AWS新手求助：TIBCO EMS快速启动中Bastion Auto Scaling Group创建失败

Hey there, sorry to hear you're stuck with the Bastion Auto Scaling Group (ASG) failure when setting up TIBCO EMS via the AWS Quick Start template. As someone who's worked through similar AWS deployment kinks, let's break down the most common culprits and how to fix them:

1. Verify IAM Permissions for the Quick Start Execution Role #

The Quick Start template relies on an IAM role to provision resources like the Bastion ASG. Missing key permissions here is a frequent cause of failure.

• Head to the IAM Console → Roles → Locate the role tied to your CloudFormation stack (it’ll likely have a name like AWSQuickStart-TIBCOEMS-*).
• Confirm it has permissions for autoscaling:CreateAutoScalingGroup, ec2:RunInstances, ec2:CreateSecurityGroup, and iam:PassRole (required to attach instance profiles).
• If permissions are missing, temporarily attach the managed policy AutoScalingFullAccess to test, then narrow down to least-privilege permissions once the deployment works.

2. Validate VPC and Subnet Setup #

Bastion instances need public subnets with proper internet access to launch successfully.

• Double-check that the subnets you selected for the Bastion are marked as public (their route table should include a route to an Internet Gateway).
• Ensure your VPC has DNS hostnames enabled: Go to VPC Console → Your VPC → Edit DNS hostnames → Set to "Yes".
• Confirm network ACLs and security groups aren’t blocking outbound traffic (like port 443 for AWS API calls) from the subnets.

3. Dig Into CloudFormation Stack Events for Exact Errors #

CloudFormation logs will tell you precisely why the ASG creation failed—don’t skip this step.

• Go to the CloudFormation Console → Your TIBCO EMS stack → Events tab.
• Look for events marked CREATE_FAILED for the Bastion ASG resource. The "Status reason" field will have specific details, such as:

  "Launching EC2 instance failed. The requested instance type is not supported in this Availability Zone"
  "Security group sg-xxxxxx does not exist"

• Address the exact error listed here first—it’s the fastest path to resolving the issue.

4. Check Instance Type Availability and EC2 Quotas #

Sometimes the template tries to use an instance type that’s either unavailable in your AZ or exceeds your account’s EC2 quota.

• Verify the Bastion instance type (check the CloudFormation template parameters) is supported in your selected Availability Zones. You can confirm this via the EC2 Console → Instance Types → Filter by region/AZ.
• Go to AWS Service Quotas → EC2 → Check if you have enough running instances of that type. If not, submit a quota increase request.

5. Confirm Bastion Instance Profile Configuration #

The Bastion ASG requires an instance profile to attach IAM roles to its instances.

• Make sure the instance profile specified in the template (usually BastionInstanceProfile) exists in IAM and includes necessary permissions (like AmazonSSMManagedInstanceCore if you plan to use SSM to access the bastion).
• If the instance profile is missing, create it manually and update the CloudFormation stack parameter to use it.

Once you’ve worked through these steps, try re-running the Quick Start template. If you hit a specific error message from the CloudFormation events, feel free to share it here and I can help dig deeper!

内容的提问来源于stack exchange，提问作者salah eddin Kali