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Install kubernetes on init / join and restart kubelet after reboot

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Signed-off-by: Malte Poll <mp@edgeless.systems>
This commit is contained in:
Malte Poll 2022-05-19 17:18:22 +02:00 • committed by Malte Poll
parent f67cf2d31f
commit 1331ee4077
9 changed files with 141 additions and 18 deletions
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43
coordinator/kubernetes/k8sapi/systemd.go
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@ -7,8 +7,7 @@ import (
"github.com/coreos/go-systemd/v22/dbus"
)
func RestartSystemdUnit(unit string) error {
ctx := context.Background()
func restartSystemdUnit(ctx context.Context, unit string) error {
conn, err := dbus.NewSystemdConnectionContext(ctx)
if err != nil {
return fmt.Errorf("establishing systemd connection failed: %w", err)
@ -16,7 +15,7 @@ func RestartSystemdUnit(unit string) error {
restartChan := make(chan string)
if _, err := conn.RestartUnitContext(ctx, unit, "replace", restartChan); err != nil {
return fmt.Errorf("restarting systemd unit \"%v\" failed: %w", unit, err)
return fmt.Errorf("restarting systemd unit %q failed: %w", unit, err)
}
// Wait for the restart to finish and actually check if it was
@ -28,6 +27,42 @@ func RestartSystemdUnit(unit string) error {
return nil
default:
return fmt.Errorf("restarting systemd unit \"%v\" failed: expected %v but received %v", unit, "done", result)
return fmt.Errorf("restarting systemd unit %q failed: expected %v but received %v", unit, "done", result)
}
}
func startSystemdUnit(ctx context.Context, unit string) error {
conn, err := dbus.NewSystemdConnectionContext(ctx)
if err != nil {
return fmt.Errorf("establishing systemd connection failed: %w", err)
}
startChan := make(chan string)
if _, err := conn.StartUnitContext(ctx, unit, "replace", startChan); err != nil {
return fmt.Errorf("starting systemd unit %q failed: %w", unit, err)
}
// Wait for the enable to finish and actually check if it was
// successful or not.
result := <-startChan
switch result {
case "done":
return nil
default:
return fmt.Errorf("starting systemd unit %q failed: expected %v but received %v", unit, "done", result)
}
}
func enableSystemdUnit(ctx context.Context, unitPath string) error {
conn, err := dbus.NewSystemdConnectionContext(ctx)
if err != nil {
return fmt.Errorf("establishing systemd connection failed: %w", err)
}
if _, _, err := conn.EnableUnitFilesContext(ctx, []string{unitPath}, true, true); err != nil {
return fmt.Errorf("enabling systemd unit %q failed: %w", unitPath, err)
}
return nil
}