Use named pipe as default for swarmd on Windows

Signed-off-by: Olli Janatuinen <[email protected]>

cmd/swarmd/defaults/defaults.go → cmd/swarmd/defaults/defaults_unix.go

@@ -1,7 +1,12 @@
+// +build !windows
+
 package defaults
 
 // ControlAPISocket is the default path where clients can contact the swarmd control API.
 var ControlAPISocket = "/var/run/swarmd.sock"
 
+// EngineAddr is Docker default socket file on Linux
+var EngineAddr = "unix:///var/run/docker.sock"
+
 // StateDir is the default path to the swarmd state directory
 var StateDir = "/var/lib/swarmd"

cmd/swarmd/defaults/defaults_windows.go

@@ -0,0 +1,12 @@
+// +build windows
+
+package defaults
+
+// ControlAPISocket is the default path where clients can contact the swarmd control API.
+var ControlAPISocket = "//./pipe/swarmd"
+
+// EngineAddr is Docker default named pipe on Windows
+var EngineAddr = "npipe:////./pipe/docker_engine" 
+
+// StateDir is the default path to the swarmd state directory
+var StateDir = `C:\ProgramData\swarmd`

cmd/swarmd/main.go

@@ -256,7 +256,7 @@ func init() {
 	mainCmd.Flags().StringP("log-level", "l", "info", "Log level (options \"debug\", \"info\", \"warn\", \"error\", \"fatal\", \"panic\")")
 	mainCmd.Flags().StringP("state-dir", "d", defaults.StateDir, "State directory")
 	mainCmd.Flags().StringP("join-token", "", "", "Specifies the secret token required to join the cluster")
-	mainCmd.Flags().String("engine-addr", "unix:///var/run/docker.sock", "Address of engine instance of agent.")
+	mainCmd.Flags().String("engine-addr", defaults.EngineAddr, "Address of engine instance of agent.")
 	mainCmd.Flags().String("containerd-addr", "", "Address of containerd instance of agent.")
 	mainCmd.Flags().String("containerd-namespace", "swarmd", "Namespace to use when using containerd agent.")
 	mainCmd.Flags().String("hostname", "", "Override reported agent hostname")