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Add systemd utility package

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Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
This commit is contained in:
Alex Ellis (OpenFaaS Ltd)
2019-12-24 09:12:24 +00:00
parent 5bb68e15f5
commit ad97b6db58
5 changed files with 138 additions and 69 deletions
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69
cmd/install.go
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@ -1,12 +1,11 @@
package cmd
import (
"bytes"
"fmt"
"os"
"path"
"path/filepath"
"text/template"
systemd "github.com/alexellis/faasd/pkg/systemd"
"github.com/spf13/cobra"
)
@ -29,12 +28,37 @@ func runInstall(_ *cobra.Command, _ []string) error {
return err
}
err = installUnit("faas-containerd")
err = systemd.InstallUnit("faas-containerd")
if err != nil {
return err
}
err = installUnit("faasd")
err = systemd.InstallUnit("faasd")
if err != nil {
return err
}
err = systemd.DaemonReload()
if err != nil {
return err
}
err = systemd.Enable("faas-containerd")
if err != nil {
return err
}
err = systemd.Enable("faasd")
if err != nil {
return err
}
err = systemd.Start("faas-containerd")
if err != nil {
return err
}
err = systemd.Start("faasd")
if err != nil {
return err
}
@ -49,38 +73,3 @@ func binExists(folder, name string) error {
}
return nil
}
func installUnit(name string) error {
tmpl, err := template.ParseFiles("./hack/" + name + ".service")
wd, _ := os.Getwd()
var tpl bytes.Buffer
userData := struct {
Cwd string
}{
Cwd: wd,
}
err = tmpl.Execute(&tpl, userData)
if err != nil {
return err
}
err = writeUnit(name+".service", tpl.Bytes())
if err != nil {
return err
}
return nil
}
func writeUnit(name string, data []byte) error {
f, err := os.Create(filepath.Join("/lib/systemd/system", name))
if err != nil {
return err
}
defer f.Close()
_, err = f.Write(data)
return err
}