bash Command not executing on Ec2 from Lambda

I'm trying to run certain bash on a Ec2 instance that I create in a Lambda function.

code

const instanceParams = {
      ImageId: "ami-0c101f26f147fa7fd",
      InstanceType: "t2.micro",
      MinCount: 1,
      MaxCount: 1,
      IamInstanceProfile: {
        Arn: iparn
      },
      UserData: Buffer.from(
        `#!/bin/bash
    export NANO_ID="${nanoId}" 
    echo $NANO_ID > test2.txt
    aws s3 cp ./test2.txt s3://s3storebucketName/test2.txt
    
    aws s3 cp s3://s3storebucketName/Script.js . > test3.txt 2>&1
    aws s3 cp ./test3.txt s3://s3storebucketName/test3.txt
    
    sudo yum install nodejs npm -y > test1.txt 2>&1
    aws s3 cp ./test1.txt s3://s3storebucketName/test1.txt
    
    npm install @aws-sdk/client-dynamodb @aws-sdk/client-s3 > test4.txt 2>&1
    aws s3 cp ./test4.txt s3://s3storebucketName/test4.txt
    
    node Script.js > test5.txt 2>&1
    aws s3 cp ./test5.txt s3://s3storebucketName/test5.txt
    `
      ).toString("base64")
    };
      const data = await ec2.send(new RunInstancesCommand(instanceParams));

above is the code for my instanceParams and how i call my RunInstancesCommand. The bash command that I have given in the UserData. It only runs till before sudo yum install nodejs npm -y > test1.txt 2>&1 meaning there is some issue with the suco yum install command. iparn has the role of AdministratorAccess, and it also has the security group with range of ports and protocols set to all.

I need help in installing nodejs and npm onto my ec2 instance. How should I go about it. what is the easiest way to get the packages installed.

I have to run it in this way. I shouldnt be SSHing into Ec2 via Lambda.

I tried using dnf instead of yum.

EDIT:

Above was part of the below code

"use strict";

// lambda/ScriptFunction.js
import {
  EC2Client,
  RunInstancesCommand,
  waitForInstanceRunning,
  TerminateInstancesCommand,
  CreateKeyPairCommand
} from "@aws-sdk/client-ec2";

import {
  IAMClient,
  GetRoleCommand,
  CreateInstanceProfileCommand,
  AddRoleToInstanceProfileCommand,
  ListInstanceProfilesCommand,
  GetInstanceProfileCommand
} from "@aws-sdk/client-iam";

export async function handler(event) {
  console.log("------------------------");
  try {
    for (const record of event.Records) {
      if (record.eventName === "INSERT") {
        await handleInsert(record);
      }
    }
    console.log("------------------------");
    return "Success!";
  } catch (error) {
    console.error(error);
    console.log("------------------------");
    return "Error";
  }
}

async function handleInsert(record) {
  console.log("Handling INSERT Event");
  const newImage = record.dynamodb.NewImage;
  const nanoId = newImage.nanoId.S;
  const res = await createEC2(nanoId);
  console.log(res);
  console.log("Done handling INSERT Event");
}

async function getInstanceProfileArn(iam, instanceProfileName) {
  try {
    const params = {
      InstanceProfileName: instanceProfileName
    };
    const data = await iam.send(new GetInstanceProfileCommand(params));
    console.log(data);
    return data.InstanceProfile.Arn;
  } catch (error) {
    console.error("Error arn:", error);
    throw error;
  }
}

async function createEC2(nanoId) {
  const ec2 = new EC2Client({});
  const iam = new IAMClient({});
  try {
    const ipname = "Ec2adminRole-instance-profile";
    const iparn = await getInstanceProfileArn(iam, ipname);
    console.log(iparn);
    console.log("Role added to instance profile successfully.");
    const instanceParams = {
      ImageId: "ami-0a699202e5027c10d",
      InstanceType: "t2.micro",
      MinCount: 1,
      MaxCount: 1,
      IamInstanceProfile: {
        Arn: iparn
      },
      UserData: Buffer.from(
        `#!/bin/bash
        update yum -y > test0.txt
        aws s3 cp ./test0.txt s3://s3samplebucket/test0.txt
        export NANO_ID="${nanoId}" 
        echo $NANO_ID > test2.txt
        aws s3 cp ./test2.txt s3://s3samplebucket/test2.txt
        aws s3 cp s3://s3samplebucket/Script.js . > test3.txt 2>&1
        aws s3 cp ./test3.txt s3://s3samplebucket/test3.txt
        yum install -y nodejs npm > test1.txt 2>&1
        aws s3 cp ./test1.txt s3://s3samplebucket/test1.txt
        npm install @aws-sdk/client-dynamodb @aws-sdk/client-s3 > test4.txt 2>&1
        aws s3 cp ./test4.txt s3://s3samplebucket/test4.txt
        node Script.js > test5.txt 2>&1
        aws s3 cp ./test5.txt s3://s3samplebucket/test5.txt`
      ).toString("base64")
    };
    const data = await ec2.send(new RunInstancesCommand(instanceParams));
    const instanceId = data.Instances[0].InstanceId;
    console.log(instanceId);
    await waitForInstanceRunning(
      { client: ec2, maxWaitTime: 300000000 },
      { InstanceIds: [instanceId] }
    );
    await new Promise((resolve) => setTimeout(resolve, 6e3));
    await ec2.send(
      new TerminateInstancesCommand({ InstanceIds: [instanceId] })
    );
    return {
      statusCode: 200,
      body: data
    };
  } catch (error) {
    console.error("Error creating EC2 instance:", error);
    throw error;
  }
}

The output on the text files is as such: test2.txt and test3.txt are created and the expected data is seen. test0.txt doesnt output anything, its an empty file. test4.txt and test5.txt are seen the s3 bucket mean they arent created.

I tried use the EventBridge to see if I cloud log the output of each command but it is just triggered event. Doesnt really say anything.