![2. PODS
$ kubectl run site --image=babelcoder/intro-to-devops-ui:1.0
$ kubectl get pod
NAME READY STATUS RESTARTS AGE
site 1/1 Running 0 2m1s
$ kubectl port-forward site 5151:80
Forwarding from 127.0.0.1:5151 -> 80
Forwarding from [::1]:5151 -> 80
Babel Coder](https://image.slidesharecdn.com/5kubernetes-240317162438-1fe34e97/85/5-Kubernetes-pdf-5-Kubernetes-pdf-5-Kubernetes-pdf-4-320.jpg)
![2. PODS
$ kubectl port-forward site 5151:80
Forwarding from 127.0.0.1:5151 -> 80
Forwarding from [::1]:5151 -> 80
kubectl
5151 kube API
server
Pod
44
3
80
localhos
t
Kubernetes Cluster
Babel Coder](https://image.slidesharecdn.com/5kubernetes-240317162438-1fe34e97/85/5-Kubernetes-pdf-5-Kubernetes-pdf-5-Kubernetes-pdf-5-320.jpg)
5 Kubernetes.pdf 5 Kubernetes.pdf 5 Kubernetes.pdf
- 1. Babel Coder
- 2. 1. CONTAINER ORCHESTRATION https://kubernetes.io/docs/concepts/architecture/ Babel Coder
- 3. 1. CONTAINER ORCHESTRATION Babel Coder
- 4. 2. PODS $ kubectl run site --image=babelcoder/intro-to-devops-ui:1.0 $ kubectl get pod NAME READY STATUS RESTARTS AGE site 1/1 Running 0 2m1s $ kubectl port-forward site 5151:80 Forwarding from 127.0.0.1:5151 -> 80 Forwarding from [::1]:5151 -> 80 Babel Coder
- 5. 2. PODS $ kubectl port-forward site 5151:80 Forwarding from 127.0.0.1:5151 -> 80 Forwarding from [::1]:5151 -> 80 kubectl 5151 kube API server Pod 44 3 80 localhos t Kubernetes Cluster Babel Coder
- 6. 2. PODS $ kubectl delete pod site pod "site" deleted Babel Coder
- 7. /usr/share/nginx/htm l index.htm l 3. MULTI-CONTAINER DESIGN PATTERNS site init Init Containers api ambassado r Ambassador Pattern localhost:637 9 redis pod redis redis:637 9 Babel Coder
- 8. 3. MULTI-CONTAINER DESIGN PATTERNS site lo g Sidecar Pattern api redis pod Volume log transformer Volume site Adapter Pattern Babel Coder
- 9. 4. DEPLOYMENTS Deployment ReplicaSet Pods Manage s Manage s Babel Coder
- 10. 4. DEPLOYMENTS ReplicaSet Deployment app=site app=site app=site app=api $ kubectl apply -f deployment.yaml deployment.yaml Babel Coder
- 11. Target Pod Target Pod Target Pod Source Pod Cluster IP 5. SERVICES - CLUSTER IP Kubernetes Cluster Node Node Internal Communication (api ) (db ) (db ) (db ) service.yaml Babel Coder
- 12. 5. SERVICES - CLUSTER IP Kubernetes Cluster Target Pod Target Pod Target Pod Source Pod Cluster IP Node Node Internal Communication (api ) (db ) (db ) (db ) $ $ kubectl apply -f service.yaml $ kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE db ClusterIP 10.102.134.43 <none> 6379/TCP 3s $ kubectl describe svc db TargetPort: 6379/TCP Endpoints: 10.1.0.26:6379,10.1.0.30:6379,10.1.0.32:6379 $ kubectl run busybox --rm --restart Never -it -- image=busybox / # telnet db 6379 Connected to db Babel Coder
- 13. Target Pod Target Pod Target Pod Cluster IP Node Port - 32074 Node Port - 32074 5. SERVICES - NODEPORT Kubernetes Cluster (api ) (api ) (api ) service.yaml Babel Coder
- 14. 5. SERVICES - NODEPORT Kubernetes Cluster Target Pod Target Pod Target Pod Cluster IP Node Port - 32074 Node Port - 32074 (api) (api) (api) $ kubectl apply -f service.yaml $ kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE api NodePort 10.100.61.121 <none> 5152:32074/TCP 14m $ kubectl describe svc api Port: <unset> 5152/TCP TargetPort: 3000/TCP NodePort: <unset> 32074/TCP Endpoints: 10.1.0.27:3000,10.1.0.28:3000,10.1.0.34:3000 $ curl localhost:32074 Babel Coder
- 15. Target Pod Target Pod Target Pod Cluster IP Node Port - 32074 Node Port - 32074 5. SERVICES - LOADBALANCER Load Balancer Kubernetes Cluster (api ) (api ) (api ) service.yaml Babel Coder
- 16. Target Pod Target Pod Target Pod Cluster IP Node Port - 30575 Node Port - 30575 5. SERVICES - LOADBALANCER Load Balancer Kubernetes Cluster (api ) (api ) (api ) $ kubectl apply -f service.yaml $ kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE site LoadBalancer 10.96.239.241 localhost 5151:30575/TCP 34m $ kubectl describe svc api Port: <unset> 5151/TCP TargetPort: 80/TCP NodePort: <unset> 30575/TCP Endpoints: 10.1.0.29:80,10.1.0.31:80,10.1.0.33:80 Session Affinity: None External Traffic Policy: Cluster $ curl localhost:5151 Babel Coder