2015-06-21 16:41:38 -04:00
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<!--[metadata]>
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+++
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title = "port"
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description = "The port command description and usage"
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keywords = ["port, mapping, container"]
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[menu.main]
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parent = "smn_cli"
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+++
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<![end-metadata]-->
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# port
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2015-10-03 11:56:41 -04:00
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Usage: docker port [OPTIONS] CONTAINER [PRIVATE_PORT[/PROTO]]
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2015-06-21 16:41:38 -04:00
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List port mappings for the CONTAINER, or lookup the public-facing port that is
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NAT-ed to the PRIVATE_PORT
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2015-10-03 11:56:41 -04:00
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--help=false Print usage
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2015-06-21 16:41:38 -04:00
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You can find out all the ports mapped by not specifying a `PRIVATE_PORT`, or
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just a specific mapping:
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$ docker ps test
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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b650456536c7 busybox:latest top 54 minutes ago Up 54 minutes 0.0.0.0:1234->9876/tcp, 0.0.0.0:4321->7890/tcp test
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$ docker port test
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7890/tcp -> 0.0.0.0:4321
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9876/tcp -> 0.0.0.0:1234
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$ docker port test 7890/tcp
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0.0.0.0:4321
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$ docker port test 7890/udp
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2014/06/24 11:53:36 Error: No public port '7890/udp' published for test
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$ docker port test 7890
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0.0.0.0:4321
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