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

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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 <burt@fnal.gov>
This commit is contained in:
Burt Holzman
2022-03-23 10:42:05 -05:00
parent f049cba47c
commit cdda1924a0
1 changed files with 1 additions and 1 deletions
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2
pkg/machine/qemu/machine.go
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@ -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
}