How to fix Error: dial tcp: connection refused in Terraform

terraform plan -parallelism=5
terraform apply -parallelism=3

terraform {
  required_version = ">= 1.0"
  required_providers {
    aws = {
      source = "hashicorp/aws"
    }
  }
}

export TF_CLI_ARGS_plan="-parallelism=5"
export TF_CLI_ARGS_apply="-parallelism=5"
terraform plan

# For local services like Docker or Kubernetes
systemctl status docker
docker ps
kubectl cluster-info

# Test network connectivity to the endpoint
curl -v https://your-api-endpoint.example.com
telnet hostname port-number
nc -zv hostname port-number

# Kubernetes provider
provider "kubernetes" {
  host  = "https://localhost:6443"
  token = var.token
}

# Docker provider
provider "docker" {
  host = "unix:///var/run/docker.sock"  # Linux
  # host = "npipe:////.//pipe//docker_engine"  # Windows
}

# Custom provider with endpoint
provider "myservice" {
  host = "https://api.myservice.com:443"
  port = 443
}

export http_proxy=http://proxy.company.com:8080
export https_proxy=http://proxy.company.com:8080
export no_proxy=localhost,127.0.0.1,internal.company.com

terraform plan

export TF_LOG=DEBUG
terraform plan 2>&1 | tee terraform-debug.log

export TF_LOG=DEBUG
export OCI_GO_SDK_DEBUG=v
terraform plan

# Linux - check firewall status
sudo ufw status
sudo firewall-cmd --list-all

# Windows - check Windows Firewall
netsh advfirewall show allprofiles

# AWS Security Group - check egress rules
# Azure - check Network Security Group rules
# GCP - check Firewall policies