Enhance MongoDB installation script: add logging, error handling, and…

terraform/modules/ec2/main.tf

@@ -45,35 +45,109 @@ resource "aws_instance" "mongodb" {
     volume_type = "gp3"
   }
 
+  ebs_block_device {
+    device_name = "/dev/sdf"
+    volume_size = var.mongodb_data_volume_size
+    volume_type = "gp3"
+    encrypted   = true
+    delete_on_termination = false
+  }
+
   user_data = <<-EOF
               #!/bin/bash
-              set -e
+              exec > >(tee /var/log/user-data.log) 2>&1
+              set -x
+
+              echo "Starting MongoDB installation at $(date)"
 
               # Update system
               yum update -y
 
-              # Add MongoDB repository
+              # Setup MongoDB data volume
+              echo "Setting up MongoDB data volume"
+
+              # Wait for the EBS volume to be available
+              sleep 10
+
+              # Identify the device (it might be /dev/sdf, /dev/xvdf, or /dev/nvme1n1 depending on instance type)
+              DATA_DEVICE=""
+              if [ -e /dev/nvme1n1 ]; then
+                  DATA_DEVICE="/dev/nvme1n1"
+              elif [ -e /dev/xvdf ]; then
+                  DATA_DEVICE="/dev/xvdf"
+              elif [ -e /dev/sdf ]; then
+                  DATA_DEVICE="/dev/sdf"
+              fi
+
+              if [ -z "$DATA_DEVICE" ]; then
+                  echo "ERROR: Could not find the MongoDB data volume"
+                  exit 1
+              fi
+
+              echo "Found data device: $DATA_DEVICE"
+
+              # Format the volume with XFS (recommended for MongoDB)
+              mkfs.xfs $DATA_DEVICE
+
+              # Create mount point
+              mkdir -p /data/mongodb
+
+              # Mount the volume
+              mount $DATA_DEVICE /data/mongodb
+
+              # Add to fstab for persistent mounting
+              UUID=$(blkid -s UUID -o value $DATA_DEVICE)
+              echo "UUID=$UUID /data/mongodb xfs defaults,nofail 0 2" >> /etc/fstab
+
+              # Set ownership to mongodb user (will be created during installation)
+              echo "MongoDB data volume mounted at /data/mongodb"
+
+              # Add MongoDB repository (using Amazon Linux 2 repo which is compatible)
               cat > /etc/yum.repos.d/mongodb-org-7.0.repo <<'REPO'
 [mongodb-org-7.0]
 name=MongoDB Repository
-baseurl=https://repo.mongodb.org/yum/amazon/2023/mongodb-org/7.0/x86_64/
+baseurl=https://repo.mongodb.org/yum/amazon/2/mongodb-org/7.0/x86_64/
 gpgcheck=1
 enabled=1
 gpgkey=https://pgp.mongodb.com/server-7.0.asc
 REPO
 
+              echo "MongoDB repository added"
+
               # Install MongoDB
               yum install -y mongodb-org
 
-              # Configure MongoDB to listen on all interfaces
+              if [ $? -ne 0 ]; then
+                  echo "ERROR: Failed to install MongoDB"
+                  exit 1
+              fi
+
+              echo "MongoDB installed successfully"
+
+              # Set correct ownership for MongoDB data directory
+              chown -R mongod:mongod /data/mongodb
+
+              # Configure MongoDB to listen on all interfaces and use the new data directory
               sed -i 's/bindIp: 127.0.0.1/bindIp: 0.0.0.0/' /etc/mongod.conf
+              sed -i 's|dbPath: /var/lib/mongo|dbPath: /data/mongodb|' /etc/mongod.conf
+
+              echo "MongoDB configured to listen on all interfaces and use /data/mongodb for data"
 
               # Start and enable MongoDB
               systemctl start mongod
               systemctl enable mongod
 
-              # Log completion
-              echo "MongoDB installation completed" > /var/log/mongodb-install.log
+              # Verify MongoDB is running
+              sleep 5
+              systemctl is-active mongod
+
+              if [ $? -eq 0 ]; then
+                  echo "MongoDB installation completed successfully at $(date)"
+              else
+                  echo "ERROR: MongoDB service failed to start"
+                  systemctl status mongod
+                  exit 1
+              fi
               EOF
 
   tags = {

terraform/modules/ec2/variables.tf

@@ -38,3 +38,9 @@ variable "root_volume_size" {
   type        = number
   default     = 8
 }
+
+variable "mongodb_data_volume_size" {
+  description = "MongoDB data volume size in GB"
+  type        = number
+  default     = 20
+}

terraform/stacks/production/terraform.tfvars

@@ -4,4 +4,4 @@ instance_type    = "t3.large"
 key_name         = "ashish-test-kp"
 vpc_id           = "vpc-0c4669393c94b8f86"
 ami_id           = "ami-075b5421f670d735c" # Amazon Linux 2023
-root_volume_size = 20
+root_volume_size = 8

terraform/stacks/staging/terraform.tfvars

@@ -4,4 +4,4 @@ instance_type    = "t3.small"
 key_name         = "ashish-test-kp"
 vpc_id           = "vpc-0c4669393c94b8f86"
 ami_id           = "ami-075b5421f670d735c" # Amazon Linux 2023
-root_volume_size = 10
+root_volume_size = 8