Winter 2016 (c) Ian Davis

By Sanjeev Sharma Bernie Coyne DevOps for Dummies By Sanjeev Sharma Bernie Coyne Winter 2016 (c) Ian Davis

Available for free download Google “DevOps for Dummies - IBM.com‎” https://www-01.ibm.com/marketing/iwm/iwm/web/signup.do?source=swg-rtl-sd-wp&S_PKG=ov18162&S_TACT=C42807PW&iio=bcloud&cmp=na_ca_en|pm_cloud|google_sn_ever_present_devops_-_devops_for_dummies_un&ct=c42807pw&cr=google&cm=k&csot=eb&ccy=ca-en&cpb=cloud&cd=-&ck=devops&cs=exact&cot=l&cpg=pcld Winter 2016 (c) Ian Davis

The problem Software projects fail Failure related to development/delivery So development/delivery practice critical IBM survey Only 25% believe their teams are effective Missing business opportunities Winter 2016 (c) Ian Davis

Recent system transition Old: Record based systems Stable, static, boring mainframe implementations New: Customer engagement systems Mobile communications, web based, cloud etc. Easy to use; high performance Evolve to better reflect customers needs Evolve to better reflect market forces Focus on user experience, speed of delivery, agile Winter 2016 (c) Ian Davis

Goal of DevOps “On the rise” – Gartner 2013 Buzz word → Risk ill-defined, overblown Reduce time to market for new features Specifically commit time to placing in system While ensuring high quality of deliverable Impacts Team organisation How systems are built Structure of those systems Winter 2016 (c) Ian Davis

DevOp Side Effects Enhanced customer experience System responsive to customer feedback Improved capacity to innovate Though more efficient test strategies Roll out better software Recall worse software Faster time to value Tools and culture → speed, predictability, success Winter 2016 (c) Ian Davis

Core Principles Develop & test against production-like systems Involve operations earlier (shift-left) Deploy with repeatable, reliable processes Deploy incrementally and often Monitor and validate operational quantities Test non-functional attributes early Amplify feedback loops Need communication channels for all stakeholders Winter 2016 (c) Ian Davis

Winter 2016 (c) Ian Davis

The DevOps Culture High degree of collaboration across roles Focus on business (not departments) Trust and reciprocal support Value placed on learning through experiment Lean agile transformation practices Scaled Agile Framework (SAFe) Disciplined Agile Delivery (DAD) Scrum, etc. Winter 2016 (c) Ian Davis

The challenge Development Operations Rewarded for more improvements delivered faster Quality suffers Operations Rewarded for system uptime and stability So opposed to software changes Solution: share both responsibilities Improve visibility of tasks/actions/problems Winter 2016 (c) Ian Davis

The cloud Provisioning and configuration As needed When needed For the version needed Simulation of test environments Eases deployment to production Winter 2016 (c) Ian Davis

Winter 2016 (c) Ian Davis

Cloud Service Models Software as a Service (SaaS) Email, online games, customer relations, virtual desktops (human view of what a service is) Platform as a Service (PaaS) Web servers, database, development tools, etc. (software view of what a service is) Infrastructure as a Service (IaaS) Virtual machines, storage, load balances, networks (virtual OS view) Winter 2016 (c) Ian Davis

Software as a service Eureqa Leveraging the power of Amazon Cloud Permits machine learning Using provided models http://www.nutonian.com Leveraging the power of Amazon Cloud http://formulize.nutonian.com/documentation/eureqa/user-guide/use-the-cloud Winter 2016 (c) Ian Davis

Platform as a service WordPress End user interacts with software on cloud End user configures software on cloud Winter 2016 (c) Ian Davis

Infrastructure as a Service Virtual OS Can support different OS’s Permits testing across OS’s OS image loaded, and saveable Permits sharing of images Easy later configuration of system Behaves like a remote desktop Optimises CPU usage across machines Winter 2016 (c) Ian Davis

Hybrid Cloud Problems Combination of cloud and physical systems Can’t virtualise everything On and off premises cloud systems Can’t run everything anywhere Combination of IaaS and PaaS Not one release strategy Portability across more than one cloud provider To avoid risk of vendor lock-in (or to exploit choice) Winter 2016 (c) Ian Davis

10 Myths about DevOps Is only for “born on the web” shops Is operations learning how to code Is just for development and operations Isn’t for ITIL (standards compliance) Isn’t for regulated industries Winter 2016 (c) Ian Davis

Myths continued Isn’t for out sourced development No cloud means no DevOps Not for large complex systems Is only about communications Involves continuous change deployment Winter 2016 (c) Ian Davis