Advanced.md

Play with MongoDB

# list all pods
kubectl get po

# enter the container 
kubectl exec -it pod-name bash

#--------- inside mongo container

# run mongo shell
mongo

# list all databases
show dbs

# select movies-db database
use movies-db

# add new movie to the collection
db.movies.insert({ title: 'title', genres: 'genres', cast: 'cast', rate: 8, runtime: 120 })

# list all movies
db.movies.find().pretty()

You can do the same to list your logs inside backend/frontend app, for example:

All you need to do is to run the same command:

kubectl exec -it pod-name bash

Other useful commands

Dry-run

• Kubernetes

  # example: kubectly run name --image=backend:v1 --expose --port=4000 --dry-run -o yaml
  kubectly run name --image=imageName:imageVersion --expose --port=PORT --dry-run -o yaml

• Helm

  # example: helm install --debug --dry-run ./helm-deployment
  helm install --debug --dry-run name-of-helm-deployment

Delete

• Helm

helm delete --purge helm-deployment

Cheatsheet

• Kubernetes