ABOUT ME Operations for databases @EdPiairo, #DevOpsPorto @EdPiairo https://pt.linkedin.com/in/jesuspiairo [email protected] http://www.eduardopiairo.com/ Eduardo Piairo Operations Engineer DevOps Porto Founder
THIS PRESENTATION Agile journey Scrum Kanban DevOps Operations for databases Database operations Automation Source Control Continuous Integration Continuous Delivery The definition and the interpretation of the covered concepts are attached to the cultural context of a specific organization on a certain period! @EdPiairo, #DevOpsPorto
BEFORE SCRUM Operations for databases • Before Scrum - The “real agile” method • Centralized decision mechanism • Growing phase • Size (5 to 15) • Complexity (more and more components) @EdPiairo, #DevOpsPorto
SCRUM Operations for databases • Scrum - The “magic” scrum • Scrum for the masses (>20) • Pure Scrum approach – operations as development team • 2 week sprint, sprint goal • The team was “too reactive” @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – THE BEGINNING Operations for databases Application #1 Application #2 Application #3 Shared database(s) Team #1 Team #2 Team #3 Team #T-SQL @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – BUILDING A DEPLOYMENT PIPELINE Operations for databases Source Control Continuous Integration Continuous Delivery Database + Application @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – PROBLEMS TO FIX Operations for databases • Databases are out of pace with application development • Synchronization between development and DBA teams • No traceability of database changes (changes history) • What changed? Who? When? Why? • Manual databases processes prevent the CI and CD utilization in their full extent • Time consuming and error prone • Releases are less frequent and risky @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – PROBLEMS TO FIX Operations for databases • Bugs in production environment • Database related bugs are only discovered after deployment to production • Manual or inexistent tests • Fixes and hotfixes have time cost, what can lead to delay a release • High dependency in a person (database specialist) • Fear of making changes @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – THE SOLUTION Operations for databases Source Control Continuous Integration Continuous Delivery Automation + Change control @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – THE VALUE OF AUTOMATION Operations for databases • Enable control over database development • Increase speed of response to change • Keep a versioned “history” of database states • Greater reliability of the release process • Increase release frequency through repeatability of processes • Reduce time spent fixing bugs @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – THE VALUE OF AUTOMATION Operations for databases • Remove/reduce human intervention in the release process • The build step is automatic triggered by a “push” into source control repository • The deploy step is automatic triggered by a successfully build process @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – THE 1ST STEP: SOURCE CONTROL Operations for databases • First step in your database deployment pipeline • Traceability through change history • SQL as documentation • Shared code-base and shared process • Enforceable standards to reduce conflicts • Fundamental resource: SQL script @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – THE 1ST STEP: SOURCE CONTROL Decision #2 Database source control: Migrations vs State Operations for databases @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – MIGRATIONS VS STATE Operations for databases • State based solutions • Script represents the current database state • Your source of truth is how the database should be • Migrations based solutions • Script represents a migration • Your source of truth is how the database should change Flyway: open source database migration tool • Simplicity: easy to setup, no need to install • Zero dependencies (java + jdbc) • Scripts are written in SQL @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES – COLLABORATION THROUGH A CONTRACT Operations for databases • Set of rules and expectations • Define responsibility frontiers • Sets a common language Application #1 Application #2 Application #3 Shared database(s) Team #1 T-SQL Script Team #2 Team #3 Team #T-SQL @EdPiairo, #DevOpsPorto
DEVOPS FOR DATABASES - RULES Operations for databases • Scripting rules • Rule 1: Script version (timestamp) • Rule 2: Operation type • Rule 3: Object type • Rule 4: Object name Example: V20160220.1100__Create_TB_MyTable.sql • One script, one operation type, one object @EdPiairo, #DevOpsPorto SMALL BATCHES
DEVOPS FOR DATABASES - THE PIPELINE Operations for databases • Contract – communication, collaboration mechanism for change management • Should be reflected in your development pipeline • The better/clearer your pipeline, the less you need to document (your code is your documentation) • Everything is negotiable in the contract, except its application @EdPiairo, #DevOpsPorto
KANBAN Operations for databases • Kanban 101 • Focus on development teams necessities • 4 week iterations • A bad choice • Different “language” from other teams • Desynchronization between operations and development teams @EdPiairo, #DevOpsPorto
SCRUM + KANBAN Operations for databases • Scrum + Kanban – The best of two worlds • 2 week sprint, sprint goal • Task definition was based on teams necessities and our necessities • Team capacity < 70% (enough bandwidth to react) • Strong and disciplined team • Integration in solutions design @EdPiairo, #DevOpsPorto
WHY DEVOPS? Operations for databases • Developing software is not enough, you have to deliver it • Communication and collaboration framework for manage changes • You can not stop change, but you can control it • CAMS • We change the culture (with lot of negotiation and evangelization) • We invested in automation (started with 0 automation in a never ending automation journey) • We conquer work flow visibility, so we were able to start measure • We spread the contract across the organization @EdPiairo, #DevOpsPorto
SOME METRICS/RESULTS Operations for databases • We went from 100% manual databases changes to about 98% automatic changes (100% controlled changes) • On average 200 scripts were created per day • In one year we achieved 10k scripts • We went from supporting only 1costumer to 4 costumers at the same time • Each week, costumer requests were delivered • Fixes were applied whenever necessary @EdPiairo, #DevOpsPorto
OPERATIONS WORK MANAGEMENT Operations for databases • Scrum or Kanban? • Depends on • DevOps team structure (http://web.devopstopologies.com/) • How many different topologies • Your clients • Good ideas • Have cadence/rhythm • Alignment with development team • Visibility, transparency and sharing (from doers to operations enablers) @EdPiairo, #DevOpsPorto
devopsporto
yujisoftware
line_developers
banjun
mode86
hato3isfriend
miyake
fujiwara3
trycycle
microcms
whywaita
inesmontani
vividtone
geoffreycrofte
morganepeng
marcelosomers
reverentgeek
shlominoach
chrislema
geeforr
colly
trallard
sstephenson
wjessup
myddelton