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Hostpath Volume: A hostpth volume in k8s mount as filesystem or directory. it will create same node where my pod will deploy.

apiVersion: apps/v1 kind: Deployment metadata: name: recreate-deployment-app labels: app: apache2 spec: replicas: 2 selector: matchLabels: app: apache2 strategy: type: Recreate template: metadata: labels: app: apache2 spec: initCo...

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K8s storage: Container are ephameral. when container will restart , everthing will be wirte in file system it will be lost. K8s Storage sloved two problem Presistance: data will survives container restart and pod rescheduling. Sharing: multiple container can share data. Storage building blocks: Volume: scope level is pod directly access container in pod volume - name: de...

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Loadblancer:

ELB

--- apiVersion: apps/v1 kind: Deployment metadata: name: recreate-deployment-app labels: app: apache2 spec: replicas: 2 selector: matchLabels: app: apache2 strategy: type: Recreate te...

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Kuberentes Networking 1. Golden rule in K8s Networking Every pod has its own ip address Every pod will comunicate with another pod without NAT k8s have its own route table

2. CNI (container network Interface) k8s does not implement any networkinmg itself it is dellegated to CNI plugins every CNI Having its own specifications + plugins ex: Callico, flannel , aws vpc, ...

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DaemonSet: DaemonSet ensure create pod on each node Ex: Logs , Networking , node-agent …etc

Create DaemonSet yaml apiVersion: apps/v1 kind: DaemonSet metadata: name: demonset-demo spec: selector: matchLabels: name: demonset-demo template: metadata: labels: name: demonset-demo spec: containers: - name: apache2 image: httpd:2.4 ports: - containerPort: 80 S...

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