1. Devops :Getting started

Devops is a cultural practice by developers and operational team to use each other's tool,to smooth out the process of software delivery.

Core values
Core Ideas
Methods

Why Devops?
Agile methodology concerns about software methods,it doesn't cover server maintenace.

Devops covers these points:

Deploy faster - 50%
Less failure
Better recovery time

Team is in sync with each other.

Devops CAMS

1. C - Culture
   talk to each other
   people over process over tools

2. A - Automation
   Automate process and do we really need to do it?

3. M - Measurement
   Measure to improve
   Replicate the stuff
   Cloudwatch monitor
   Measurement of client activity and take action on that.

4. S - Sharing
   Share responsibilty,ownership ,feedback loop is important.

Devops follow three basic steps:

1. Flow thinking
   What is already happening,or in process.

2. Amplify feedback
   We get feedback from ops team timely.

3. Experiment and learn
   New tool in launch and work

So basically,we have code,test,deploy under operation.

Dev team : plan,code,build and test

Ops team : release,deploy,operate and monitor

Some basic terminology to rememeber before getting started:

• Provisioning
  Server is ready with OS,software and networking.

• Deployment
  Adding or upgrading software on server

• Orchestration
  Coordinated operations on multiple systems.

• Configuration management
  Managing server configuration via files such as RAM,space,dependency software etc

• Imperative(Procedural)
  Commands to produce desired state

• Declarative(Procedural)
  Desired state is defined and tools will achieve it

• Idempotent
  Repeat execution and same result

• Blue Green deployment
  Identical deployment,used as switch

• Continuous Integration
  Build and unit test at every checkin

• Continuous Delivery
  Deploy on production live environment at every checkin

• Continuous Deployment
  After unit testing,deploy changes to production in small patches.

Thanks,
Rupa kumari