Devops

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Devops

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Definition of DevOps

• DevOps is a new term emerging from the collision
  of two major related trends. The first was
  also called agile infrastructure or agile
  operations it sprang from applying Agile and
  Lean approaches to operations work. 
• The second is a much expanded understanding of
  the value of collaboration between development
  and operations staff throughout all stages of the
  development lifecycle when creating and operating
  a service, and how important operations has
  become in our increasingly service-oriented world.

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What Are the Challenges DevOps Solves?

• Prior to DevOps application development, teams
  were in charge of gathering business requirements
  for a software program and writing code.
• Then a separate QA team tests the program in an
  isolated development environment, if requirements
  were met, and releases the code for operations to
  deploy.
• The deployment teams are further fragmented into
  siloed groups like networking and database. Each
  time a software program is thrown over the wall
  to an independent team it adds bottlenecks.

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What Is the Goal of DevOps?

• Improve deployment frequency
• Achieve faster time to market
• Lower failure rate of new releases
• Shorten lead time between fixes
• Improve mean time to recovery

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DevOps Tools

• Nagios
•  Monit
•  Puppet
•  Jenkins
• Docker
•  Ansible
•  Chef

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Phases of DevOps Maturity1.Waterfall Development

• Before continuous integration, development teams
  would write a bunch of code for three to four
  months. Then those teams would merge their code
  in order to release it. The different versions of
  code would be so different and have so many
  changes that the actual integration step could
  take months. This process was very unproductive.

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2.Continuous Integration

• It is the practice of quickly integrating newly
  developed code with the main body of code that is
  to be released. Continuous integration saves a
  lot of time when the team is ready to release the
  code.
• DevOps didnt come up with this term. It is an
  agile engineering practice originating from the
  Extreme Programming methodology.
• The terms been around for a while, but DevOps has
  adopted this term because automation is required
  to successfully execute continuous integration.
  Continuous integration is often the first step
  down the path toward DevOps maturity.

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3. Continuous Delivery

• It is an extension of continuous integration
  DevOps stage 2. It sits on top of continuous
  integration.
• When executing continuous delivery, you add
  additional automation and testing so that you
  dont just merge the code with the main code line
  frequently, but you get the code nearly ready to
  deploy with almost no human intervention.
• Its the practice of having the code base
  continuously in a ready-to-deploy state.

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4. Continuous Deployment

• It not to be confused with continuous delivery
  DevOps nirvana, is the most advanced evolution
  of continuous delivery.
• Its the practice of deploying all the way into
  production without any human intervention.

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An agile approach

• People teammates, customers, and interactions
  between these people instead of processes and
  tools
• Immediacy Working software instead of
  comprehensive documentation
• Flexibility Responding to, and even embracing,
  change instead of following a predetermined
  plan

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Rolls of Devops

• The DevOps evangelist
• The release manager
• The automation architect
• The software developer/tester
• The experience assurance (XA) professional
• The security engineer
• The utility technology player
• These rolls will be learn by Devops Training in
  Chennai

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Devops _at_ Greens Technologys

• Agile DevOps Training in Chennai by Certified
  Professionals. Become an expert DevOps engineer
  from Best DevOps Training Institute in
  Chennai with the most experienced and DevOps
  certified expert trainers in the field.
• Greens Technology provides DevOps training and
  certification in Chennai to professionals and
  corporates on Deployment and automation using
  devops tools - Chef, Docker, Puppet, Ansible,
  Nagios, Git, TestNG, SonarQube, Jenkins, and
  Project Object Model (POM) in Maven.
• We offer DevOps job assistance (subject to
  project availability and partner requirements)
  for positions in India, Singapore, Dubai and the
  UK.

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• For any details you know please visit
  http//www.greenstechnologys.com/