[provisioner-habitat] Allow custom service name (#17196)

This change allows the Habitat supervisor service name to be
configurable. Currently it is hard coded to `hab-supervisor`.

Signed-off-by: Nolan Davidson <ndavidson@chef.io>

builtin/provisioners/habitat/resource_provisioner.go

@@ -54,6 +54,7 @@ type provisioner struct {
 	SkipInstall      bool
 	UseSudo          bool
 	ServiceType      string
+	ServiceName      string
 	URL              string
 	Channel          string
 	Events           string
@@ -79,6 +80,11 @@ func Provisioner() terraform.ResourceProvisioner {
 				Optional: true,
 				Default:  "systemd",
 			},
+			"service_name": &schema.Schema{
+				Type:     schema.TypeString,
+				Optional: true,
+				Default:  "hab-supervisor",
+			},
 			"use_sudo": &schema.Schema{
 				Type:     schema.TypeBool,
 				Optional: true,
@@ -344,6 +350,7 @@ func decodeConfig(d *schema.ResourceData) (*provisioner, error) {
 		Services:         getServices(d.Get("service").(*schema.Set).List()),
 		UseSudo:          d.Get("use_sudo").(bool),
 		ServiceType:      d.Get("service_type").(string),
+		ServiceName:      d.Get("service_name").(string),
 		RingKey:          d.Get("ring_key").(string),
 		RingKeyContent:   d.Get("ring_key_content").(string),
 		PermanentPeer:    d.Get("permanent_peer").(bool),
@@ -569,9 +576,9 @@ func (p *provisioner) startHabSystemd(o terraform.UIOutput, comm communicator.Co
 
 	var command string
 	if p.UseSudo {
-		command = fmt.Sprintf("sudo echo '%s' | sudo tee /etc/systemd/system/hab-supervisor.service > /dev/null", &buf)
+		command = fmt.Sprintf("sudo echo '%s' | sudo tee /etc/systemd/system/%s.service > /dev/null", &buf, p.ServiceName)
 	} else {
-		command = fmt.Sprintf("echo '%s' | tee /etc/systemd/system/hab-supervisor.service > /dev/null", &buf)
+		command = fmt.Sprintf("echo '%s' | tee /etc/systemd/system/%s.service > /dev/null", &buf, p.ServiceName)
 	}
 
 	if err := p.runCommand(o, comm, command); err != nil {
@@ -579,9 +586,9 @@ func (p *provisioner) startHabSystemd(o terraform.UIOutput, comm communicator.Co
 	}
 
 	if p.UseSudo {
-		command = fmt.Sprintf("sudo systemctl start hab-supervisor")
+		command = fmt.Sprintf("sudo systemctl start %s", p.ServiceName)
 	} else {
-		command = fmt.Sprintf("systemctl start hab-supervisor")
+		command = fmt.Sprintf("systemctl start %s", p.ServiceName)
 	}
 	return p.runCommand(o, comm, command)
 }

website/docs/provisioners/habitat.html.markdown

@@ -49,6 +49,7 @@ There are 2 configuration levels, `supervisor` and `service`.  Configuration pla
 * `version (string)` - (Optional) The Habitat version to install on the remote machine.  If not specified, the latest available version is used.
 * `use_sudo (bool)` - (Optional) Use `sudo` when executing remote commands.  Required when the user specified in the `connection` block is not `root`.  (Defaults to `true`)
 * `service_type (string)` - (Optional) Method used to run the Habitat supervisor.  Valid options are `unmanaged` and `systemd`.  (Defaults to `systemd`)
+* `service_name (string)` - (Optional) The name of the Habitat supervisor service, if using an init system such as `systemd`. (Defaults to `hab-supervisor`)
 * `peer (string)` - (Optional) IP or FQDN of a supervisor instance to peer with. (Defaults to none)
 * `permanent_peer (bool)` - (Optional) Marks this supervisor as a permanent peer.  (Defaults to false)
 * `listen_gossip (string)` - (Optional) The listen address for the gossip system (Defaults to 0.0.0.0:9638)