MongoDB and keep it patched (64 bit builds only in production) • Use the Wired Tiger storage engine (its our default and will ensure great performance) • Configure the appropriate Write Concern • Configure the connection pool for the server to match the load • Make sure you have sufficient RAM and CPU for the workload you are expecting • Prefer SSDs • Disable NUMA ( Non Uniform Memory Access) • Allocate SWAP space (otherwise on Linux the OOM daemon may kill you) • Review Wired Tiger compression options, none, snappy, zlib (snappy is the default) • If you are using RAID, RAID10 is the recommended configuration • Use the XFS file system if possible for better performance • Use a noop scheduler for virtual devices when using VMs • Synchronise time on all cluster members with NTP • Turn off the "atime" option for the file-system storing database files • Increase the file descriptor limit • Avoid NFS file-systems or file systems that provide underlying replication (SANs)
- 26. 26 Before You Go Live • Talk to us • Get a health check • Use our automated tools Most production problems happen because the customer tried to go it alone
- 27. Q&A
Editor's Notes
- Who I am, how long have I been at MongoDB.
- The data we write stays written and can survive disk, rack, power and data centre failures. Is resilient to underlying data corruption.
- Rs.initalise, election, primary defined. Heartbeat.
- For wired tiger memory is controlled by storage.wiredTiger.engineConfig.cacheSizeGB