aws-parallelcluster: ComputeFleet:Create fails in Cloudformation, but Compute Auto-Scaling Group is still created?

I am setting up a pcluster, and I have repeatedly gotten this error when I run create cluster:

• AWS::CloudFormation::Stack parallelcluster-galaxy-HPC The following resource (s) failed to create: [ComputeFleet].
• AWS::AutoScaling::AutoScalingGroup ComputeFleet Received 2 FAILURE signal(s) out of 2. Unable to satisfy 100% MinSuccessfulInstancesPercent requirement

This error message is reproducible throughout various changes to private and public subnets, OS, schedulers, cluster types, and groups. Sometimes I get 1 FAILURE signal, sometimes I get 2, I cannot predict when either case happens. Regardless, the resource is still created and I can see the resource, and it’s activity, in the console.

Below is the environment I’m trying to use:

Environment:

AWS ParallelCluster version 2.4

[aws]
aws_region_name = us-east-1

[cluster HPC]
key_name = *****
vpc_settings = vpc
base_os: alinux
scheduler: slurm
initial_queue_size = 2
maintain_initial_size = true
placement_group = DYNAMIC
placement = compute
master instance type = c5.large
compute instance type = c5.large

[vpc vpc]
vpc_id: vpc-*****
master_subnet_id = subnet-*****
vpc_security_group_id = sg-*****

[global]
cluster_template = galaxy-HPC
update_check = true
sanity_check = true

[aliases]
ssh = ssh {CFN_USER}@{MASTER_IP} {ARGS}

Additional context:

• Currently I am only trying to get the stack to create successfully, there are no pre or post install scripts.
• My security group allows inbound traffic from ports 22, 80, 443, 8080, 8081, 8443. It also allows all traffic on any port coming from EC2’s sharing the same security group.
• As of right now, my Master node creates successfully; there is no termination and re initializing so I can SSH in. However, in the compute fleet, all my EC2 instances are created, fail a health check, are terminated, and new EC2’s are created, over and over. Thus I cannot SSH into my compute nodes at the moment.

Attached are my log files as requested, as well as my jobwatcher, slurmctld, and sqswatcher logs. I would greatly appreciate any help!

cloud-init.txt cloud-init-output.txt cfn-init.txt jobwatcher.txt sqswatcher.txt slurmctld.txt