Introduction to devops
- 2. SOFTWARE DEVELOPMENT Software Development Life Cycle (SDLC) is a process used by the software industry to design, develop and test high quality software’s. The SDLC aims to produce a high-quality software that meets or exceeds customer expectations, reaches completion within times and cost estimates. SDLC is the acronym of Software Development Life Cycle. It is also called as Software Development Process. SDLC is a framework defining tasks performed at each step in the software development process. • ISO/IEC 12207 is an international standard for software life-cycle processes. It aims to be the standard that defines all the tasks required for developing and maintaining software.
- 4. SDLC MODELS Waterfall Model Iterative Model Spiral Model V-Model Big Bang Model
- 7. INTRODUCTION TO DEVOPS • What is DevOps • Understanding of DevOps lifecycle • DevOps Principles • Why is DevOps is Needed • Ingredients of DevOps
- 8. WHAT IS DEVOPS • DevOps is a culture which promotes collaboration between Development and Operations Team to deploy code to production faster in an automated & repeatable way. • The word 'DevOps' is a combination of two words 'development' and 'operations.’ • DevOps helps to increases an organization's speed to deliver applications and services. It allows organizations to serve their customers better and compete more strongly in the market.
- 9. UNDERSTANDING OF DEVOPS LIFECYCLE • Development: In this DevOps stage the development of software takes place constantly. In this phase, the entire development process is separated into small development cycles. This benefits DevOps team to speed up software development and delivery process. • Testing: QA team use tools like Selenium to identify and fix bugs in the new piece of code. • Integration: In this stage, new functionality is integrated with the prevailing code, and testing takes place. • Deployment: In this phase, the deployment process takes place continuously. It is performed in such a manner that any changes made any time in the code, should not affect the functioning of high traffic website. • Monitoring: In this phase, operation team will take care of the inappropriate system behavior or bugs which are found in production.
- 10. DEVOPS PRINCIPLES • Here, are six principles which are essential when adopting DevOps: • Customer-Centric Action • End-To-End Responsibility • Continuous Improvement • Automate everything • Work as one team • Monitor and test everything
- 11. WHY IS DEVOPS IS NEEDED • Before DevOps, the development and operation team worked in complete isolation. • Manual code deployment leads to human errors in production • Other Important reasons: • Predictability: DevOps offers significantly lower failure rate of new releases • Reproducibility: Version everything so that earlier version can be restored anytime. • Maintainability: Effortless process of recovery in the event of a new release crashing or disabling the current system. • Time to market: DevOps reduces the time to market up to 50% through streamlined software delivery. • Cost Efficiency: DevOps offers cost efficiency in the software development process which is always an aspiration of IT companies' management.
- 12. Old Process DevOps After placing an order for new servers, the Development team works on testing. The Operations team works on extensive paperwork as required in enterprises to deploy the infrastructure. After placing an order for new servers Development and Operations team work together on the paperwork to set-up the new servers. This results in better visibility of infrastructure requirement. Projection about failover, redundancy, data center locations, and storage requirements are skewed as no inputs are available from developers who have deep knowledge of the application. Projection about failover, redundancy, disaster recovery, data center locations, and storage requirements are pretty accurate due to the inputs from the developers. Operations team has no clue on the progress of the Development team. Operations team develop a monitoring plan as per their understanding. In DevOps, the Operations team is completely aware of the progress the developers are making. Operations team interact with developers and jointly develop a monitoring plan that caters to the IT and business needs. They also use advance Application Performance Monitoring (APM) Tools Before go-live, the load testing crashes the application. The release is delayed. Before go-live, the load testing makes the application a bit slow. The development team quickly fixes the bottlenecks. The application is released on time.
- 13. DEVOPS LIFECYCLE
- 14. DEVOPS AUTOMATION TOOLS • Infrastructure Automation: AWS • Configuration Management: Ansible, Chef, Puppet • Deployment Automation: Jenkins • Performance Management: App Dynamic • Log Management: Splunk • Monitoring: Nagios
- 15. WHO IS A DEVOPS ENGINEER? • A DevOps Engineer is an IT professional who works with software developers, system operators, and other production IT staff to administer code releases. • DevOps should have hard as well as soft skills to communicate and collaborate with development, testing, and operations teams. • A DevOps engineer will work with development team staff to tackle the coding and scripting needed to connect elements of code, like libraries or software development kits.
- 16. ROLES, RESPONSIBILITIES, AND SKILLS OF A DEVOPS ENGINEER • Able to perform system troubleshooting and problem-solving across platform and application domains. • Manage project effectively through open, standards-based platforms • Increase project visibility thought traceability • Improve quality and reduce development cost with collaboration • Analyze, design and evaluate automation scripts & systems • Ensuring critical resolution of system issues by using the best cloud security solutions services • DevOps engineer should have the soft skill of problem-solver and quick-learner
- 17. THANK YOU •Q & A Session