Isolating the plugin process from the nomad client

client/driver/utils.go

@@ -15,6 +15,9 @@ import (
 func createExecutor(config *plugin.ClientConfig, w io.Writer) (executor.Executor, *plugin.Client, error) {
 	config.HandshakeConfig = HandshakeConfig
 	config.Plugins = GetPluginMap(w)
+	if config.Cmd != nil {
+		isolateCommand(config.Cmd)
+	}
 	executorClient := plugin.NewClient(config)
 	rpcClient, err := executorClient.Client()
 	if err != nil {

client/driver/utils_posix.go

@@ -0,0 +1,16 @@
+package driver
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+// isolateCommand sets the setsid flag in exec.Cmd to true so that the process
+// becomes the process leader in a new session and doesn't receive signals that
+// are sent to the parent process.
+func isolateCommand(cmd *exec.Cmd) {
+	if cmd.SysProcAttr == nil {
+		cmd.SysProcAttr = &syscall.SysProcAttr{}
+	}
+	cmd.SysProcAttr.Setsid = true
+}

client/driver/utils_windows.go

@@ -0,0 +1,9 @@
+package driver
+
+import (
+	"os/exec"
+)
+
+// TODO Figure out if this is needed in Wondows
+func isolateCommand(cmd *exec.Cmd) {
+}