AWS adding instance via api gateway - node.js

Question

So I have function in Lambda. Function is connected to the api gateway and it should add EC2 instance. When im reaching the endpoint by api gateway method test, it returns status 200 but no instance has been added. Maybe the instance params are wrong? Basically the function is modified version of documentation example.
var AWS = require('aws-sdk');
AWS.config.update({region: 'us-east-2'});
exports.handler = function index(event, context, callback) {
// Load the AWS SDK for Node.js
// Load credentials and set region from JSON file
// Create EC2 service object
var ec2 = new AWS.EC2({apiVersion: '2016-11-15'});
// AMI is amzn-ami-2011.09.1.x86_64-ebs
var instanceParams = {
InstanceType: 't2.micro',
KeyName: 'firstkeypair',
ImageId: 'ami-0bbe28eb2173f6167'
};
// Create a promise on an EC2 service object
var instancePromise = new AWS.EC2({apiVersion: '2016-11-15'}).runInstances(instanceParams).promise();
// Handle promise's fulfilled/rejected states
instancePromise.then(
function(data) {
console.log(data);
var instanceId = data.Instances[0].InstanceId;
console.log("Created instance", instanceId);
// Add tags to the instance
tagParams = {Resources: [instanceId], Tags: [
{
Key: 'Name',
Value: 'SDK Sample'
}
]};
// Create a promise on an EC2 service object
var tagPromise = new AWS.EC2({apiVersion: '2016-11-15'}).createTags(tagParams).promise();
// Handle promise's fulfilled/rejected states
tagPromise.then(
function(data) {
console.log("Instance tagged");
}).catch(
function(err) {
console.error(err, err.stack);
});
}).catch(
function(err) {
console.error(err, err.stack);
});
}
AWS test logs:
Execution log for request a83bae6e-2fbf-4d88-ad70-a683a83bdc41
Sun Aug 16 16:56:00 UTC 2020 : Starting execution for request: a83bae6e-2fbf-4d88-ad70-a683a83bdc41
Sun Aug 16 16:56:00 UTC 2020 : HTTP Method: GET, Resource Path: /
Sun Aug 16 16:56:00 UTC 2020 : Method request path: {}
Sun Aug 16 16:56:00 UTC 2020 : Method request query string: {}
Sun Aug 16 16:56:00 UTC 2020 : Method request headers: {}
Sun Aug 16 16:56:00 UTC 2020 : Method request body before transformations:
Sun Aug 16 16:56:00 UTC 2020 : Endpoint request URI: https://lambda.us-east-2.amazonaws.com/2015-03-31/functions/arn:aws:lambda:us-east-2:081348884123:function:hello/invocations
Sun Aug 16 16:56:00 UTC 2020 : Endpoint request headers: {x-amzn-lambda-integration-tag=a83bae6e-2fbf-4d88-ad70-a683a83bdc41, Authorization=**************************************************************************************************************************************************************************************************************************************************************************************59de14, X-Amz-Date=20200816T165600Z, x-amzn-apigateway-api-id=o2hkrbm1o4, X-Amz-Source-Arn=arn:aws:execute-api:us-east-2:081348884123:o2hkrbm1o4/test-invoke-stage/GET/, Accept=application/json, User-Agent=AmazonAPIGateway_o2hkrbm1o4, X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAAaCXVzLWVhc3QtMiJIMEYCIQCPi2S8PtDGsVK3w101D8B05/BCFGyUCzHeX8CT6tC7pAIhAJZCgpbZN94qCVdAgrQGlIIE+ABsO9MDkzh6Lf3WGq3IKr0DCNn//////////wEQARoMNzE4NzcwNDUzMTk1IgxILUqxpu50pB1cJmcqkQP/g+OuOqP7/zXYq8IAzTMolDThuprxjuzwDbmtAmS3adcmmHO25YxBQrId1XiR7ZEU7mq52k4A0nIFhBPkz2dZZIfr8MiLVCDx5tLok8j3lPZJOW+I3n7BVglTMtfQDpPYRSUcIQhOfsSnEEc+FKPzHyrzGsLeazIUHItf5L3xY4QO9tyDWnTXfcM2pp [TRUNCATED]
Sun Aug 16 16:56:00 UTC 2020 : Endpoint request body after transformations:
Sun Aug 16 16:56:00 UTC 2020 : Sending request to https://lambda.us-east-2.amazonaws.com/2015-03-31/functions/arn:aws:lambda:us-east-2:081348884123:function:hello/invocations
Sun Aug 16 16:56:02 UTC 2020 : Received response. Status: 200, Integration latency: 1952 ms
Sun Aug 16 16:56:02 UTC 2020 : Endpoint response headers: {Date=Sun, 16 Aug 2020 16:56:02 GMT, Content-Type=application/json, Content-Length=4, Connection=keep-alive, x-amzn-RequestId=f84212ea-38f8-40cc-b5c6-c12885e78392, x-amzn-Remapped-Content-Length=0, X-Amz-Executed-Version=$LATEST, X-Amzn-Trace-Id=root=1-5f396520-4d9dfcb6b965192c5fea0df6;sampled=0}
Sun Aug 16 16:56:02 UTC 2020 : Endpoint response body before transformations: null
Sun Aug 16 16:56:02 UTC 2020 : Method response body after transformations: null
Sun Aug 16 16:56:02 UTC 2020 : Method response headers: {X-Amzn-Trace-Id=Root=1-5f396520-4d9dfcb6b965192c5fea0df6;Sampled=0, Content-Type=application/json}
Sun Aug 16 16:56:02 UTC 2020 : Successfully completed execution
Sun Aug 16 16:56:02 UTC 2020 : Method completed with status: 200
Policy:
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"iam:*",
"organizations:DescribeAccount",
"organizations:DescribeOrganization",
"organizations:DescribeOrganizationalUnit",
"organizations:DescribePolicy",
"organizations:ListChildren",
"organizations:ListParents",
"organizations:ListPoliciesForTarget",
"organizations:ListRoots",
"organizations:ListPolicies",
"organizations:ListTargetsForPolicy"
],
"Resource": "*"
}
]
}
Edit:
Solved by adding EC2 Full Access permission to Lambda Function.

Answer 1

There were 2 issues as discovered through the comments.
The first was that the RunInstances task was not including the MinCount and MaxCount properties which led to no instances being launched.
Once this was fixed the next issue was a permissions issue due to the lack of permissions to run ec2:RunInstance or e2:CreateTags.
It is worth stating the best practice with permissions is to scope down to the minimal permissions that you require to successfully run.