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DEVOPS / SELF-
SERVICE
APPROACH



                 1
DevOps




         2
WHY DEVOPS?


         Business process

                                  Product
          Dev               Ops
                   QA




  Idea




                                        3
WHY DEVOPS?




          Dev
                     Ops   Product




  Idea          QA




                                 4
DEVELOPERS AND OPERATIONS

   Developers        Infrastructure team

   Quick changes            Stability
   Agile processes      Static processes




                                           5
DEVOPS IS NOT:




                  DevOps




     A tool set   A job title




                                6
DEVOPS IS ABOUT CAMS

Culture
Automation
Measurement
Sharing




                       7
DEVOPS IS ABOUT SELF-SERVICE




                               8
COMMON PROCESS
            Request


           Question 1


           Answer 1




                        Help Desk Team
           Question N
                                                    Infrastructure

           Answer N
Engineer




                                           Preparing
                                         Infrastructure

             Result
DISADVANTAGES




 Time-consuming        Resource-consuming




         Unpredictable planning
                                            10
INFRASTRUCTURE AS A CODE




                Request
                           Cloud API
                 Result

     Engineer




                                       11
BENEFITS




   Repeatability       Automation          Scalability




             Agility                Reassurance


                                                         12
Awesome Services




                   13
DEVOPS – THE FLICKR EXPERIENCE




 3 billion photos

 40000 photos per second

 10 deploys per day

 the 4th API by popularity


                                 14
OUR CONTACTS


      SpecialEPM-CITConsulting@epam.com


      http://cloud.epam.com


      https://twitter.com/EPAM_Cloud


      http://epamcloud.blogspot.com/


      https://www.yammer.com/epam.com/

                                          15

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Dev ops self service approach-1.3

Notas do Editor

  1. Здравствуйте, меня зовут %presenter_name%. Я представляю Consulting Team проекта EPAM Cloud Infrastructure.В этой презентации я постараюсь рассказать о том, что из представляет собой методолгияDevOps, как и почему она возникла.
  2. Wikipedia:DevOps (Developers and Operations): методология разработки, при которой разработчики и сисадмины тесно сотрудничают. Она должна помочь ускорить процесс разработки и повысить качество конечного продукта.Разноцветные круги на этой диаграмме – это области знаний. Чтобы получить знания и опыт во всех областях, нужно потратить много лет, людей, которые имеют опыт во всех этих областях, очень мало. DevOps же предлагает дать разработчикам и тестировщикам инструменты управления инфраструктурой, тем самым сократив необходимую область знаний.Почему возникла методология DevOps, и какие преимущества даёт её применение рассмотрим по ходу этой презентации.
  3. Как и почему возникла DevOps?Это реакция на потребности бизнеса.Любой процесс, упрощённо, это идея, которая реализуется и приносит деньги.Процесс разработки ПО полон рисков, конечный продукт часто не выходит в срок, или не соответствует ожиданиям клиента.
  4. Если убрать контекст бизнеса, то увидим несколько групп людей, каждая из которых делает что-то своё.В итоге вы не получите на выходе качественный продукт в срок, что влечёт денежные потери.
  5. Почему вообще из Devи Ops состоит термин DevOps? Разработчику нужно вносить быстрые изменения.Сисадмину же нужно обеспечить бесперебойную и стабильную работу инфраструктуры.Это является следствием того, как обычно строится процесс разработки. На самом же деле у них одна цель – сделать качественный продукт вовремя.
  6. Часто легче сказать, чем DevOps не является.DevOps не:Это не набор инструментовВы не можете сказать «Я DevOps!»DevOps говорит о том, что нужно по-новому взглянуть на сотрудничество всех людей, задействованных в разработке и запуске приложений. Это в первую очередь культурное, а потом уже технологическое движение.
  7. DevOps часто ассоциируется с аббревиатурой CAMS.КультураВ первую очередь нужны изменения культурные, т.е. в применяемых методах и процессах.АвтоматизацияЭто первое, с чего нужно начинать изменения в процессах и культуре при разработке. ИзмерениеЕсли вы не имеете наглядной статистики о процессах, то как вы поймёте, что все идёт так, как надо или наоборот, что все плохо?Обмен знаниями. Это критически важный момент. Когда люди делятся идеями и проблемами с самых первых стадий разработки, это положительно сказывается на результате.
  8. Одно из культурных изменений, о котором говорит DevOps – этоSelf-Service модель.Если каждый может обеспечить себя необходимым окружением и инфраструктурой в любой момент времени, то это даёт огромное ускорение всему процессу. Как это происходит?
  9. Рассмотрим классический пример получения инфраструктуры:Инженеру нужно обратиться в Help Desk, после чего с их стороны будут уточняющие вопросы. После этого запрос выполняется инженерами Help Desk Team. Время, через которое инженер получит нужное ему окружение, может составлять от нескольких минут до нескольких часов и даже дней.
  10. Очевидны минусы такого подхода:Мы тратим время в ожидании, поэтому ресурсы (в том числе и рабочее время инженера) расходуются неэффективно.Предугадать, какое время займёт этот процесс, не возможно, так как это зависит:а) от загрузки Help Desk Teamб) от сложности запросав) человеческий фактор: болезнь, разная степень подготовки персонала.
  11. Если же инфраструктура представляет собой облако и предоставляет API, то мы можем работать с инфраструктурой, как с кодом. Для любого инженера, который использует API любая часть инфраструктуры выглядит как код, с которым можно работать прямо из приложения, скриптов автоматизации и т.д.Представьте себе, если бы каждый раз приходилось делать любое приложение с нуля… Вместо этого используются фреймворки, которые предоставляют API или готовые классы, которые можно использовать как кирпичи для построения приложения. Так же и с инфраструктурой можно работать как с кодом, тем самым мы автоматизируем и ускоряем работу с ней.
  12. Использование методологии DevOps даёт нам множество преимуществ.Так как система строится на основании высокоуровневого кода, она может быть легко повторена, так же как и любые действия, связанные с инфраструктурой могут быть автоматизированы.Повторяемость и автоматизация делает масштабирование более простым и быстрым процессом.Все вышеперечисленное приводит к ускорению всего процесса разработки и запуска приложения.Управляя инфраструктурой как кодом, используя методологии DevOps, мы повышаем надёжность системы и уменьшаем влияние человеческого фактора.
  13. И наконец:следуя DevOps, мы делаем крутые, качественные сервисы и продукты.
  14. В качестве примера такого крутого сервиса можно назвать Flikr.Как они достигли такого успеха?- Culture:- Respect- Trust- Healthy attitude about failure- Automated infrastructure- Shared version control- One step build and deploy- Feature flags- Shared metrics
  15. По перечисленным на этом слайде контактам, вы всегда сможете получить больше информации.Пожалуйста, какие вопросы у вас возникли по ходу презентации? Я с удовольствием на них отвечу.