ReadingNotes

Reading Notes

Docker

Commands

• Check version

  docker version

• Images

  • Help on docker images command options

    docker images --help

  • List all images on a machine

    docker images -a

• Containers

  • Help on docker ps command options

    docker ps --hep

  • List all running containers on a machine

    docker ps

  • List all containers on a machine irrespective of status

    docker ps -a

Kubernetes

• Kubernetes manages resources i.e Virtual Servers
• Different cloud providers have different names for these virtual servers
  • AWS calls them EC2
  • Azure calls them virtual machines
  • GCP calls them Compute engine and Kubernetes call them generically as Nodes

Configure GKE (Google Kubernetes Engine) gcloud config set account gcloud config set project <PROJECT_NAME> gcloud config set compute/zone

Ex:
gcloud config set account cloud_user_p_dae418f5@linuxacademygclabs.com
gcloud config set project 
gcloud config set compute/zone us-central-a

Login gcloud auth login

Creatng cluster gcloud container clusters - create <CLUSTER_NAME> --num-nodes=<NUMBER_OF_NODES_IN_CLUSTER> - get-credentials <CLUSTER_NAME>
- KubeCtl

• kubectl create deployment --image=deepaksama26/kube-demo:0.0.1-SNAPSHOT

• kubectl expose deployment --type=LoadBalancer --port=8080

• kubectl get deployments/deployment

• kubectl get sevices/service

• kubectl get replicasets/replicaset

• kubectl get pods/pod

• Note: -o wide option gives more details

• kubectl describe - gives complete details about the type

• kubectl describe pod

• kubectl scale deployment kube-demo --replicas=3

Mysql installation with docker