Python boto3 (AWS EC2) list Nested JSON Data

Question

I use boto3 to get a list of all instances like this.

id: i-fa512784, zone: us-east-1, state: running, name: redis, env: staging-db, app: php
id: i-fa112784, zone: us-east-1, state: running, name: redis, env: production, app: php

I would like to create a single string for all values per instance. Ie each of instances should have own string with own keys. My goal is to put this data into Prometheus.

I have got stuck on parsing nested "Tags": [ to get all values and output all of them into one string

My code

#!/usr/bin/python3

import boto3.utils
boto3.setup_default_session(profile_name='profile')
client = boto3.client('ec2')

response = client.describe_instances(
   MaxResults=10,
)

for r in response['Reservations']:
    for i in r['Instances']:
        for tags in i['Tags']:
        print ('id:',i['InstanceId'], 'zone:',i['Placement']['AvailabilityZone'], 'state:',i['State']['Name'])

Thank you in advance

Answer 1

Following is the code, you might need to change logic to append data to tag_values_list ;

#!/usr/bin/python3

import boto3.utils

boto3.setup_default_session(profile_name='profile')
client = boto3.client('ec2')

response = client.describe_instances(
    MaxResults=10,
)

for r in response['Reservations']:
    for i in r['Instances']:
        tag_values_list = []
        for tags in i['Tags']:
            for key, value in tags.items():
                tag_values_list.append(value)

        print('id:', i['InstanceId'], 'zone:', i['Placement']['AvailabilityZone'], 'state:', i['State']['Name'],
              'tags:',
              tag_values_list)