Further cleanup and refactoring

cmd/respawn/respawn.go

@@ -1,6 +1,7 @@
 package respawn
 
 import (
+	"io"
 	"io/ioutil"
 	"os"
 	"os/exec"
@@ -9,10 +10,38 @@ import (
 	"time"
 
 	log "github.com/Sirupsen/logrus"
+	"github.com/codegangsta/cli"
 )
 
 func Main() {
-	input, err := ioutil.ReadAll(os.Stdin)
+	app := cli.NewApp()
+
+	app.Flags = []cli.Flag{
+		cli.StringFlag{
+			Name:  "file, f",
+			Usage: "Optional config file to load",
+		},
+	}
+	app.Action = run
+
+	app.Run(os.Args)
+
+}
+
+func run(c *cli.Context) {
+	var stream io.Reader = os.Stdin
+	var err error
+
+	inputFileName := c.String("file")
+
+	if inputFileName != "" {
+		stream, err = os.Open(inputFileName)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	input, err := ioutil.ReadAll(stream)
 	if err != nil {
 		panic(err)
 	}

cmd/sysinit/sysinit.go

@@ -163,19 +163,6 @@ func launchConsole(cfg *config.Config) error {
 	cmd.Start()
 
 	return cmd.Wait()
-	//console := cfg.GetContainerById(cfg.ConsoleContainer)
-	//if console == nil {
-	//	return nil
-	//}
-
-	//c, err := docker.ParseContainer(cfg, console)
-	//if err != nil {
-	//	return err
-	//}
-
-	//return c.Attach()
-
-	//return nil
 }
 
 func sysInit() error {
@@ -188,7 +175,6 @@ func sysInit() error {
 		loadImages,
 		runContainers,
 		func(cfg *config.Config) error {
-			//TODO: not totally sure why we need this.
 			syscall.Sync()
 			return nil
 		},

config/config.go

@@ -46,14 +46,14 @@ type Config struct {
 	RescueContainer  *ContainerConfig  `yaml:"rescue_container,omitempty"`
 	State            ConfigState       `yaml:"state,omitempty"`
 	Userdocker       UserDockerInfo    `yaml:"userdocker,omitempty"`
-	CloudConfig      []string          `yaml:"cloud_config,omitempty"`
 	SystemContainers []ContainerConfig `yaml:"system_containers,omitempty"`
 	SystemDockerArgs []string          `yaml:"system_docker_args,flow,omitempty"`
 	Modules          []string          `yaml:"modules,omitempty"`
+	CloudInit        CloudInit         `yaml:"cloud_init"`
 }
 
 type UserDockerInfo struct {
-	UseTLS        bool   `yaml:"use_tls,omitempty"`
+	UseTLS        bool   `yaml:"use_tls"`
 	TLSServerCert string `yaml:"tls_server_cert"`
 	TLSServerKey  string `yaml:"tls_server_key"`
 	TLSCACert     string `yaml:"tls_ca_cert"`
@@ -65,6 +65,10 @@ type ConfigState struct {
 	Required bool   `yaml:"required"`
 }
 
+type CloudInit struct {
+	Datasources []string `yaml:"datasources"`
+}
+
 func (c *Config) Merge(newConfig Config) (bool, error) {
 	//Efficient? Nope, but computers are fast
 	newConfig.ClearReadOnly()
@@ -73,6 +77,8 @@ func (c *Config) Merge(newConfig Config) (bool, error) {
 		return false, err
 	}
 
+	log.Debugf("Input \n%s", string(content))
+
 	err = yaml.Unmarshal([]byte(content), c)
 	return true, err
 }
@@ -116,7 +122,18 @@ func LoadConfig() (*Config, error) {
 
 func (c *Config) readArgs() error {
 	log.Debug("Reading config args")
-	cmdLine := strings.Join(os.Args[1:], " ")
+	parts := make([]string, len(os.Args))
+
+	for _, arg := range os.Args[1:] {
+		if strings.HasPrefix(arg, "--") {
+			arg = arg[2:]
+		}
+
+		arg = strings.Replace(arg, "-", ".", -1)
+		parts = append(parts, arg)
+	}
+
+	cmdLine := strings.Join(parts, " ")
 	if len(cmdLine) == 0 {
 		return nil
 	}

config/default.go

@@ -17,7 +17,6 @@ func NewConfig() *Config {
 		Userdocker: UserDockerInfo{
 			UseTLS: true,
 		},
-		CloudConfig: []string{},
 		SystemContainers: []ContainerConfig{
 			{
 				Cmd: "--name=system-volumes " +
@@ -29,19 +28,25 @@ func NewConfig() *Config {
 					"state",
 			},
 			{
-				Cmd: "--name=console-volumes " +
+				Cmd: "--name=command-volumes " +
 					"--net=none " +
 					"--read-only " +
 					"-v=/init:/sbin/halt:ro " +
 					"-v=/init:/sbin/poweroff:ro " +
 					"-v=/init:/sbin/reboot:ro " +
-					"-v=/init:/sbin/tlsconf:ro " +
+					"-v=/init:/usr/bin/cloud-init:ro " +
 					"-v=/init:/usr/bin/tlsconf:ro " +
 					"-v=/init:/usr/bin/rancherctl:ro " +
 					"-v=/init:/usr/bin/respawn:ro " +
 					"-v=/init:/usr/bin/system-docker:ro " +
 					"-v=/lib/modules:/lib/modules:ro " +
 					"-v=/usr/bin/docker:/usr/bin/docker:ro " +
+					"state",
+			},
+			{
+				Cmd: "--name=user-volumes " +
+					"--net=none " +
+					"--read-only " +
 					"-v=/var/lib/rancher/state/home:/home " +
 					"-v=/var/lib/rancher/state/opt:/opt " +
 					"state",
@@ -56,11 +61,11 @@ func NewConfig() *Config {
 					"udev",
 			},
 			{
-				Cmd: "--name=cloudconfig " +
+				Cmd: "--name=cloud-init " +
+					"--rm " +
 					"--net=host " +
-					"-v=/init:/usr/bin/rancherctl:ro " +
-					"-v=/init:/usr/bin/cloudinit:ro " +
-					"cloudconfig",
+					"--volumes-from=command-volumes " +
+					"cloudinit",
 			},
 			{
 				Cmd: "--name=network " +
@@ -77,6 +82,14 @@ func NewConfig() *Config {
 					"--net=host " +
 					"ntp",
 			},
+			{
+				Cmd: "--name=syslog " +
+					"-d " +
+					"--rm " +
+					"--privileged " +
+					"--net=host " +
+					"syslog",
+			},
 			{
 				Cmd: "--name=userdocker " +
 					"-d " +
@@ -86,11 +99,9 @@ func NewConfig() *Config {
 					"--pid=host " +
 					"--net=host " +
 					"--privileged " +
-					"--volumes-from=console-volumes " +
+					"--volumes-from=command-volumes " +
+					"--volumes-from=user-volumes " +
 					"--volumes-from=system-volumes " +
-					"-v=/usr/bin/docker:/usr/bin/docker:ro " +
-					"-v=/init:/usr/bin/tlsconf:ro " +
-					"-v=/init:/usr/sbin/rancherctl:ro " +
 					"-v=/var/lib/rancher/state/docker:/var/lib/docker " +
 					"userdocker",
 			},
@@ -99,20 +110,14 @@ func NewConfig() *Config {
 					"-d " +
 					"--rm " +
 					"--privileged " +
-					"--volumes-from=console-volumes " +
+					"--volumes-from=command-volumes " +
+					"--volumes-from=user-volumes " +
 					"--volumes-from=system-volumes " +
 					"--ipc=host " +
 					"--net=host " +
 					"--pid=host " +
 					"console",
 			},
-			{
-				Cmd: "--name=syslog " +
-				     	"-d " +
-				     	"--privileged " +
-				    	"--net=host " +
-					"syslog",
-			},
 		},
 		RescueContainer: &ContainerConfig{
 			Cmd: "--name=rescue " +

main.go

@@ -44,7 +44,7 @@ func main() {
 	registerCmd("/usr/bin/respawn", respawn.Main)
 	registerCmd("/usr/sbin/rancherctl", control.Main)
 	registerCmd("/usr/bin/tlsconf", tlsconf.Main)
-	registerCmd("/usr/bin/cloudinit", cloudinit.Main)
+	registerCmd("/usr/bin/cloud-init", cloudinit.Main)
 
 	if !reexec.Init() {
 		log.Fatalf("Failed to find an entry point for %s", os.Args[0])

scripts/dockerimages/08-ntp

@@ -1,3 +1,3 @@
-FROM console
+FROM base
 COPY scripts/dockerimages/scripts/ntp.sh /
 CMD ["/ntp.sh"]

scripts/dockerimages/09-syslog

@@ -1,3 +1,3 @@
-FROM console
+FROM base
 COPY scripts/dockerimages/scripts/syslog.sh /
 CMD ["/syslog.sh"] 

scripts/dockerimages/scripts/cloud-init.sh

@@ -4,4 +4,4 @@ set -x -e
 
 CLOUD_CONFIG_FLAGS=$(rancherctl config get cloud_config)
 
-cloudinit --preinit "$CLOUD_CONFIG_FLAGS"
+cloud-init --preinit "$CLOUD_CONFIG_FLAGS"

scripts/dockerimages/scripts/console.sh

@@ -1,15 +1,12 @@
 #!/bin/sh
 
-#if [ -t 1 ]; then
-    #exec /bin/sh
-#else
-
 CLOUD_CONFIG_FILE=/var/lib/rancher/cloud-config
 
 if [ -s $CLOUD_CONFIG_FILE ]; then
-	cloudinit --from-file $CLOUD_CONFIG_FILE
+	cloud-init --from-file $CLOUD_CONFIG_FILE
 fi
-    exec respawn << EOF
+
+cat > /etc/respawn.conf << EOF
 /sbin/getty 115200 tty1
 /sbin/getty 115200 tty2
 /sbin/getty 115200 tty3
@@ -17,4 +14,5 @@ fi
 /sbin/getty 115200 tty5
 /sbin/getty 115200 tty6
 EOF
-#fi
+
+exec respawn -f /etc/respawn.conf