Merge pull request #8 from utilitywarehouse/auto-dl-agent

Automatically download the ssh-key-agent if not present

terraform/main.tf

@@ -19,3 +19,13 @@ data "ignition_systemd_unit" "ssh-key-agent" {
     }
   )
 }
+
+data "ignition_systemd_unit" "ssh-key-agent-download" {
+  name    = "ssh-key-agent-download.service"
+  enabled = var.enabled
+  content = templatefile("${path.module}/resources/ssh-key-agent-download.service",
+    {
+      source = "https://github.com/utilitywarehouse/ssh-key-agent/releases/download/${var.agent_version}/ssh-key-agent_${var.agent_version}_linux_amd64"
+    }
+  )
+}

terraform/outputs.tf

@@ -2,6 +2,10 @@ output "unit" {
   value = data.ignition_systemd_unit.ssh-key-agent.rendered
 }
 
+output "download-unit" {
+  value = data.ignition_systemd_unit.ssh-key-agent-download.rendered
+}
+
 output "file" {
   value = data.ignition_file.ssh-key-agent.rendered
 }

terraform/resources/ssh-key-agent-download.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=ssh-key-agent-download
+Wants=network-online.target
+After=network-online.target
+Before=ssh-key-agent.service
+
+[Service]
+Type=oneshot
+Restart=on-failure
+ExecStart=-/usr/bin/wget -N -q -O "/opt/bin/ssh-key-agent" "${source}"
+ExecStart=-/usr/bin/chmod 755 /opt/bin/ssh-key-agent
+ExecStartPost=/bin/systemctl disable ssh-key-agent-download.service
+
+[Install]
+WantedBy=multi-user.target