Can't create Application Load balancer, stuck on "in progress"

Question

I am trying to create an application load balancer, but for some reason it gets stuck. I tried using both console and from terraform as well. 
Initially I tried using the console, it couldnt load the security groups dropdown, I didn't bother much as I could edit them later. ![Enter image description here](/media/postImages/original/IMUTxU-sjURc2HWotZkZMoKA)
and proceeded with creating load balancer, but it got stucked, waited for more than 30 minutes but no luck.![Enter image description here](/media/postImages/original/IMKTpyKABxTDqmdKmw20gUZw)

So I thought to create it using terraform if the console had any bugs. I did manage to create lb but wasnt able to add any listerner, it similarly got stuck creating lb, tried from console as well. Strangely, the security group wasn't able to load after creating lb also.![Enter image description here](/media/postImages/original/IMe-vP8-MhT8mk2qLxBXTNYA)

Sebthar · Answer

Got the same problem here. I just can't add security groups (infinite loading) and once i click the create button, it just stays stuck in creating state for ages.... Did you manage to solve your problem ?

Sebthar

answered 6 months ago

re:Post Agent · Answer

The issue you're experiencing with creating an Application Load Balancer (ALB) that gets stuck "in progress" could be due to several factors. Here are some potential causes and solutions to consider:

1. Subnet Configuration: Ensure that you have selected at least two subnets in different Availability Zones when creating the load balancer. ALBs require a minimum of two subnets across different AZs to function properly.

2. VPC and Subnet Connectivity: Verify that the VPC and subnets you're using for the load balancer have proper internet connectivity. For internet-facing load balancers, ensure you're using public subnets.

3. Security Group Issues: The fact that the security groups dropdown isn't loading suggests there might be an issue with your VPC configuration or IAM permissions. Double-check that your IAM role has the necessary permissions to view and manage security groups.

4. Network ACLs: Ensure that your Network ACLs are not blocking necessary traffic for the load balancer creation process.

5. AWS Service Health: Check the AWS Service Health Dashboard to see if there are any ongoing issues in your region that might be affecting the creation of resources.

6. Timeout and Retry: Sometimes, the process might timeout due to temporary network issues. Try creating the load balancer again after a short wait.

7. CLI or SDK Alternative: If the console is consistently problematic, try using the AWS CLI or SDK to create the load balancer. This might provide more detailed error messages if there are underlying issues.

8. IAM Permissions: Ensure that your IAM user or role has sufficient permissions to create and manage load balancers, including associated resources like security groups and EC2 instances.

If the issue persists after checking these points, it would be advisable to contact AWS Support for further assistance, as they can provide more detailed insights based on your specific account and configuration.  
**Sources**  
[EB Create fails to create "ElasticLoadBalancer" must specify 2 Availability zones | AWS re:Post](https://repost.aws/questions/QUaXyDS_nPTgW3I91GxxQS9Q/eb-create-fails-to-create-elasticloadbalancer-must-specify-2-availability-zones)  
["EB create" fails to "create load balancer" | AWS re:Post](https://repost.aws/questions/QUtQNKoV05QyGfutUNXuzP0w/eb-create-fails-to-create-load-balancer)  
[Elastic Load Balancing - Version 2 examples using AWS CLI - AWS SDK Code Examples](https://docs.aws.amazon.com/code-library/latest/ug/cli_2_elastic-load-balancing-v2_code_examples.html)

Can't create Application Load balancer, stuck on "in progress"

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