null_resource for adding custom domain to AWS Elasticsearch with Terraform

gistfile1.txt

resource "null_resource" "domain_custom_endpoint" {
  triggers = {
    associations = module.elasticsearch-cluster.domain_hostname
  }
  provisioner "local-exec" {
    interpreter = ["/bin/bash", "-c"]
    command = <<EOF
aws es update-elasticsearch-domain-config --domain-name ${local.domain-name} --domain-endpoint-options EnforceHTTPS=true,TLSSecurityPolicy=Policy-Min-TLS-1-0-2019-07,CustomEndpointEnabled=true,CustomEndpoint=${local.cust_domain_name}.,CustomEndpointCertificateArn=${local.cert_arn}
EOF
  }
}