GCP Classroom notes 10/Sep/2024

Application Load Balancer

• This load balancer is http aware, we can do path based routed, name based routing
• Refer Here for official docs

Path Based Routing in GCP

• Lets create two custom images
  • browny
  • repairs Refer Here
• Then we will create two instance groups one hosting browny and other hosting repairs
• Now lets create an external application load balancer to route requests to
  • browny instance group if the path contains /browny/*
  • repairs instance group if the path contains /repairs/*
• For screenshots or creation using console refer classroom video
• We can also do header and query string based routing decisions Refer Here

Stateful Managed Instance Groups

• In stateful instance group, specfic data or state of the instances (like attached disks, ip addresses or metadata) is retained across restarts, updates and recreations
• This is useful where certain pars of instance need to persist evn if the instance is recreated
• UseCases:
  • Databases
  • Classic Applications with local data

Managing Virtual Machines using gcloud CLI

• Lets try creating a compute engine instance from gcloud cli
• instance creation Refer Here

#!/bin/bash

# lets get the debain image information
gcloud compute images list --filter="family:debian-12"

# Create the vm instance

gcloud compute instances create my-debian \
    --image-family=debian-12 \
    --image-project=debian-cloud \
    --zone=us-central1-f \
    --machine-type=e2-micro \
    --tags=http-server

gcloud compute instances delete my-debian  --zone=us-central1-f