Raju Dawadi dwdraju

Get pods

kubectl get pods

Enter into pod

kubectl exec -it [pod-name] /bin/bash

vault:
  container_name: vault
  image: dtestops/vault
  volumes:
    - ./vault.hcl:/etc/vault.hcl
  links:
    - "mysql:mysql"
  ports:
 - "8200:8200"

Dynamic environments and distributed systems - like microservices - lead to a higher chance of failures.
Services should fail separately, achieve graceful degradation to improve user experience.
70% of the outages are caused by changes, reverting code is not a bad thing.
Fail fast and independently. Teams have no control over their service dependencies.
Architectural patterns and techniques like caching, bulkheads, circuit breakers and rate-limiters help to build reliable microservices.

#!/bin/bash

if [ ! -z "$DEBUG" ]; then
  set -x
  DEBUG=
fi
DOMLIST="example.com"

for D in $DOMLIST

npm install -g yo generator-hubot
mkdir myhubot
cd myhubot
yo hubot

bin/hubot
Hubot&gt;

kubectl create serviceaccount --namespace kube-system tiller
kubectl create clusterrolebinding tiller-cluster-rule --clusterrole=cluster-admin --serviceaccount=kube-system:tiller
kubectl patch deploy --namespace kube-system tiller-deploy -p '{"spec":{"template":{"spec":{"serviceAccount":"tiller"}}}}'      
helm init --service-account tiller --upgrade

helm init

# Remote write configuration (for Graphite, OpenTSDB, or InfluxDB).
remote_write:
- url: "http://localhost:8086/api/v1/prom/write?u=paul&p=foo&db=prometheus"
# Remote read configuration (for InfluxDB only at the moment).
remote_read:
- url: "http://localhost:8086/api/v1/prom/read?u=paul&p=foo&db=prometheus"

gcloud beta compute sole-tenancy node-templates create test-tenant-node --region us-central1 --node-requirements vCPU=any,memory=any,localSSD=0


gcloud beta compute sole-tenancy node-groups create sole-tenancy-group --zone us-central1-b --node-template test-tenant-node --target-size 2


gcloud beta compute instances create my-sole-instance --zone us-central1-b     --image-family ubuntu-1604-lts --image-project ubuntu-os-cloud     --node-group sole-tenancy-group --custom-cpu 4 --custom-memory 5

gcloud beta compute sole-tenancy node-templates list

Generate cert

openssl req -new -x509 -keyout yourpemfile.pem -out yourpemfile.pem -days 365 -nodes

Run Python Server

import BaseHTTPServer, SimpleHTTPServer
import ssl

	#!/bin/bash
	set -e
	set -o pipefail

	# Add user to k8s using service account, no RBAC (must create RBAC after this script)
	if [[ -z "$1" ]] \|\| [[ -z "$2" ]]; then
	echo "usage: $0 <service_account_name> <namespace>"
	exit 1
	fi