diff options
Diffstat (limited to 'cmd/podman/common')
| -rw-r--r-- | cmd/podman/common/util.go | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/cmd/podman/common/util.go b/cmd/podman/common/util.go index ce323a4ba..6c8c22147 100644 --- a/cmd/podman/common/util.go +++ b/cmd/podman/common/util.go @@ -184,22 +184,24 @@ func parseSplitPort(hostIP, hostPort *string, ctrPort string, protocol *string) } if hostPort != nil { if *hostPort == "" { - return newPort, errors.Errorf("must provide a non-empty container host port to publish") - } - hostStart, hostLen, err := parseAndValidateRange(*hostPort) - if err != nil { - return newPort, errors.Wrapf(err, "error parsing host port") - } - if hostLen != ctrLen { - return newPort, errors.Errorf("host and container port ranges have different lengths: %d vs %d", hostLen, ctrLen) + // Set 0 as a placeholder. The server side of Specgen + // will find a random, open, unused port to use. + newPort.HostPort = 0 + } else { + hostStart, hostLen, err := parseAndValidateRange(*hostPort) + if err != nil { + return newPort, errors.Wrapf(err, "error parsing host port") + } + if hostLen != ctrLen { + return newPort, errors.Errorf("host and container port ranges have different lengths: %d vs %d", hostLen, ctrLen) + } + newPort.HostPort = hostStart } - newPort.HostPort = hostStart + } else { + newPort.HostPort = newPort.ContainerPort } hport := newPort.HostPort - if hport == 0 { - hport = newPort.ContainerPort - } logrus.Debugf("Adding port mapping from %d to %d length %d protocol %q", hport, newPort.ContainerPort, newPort.Range, newPort.Protocol) return newPort, nil |