In preparation for parallelism, emit all log lines prefixed by hostname

src/main.go

@@ -64,6 +64,8 @@ func main() {
 					keyFile = findDefaultSSHKey()
 					if keyFile == "" {
 						log.Fatal("No SSH key found and no password provided")
+					} else {
+						fmt.Printf("Using SSH key: %s\n", keyFile)
 					}
 				}
 			}
@@ -95,7 +97,7 @@ func main() {
 			totalCount := len(devicesToProcess)
 
 			for hostname, deviceConfig := range devicesToProcess {
-				fmt.Printf("\nProcessing device: %s (type: %s)\n", hostname, deviceConfig.Type)
+				fmt.Printf("\n%s: Processing device (type: %s)\n", hostname, deviceConfig.Type)
 
 				user := deviceConfig.User
 				commands := deviceConfig.Commands
@@ -111,12 +113,12 @@ func main() {
 				}
 
 				if user == "" {
-					fmt.Printf("No user specified for %s, skipping\n", hostname)
+					fmt.Printf("%s: No user specified, skipping\n", hostname)
 					continue
 				}
 
 				if len(commands) == 0 {
-					fmt.Printf("No commands specified for %s, skipping\n", hostname)
+					fmt.Printf("%s: No commands specified, skipping\n", hostname)
 					continue
 				}
 
@@ -125,7 +127,7 @@ func main() {
 
 				// Connect and backup
 				if err := backup.Connect(); err != nil {
-					fmt.Printf("Failed to connect to %s: %v\n", hostname, err)
+					fmt.Printf("%s: Failed to connect: %v\n", hostname, err)
 					continue
 				}
 
@@ -133,9 +135,9 @@ func main() {
 				backup.Disconnect()
 
 				if err != nil {
-					fmt.Printf("Backup failed for %s: %v\n", hostname, err)
+					fmt.Printf("%s: Backup failed: %v\n", hostname, err)
 				} else {
-					fmt.Printf("Backup completed for %s\n", hostname)
+					fmt.Printf("%s: Backup completed\n", hostname)
 					successCount++
 				}
 			}