stackconf 2022: Kubernetes/OpenShift (in way too short of time)

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When you look at YouTube and see a video that’s longer, than 5 mins, do you skip it? Have you wanted to learn about Kubernetes or OpenShift and can’t handle the 6-hour video? Don’t fret I have an ignite talk that hits all the major high points of Kubernetes and OpenShift, so you can walk away knowing the bare minimum.

Technology

JJ Asghar, Developer Advocate
awesome@ibm.com
@jjasghar
Kubernetes/OpenShift
(in way too short of time)

Container Orchestration (Open Source)
quarterly minor releases, no Long-Term Support
community support
platform certiﬁcation: (AKS, EKS, GKE, IKS)
core framework / limited security
platform or user responsible to integrate beyond core

Container Orchestration
(Production-Grade Open Source based Product)
quarterly releases, latest is 4.4
enterprise support
ecosystem certiﬁcation: platform and app containers
k8s core plus abstractions / dashboard / security
opinions and integration of common features

Deployments
Container
Container
Container
Pod B
Kubernetes/OpenShift
Container
Pod
E
Container
Container
Pod A1
Container
Container
Pod A2
Deployment
Replicas = 2
Kubernetes/OpenShift Kubernetes/OpenShift

Nodes
Container
Container
Pod C
Container
Container
Container
Pod B
Container
Pod
E
Container
Container
Container
Pod D
Container
Container
Pod A1
Container
Container
Pod A2
Deployment
Replicas
Node
Kubernetes/OpenShift
Node Node

Service Discovery
Container
Container
Container
Container
Container
Pod C
Pod A
Service
name: foo-web
5000
80
Kube-DNS
Applications would
connect to
http://foo-web
apiVersion: v1
kind: Service
metadata:
name: foo-web
labels:
app: foo-web
spec:
ports:
- port: 80
targetPort: 5000
name: foo-web-port
protocol: TCP
selector:
app: deploy-c
Container
Container
Pod C'
5000

Name Spaces
Container
Container
Container
Container
Container
Pod C
Pod B
Service
name: foo-web
5000
80
namespace: my-application
Container
Container
Container
Container
Container
Pod C
Pod B
Service
name: foo-web
5000
80
namespace: your-application

POD
C
POD
C
POD
C
PAYMENT DEV
POD
C
POD
C
POD
C
PAYMENT PROD
POD
C
POD
C
POD
C
CATALOG
POD
C
POD
C
POD
C
INVENTORY
❌
❌
❌
Projects extend namespaces to isolate apps across environments, teams and groups

Load Balancer
Container
Pod C
Service
name: foo-web
spec:
type: Loadbalancer
5000
80
External IP
Container
Pod C'
5000

Ingress
Container
Pod C
Container
Container
Container
Container
Pod
E
Pod D
Service
name: foo-web
5000
80
Ingress
host: sdague-k001.us-east.containers.mybluemix.net
http:
paths:
- path: /
backend:
serviceName: foo-web
servicePort: 80
- path: /data
backend:
serviceName: foo-data
servicePort: 3000
Service
name: foo-data

Routes extend ingress to add services to the external load-balancer and provide readable
URLs for the app
POD
CONTAINER
POD
CONTAINER
POD
CONTAINER
BACKEND SERVICE
ROUTE
app-prod.mycompany.com

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stackconf 2022: Kubernetes/OpenShift (in way too short of time)

1. JJ Asghar, Developer Advocate awesome@ibm.com @jjasghar Kubernetes/OpenShift (in way too short of time)

2. Building blocks

3. Container Technology Multiple offerings (podman, docker, buildah...) All should adhere to spec from OCI Need a container registry (Docker Hub, Quay) Build from a Dockerﬁle Package and run anywhere! (With container runtime) This is where the Docker logo should be, but it can’t because of branding rules.

4. Container Orchestration (Open Source) quarterly minor releases, no Long-Term Support community support platform certiﬁcation: (AKS, EKS, GKE, IKS) core framework / limited security platform or user responsible to integrate beyond core

5. Container Orchestration (Production-Grade Open Source based Product) quarterly releases, latest is 4.4 enterprise support ecosystem certiﬁcation: platform and app containers k8s core plus abstractions / dashboard / security opinions and integration of common features

6. Deployments Container Container Container Pod B Kubernetes/OpenShift Container Pod E Container Container Pod A1 Container Container Pod A2 Deployment Replicas = 2 Kubernetes/OpenShift Kubernetes/OpenShift

7. Nodes Container Container Pod C Container Container Container Pod B Container Pod E Container Container Container Pod D Container Container Pod A1 Container Container Pod A2 Deployment Replicas Node Kubernetes/OpenShift Node Node

8. Internal concepts of k8s and OpenShift

9. Service Discovery Container Container Container Container Container Pod C Pod A Service name: foo-web 5000 80 Kube-DNS Applications would connect to http://foo-web apiVersion: v1 kind: Service metadata: name: foo-web labels: app: foo-web spec: ports: - port: 80 targetPort: 5000 name: foo-web-port protocol: TCP selector: app: deploy-c Container Container Pod C' 5000

10. Name Spaces Container Container Container Container Container Pod C Pod B Service name: foo-web 5000 80 namespace: my-application Container Container Container Container Container Pod C Pod B Service name: foo-web 5000 80 namespace: your-application

11. POD C POD C POD C PAYMENT DEV POD C POD C POD C PAYMENT PROD POD C POD C POD C CATALOG POD C POD C POD C INVENTORY ❌ ❌ ❌ Projects extend namespaces to isolate apps across environments, teams and groups

12. Load Balancer Container Pod C Service name: foo-web spec: type: Loadbalancer 5000 80 External IP Container Pod C' 5000

13. Ingress Container Pod C Container Container Container Container Pod E Pod D Service name: foo-web 5000 80 Ingress host: sdague-k001.us-east.containers.mybluemix.net http: paths: - path: / backend: serviceName: foo-web servicePort: 80 - path: /data backend: serviceName: foo-data servicePort: 3000 Service name: foo-data

14. Routes extend ingress to add services to the external load-balancer and provide readable URLs for the app POD CONTAINER POD CONTAINER POD CONTAINER BACKEND SERVICE ROUTE app-prod.mycompany.com

15. kubectl

16. oc

17. helm or operators?

18. Istio or Linkerd

19. Thank you! @jjasghar || awesome@ibm.com

stackconf 2022: Kubernetes/OpenShift (in way too short of time)

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