DevOps Services description and company overall experience

1. DevOps Services
PREPARED BY:
Mykola Zolotarov
DevOps Engineer
30 July
2015

2. Case: Automated tests with CI server
● Run tests based on scheduler
● Single point of reports and analyzing
● Notifications
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3. CI Jenkins
Terminology
3
Slave
Executes tasks (jobs)
Generates reports
Master
Provides WEB and API interfaces
Stores tasks (jobs)
Analyses reports, generates
notifications

4. CI Jenkins
Architecture
4
Master
Slave Slave Slave
● Run multiple tasks in parallel
● Run tasks in different geographical locations
● High available in case of slave node failure

5. CI Jenkins
Architecture
Master
● Master uses minimum resources, no licence needed
● Utilize maximum resources of windows machine with
multiple slaves
Slave
RDP
Slave
RDP
Slave
RDP
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6. CI Jenkins
Architecture
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Master ● Utilize all possible hosting platforms

7. Case: Infrastructure improvements
Client: SavvyMoney (CA, USA) company providing financial management services. There are
several different web applications and environments.
Problem statement:
● Increasing total cost of ownership (TCO)
● Low SLA because of environmental problems
● Manually configured machines and services
● Poor hardware/software monitoring
Approach:
● Automatic fault tolerance
● Automatic application scaling
● Automatic configuration and server provisioning
● Automatic application deployments
● Security
● Continuous monitoring and notifications
● Backup and restore strategies
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8. Infrastructure before improvements
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db1 db2
clients
app1 app2 app3
● Numerous points of failure
● Cost ineffective
● Unreliable
● Manually configured
● Only vertical scaling is possible
● Security issues
frontend server
mgmt

9. Infrastructure after improvements
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app1 sg
app2 sg
app3 sg
frontend sg
load
balancers
clients mgmt
db1 db1r
db2 db2r
ACS monitoring CI
bastion
DMZ

10. High Availability (HA)
Automatic fault tolerance
Goals:
● No single point of failure
● Two small are always better than one large
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11. Automatic scaling
Cost saving and effectiveness
Goals:
● Increase number of running machines on high load to get more capacity
● Reduce number of machines when load decreases to save money
11
Without autoscaling With autoscaling

12. Automatic server configuration
● Automatically deploy and track services
● Define desired state of infrastructure,
not the way how to configure it
● Manage infrastructure from single point
● Keep infrastructure as code:
DevOps Engineer
Configuration
Server
node 'www1.example.com' {
package{‘nginx’:
ensure => installed
}
file {‘nginx.conf’:
content =>
template(“nginx/nginx.conf.erb”)
}
}
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13. Continuous development & deployment
Build
Test
Deploy
Commit
code to VCS
Pull
Changes
CI Server
Checkout
Developers
Send notification
Deploy to
repo
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Run
automated
tests

14. Real-time system health monitoring
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● Realtime stats
● Hardware monitoring
● Software monitoring
● Notifications & Alerts

15. Advantages of DevOps services
● SLA > 99.95%
● Up to 30% of TCO savings
● Flow automation
● Cost effective environments
● Reliable infrastructure
● Automatically configured instances
● Horizontal auto scaling
● Advanced Security
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