Download to read offline
Uploaded byAna-Maria Mihalceanu
Kubernetes and the 12 factor cloud apps
The document discusses the 12 factors for building cloud-native applications and how Kubernetes enables them. It covers each of the 12 factors in order, providing examples of how to implement the factors using Kubernetes concepts like deployments, services, secrets and configmaps. The takeaways are to decouple infrastructure from applications, prefer managed services, keep environments similar, design stateless applications that can scale, and implement proper monitoring.
More Related Content
Similar to Kubernetes and the 12 factor cloud apps
Kubernetes and the 12 factor cloud apps
- 1. Kubernetes & the12 factors cloud applications Ana Maria Mihalceanu #JBCNConf2019
- 2. @ammbra1508#JBCNConf2019 HELLO! I am Ana TechnicalLead @ IBM Co-founder of Bucharest Software Craftsmanship Community
- 3. Why 12 factors& Kubernetes? @ammbra1508#JBCNConf2019 PortabilityLocal vs production Run at push of a button Evolution Declarative formats Scale up with minimal changes Clean Contract Continuous deployment
- 4.
- 5. FACTOR 1 -CODEBASE @ammbra1508#JBCNConf2019 One codebase tracked in revision control, with multiple deployments.
- 7. FACTOR 1 -CODEBASE @ammbra1508#JBCNConf2019
- 8. FACTOR 2 -DEPENDENCIES @ammbra1508#JBCNConf2019 Explicitly declare and isolate dependencies.
- 9. FACTOR 3 -CONFIGURATION @ammbra1508#JBCNConf2019
- 10. FACTOR 3 -CONFIGURATION @ammbra1508#JBCNConf2019 Store configuration in the environment. kubectl create secret docker-registry ${SECRET_NAME} --namespace ${CLUSTER_NAMESPACE} --docker-server=${REGISTRY} --docker-password=${TOKEN} --docker-username=iamapikey --docker-email=a@b.com
- 11. FACTOR 4 –BACKING SERVICE @ammbra1508#JBCNConf2019
- 12. FACTOR 4 –BACKING SERVICE @ammbra1508#JBCNConf2019 Treat backing services as attached resources. apiVersion: v1 kind: Secret metadata: name: cloudant type: Opaque data: binding: {}
- 13. FACTOR 5 –BUILD, RELEASE, RUN @ammbra1508#JBCNConf2019
- 14. FACTOR 5 –BUILD, RELEASE, RUN @ammbra1508#JBCNConf2019 Strictly separate build and run stages.
- 15. FACTOR 5 –BUILD, RELEASE, RUN @ammbra1508#JBCNConf2019
- 17. FACTOR 6 –PROCESSES @ammbra1508#JBCNConf2019 Execute the app as one or more stateless processes. Container Filesystem Persistent Volume Volume
- 18. FACTOR 6 –PROCESSES @ammbra1508#JBCNConf2019 kubectl apply –f ${CREATE_VOLUME}.yaml kubectl apply –f ${COPY_SCRIPTS_POLLER}.yaml kubectl cp ./scripts ${POD}:/${LOCATION} kubectl apply –f ${USE_SCRIPTS}.yaml
- 19. FACTOR 7 –PORT BINDING @ammbra1508#JBCNConf2019 kubectl apply –f ${DEPLOYMENT_FILE}
- 20. FACTOR 7 –PORT BINDING @ammbra1508#JBCNConf2019 Export services via port binding. kubectl expose deployment/${NAME} --type=”${SERVICE_TYPE}” --name=${SERVICE_NAME}
- 21. FACTOR 8 –CONCURRENCY @ammbra1508#JBCNConf2019 YAML Deployment Replica Set Selector Selector Pod Template Template replicas = 2 spec.replicas = 2 POD POD APPLY
- 22. FACTOR 8 –CONCURRENCY @ammbra1508#JBCNConf2019 Scale out via the process model. kubectl autoscale deployment {$DEPLOYMENT} --min=${MIN_PODS} --max=${MAX_PODS} --cpu-percent=${CPU} --namespace=${NAMESPACE}
- 23. FACTOR 9 –DISPOSABILITY @ammbra1508#JBCNConf2019 helm upgrade ${RELEASE} ${CHART} --recreate-pods Fast startup Graceful shutdown
- 24. FACTOR 9 –DISPOSABILITY @ammbra1508#JBCNConf2019 Application boot time Rolling update one after another
- 26. FACTOR 10 –DEV PROD PARITY @ammbra1508#JBCNConf2019 Time People Tools
- 27. FACTOR 10 –DEV PROD PARITY @ammbra1508#JBCNConf2019 Keep development, staging and production as similar as possible. kubectl create namespace ${NAMESPACE}
- 28. FACTOR 11 –LOGS @ammbra1508#JBCNConf2019
- 29. FACTOR 11 –LOGS @ammbra1508#JBCNConf2019 kubectl create secret generic logdna-agent-key --from-literal=logdna-agent-key=<ingestion_key> kubectl create -f https://repo.logdna.com/ibm/prod/logdna-agent-ds- us-south.yaml
- 30. FACTOR 12 –ADMIN PROCESSES @ammbra1508#JBCNConf2019 Run admin/management tasks as one-off processes. kubectl create configmap ${CONFIG} --from-file=scripts/ -o yaml kubectl apply –f ${ONE_TIME_JOB_CONFIGURATION}
- 31. @ammbra1508#JBCNConf2019 @ammbra1508#JBCNConf2019 TAKEAWAYS Decouple Decouple infrastructure complexity from your applicationcode. Managed Services Prefer managed services in matters involving persistency. Environment Parity Keep your environments as similar as possible.
- 32. @ammbra1508#JBCNConf2019 @ammbra1508#JBCNConf2019 TAKEAWAYS Stateless Design your application as stateless. Scale Yourapplication should be able to process diverse workloads. Monitor Use appropriate logging in application code and implement cluster-level logging.
- 33. @ammbra1508#JBCNConf2019 The strongest factorfor success is self-esteem. Believing you can do it, believing you deserve it, believing you will get it. Anonymous “ “
- 34.
- 35.