Run and plan automatically sets the region

api/api.go

@@ -126,6 +126,11 @@ func NewClient(config *Config) (*Client, error) {
 	return client, nil
 }
 
+// SetRegion sets the region to forward API requests to.
+func (c *Client) SetRegion(region string) {
+	c.config.Region = region
+}
+
 // request is used to help build up a request
 type request struct {
 	config *Config

command/plan.go

@@ -44,6 +44,9 @@ Usage: nomad plan [options] <file>
   A structured diff between the local and remote job is displayed to
   give insight into what the scheduler will attempt to do and why.
 
+  If the job has specified the region, the -region flag and NOMAD_REGION
+  environment variable are overridden to the job's region.
+
 General Options:
 
   ` + generalOptionsUsage() + `
@@ -116,6 +119,11 @@ func (c *PlanCommand) Run(args []string) int {
 		return 1
 	}
 
+	// Force the region to be that of the job.
+	if r := job.Region; r != "" {
+		client.SetRegion(r)
+	}
+
 	// Submit the job
 	resp, _, err := client.Jobs().Plan(apiJob, diff, nil)
 	if err != nil {

command/run.go

@@ -37,6 +37,9 @@ Usage: nomad run [options] <file>
   exit code will be 2. Any other errors, including client connection
   issues or internal errors, are indicated by exit code 1.
 
+  If the job has specified the region, the -region flag and NOMAD_REGION
+  environment variable are overridden to the job's region.
+
 General Options:
 
   ` + generalOptionsUsage() + `
@@ -134,6 +137,11 @@ func (c *RunCommand) Run(args []string) int {
 		return 1
 	}
 
+	// Force the region to be that of the job.
+	if r := job.Region; r != "" {
+		client.SetRegion(r)
+	}
+
 	// Submit the job
 	evalID, _, err := client.Jobs().Register(apiJob, nil)
 	if err != nil {