netmaker/netclient/daemon/systemd.go
2022-02-01 15:27:00 -05:00

121 lines
3.2 KiB
Go

package daemon
import (
//"github.com/davecgh/go-spew/spew"
"log"
"os"
"path/filepath"
"github.com/gravitl/netmaker/netclient/ncutils"
)
const EXEC_DIR = "/sbin/"
// SetupSystemDDaemon - sets system daemon for supported machines
func SetupSystemDDaemon(interval string) error {
if ncutils.IsWindows() {
return nil
}
dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
if err != nil {
return err
}
binarypath := dir + "/netclient"
_, err = os.Stat("/etc/netclient/config")
if os.IsNotExist(err) {
os.MkdirAll("/etc/netclient/config", 0744)
} else if err != nil {
log.Println("couldnt find or create /etc/netclient")
return err
}
//install binary
//should check if the existing binary is the corect version -- for now only copy if file doesn't exist
if !ncutils.FileExists(EXEC_DIR + "netclient") {
err = ncutils.Copy(binarypath, EXEC_DIR+"netclient")
if err != nil {
log.Println(err)
return err
}
}
systemservice := `[Unit]
Description=Netclient Daemon
Documentation=https://docs.netmaker.org https://k8s.netmaker.org
After=network-online.target
Wants=network-online.target systemd-networkd-wait-online.service
[Service]
User=root
Type=simple
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 {
log.Println(err)
return err
}
}
_, _ = ncutils.RunCmd("systemctl enable netclient.service", true)
_, _ = ncutils.RunCmd("systemctl daemon-reload", true)
_, _ = ncutils.RunCmd("systemctl start netclient.service", true)
return nil
}
func CleanupLinux() {
if err := os.RemoveAll(ncutils.GetNetclientPath()); err != nil {
ncutils.PrintLog("Removing netclient configs: "+err.Error(), 1)
}
if err := os.Remove(EXEC_DIR + "netclient"); err != nil {
ncutils.PrintLog("Removing netclient binary: "+err.Error(), 1)
}
}
// RemoveSystemDServices - removes the systemd services on a machine
func RemoveSystemDServices() error {
//sysExec, err := exec.LookPath("systemctl")
var err error
if !ncutils.IsWindows() && isOnlyService() {
if err != nil {
log.Println(err)
}
ncutils.RunCmd("systemctl disable netclient.service", false)
ncutils.RunCmd("systemctl disable netclient.timer", false)
if ncutils.FileExists("/etc/systemd/system/netclient.service") {
err = os.Remove("/etc/systemd/system/netclient.service")
if err != nil {
ncutils.Log("Error removing /etc/systemd/system/netclient.service. Please investigate.")
}
}
if ncutils.FileExists("/etc/systemd/system/netclient.timer") {
err = os.Remove("/etc/systemd/system/netclient.timer")
if err != nil {
ncutils.Log("Error removing /etc/systemd/system/netclient.timer. Please investigate.")
}
}
ncutils.RunCmd("systemctl daemon-reload", false)
ncutils.RunCmd("systemctl reset-failed", false)
ncutils.Log("removed systemd remnants if any existed")
}
return nil
}
func isOnlyService() bool {
files, err := filepath.Glob("/etc/netclient/config/netconfig-*")
if err != nil {
return false
}
return len(files) == 0
}