func (e *BasicExecutor) Start() error {
// Parse the commands arguments and replace instances of Nomad environment
// variables.
envVars, err := environment.ParseFromList(e.cmd.Env)
if err != nil {
return err
}
e.cmd.Path = args.ReplaceEnv(e.cmd.Path, envVars.Map())
combined := strings.Join(e.cmd.Args, " ")
parsed, err := args.ParseAndReplace(combined, envVars.Map())
if err != nil {
return err
}
e.cmd.Args = parsed
spawnState := filepath.Join(e.allocDir, fmt.Sprintf("%s_%s", e.taskName, "exit_status"))
e.spawn = spawn.NewSpawner(spawnState)
e.spawn.SetCommand(&e.cmd)
e.spawn.SetLogs(&spawn.Logs{
Stdout: filepath.Join(e.taskDir, allocdir.TaskLocal, fmt.Sprintf("%v.stdout", e.taskName)),
Stderr: filepath.Join(e.taskDir, allocdir.TaskLocal, fmt.Sprintf("%v.stderr", e.taskName)),
Stdin: os.DevNull,
})
return e.spawn.Spawn(nil)
}
func (e *LinuxExecutor) Start() error {
// Run as "nobody" user so we don't leak root privilege to the spawned
// process.
if err := e.runAs("nobody"); err == nil && e.user != nil {
e.cmd.SetUID(e.user.Uid)
e.cmd.SetGID(e.user.Gid)
}
// Parse the commands arguments and replace instances of Nomad environment
// variables.
envVars, err := environment.ParseFromList(e.Cmd.Env)
if err != nil {
return err
}
parsedPath, err := args.ParseAndReplace(e.cmd.Path, envVars.Map())
if err != nil {
return err
} else if len(parsedPath) != 1 {
return fmt.Errorf("couldn't properly parse command path: %v", e.cmd.Path)
}
e.cmd.Path = parsedPath[0]
combined := strings.Join(e.Cmd.Args, " ")
parsed, err := args.ParseAndReplace(combined, envVars.Map())
if err != nil {
return err
}
e.Cmd.Args = parsed
spawnState := filepath.Join(e.allocDir, fmt.Sprintf("%s_%s", e.taskName, "exit_status"))
e.spawn = spawn.NewSpawner(spawnState)
e.spawn.SetCommand(&e.cmd.Cmd)
e.spawn.SetChroot(e.taskDir)
e.spawn.SetLogs(&spawn.Logs{
Stdout: filepath.Join(e.taskDir, allocdir.TaskLocal, fmt.Sprintf("%v.stdout", e.taskName)),
Stderr: filepath.Join(e.taskDir, allocdir.TaskLocal, fmt.Sprintf("%v.stderr", e.taskName)),
Stdin: os.DevNull,
})
enterCgroup := func(pid int) error {
// Join the spawn-daemon to the cgroup.
manager := e.getCgroupManager(e.groups)
// Apply will place the spawn dameon into the created cgroups.
if err := manager.Apply(pid); err != nil {
return fmt.Errorf("Failed to join spawn-daemon to the cgroup (%+v): %v", e.groups, err)
}
return nil
}
return e.spawn.Spawn(enterCgroup)
}
func (e *BasicExecutor) Start() error {
// Parse the commands arguments and replace instances of Nomad environment
// variables.
e.cmd.Path = e.taskEnv.ReplaceEnv(e.cmd.Path)
e.cmd.Args = e.taskEnv.ParseAndReplace(e.cmd.Args)
spawnState := filepath.Join(e.allocDir, fmt.Sprintf("%s_%s", e.taskName, "exit_status"))
e.spawn = spawn.NewSpawner(spawnState)
e.spawn.SetCommand(&e.cmd)
e.spawn.SetLogs(&spawn.Logs{
Stdout: filepath.Join(e.taskDir, allocdir.TaskLocal, fmt.Sprintf("%v.stdout", e.taskName)),
Stderr: filepath.Join(e.taskDir, allocdir.TaskLocal, fmt.Sprintf("%v.stderr", e.taskName)),
Stdin: os.DevNull,
})
return e.spawn.Spawn(nil)
}
func (e *LinuxExecutor) Start() error {
// Run as "nobody" user so we don't leak root privilege to the spawned
// process.
if err := e.runAs("nobody"); err != nil {
return err
}
// Parse the commands arguments and replace instances of Nomad environment
// variables.
e.cmd.Path = e.taskEnv.ReplaceEnv(e.cmd.Path)
e.cmd.Args = e.taskEnv.ParseAndReplace(e.cmd.Args)
e.cmd.Env = e.taskEnv.EnvList()
spawnState := filepath.Join(e.allocDir, fmt.Sprintf("%s_%s", e.taskName, "exit_status"))
e.spawn = spawn.NewSpawner(spawnState)
e.spawn.SetCommand(&e.cmd)
e.spawn.SetChroot(e.taskDir)
e.spawn.SetLogs(&spawn.Logs{
Stdout: filepath.Join(e.taskDir, allocdir.TaskLocal, fmt.Sprintf("%v.stdout", e.taskName)),
Stderr: filepath.Join(e.taskDir, allocdir.TaskLocal, fmt.Sprintf("%v.stderr", e.taskName)),
Stdin: os.DevNull,
})
enterCgroup := func(pid int) error {
// Join the spawn-daemon to the cgroup.
manager := e.getCgroupManager(e.groups)
// Apply will place the spawn dameon into the created cgroups.
if err := manager.Apply(pid); err != nil {
return fmt.Errorf("Failed to join spawn-daemon to the cgroup (%+v): %v", e.groups, err)
}
return nil
}
return e.spawn.Spawn(enterCgroup)
}