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k8s.io/kubernetes / cmd / kubeadm / app / util / initsystem

Package initsystem

v1.19.2
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The latest major version is .

Published: 1 day ago | License: Apache-2.0 | Module: k8s.io/kubernetes

Index

type InitSystem

type InitSystem interface {
	// return a string describing how to enable a service
	EnableCommand(service string) string

	// ServiceStart tries to start a specific service
	ServiceStart(service string) error

	// ServiceStop tries to stop a specific service
	ServiceStop(service string) error

	// ServiceRestart tries to reload the environment and restart the specific service
	ServiceRestart(service string) error

	// ServiceExists ensures the service is defined for this init system.
	ServiceExists(service string) bool

	// ServiceIsEnabled ensures the service is enabled to start on each boot.
	ServiceIsEnabled(service string) bool

	// ServiceIsActive ensures the service is running, or attempting to run. (crash looping in the case of kubelet)
	ServiceIsActive(service string) bool
}

InitSystem is the interface that describe behaviors of an init system

func GetInitSystem

func GetInitSystem() (InitSystem, error)

GetInitSystem returns an InitSystem for the current system, or nil if we cannot detect a supported init system. This indicates we will skip init system checks, not an error.

type OpenRCInitSystem

type OpenRCInitSystem struct{}

OpenRCInitSystem defines openrc

func (OpenRCInitSystem) EnableCommand

func (openrc OpenRCInitSystem) EnableCommand(service string) string

EnableCommand return a string describing how to enable a service

func (OpenRCInitSystem) ServiceExists

func (openrc OpenRCInitSystem) ServiceExists(service string) bool

ServiceExists ensures the service is defined for this init system. openrc writes to stderr if a service is not found or not enabled this is in contrast to systemd which only writes to stdout. Hence, we use the Combinedoutput, and ignore the error.

func (OpenRCInitSystem) ServiceIsActive

func (openrc OpenRCInitSystem) ServiceIsActive(service string) bool

ServiceIsActive ensures the service is running, or attempting to run. (crash looping in the case of kubelet)

func (OpenRCInitSystem) ServiceIsEnabled

func (openrc OpenRCInitSystem) ServiceIsEnabled(service string) bool

ServiceIsEnabled ensures the service is enabled to start on each boot.

func (OpenRCInitSystem) ServiceRestart

func (openrc OpenRCInitSystem) ServiceRestart(service string) error

ServiceRestart tries to reload the environment and restart the specific service

func (OpenRCInitSystem) ServiceStart

func (openrc OpenRCInitSystem) ServiceStart(service string) error

ServiceStart tries to start a specific service

func (OpenRCInitSystem) ServiceStop

func (openrc OpenRCInitSystem) ServiceStop(service string) error

ServiceStop tries to stop a specific service

type SystemdInitSystem

type SystemdInitSystem struct{}

SystemdInitSystem defines systemd

func (SystemdInitSystem) EnableCommand

func (sysd SystemdInitSystem) EnableCommand(service string) string

EnableCommand return a string describing how to enable a service

func (SystemdInitSystem) ServiceExists

func (sysd SystemdInitSystem) ServiceExists(service string) bool

ServiceExists ensures the service is defined for this init system.

func (SystemdInitSystem) ServiceIsActive

func (sysd SystemdInitSystem) ServiceIsActive(service string) bool

ServiceIsActive will check is the service is "active". In the case of crash looping services (kubelet in our case) status will return as "activating", so we will consider this active as well.

func (SystemdInitSystem) ServiceIsEnabled

func (sysd SystemdInitSystem) ServiceIsEnabled(service string) bool

ServiceIsEnabled ensures the service is enabled to start on each boot.

func (SystemdInitSystem) ServiceRestart

func (sysd SystemdInitSystem) ServiceRestart(service string) error

ServiceRestart tries to reload the environment and restart the specific service

func (SystemdInitSystem) ServiceStart

func (sysd SystemdInitSystem) ServiceStart(service string) error

ServiceStart tries to start a specific service

func (SystemdInitSystem) ServiceStop

func (sysd SystemdInitSystem) ServiceStop(service string) error

ServiceStop tries to stop a specific service

Package Files

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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