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DESCRIPTION
MongoDB Management Service makes operations effortless, reducing complicated tasks to a single click. You can now provision machines, configure replica sets and sharded clusters, and upgrade your MongoDB deployment all through the MMS interface. This session will introduce you to the engineering team at MongoDB building the automation functionality in MMS. We'll walk through demos of all the new MMS features, including provisioning, expanding and contracting a cluster, resizing the oplog, and managing users.
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Run MongoDB with Confidence using MMS
Cailin Nelson
#mongodb #mongodbdays
@cailinanne
VP Engineering, MMS, MongoDB
What is MMS?
What WAS the MongoDB Management Service?
• Two weeks ago, the MongoDB Management Service was a web-based tool that allowed you to Monitor and Backup your MongoDB deployment.
• You created your deployment, in any size or shape, then you used MMS to Monitor or Backup your deployment.
What did we change?
• MMS is now a web-based tool that starts with you from the beginning of your MongoDB deployment lifecycle.
• Now you use MMS to build your deployment, and then continue to use MMS to manage its lifecycle (including Monitoring and Backup!)
Why the change?
1. MMS was arriving in the user’s life a little “late to the party”. Mistakes had already been made. User might already some misconceptions or frustrations with MongoDB.
2. Previous version of MMS could monitor critical operations (maintenance, upgrades, etc.), but not actually help!
And run a very large MongoDB deployment of their own!
MongoDB DatacenterCustomer Datacenter
MMS Agent
HTTPS
HTTPS
Onboarding Demo
MMS Monitoring
Topology
Charting
Alerting
Proactive Support
MongoDB offers Proactive Support for Subscription Customers. Our
engineers can monitor your deployment and make suggestions in
order to tweak for better performance or avoid doom.
MMS Backups
Risks Are Everywhere
Storage failures
Power outages
Programmer error
Hardware failures
AWS Mandatory
Reboots
Datacenter failures
Cyber attacks Weather
Replication
• Redundant copies of your data across– Servers– Racks– Data Centers
• Automatic failover
• Tunable consistency minimizes risk
• However…programmer errors will replicate almost immediately!
Backups
Backing up data is one way to ensure availability and lower risk. Effort is required to ensure that your backup system is always running and that the backups are correct.
MongoDB Backup Approaches
mongodump File system MMS Backup
Initial complexity
Medium High Low
Confidence in Backups
Medium Medium High
Point in time recovery of replica set
Sort of ☺ No Yes
System Overhead
High Can be low Low
Scalable No With work Yes
Consistent Snapshot of Sharded System
Difficult Difficult Yes
Queryable Backups Demo
MMS Maintenance Operations
The Process
• Applies to upgrades and most maintenance tasks
• Careful order of steps is critical– Especially in sharded clusters!
• For each shard/replica set– For each replica set member
• http://docs.mongodb.org/manual/tutorial/perform-maintence-on-replica-set-members/
Step 1 – Stop A Secondary
Step 2 – Restart As Standalone
Step 3 – Perform Maintenance
Step 4 – Restart As Member of Replica Set
Step 5 – Work on Primary Last
Demo
Operations
• Upgrade/Downgrade
• Add replica member
• Add shard
• Remove shard
• Resize oplog
Resources
• MMS– mms.mongodb.com– mms.mongodb.com/help
• MMS On-Premise– Available for evaluation– mms.mongodb.com/help-hosted
Thank You
Kelly Stirman
#mongodb #mongodbdays
@kstirman
Director of Products, MongoDB
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