portmap

command
Version: v1.0.1 Latest Latest
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Published: Sep 7, 2021 License: Apache-2.0 Imports: 18 Imported by: 9

README

This document has moved to the containernetworking/cni.dev repo.

You can find it online here: https://cni.dev/plugins/current/meta/portmap/

Documentation

Overview

This is a post-setup plugin that establishes port forwarding - using iptables, from the host's network interface(s) to a pod's network interface.

It is intended to be used as a chained CNI plugin, and determines the container IP from the previous result. If the result includes an IPv6 address, it will also be configured. (IPTables will not forward cross-family).

This has one notable limitation: it does not perform any kind of reservation of the actual host port. If there is a service on the host, it will have all its traffic captured by the container. If another container also claims a given port, it will caputure the traffic - it is last-write-wins.

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