swarm updates

examples/swarm-cluster/README.md

@@ -4,6 +4,10 @@ Set an environment variable containing the Vultr API key:
 
     export VULTR_API_KEY=<your-vultr-api-key>
 
+    or
+
+Save vultr api key in a file `~/.creds/vultr_api_token`
+
 Note: as an alternative, the API key can be specified in configuration as shown below.
 
     // Configure the Vultr provider.
@@ -19,3 +23,9 @@ Note: as an alternative, the API key can be specified in configuration as shown
 or
 
     brew install jq
+
+
+
+the same on digital ocean
+
+https://knpw.rs/blog/docker-swarm-terraform

examples/swarm-cluster/manager.tf

@@ -1,3 +1,7 @@
+provider "vultr" {
+  api_key = "${chomp(file("~/.creds/vultr_api_token"))}"
+}
+
 // Create swarm_manager
 
 resource "vultr_instance" "swarm_manager" {
@@ -6,7 +10,7 @@ resource "vultr_instance" "swarm_manager" {
   region_id         = "${data.vultr_region.my_region.id}"
   plan_id           = "${data.vultr_plan.manager_plan.id}"
   os_id             = "${data.vultr_os.my_os.id}"
-  ssh_key_ids       = ["${data.vultr_ssh_key.nilesh.id}"]
+  ssh_key_ids       = ["${vultr_ssh_key.nilesh.id}"]
   hostname          = "${terraform.workspace}-manager-${count.index}"
   tag               = "manager"
   private_networking= true

examples/swarm-cluster/output.tf

@@ -1,11 +1,8 @@
 output "workspace" {
   value = "${terraform.workspace}"
 }
-output "swarm_manager_token" {
-  value = "${data.external.swarm_tokens.result.manager}"
-}
-output "swarm_worker_token" {
-  value = "${data.external.swarm_tokens.result.worker}"
+output "swarm_tokens" {
+  value = "${data.external.swarm_tokens.result}"
 }
 output "manager_count" {
   value = ["${vultr_instance.swarm_manager.count}"]

examples/swarm-cluster/ssh_key.tf

@@ -0,0 +1,5 @@
+// Create a new SSH key.
+resource "vultr_ssh_key" "nilesh" {
+  name       = "nilesh"
+  public_key = "${file("~/.ssh/id_rsa.pub")}"
+}

examples/swarm-cluster/worker.tf

@@ -6,7 +6,7 @@ resource "vultr_instance" "swarm_worker" {
   region_id         = "${data.vultr_region.my_region.id}"
   plan_id           = "${data.vultr_plan.worker_plan.id}"
   os_id             = "${data.vultr_os.my_os.id}"
-  ssh_key_ids       = ["${data.vultr_ssh_key.nilesh.id}"]
+  ssh_key_ids       = ["${vultr_ssh_key.nilesh.id}"]
   hostname          = "${terraform.workspace}-worker-${count.index}"
   tag               = "worker"
   private_networking= true