GCP Google Cloud Platform - Cloud Monitoring Groups

Step-01: Introduction¶

Learn the following Cloud Monitoring concepts
Groups:
Monitoring lets you define and monitor groups of resources, such as VM instances, databases, and load balancers.
You can organize resources into groups based on criteria that make sense for your applications

Step-02: Create VM Instance with sample webserver installed¶

# Set Project
gcloud config set project PROJECT_ID
gcloud config set project gcplearn9

# Create VM Instance: demovm1
gcloud compute instances create demovm1 \
  --zone=us-central1-a \
  --machine-type=e2-micro \
  --network-interface=subnet=default \
  --tags=http-server \
  --metadata-from-file=startup-script=webserver-install.sh 

# Create VM Instance: demovm2
gcloud compute instances create demovm2 \
  --zone=us-central1-a \
  --machine-type=e2-micro \
  --network-interface=subnet=default \
  --tags=http-server \
  --metadata-from-file=startup-script=webserver-install.sh 

# List Compute Instances
gcloud compute instances list

Step-03: Create Monitoring Group for both VMs¶

Go to Cloud Monitoring -> Configure -> Groups -> CREATE GROUP
Name: vm-group1

Criteria¶

Type: Name
Operator: contains
Value: demovm
Click on DONE
Click on CREATE

Step-04: Create Uptime Checks¶

Go to Cloud Monitoring -> Detect -> Uptime checks -> CREATE UPTIME CHECK

Target¶

Protocol: HTTP
Resource type: Instance
Applies to: Group
Group: vm-group1
Path: /index.html
Check Frequency: 1 minute
Regions: Global (leave to defaults)
REST ALL LEAVE TO DEFAULTS
CONTINUE

Response Validation¶

Response Timeout: 10 seconds
Content matching is enabled: Enable it
Response Content Match Type: contains
Response content: Welcome
REST ALL LEAVE DEFAULTS
CONTINUE

Alert & Notification¶

Create an alert: enable it
Name: Uptime failure for vm-group1
Durantion: 1 minute
Notifications: Create new Notification channel (EMAIL)
CONTINUE

Review¶

Enter a name for the uptime check
Title: vm-group1 Uptime Checks
Click on CREATE

Step-05: Stop VM and Verify the Incidents¶

# Stop VM
gcloud compute instances stop demovm1 --zone=us-central1-a
gcloud compute instances stop demovm2 --zone=us-central1-a

# Verify email in gmail
We should see Incident emails for both VMs

# Observation
1. We can create monitoring alerts for group of VMs with a single policy

Step-06: Clean-Up¶

# Delete VMs
gcloud compute instances delete demovm1 --zone=us-central1-a
gcloud compute instances delete demovm2 --zone=us-central1-a

# Delete Uptime checks and Alert policy
Go to Cloud Monitoring -> Detect -> Uptime checks -> vm-group1 Uptime Checks -> DELETE

# Delete Groups
Go to Cloud Monitoring -> Configure -> Groups -> vm-group1 -> Delete