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Deploy on GCP

This Terraform module is designed to deploy either EMQX or EMQX Enterprise on Google Cloud Platform (GCP). EMQX is a scalable and open-source MQTT broker that connects IoT devices.


OS/VersionEMQX Enterprise 4.4.xEMQX Open Source 4.4.xEMQX Open Source 5.0.x
ubuntu 20.04



This module requires Terraform to be installed. If you haven't installed it already, you can follow the official Terraform installation guide

GCP Credentials

To interact with the Google Cloud API, you need to authenticate. Follow this guide to get started with GCP authentication.

Deploying EMQX Cluster

Configuring EMQX4

To deploy EMQX version 4.4.x, provide the package URL in the emqx4_package variable. Replace ${emqx4_package_url} with your actual URL.

emqx4_package = ${emqx4_package_url}

Configuring EMQX5

To deploy EMQX version 5.0.x, provide the package URL in the emqx5_package variable. Replace ${emqx5_package_url} with your actual URL.

emqx5_package = ${emqx5_package_url}
is_emqx5 = true
emqx5_core_count = 1
emqx_instance_count = 4


The emq5_core_count should be less than or equal to emqx_instance_count.

Running terraform

To apply the Terraform module, navigate to the services/emqx_cluster directory and run the following commands:

cd services/emqx_cluster
terraform init
terraform plan
terraform apply -auto-approve


If you're deploying EMQX Enterprise and need more than 10 quotas, apply for an EMQX license and pass it in as a variable during the terraform apply command.

After successful execution, Terraform will output the load balancer IP and sensitive information such as tls_ca, tls_cert, and tls_key.

loadbalancer_ip = ${loadbalancer_ip}
tls_ca = <sensitive>
tls_cert = <sensitive>
tls_key = <sensitive>

Access various services using the provided ports, for example:

Dashboard: ${loadbalancer_ip}:18083
MQTT: ${loadbalancer_ip}:1883
MQTTS: ${loadbalancer_ip}:8883
WS: ${loadbalancer_public_ip}:8083
WSS: ${loadbalancer_public_ip}:8084

Enable SSL/TLS

Follow these configurations for SSL/TLS:

# default one-way SSL
enable_ssl_two_way = false
# common name for root ca
ca_common_name = "RootCA"
# common name for cert
common_name    = "Server"
# organization name
org = "EMQ"
# hours that the cert will valid for
validity_period_hours = 8760
# hours before its actual expiry time
early_renewal_hours = 720


EMQX 5.x does not currently support SSL/TLS.

To store CA, cert, and key to files for client connection, run:

terraform output -raw tls_ca > tls_ca.pem
terraform output -raw tls_cert > tls_cert.pem
terraform output -raw tls_key > tls_key.key

If a client needs to verify the server's certificate chain and host name, you should configure the hosts file:

${loadbalancer_ip} ${common_name}


After you've finished with the EMQX cluster, you can destroy it using the following command:

terraform destroy -auto-approve

This will delete all resources created by Terraform in this module.