.NET and Kubernetes

Kubernetes ecosystem around .NET

Transcript

1. .NET AND K8S ECOSYSTEM Dimitry Ushakov QE Minion
2. Why do we hope to achieve tonight? GOAL
3. AWS vs Google vs Azure Major Cloud Providers • All are growing but Azure and Google are growing at a faster rate than AWS (1), followed by GCP • Other players ‣ Openstack Private Cloud (2) ‣ AliBaba Cloud (3) ‣ IBM ‣ Oracle ‣ Many others ‣ (1) https://www.sdxcentral.com/articles/news/microsoft-beats-aws-in-cloud-revenues-for-the-first-quarter-of-2018/2018/04/ ‣ (2) http://www.cloudpro.co.uk/leadership/cloud-essentials/7154/openstack-set-to-reach-6-billion-by-2021-says-451-research ‣ (3) https://techcrunch.com/2018/02/06/alibaba-cloud-growing-like-gangbusters-but-still-far-behind-aws-and-other-market-leaders/
4. Workloads are critical ‣ Companies need to think workloads instead of providers ‣ Movement between providers should be as seamless as possible ‣ Enter Kubernetes • http://www.eweek.com/cloud/ibm-cto-defines-multi-cloud-reality-at-kubecon-europe
6. Why Kubernetes? 6 • Clear leader in orchestration space: ‣ https://www.docker.com/kubernetes ‣ https://docs.microsoft.com/en-us/azure/aks/ ‣ https://www.openshift.com/learn/topics/kubernetes/ ‣ https://aws.amazon.com/eks/ ‣ https://cloud.google.com/kubernetes-engine/ ‣ https://www.openstack.org/software/releases/queens/components/kolla and https://www.openstack.org/sof tware/releases/queens/components/magnum ‣ First class citizen in all major providers
7. What is Kubernetes - Design 7 Workloads Pods containers managed by controllers
8. Deployment Controller 8
9. What is Kubernetes - Design 9 Discovery and Load Balancing Services Ingress
10. Service 10
11. What is Kubernetes - Design 11 Config and storage Config maps Secrets Volumes
12. 12 ConfigMap • Create config map to inject configuration into app ‣ Files ‣ Literal values ‣ kubectl create configmap meetupapi-config --from-file ~/dima/presentations/2018-05- 14-k8s-and-net/config/local.properties • (ENV Vars can be passed directly into the pod if static)
13. 13 Secrets • Create secret in kubernetes • Consume in pod • If using templates, DO NOT check it in • Reference it in the pod (as volumes or as ENV vars)
14. 14 Volumes • Different kinds: ‣ Persistent • Supports different drivers ‣ AzureFile ‣ AzureDisk ‣ AWSElasticBlockStore ‣ GCEPersistentDisk ‣ Cinder ‣ Dynamic volumes – provisions volumes on the fly
15. What is Kubernetes - Design 15 Clustering Metadata Autoscaling Extensions Events
16. What is Kubernetes - Architecture 16
17. Local Demo 17 https://github.com/kubernetes/minikube
18. Not quite 18 Kubernetes and .NET – solved? • For .NET Core – SURE! • Existing .NET apps (not core) … maybe: ‣ Kubernetes 1.10 windows container support is in beta. • Is definitely possible if running on Windows infrastructure
19. 19 Kubernetes and Windows Containers – what’s missing? • Control plane (master node) needs to run on Linux infra • Only support for Windows Server 2016 and later (preferred 1709+) • Docker 17.06+ • CNI plugins (https://github.com/containernetworking/plugins/pull/85) ‣ Win-l2bridge (host-gateway) CNI plugin is coming ‣ Win-overlay (vxlan) is coming • No StatefulSet support • Secrets and ConfigMap cannot be used as volume mounts • No Hyper-V isolation • Flannel not supported • ENVVARS that use `:` need to replace with `__` else K8S breaks
20. Deployment solved – everything else? 20 • Enter Kubernetes ecosystem ‣ Packaging ‣ Service Mesh ‣ Monitoring ‣ Logging ‣ Tracing ‣ CI/CD and Code Integration
21. Helm 21 https://helm.sh/
22. Service Mesh 22 • EnvoyProxy - https://www.envoyproxy.io/ • https://github.com/solo-io/envoy-operator
23. Monitoring 23 • Prometheus - https://prometheus.io/ • Monitors orchestration clusters and applications • https://medium.com/@timfpark/simple-kubernetes-cluster-monitoring-with-prometheus-and- grafana-dd27edb1641
24. Logging and Tracing 24 • FluentD - https://www.fluentd.org/ • OpenTracing - http://opentracing.io/ • Sidecars to aggregate logging and send it to a single storage (ELK, for example) • Sidecars to trace requests through all services
25. 25 FluentD ConfigMap
26. 26 CI/CD and Code Integration • OpenShift - https://www.openshift.org/ • Kubernetes + code pipelines ‣ Build configuration ‣ CI/CD pipelines ‣ Security ‣ Routing ‣ https://medium.com/levvel-consulting/the- differences-between-kubernetes-and- openshift-ae778059a90e
27. 27 OpenShift on Public Cloud • https://azure.microsoft.com/en-us/blog/openshift-on-azure-the-easiest-fully-managed- openshift-in-the-cloud/ • https://aws.amazon.com/about-aws/whats-new/2017/09/red-hat-openshift-container-platform- on-the-aws-cloud-quick-start-reference-deployment/ • https://cloud.google.com/solutions/partners/openshift-on-gcp • https://www.redhat.com/en/about/press-releases/red-hat-and-alibaba-cloud-join-forces-bring- increased-flexibility-open-source
28. Potential if time permits 28 • Deploy on Azure Kubernetes • Deploy the same thing on GCP Kubernetes
29. Next steps 29 • I have an enterprise .NET ASP.NET web forms app. Can I lift and shift? ‣ Not easily (not on AKS) • If I can’t move my enterprise app, should I forget about Kubernetes? ‣ Not necessarily ‣ Options include: • New services written in .NET core while moving enterprise app to service fabric • Peeling onions off current enterprise app to make it more cloud friendly (if it makes sense) and moving those pieces to .NET core ‣ 12-factor App - https://12factor.net/
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