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81d6d90195
Handling is improved by: - Inverting detection logic so all incompatible NetNS modes that can't be used with the `--publish` option will now print a warning to the user. - Updating the --publish documentation - Extract detection logic out to it's own function with a note to keep docs in sync. Note: path mode was added after this warning logic was added: - https://github.com/containers/podman/pull/8230 - https://github.com/containers/podman/pull/16386 Relates-to: https://github.com/containers/podman/issues/26663 Signed-off-by: Lewis Roy <lewis@redhat.com>
27 lines
1.3 KiB
Markdown
27 lines
1.3 KiB
Markdown
####> This option file is used in:
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####> podman create, pod create, run
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####> If file is edited, make sure the changes
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####> are applicable to all of those.
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#### **--publish**, **-p**=*[[ip:][hostPort]:]containerPort[/protocol]*
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Publish a container's port, or range of ports,<<| within this pod>> to the host.
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Both *hostPort* and *containerPort* can be specified as a range of ports.
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When specifying ranges for both, the number of container ports in the
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range must match the number of host ports in the range.
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If host IP is set to 0.0.0.0 or not set at all, the port is bound on all IPs on the host.
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By default, Podman publishes TCP ports. To publish a UDP port instead, give
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`udp` as protocol. To publish both TCP and UDP ports, set `--publish` twice,
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with `tcp`, and `udp` as protocols respectively. Rootful containers can also
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publish ports using the `sctp` protocol.
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Host port does not have to be specified (e.g. `podman run -p 127.0.0.1::80`).
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If it is not, the container port is randomly assigned a port on the host.
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Use **podman port** to see the actual mapping: `podman port $CONTAINER $CONTAINERPORT`.
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Port publishing is only supported for containers utilizing their own network namespace
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through `bridge` networks, or the `pasta` and `slirp4netns` network modes.
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