README
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Host Port Manager
The Host Port Managers maps ports from the Host to the specified Container Port. It can also specify the Host IP that should be mapped to the container IP. For security reasons, it also opens a socket in the host to avoid any process in the system that could interfere with the traffic that is being port mapped.
This code is copied from the kubernetes/kubernetes repo Since Kubernetes started the deprecation of that part of the code in #94624, it is missing some fixes and the features required to operate correctly in dual stack environments.
The kubernetes/kubernetes repo has a fix where the host port manager always opens a socket in all addresses, instead of leveraging the HostIP field: #94382
The current implementation only maps ports for the first IP of each IP family obtained from the CNI results.
Documentation
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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type HostPortManager ¶
type HostPortManager interface {
// Add implements port mappings.
// id should be a unique identifier for a pod, e.g. podSandboxID.
// podPortMapping is the associated port mapping information for the pod.
Add(id string, podPortMapping *PodPortMapping) error
// Remove cleans up matching port mappings
// Remove must be able to clean up port mappings without pod IP
Remove(id string, podPortMapping *PodPortMapping) error
}
HostPortManager is an interface for adding and removing hostport for a given pod sandbox.
func NewHostportManager ¶
func NewHostportManager() HostPortManager
NewHostportManager creates a new HostPortManager.
func NewNoopHostportManager ¶
func NewNoopHostportManager() HostPortManager
NewNoopHostportManager creates a new HostPortManager.
type PodPortMapping ¶
type PodPortMapping struct {
Namespace string
Name string
PortMappings []*PortMapping
IP net.IP
}
PodPortMapping represents a pod's network state and associated container port mappings.
Source Files