systemd

Documentation

Overview

Package systemd provides the common systemd helper functions.

Index

• func CheckVersion() (string, []string, error)
• func DaemonReload(ctx context.Context) ([]byte, error)
• func GetLatestJournalctlOutput(ctx context.Context, svcName string) (string, error)
• func GetUptime(service string) (time.Duration, error)
• func IsActive(service string) (bool, error)
• func JournalctlExists() bool
• func SystemctlExists() bool
• func SystemdExists() bool
• type DbusConn
  • func NewDbusConn(ctx context.Context) (*DbusConn, error)
  • func (c *DbusConn) Close()
  • func (c *DbusConn) IsActive(ctx context.Context, unitName string) (bool, error)

Functions

func CheckVersion

func CheckVersion() (string, []string, error)

CheckVersion returns the systemd version by running `systemd --version`.

func DaemonReload

func DaemonReload(ctx context.Context) ([]byte, error)

func GetLatestJournalctlOutput

func GetLatestJournalctlOutput(ctx context.Context, svcName string) (string, error)

Fetches the latest/recent journal outputs using "journalctl". Equivalent to "journalctl -xeu [service name].service --no-pager".

func GetUptime

func GetUptime(service string) (time.Duration, error)

GetUptime returns the uptime duration of the systemd service. ref. https://github.com/kubernetes/node-problem-detector/blob/c4e5400ed6d7ca30d3a803248ae5b55c53557e59/pkg/healthchecker/health_checker_linux.go

func IsActive

func IsActive(service string) (bool, error)

IsActive returns true if the systemd service is active.

func JournalctlExists

func JournalctlExists() bool

func SystemctlExists

func SystemctlExists() bool

func SystemdExists

func SystemdExists() bool

Types

type DbusConn

type DbusConn struct {
	// contains filtered or unexported fields
}

func NewDbusConn

func NewDbusConn(ctx context.Context) (*DbusConn, error)

Caller should explicitly close the connection by calling Close() on returned connection object

func (*DbusConn) Close

func (c *DbusConn) Close()

func (*DbusConn) IsActive

func (c *DbusConn) IsActive(ctx context.Context, unitName string) (bool, error)