Add Sockets (-H) list to `docker -D info`.

This will allow us to _know_ what the user's -H settings are, which may
be useful for debugging later.

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)

CONTRIBUTING.md

@@ -9,7 +9,7 @@ feels wrong or incomplete.
 When reporting [issues](https://github.com/dotcloud/docker/issues) 
 on GitHub please include your host OS (Ubuntu 12.04, Fedora 19, etc),
 the output of `uname -a` and the output of `docker version` along with
-the output of `docker info`. Please include the steps required to reproduce
+the output of `docker -D info`. Please include the steps required to reproduce
 the problem if possible and applicable.
 This information will help us review and fix your issue faster.
 

api/client/commands.go

@@ -452,6 +452,9 @@ func (cli *DockerCli) CmdInfo(args ...string) error {
 		if initPath := remoteInfo.Get("InitPath"); initPath != "" {
 			fmt.Fprintf(cli.out, "Init Path: %s\n", initPath)
 		}
+		if len(remoteInfo.GetList("Sockets")) != 0 {
+			fmt.Fprintf(cli.out, "Sockets: %v\n", remoteInfo.GetList("Sockets"))
+		}
 	}
 
 	if len(remoteInfo.GetList("IndexServerAddress")) != 0 {

daemon/daemon.go

@@ -96,6 +96,7 @@ type Daemon struct {
 	containerGraph *graphdb.Database
 	driver         graphdriver.Driver
 	execDriver     execdriver.Driver
+	Sockets        []string
 }
 
 // Install installs daemon capabilities to eng.
@@ -878,6 +879,7 @@ func NewDaemonFromDirectory(config *daemonconfig.Config, eng *engine.Engine) (*D
 		sysInitPath:    sysInitPath,
 		execDriver:     ed,
 		eng:            eng,
+		Sockets:        config.Sockets,
 	}
 
 	if err := daemon.checkLocaldns(); err != nil {

daemonconfig/config.go

@@ -31,6 +31,7 @@ type Config struct {
 	DisableNetwork              bool
 	EnableSelinuxSupport        bool
 	Context                     map[string][]string
+	Sockets                     []string
 }
 
 // ConfigFromJob creates and returns a new DaemonConfig object
@@ -66,6 +67,9 @@ func ConfigFromJob(job *engine.Job) *Config {
 		config.Mtu = GetDefaultNetworkMtu()
 	}
 	config.DisableNetwork = config.BridgeIface == DisableNetworkBridge
+	if sockets := job.GetenvList("Sockets"); sockets != nil {
+		config.Sockets = sockets
+	}
 
 	return config
 }

docker/docker.go

@@ -162,6 +162,7 @@ func main() {
 			job.Setenv("ExecDriver", *flExecDriver)
 			job.SetenvInt("Mtu", *flMtu)
 			job.SetenvBool("EnableSelinuxSupport", *flSelinuxEnabled)
+			job.SetenvList("Sockets", flHosts.GetAll())
 			if err := job.Run(); err != nil {
 				log.Fatal(err)
 			}

docs/sources/reference/api/docker_remote_api_v1.11.md

@@ -1099,9 +1099,16 @@ Display system-wide information
         {
              "Containers":11,
              "Images":16,
+             "Driver":"btrfs",
+             "ExecutionDriver":"native-0.1",
+             "KernelVersion":"3.12.0-1-amd64"
              "Debug":false,
              "NFd": 11,
              "NGoroutines":21,
+             "NEventsListener":0,
+             "InitPath":"/usr/bin/docker",
+             "Sockets":["unix:///var/run/docker.sock"],
+             "IndexServerAddress":["https://index.docker.io/v1/"],
              "MemoryLimit":true,
              "SwapLimit":false,
              "IPv4Forwarding":true

docs/sources/reference/commandline/cli.md

@@ -563,25 +563,30 @@ tar, then the ownerships might not get preserved.
 
 ## info
 
-    Usage: docker info
 
-    Display system-wide information
+    Usage: docker info
 
 For example:
 
-    $ sudo docker info
+    $ sudo docker -D info
-    Containers: 292
+    Containers: 16
-    Images: 194
+    Images: 2138
+    Storage Driver: btrfs
+    Execution Driver: native-0.1
+    Kernel Version: 3.12.0-1-amd64
     Debug mode (server): false
-    Debug mode (client): false
+    Debug mode (client): true
-    Fds: 22
+    Fds: 16
-    Goroutines: 67
+    Goroutines: 104
-    LXC Version: 0.9.0
+    EventsListeners: 0
-    EventsListeners: 115
+    Init Path: /usr/bin/docker
-    Kernel Version: 3.8.0-33-generic
+    Sockets: [unix:///var/run/docker.sock tcp://0.0.0.0:4243]
-    WARNING: No swap limit support
+    Username: svendowideit
+    Registry: [https://index.docker.io/v1/]
 
-When sending issue reports, please use `docker version` and `docker info` to
+The global `-D` option tells all `docker` comands to output debug information.
+
+When sending issue reports, please use `docker version` and `docker -D info` to
 ensure we know how your setup is configured.
 
 ## inspect

server/server.go

@@ -780,6 +780,7 @@ func (srv *Server) DockerInfo(job *engine.Job) engine.Status {
 	v.Set("IndexServerAddress", registry.IndexServerAddress())
 	v.Set("InitSha1", dockerversion.INITSHA1)
 	v.Set("InitPath", initPath)
+	v.SetList("Sockets", srv.daemon.Sockets)
 	if _, err := v.WriteTo(job.Stdout); err != nil {
 		return job.Error(err)
 	}