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Terraform Module to Create Kubernetes cluster using acs-engine
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Terraform ACS-ENGINE Kubernetes

Terraform ACS-ENGINE is a module that can be used to create Production-Ready Kubernetes clusters easily.


In order to work the module requires a few binaries to be installed in the build machine:

  • acs-engine >= v.0.13.1
  • az cli
  • Linux Operating System


Below is the process done by the module step by step described:

  1. Build the file kubernetes.json based on parameters which represents the Cluster Definition. Valid parameters are specified in the official documentation for acs-engine.
  2. Run acs-engine generate command line in order to produce ARM Templates and all rsa keys/kubeconfigs.
  3. When acs-engine execution is finished, az-cli will associate subnets to the route-table in order to communicate masters/agents subnets.
  4. Upload to an already existing blob storage all generated output files to back it up and be able to reuse this information to upgrade/scale the cluster.

Note: The module's user must create a VNET with 2 subnets, 1 for master vms and 1 for agent vms. Any CIDR range could be specified.


module  "kubernetes_cluster"  {

    source  =  "hmarcelodn/acsenginek8scluster/azurerm"
    version  =  "1.0.3-beta.1"
    master\_first\_consecutive\_static\_ip  =  "${var.master\_first\_consecutive\_static\_ip}"
    subscription_id  =  "${var.subscription_id}"
    agent\_pool\_count  =  "${var.agent\_pool\_count}"    
    master_count  =  "${var.master_count}"    
    nodes\_subnet\_id  =  "${}"    
    master\_subnet\_id  =  "${}"    
    dns_prefix  =  "${var.dns_prefix}"    
    subscription_id  =  "${var.subscription_id}"    
    location_name  =  "${var.resource\_group\_location_short}"    
    cluster\_resource\_group  =  "${var.resource\_group\_name_iaas}"    
    agents\_subnet\_name  =  "${}"    
    masters\_subnet\_name  =  "${}"    
    vnet_name  =  "${azurerm\_virtual\}"    
    kubernetes\_release\_version  =  "${var.kubernetes\_release\_version}"    
    cluster\_k8s\_resource_group  = "${var.resource\_group\_name_iaas}"    
    master\_vm\_size  =  "${var.master\_vm\_size}"    
    node\_vm\_size  =  "${var.node\_vm\_size}"    
    service\_principal\_user  =  "${var.service\_principal\_user}"    
    service\_principal\_password  =  "${var.service\_principal\_password}"    
    service\_principal\_tenant  =  "${var.service\_principal\_tenant}"    
    terraform\_account\_name  =  "${var.terraform\_account\_name}"    
    terraform\_container\_name  =  "${var.terraform\_container\_name}"    
    terraform\_account\_key  =  "${var.terraform\_account\_key}"    
    rsa\_public\_key  =  "${var.rsa\_public\_key}"    
    service\_principal\_client_id  =  "${var.service\_principal\_client_id}"    
    service\_principal\_client_secret  =  "${var.service\_principal\_client_secret}"    
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