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-rw-r--r--cmd/podman/common/util.go26
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