/
utils.go
58 lines (46 loc) · 1.35 KB
/
utils.go
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package docker
import (
"fmt"
"github.com/pouchcontainer/d2p-migrator/utils"
"github.com/sirupsen/logrus"
)
// StopDockerService stops the docker service.
func StopDockerService() error {
logrus.Debug("Start to stop docker service")
stopDocker := make(chan error, 1)
go func() {
var err error
for i := 0; i < 3; i++ {
err = utils.ExecCommand("systemctl", "stop", "docker")
if err == nil {
break
}
logrus.Errorf("failed to stop docker service: %v", err)
}
stopDocker <- err
}()
if err := <-stopDocker; err != nil {
return fmt.Errorf("failed to stop docker: %v", err)
}
logrus.Debug("Success stopped docker service")
return nil
}
// UninstallDockerService remove docker package
func UninstallDockerService(dockerRpmName string) error {
// first, backup some config files, in case we may revert migration.
for _, f := range []string{"/etc/sysconfig/docker", "/etc/docker/daemon.json"} {
if err := utils.ExecCommand("cp", f, f+".bk"); err != nil {
return err
}
}
// second, we must first stop the docker before remove it
if err := StopDockerService(); err != nil {
return err
}
// now remove docker rpm package
logrus.Infof("Start to uninstall docker %s ", dockerRpmName)
if err := utils.ExecCommand("rpm", "-e", dockerRpmName); err != nil {
return fmt.Errorf("failed to uninstall docker: %v", err)
}
return nil
}