Run instances with IMDSv2

️NOTE THAT THIS FORK IS MAINTAINED FOR CRITICAL BUG FIXES AFFECTING RUNNING COSTS ONLY. NO OTHER CONTRIBUTIONS WILL BE ACCEPTED. ️

What critical bug this MR is fixing?

Closes #15 (closed)

How does this change help reduce cost of usage? What scale of cost reduction is it?

In what scenarios is this change usable with GitLab Runner's docker+machine executor?

drivers/amazonec2/amazonec2.go

@@ -44,6 +44,7 @@ const (
 	defaultSSHUser              = "ubuntu"
 	defaultSpotPrice            = "0.50"
 	defaultBlockDurationMinutes = 0
+	defaultMetadataToken        = "optional"
 )
 
 const (
@@ -314,6 +315,7 @@ func NewDriver(hostName, storePath string) *Driver {
 			MachineName: hostName,
 			StorePath:   storePath,
 		},
+		MetadataToken: defaultMetadataToken,
 	}
 
 	driver.clientFactory = driver.buildClient
@@ -1324,6 +1326,10 @@ func (d *Driver) getRegionZone() string {
 	return d.Zone
 }
 
+func (d *Driver) getMetadataTokenSetting() string {
+	return d.MetadataToken
+}
+
 func generateId() string {
 	rb := make([]byte, 10)
 	_, err := rand.Read(rb)