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systemd_linux.go
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systemd_linux.go
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package daemon
import (
"errors"
"os"
"github.com/gravitl/netclient/ncutils"
"github.com/gravitl/netmaker/logger"
"golang.org/x/exp/slog"
)
// setupSystemDDaemon - sets system daemon for supported machines
func setupSystemDDaemon() error {
systemservice := `[Unit]
Description=Netclient Daemon
Documentation=https://docs.netmaker.org https://k8s.netmaker.org
After=network-online.target
Wants=network-online.target
[Service]
User=root
Type=simple
ExecStartPre=/bin/sleep 17
ExecStart=/sbin/netclient daemon
Restart=on-failure
RestartSec=15s
[Install]
WantedBy=multi-user.target
`
servicebytes := []byte(systemservice)
if !ncutils.FileExists("/etc/systemd/system/netclient.service") {
err := os.WriteFile("/etc/systemd/system/netclient.service", servicebytes, 0644)
if err != nil {
logger.Log(0, err.Error())
return err
}
}
_, _ = ncutils.RunCmd("systemctl enable netclient.service", true)
_, _ = ncutils.RunCmd("systemctl daemon-reload", true)
return nil
}
// startSystemD - starts systemd service
func startSystemD() error {
logger.Log(3, "calling systemctl start netclient")
_, err := ncutils.RunCmd("systemctl start netclient.service", false)
return err
}
// stopSystemD - tells system to stop systemd
func stopSystemD() error {
logger.Log(3, "calling systemctl stop netclient")
_, err := ncutils.RunCmd("systemctl stop netclient.service", false)
return err
}
// restartSystemD - tells system to restart systemd
func restartSystemD() error {
slog.Info("restarting netclient service")
_, err := ncutils.RunCmd("systemctl restart netclient.service", false)
return err
}
// removeSystemDServices - removes the systemd services on a machine
func removeSystemDServices() error {
//sysExec, err := exec.LookPath("systemctl")
var faults string
if _, err := ncutils.RunCmd("systemctl disable netclient.service", false); err != nil {
faults = faults + err.Error()
}
if ncutils.FileExists("/etc/systemd/system/netclient.service") {
if err := os.Remove("/etc/systemd/system/netclient.service"); err != nil {
logger.Log(0, "Error removing /etc/systemd/system/netclient.service. Please investigate.")
faults = faults + err.Error()
}
}
if _, err := ncutils.RunCmd("systemctl daemon-reload", false); err != nil {
faults = faults + err.Error()
}
if _, err := ncutils.RunCmd("systemctl reset-failed", false); err != nil {
faults = faults + err.Error()
}
logger.Log(0, "removed systemd remnants if any existed")
if faults != "" {
return errors.New(faults)
}
return nil
}