This document discusses using Ops Manager, Cloud Manager, and Ansible to automate and relieve the pain of manually managing MongoDB deployments at scale. It introduces the tools, compares their capabilities, and demonstrates how Ansible playbooks can be used to deploy Ops Manager agents across multiple servers. The key points are: - Ops Manager, Cloud Manager, and Atlas provide automated MongoDB management but differ in capabilities and where deployed. - Ansible can be used with these tools to further automate configuration and relieve operational overhead through playbooks and modules. - A demo shows how an Ansible playbook deploys Ops Manager agents to multiple servers with simple commands.

1. MongoDB
Pain Relief
Michael Lynn
Sr. Solutions Architect, MongoDB
@mlynn, @phillyMUG
michael.lynn@mongodb.com
OpsManager
OpsManager
Relieving the pain associated with manually
managing your large-scale MongoDB estate.

2. Goals
• Ops Manager, Cloud Manager, Atlas
– What are they?
– How do they differ?
– Why do I need them?
• Ansible
– What is it and how can I use these tools to relieve some
pain in my life?

3. Show of
Hands
• Who’s Here?
– DevOps/Ops?
– Site Reliability?
– Engineer?
– DBA?
– Developer?

4. Admin
Evolution
3. Puppet, Salt,
Ansible
Leveraging automated solution for
config mgt, some cloud deployment.
1. Manual
Download by hand, build server from
CD, Manually Start and Config Services.
2. Scripting
Write scripts to maintain
configurations, copy those to
servers and run them.
4. Cloud/Hybrid
Automation
Full Cloud-based pro-
visioning and
management

5. Managing databases manually can be...
• Painful
• Risky
• Complex
• Susceptible to
human error*
• Unnecessary...
* 80% of all downtime due to people/process error (Gartner)

6. What’s involved in managing MongoDB?
● Provision / Deploy
● Install/Upgrade Binaries
● Configure Database
● Administer Database
Deploying 42
42
Upgrading 35
70
Maintaining 23
100
Play Top 3 Things DBA’s Hate to Do Manually?

7. So… what does it take (at scale)?
It can take a lot of manual effort to care for a MongoDB
system in production
● Install + Configure
○ 150+ steps
● Scale out, move servers, resize oplog, etc
○ 10 - 180+ steps
● Upgrades, downgrades
○ 100+ stepsUpgrade
Deploy
Maintain
Up to 95%
Reduction in
Operational
Overhead

8. • Single-click provisioning, scaling &
upgrades, admin tasks!
• Monitoring, with charts, dashboards
and alerts on 100+ metrics
• Backup and restore, with
point-in-time recovery, support for
sharded clusters
MongoDB Ops Manager
The Best Way to Manage MongoDB In Your Data Center
Up to 95% Reduction in Operational Overhead

9. • Single-click provisioning, scaling &
upgrades, admin tasks!
• Monitoring, with charts, dashboards
and alerts on 100+ metrics
• Backup and restore, with
point-in-time recovery, support for
sharded clusters
MongoDB Cloud Manager
The Best Way to Manage MongoDB In The Cloud
Up to 95% Reduction in Operational Overhead

10. • Scalable back-end for your
application on-demand
• Secure by default
• Highly available, even while scaling
• Patch maintenance performed for
you
• Your own MongoDB cluster in the
cloud
MongoDB Atlas
MongoDB’s Database as a Service

11. OpsManager Demo
http://ec2-54-162-176-239.compute-1.amazonaws.com:8080
This finds and
leverages servers
where you’ve already
installed the
automation agent

12. This provisions hosts
AND deploys the
automation agents.

13. OpsManager Demo

14. 1
2
Group/RBAC
Logical/Physical
3 Replica Set Members
3 MongoDB Version

15. 1Add Replica Set

16. 1Repset Name
2Version of MongoDB
3Server Pool Hostnames
4Port to Run MongoDB

17. 1Member Roles
2DB Path on Server
3Advanced Options Settings
4CLICK APPLY

18. Activity
Deploy Server Instance
Upgrade (Done For You)
Configure
Administer Database
Maintain OS - Mongod
Maintain OS - OpsMgr
Activity
Deploy Server Instance
Upgrade MongoDB
Configure MongoDB
Administer Database
Maintain OS - Mongod
Maintain OS - OpsMgr
Activity
Deploy Server Instance
Upgrade MongoDB
Configure MongoDB
Administer Database
Maintain OS - Mongod
Maintain OS - OpsMgr
Ops
Manager
Cloud
Manager Atlas
CONTROL CONVENIENCE

19. MongoDB Enterprise Server
MongoDB Enterprise Advanced24x7Support
CommercialLicense
Platform
Certifications
Emergency
Patches
On-Demand
Online Training
Customer
Success
Program
MongoDB CompassMongoDB Ops Manager
Monitoring &
Alerting
Query
Optimization
Backup &
Recovery
Automation &
Configuration
Schema
Visualization
Data Exploration
Ad-Hoc Queries
MongoDB Connector for
BI
Visualization
Analysis
Reporting
LDAP & Kerberos Auditing FIPS 140-2Encryption at Rest
REST API

20. MongoDB Deployment - Ops Manager
Configure Host
Provision Host
Configure
Agent
1. AWS 2. New Host 3. Ops Manager
Install OM
Agent
Restart Agent
Install
MongoDB
Configure
Monitoring
Configure
Backups
Configure Host
Provision Host
Configure
Agent
Install OM
Agent
Restart Agent
Install
MongoDB
Configure
Monitoring
Configure
Backups
2. New Host 3. Ops Manager1. AWS
More?
More?

21. http://ec2-54-162-176-239.compute-1.amazonaws.com:8080

22. MongoDB Deployment - Cloud Manager & Atlas
Configure Host
Provision Host
Configure
Agent
Install OM
Agent
Restart Agent
Provision New
Hosts
Configure
Monitoring
Configure
Backups
AWS New Host Ops Manager
Provision New
Hosts
Configure
Monitoring
Configure
Backups
1. Cloud / Atlas

23. This provisions hosts
AND deploys the
automation agents.

24. MongoDB Deployment - Ops Manager
Configure Host
Provision Host
Configure
Agent
1. AWS 2. New Host 3. Ops Manager
Install OW
Agent
Restart Agent
Install
MongoDB
Configure
Monitoring
Configure
Backups
Configure Host
Provision Host
Configure
Agent
Install OW
Agent
Restart Agent
Install
MongoDB
Configure
Monitoring
Configure
Backups
2. New Host 3. Ops Manager1. AWS
Candidate
for
Automation?

26. 26
WHAT IS ANSIBLE?
Confidential
It’s a simple automation language that
can perfectly describe an IT application
infrastructure in Ansible Playbooks.
It’s an automation engine that runs
Ansible Playbooks.
Ansible Tower is an enterprise
framework for controlling, securing
and managing your Ansible
automation with a UI and RESTful API.

27. 27
SIMPLE POWERFUL AGENTLESS
App deployment
Configuration management
Workflow orchestration
Orchestrate the app lifecycle
Human readable automation
No special coding skills needed
Tasks executed in order
Get productive quickly
Agentless architecture
Uses OpenSSH & WinRM
No agents to exploit or update
More efficient & more secure
Confidential

28. 28
ANSIBLE TOWER
CONTROL
SIMPLE POWERFUL AGENTLESS
KNOWLEDGE DELEGATION
TOWER EMPOWERS TEAMS TO AUTOMATE
AT ANSIBLE’S CORE IS AN OPEN-SOURCE AUTOMATION ENGINE
Scheduled and
centralized jobs
Visibility and
compliance
Role-based access
and self-service
Everyone speaks the
same language
Designed for
multi-tier deployments
Predictable, reliable,
and secure
Confidential

29. Getting Started with Ansible - Lexicon
• Commands
– ansible, ansible-playbook
• Configuration
– ansible.cfg
• Modules
– Hundreds of stand-alone scripts to solve common requirements
• Plays, Playbooks
– The execution tools to carry out your management tasks
• Tasks
– The components that connect ansible to the servers

30. Why Ansible?
• Simple
• Human Readable
• Agentless (uses SSH)
• Popular - Lots of Modules
• Used by Twitter, NASA, Spotify

31. Demo of Ansible

32. Follow Along
• Git (or download)
– git clone http://github.com/mrlynn/ansible-demo
– Thank you Torsten Spindler
• Ansible
– brew install ansible
• Pipe Viewer (optional)
– Simulates typing
• AWS->EC2
– Keys Set Up

33. Post-Demo Check-in
• Atlas
– DBaaS
– Deploys new MongoDB Clusters from zero to cluster in minutes.
• Ops Manager
– Automation for all the things you do with MongoDB - except deploying the agent.
• Ansible
– Automation for configs, deployment and more - especially deploying O/M Agents
I hope you learned some ways you can relieve the pain associated with manually
configuring, deploying and maintaining your database environment.

34. Questions?
Get These Scripts and Slides:
http://github.com/mrlynn/ansible-demo

35. 1 - Ansible Configuration Files

36. 2 - Ansible Hosts File

37. 3 - Ansible Modules - Ping

38. 4 - Ansible Environment Variables

39. 5 - Ansible Modules - Script

40. 6 - Ansible Playbooks

41. 7 - Deploying O/M in Playbooks

42. BONUS
SLIDES!
• Slides probably
not used in the
presentation.

43. Replica Set Architecture (w/ Ops Manager)
43
APP SERVER
APPLICATION
DRIVER
OPS MANAGER
OM APP
APP BACKUP
REPLICA SET
PRIMARY
SECONDARY SECONDARY
OM
AGENT
OM
AGENT
OM
AGENT

44. Demonstration Setup
Command Description
ansible -m ping -i ansible-hosts all Using the ping module and the hosts file
ansible-hosts in the current directory,
ping all hosts
export ANSIBLE_HOSTS=./ansible_hosts Save some time - ansible uses
environment variables extensivel
ansible -m ping all Same as before - but now ansible
leverages the env var to find the ansible
hosts file.

45. Demonstration
Command Description
ansible -m script test.sh all Here, we take a local script and execute
it across all of our hosts. Ansible takes
that script and delivers it via scp to the
hosts, executes it and captures the
output.
export ANSIBLE_HOSTS=./ansible_hosts Save some time - ansible uses
environment variables extensivel
ansible -m ping all Same as before - but now ansible
leverages the env var to find the ansible
hosts file.

46. Appendix A - /etc/ansible/hosts sample
[opsManager]
ec2-54-93-114-205.eu-central-1.compute.amazonaws.com ansible_user=ec2-user
[amlReplicaSet]
ec2-54-93-79-122.eu-central-1.compute.amazonaws.com ansible_user=ec2-user
ec2-54-93-176-246.eu-central-1.compute.amazonaws.com ansible_user=ec2-user
ec2-54-93-207-148.eu-central-1.compute.amazonaws.com ansible_user=ec2-user
[amlReplicaSet:vars]
opsmanagerurl=http://ec2-54-93-114-205.eu-central-1.compute.amazonaws.com:8080
opsmanager=ec2-54-93-114-205.eu-central-1.compute.amazonaws.com

47. Appendix B - ansible.cfg
[defaults]
host_key_checking = False
private_key_file = PATH/TO/AWS/KEY.FILE
[ssh_connection]
control_path = %(directory)s/%%C