Explicitly use IPv4 to check if podman-machine VM is listening

When starting a VM that has been configured with volume mounts, the podman client attempts to connect via TCP to localhost, which runs gvproxy to proxy an ephemeral port to the VM's ssh port. Previously, gvproxy was listening on all interfaces and IP addresses, but this behavior has changed to listening only on the IPv4 loopback address. Without this change, if a newer build of gvproxy is used, a podman machine configured with volume mounts will hang forever after "podman machine start" with "Waiting for VM ...". [NO NEW TESTS NEEDED] Signed-off-by: Burt Holzman <[email protected]>
containers · Mar 23, 2022 · cdda192 · cdda192
1 parent f049cba
commit cdda192
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkg/machine/qemu/machine.go b/pkg/machine/qemu/machine.go
@@ -782,7 +782,7 @@ func (v *MachineVM) isRunning() (bool, error) {
 
 func (v *MachineVM) isListening() bool {
 	// Check if we can dial it
-	conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", "localhost", v.Port), 10*time.Millisecond)
+	conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", "127.0.0.1", v.Port), 10*time.Millisecond)
 	if err != nil {
 		return false
 	}