Пример #1
0
// dockerClients creates two *docker.Client, one for long running operations and
// the other for shorter operations. In test / dev mode we can use ENV vars to
// connect to the docker daemon. In production mode we will read docker.endpoint
// from the config file.
func (d *DockerDriver) dockerClients() (*docker.Client, *docker.Client, error) {
	if client != nil && waitClient != nil {
		return client, waitClient, nil
	}

	var err error
	var merr multierror.Error
	createClients.Do(func() {
		if err = shelpers.Init(); err != nil {
			d.logger.Printf("[FATAL] driver.docker: unable to initialize stats: %v", err)
			return
		}

		// Default to using whatever is configured in docker.endpoint. If this is
		// not specified we'll fall back on NewClientFromEnv which reads config from
		// the DOCKER_* environment variables DOCKER_HOST, DOCKER_TLS_VERIFY, and
		// DOCKER_CERT_PATH. This allows us to lock down the config in production
		// but also accept the standard ENV configs for dev and test.
		dockerEndpoint := d.config.Read("docker.endpoint")
		if dockerEndpoint != "" {
			cert := d.config.Read("docker.tls.cert")
			key := d.config.Read("docker.tls.key")
			ca := d.config.Read("docker.tls.ca")

			if cert+key+ca != "" {
				d.logger.Printf("[DEBUG] driver.docker: using TLS client connection to %s", dockerEndpoint)
				client, err = docker.NewTLSClient(dockerEndpoint, cert, key, ca)
			} else {
				d.logger.Printf("[DEBUG] driver.docker: using standard client connection to %s", dockerEndpoint)
				client, err = docker.NewClient(dockerEndpoint)
			}
			client.HTTPClient.Timeout = dockerTimeout
			return
		}

		d.logger.Println("[DEBUG] driver.docker: using client connection initialized from environment")
		client, err = docker.NewClientFromEnv()
		if err != nil {
			merr.Errors = append(merr.Errors, err)
		}
		client.HTTPClient.Timeout = dockerTimeout

		waitClient, err = docker.NewClientFromEnv()
		if err != nil {
			merr.Errors = append(merr.Errors, err)
		}
	})
	return client, waitClient, merr.ErrorOrNil()
}
Пример #2
0
// dockerClient creates *docker.Client. In test / dev mode we can use ENV vars
// to connect to the docker daemon. In production mode we will read
// docker.endpoint from the config file.
func (d *DockerDriver) dockerClient() (*docker.Client, error) {
	if client != nil {
		return client, nil
	}

	var err error
	createClient.Do(func() {
		// Default to using whatever is configured in docker.endpoint. If this is
		// not specified we'll fall back on NewClientFromEnv which reads config from
		// the DOCKER_* environment variables DOCKER_HOST, DOCKER_TLS_VERIFY, and
		// DOCKER_CERT_PATH. This allows us to lock down the config in production
		// but also accept the standard ENV configs for dev and test.
		dockerEndpoint := d.config.Read("docker.endpoint")
		if dockerEndpoint != "" {
			cert := d.config.Read("docker.tls.cert")
			key := d.config.Read("docker.tls.key")
			ca := d.config.Read("docker.tls.ca")

			if cert+key+ca != "" {
				d.logger.Printf("[DEBUG] driver.docker: using TLS client connection to %s", dockerEndpoint)
				client, err = docker.NewTLSClient(dockerEndpoint, cert, key, ca)
			} else {
				d.logger.Printf("[DEBUG] driver.docker: using standard client connection to %s", dockerEndpoint)
				client, err = docker.NewClient(dockerEndpoint)
			}
			return
		}

		d.logger.Println("[DEBUG] driver.docker: using client connection initialized from environment")
		client, err = docker.NewClientFromEnv()
	})
	return client, err
}
Пример #3
0
func init() {
	var err error
	Client, err = docker.NewClientFromEnv()
	if err != nil {
		panic(err)
	}
}
Пример #4
0
func (o *DockerbuildOptions) Complete(f *clientcmd.Factory, cmd *cobra.Command, args []string) error {
	paths, envArgs, ok := cmdutil.SplitEnvironmentFromResources(args)
	if !ok {
		return kcmdutil.UsageError(cmd, "context directory must be specified before environment changes: %s", strings.Join(args, " "))
	}
	if len(paths) != 2 {
		return kcmdutil.UsageError(cmd, "the directory to build and tag must be specified")
	}
	o.Arguments, _, _ = cmdutil.ParseEnvironmentArguments(envArgs)
	o.Directory = paths[0]
	o.Tag = paths[1]
	if len(o.DockerfilePath) == 0 {
		o.DockerfilePath = filepath.Join(o.Directory, "Dockerfile")
	}

	var mounts []dockerbuilder.Mount
	for _, s := range o.MountSpecs {
		segments := strings.Split(s, ":")
		if len(segments) != 2 {
			return kcmdutil.UsageError(cmd, "--mount must be of the form SOURCE:DEST")
		}
		mounts = append(mounts, dockerbuilder.Mount{SourcePath: segments[0], DestinationPath: segments[1]})
	}
	o.Mounts = mounts

	client, err := docker.NewClientFromEnv()
	if err != nil {
		return err
	}
	o.Client = client

	o.Keyring = credentialprovider.NewDockerKeyring()

	return nil
}
Пример #5
0
// dockerSetup does all of the basic setup you need to get a running docker
// process up and running for testing. Use like:
//
//	task := taskTemplate()
//	// do custom task configuration
//	client, handle, cleanup := dockerSetup(t, task)
//	defer cleanup()
//	// do test stuff
//
// If there is a problem during setup this function will abort or skip the test
// and indicate the reason.
func dockerSetup(t *testing.T, task *structs.Task) (*docker.Client, DriverHandle, func()) {
	if !testutil.DockerIsConnected(t) {
		t.SkipNow()
	}

	client, err := docker.NewClientFromEnv()
	if err != nil {
		t.Fatalf("Failed to initialize client: %s\nStack\n%s", err, debug.Stack())
	}

	driverCtx, execCtx := testDriverContexts(task)
	driver := NewDockerDriver(driverCtx)

	handle, err := driver.Start(execCtx, task)
	if err != nil {
		execCtx.AllocDir.Destroy()
		t.Fatalf("Failed to start driver: %s\nStack\n%s", err, debug.Stack())
	}
	if handle == nil {
		execCtx.AllocDir.Destroy()
		t.Fatalf("handle is nil\nStack\n%s", debug.Stack())
	}

	cleanup := func() {
		handle.Kill()
		execCtx.AllocDir.Destroy()
	}

	return client, handle, cleanup
}
Пример #6
0
// Get a *docker.Client, either using the endpoint passed in, or using
// DOCKER_HOST, DOCKER_TLS_VERIFY, and DOCKER_CERT path per their spec
func getDockerClient(dockerEndpoint string) (*docker.Client, error) {
	if len(dockerEndpoint) > 0 {
		glog.Infof("Connecting to docker on %s", dockerEndpoint)
		return docker.NewClient(dockerEndpoint)
	}
	return docker.NewClientFromEnv()
}
Пример #7
0
func checkDockerVersion() error {
	startCheck("Docker up to date")
	dockerVersionTest, err := docker.NewClientFromEnv()
	if err != nil {
		return err
	}

	minDockerVersion, err := docker.NewAPIVersion("1.9")
	e, err := dockerVersionTest.Version()
	if err != nil {
		return err
	}

	currentVersionParts := strings.Split(e.Get("Version"), ".")
	currentVersion, err := docker.NewAPIVersion(fmt.Sprintf("%s.%s", currentVersionParts[0], currentVersionParts[1]))
	if err != nil {
		return err
	}

	if !(currentVersion.GreaterThanOrEqualTo(minDockerVersion)) {
		diagnose(Diagnosis{
			Title:       "Docker up to date",
			Description: "<fail>Docker engine is out of date (min: 1.9)</fail>",
			DocsLink:    "https://docs.docker.com/engine/installation/",
			Kind:        "fail",
		})
	} else {
		diagnose(Diagnosis{
			Title: "Docker up to date",
			Kind:  "success",
		})
	}
	return nil
}
Пример #8
0
// TestConformance* compares the result of running the direct build against a
// sequential docker build. A dockerfile and git repo is loaded, then each step
// in the file is run sequentially, committing after each step. The generated
// image.Config and the resulting filesystems are compared. The next step reuses
// the previously generated layer and performs an incremental diff. This ensures
// that each step is functionally equivalent.
//
// Deviations:
// * Builds run at different times
//   * Modification timestamps are ignored on files
//   * Some processes (gem install) result in files created in the image that
//     have different content because of that (timestamps in files). We treat
//     a file that is identical except for size within 10 bytes and neither old
//     or new is zero bytes to be identical.
// * Docker container commit with ENV FOO=BAR and a Docker build with line
//   ENV FOO=BAR will generate an image with FOO=BAR in different positions
//   (commit places the variable first, build: last). We try to align the
//   generated environment variable to ensure they are equal.
// * The parent image ID is ignored.
//
// TODO: .dockerignore
// TODO: check context dir
// TODO: ONBUILD
// TODO: ensure that the final built image has the right UIDs
//
func TestConformanceInternal(t *testing.T) {
	testCases := []conformanceTest{
		{
			ContextDir: "fixtures/dir",
		},
		// TODO: Fix this test
		// {
		// 	ContextDir: "fixtures/ignore",
		// },
		{
			Dockerfile: "fixtures/Dockerfile.env",
		},
		{
			Dockerfile: "fixtures/Dockerfile.edgecases",
		},
		{
			Dockerfile: "fixtures/Dockerfile.exposedefault",
		},
		{
			Dockerfile: "fixtures/Dockerfile.add",
		},
	}

	c, err := docker.NewClientFromEnv()
	if err != nil {
		t.Fatal(err)
	}

	for i, test := range testCases {
		conformanceTester(t, c, test, i, *compareLayers)
	}
}
Пример #9
0
// Ping implements the DockerInterface Ping method.
func (c *KubeDocker) Ping() error {
	client, err := docker.NewClientFromEnv()
	if err != nil {
		return err
	}
	return client.Ping()
}
Пример #10
0
func worker(requests int, image string, completeCh chan time.Duration) {
	client, err := docker.NewClientFromEnv()
	if err != nil {
		panic(err)
	}

	for i := 0; i < requests; i++ {
		start := time.Now()

		container, err := client.CreateContainer(docker.CreateContainerOptions{
			Config: &docker.Config{
				Image: image,
			}})
		if err != nil {
			panic(err)
		}

		err = client.StartContainer(container.ID, nil)
		if err != nil {
			panic(err)
		}

		completeCh <- time.Since(start)
	}
}
Пример #11
0
// DockerClient creates a docker client from environment
func DockerClient() *dockerclient.Client {
	client, err := dockerclient.NewClientFromEnv()
	if err != nil {
		log.Fatalf("Unabled to create a Docker Client: Is Docker Machine installed and running?")
	}
	client.SkipServerVersionCheck = true
	return client
}
Пример #12
0
// ClientOrDie creates a new Docker client. If one couldn't be created, logs and error and exits with status code 1
func ClientOrDie() *docker.Client {
	cl, err := docker.NewClientFromEnv()
	if err != nil {
		log.Err("creating new docker client (%s)", err)
		os.Exit(1)
	}
	return cl
}
Пример #13
0
// NewControllerFromEnv creates a new Docker client using environment clues.
func NewControllerFromEnv(out io.Writer) (*Controller, error) {
	client, err := docker.NewClientFromEnv()
	if err != nil {
		return nil, fmt.Errorf("could not create Docker client: %v", err)
	}

	return NewController(client, out)
}
Пример #14
0
func NewDockerClient() (*docker.Client, error) {
	host := os.Getenv("DOCKER_HOST")
	hostIsLocal := host == "" || strings.HasPrefix(host, "unix://")
	if !hostIsLocal {
		log.Warnf("Detected DOCKER_HOST %s. This should not be remote.",
			host)
	}
	return docker.NewClientFromEnv()
}
Пример #15
0
// GetClient returns a valid Docker client, the address of the client, or an error
// if the client couldn't be created.
func (_ *Helper) GetClient() (client *docker.Client, endpoint string, err error) {
	client, err = docker.NewClientFromEnv()
	if len(os.Getenv("DOCKER_HOST")) > 0 {
		endpoint = os.Getenv("DOCKER_HOST")
	} else {
		endpoint = "unix:///var/run/docker.sock"
	}
	return
}
Пример #16
0
// Detect whether we are upgrading from a pre-CNI openshift and clean up
// interfaces and iptables rules that are no longer required
func (node *OsdnNode) dockerPreCNICleanup() error {
	exec := kexec.New()
	itx := ipcmd.NewTransaction(exec, "lbr0")
	itx.SetLink("down")
	if err := itx.EndTransaction(); err != nil {
		// no cleanup required
		return nil
	}

	node.clearLbr0IptablesRule = true

	// Restart docker to kill old pods and make it use docker0 again.
	// "systemctl restart" will bail out (unnecessarily) in the
	// OpenShift-in-a-container case, so we work around that by sending
	// the messages by hand.
	if _, err := osexec.Command("dbus-send", "--system", "--print-reply", "--reply-timeout=2000", "--type=method_call", "--dest=org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager.Reload").CombinedOutput(); err != nil {
		log.Error(err)
	}
	if _, err := osexec.Command("dbus-send", "--system", "--print-reply", "--reply-timeout=2000", "--type=method_call", "--dest=org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager.RestartUnit", "string:'docker.service' string:'replace'").CombinedOutput(); err != nil {
		log.Error(err)
	}

	// Delete pre-CNI interfaces
	for _, intf := range []string{"lbr0", "vovsbr", "vlinuxbr"} {
		itx := ipcmd.NewTransaction(exec, intf)
		itx.DeleteLink()
		itx.IgnoreError()
		itx.EndTransaction()
	}

	// Wait until docker has restarted since kubelet will exit it docker isn't running
	dockerClient, err := docker.NewClientFromEnv()
	if err != nil {
		return fmt.Errorf("failed to get docker client: %v", err)
	}
	err = kwait.ExponentialBackoff(
		kwait.Backoff{
			Duration: 100 * time.Millisecond,
			Factor:   1.2,
			Steps:    6,
		},
		func() (bool, error) {
			if err := dockerClient.Ping(); err != nil {
				// wait longer
				return false, nil
			}
			return true, nil
		})
	if err != nil {
		return fmt.Errorf("failed to connect to docker after SDN cleanup restart: %v", err)
	}

	log.Infof("Cleaned up left-over openshift-sdn docker bridge and interfaces")

	return nil
}
Пример #17
0
func GetDockerClient() *docker.Client {
	if dCli == nil {
		if d, err := docker.NewClientFromEnv(); err != nil {
			//log.Fatal(err)
		} else {
			dCli = d
		}
	}
	return dCli
}
Пример #18
0
func newDockerClient() (*_dockerclient, error) {
	client, err := godocker.NewClientFromEnv()
	if err != nil {
		return nil, err
	}
	err = client.Ping()
	return &_dockerclient{
		docker: client,
	}, err
}
Пример #19
0
//Initializes the Docker Client
func (c *CheckDocker) Init() error {
	//create the docker client
	var err error
	c.dockerClient, err = docker.NewClientFromEnv()
	if err != nil {
		c.Logger.Printf("[DEBUG] Error creating the Docker client: %s", err.Error())
		return err
	}
	return nil
}
Пример #20
0
// Init sets up the controller's Docker connection.
func (c *Controller) Init(namePrefix string) error {
	var err error
	if c.docker, err = dockerclient.NewClientFromEnv(); err != nil {
		return err
	}

	c.NamePrefix = namePrefix
	c.NextJobId = 1
	c.templates = make(map[string]*Template)
	return nil
}
Пример #21
0
// StartDaemon starts a daemon using the provided binary returning
// a client to the binary, a close function, and error.
func StartDaemon(binary string, lc LogCapturer) (*dockerclient.Client, func() error, error) {
	// Get Docker version of process
	previousVersion, err := versionutil.BinaryVersion(binary)
	if err != nil {
		return nil, nil, fmt.Errorf("could not get binary version: %s", err)
	}

	logrus.Debugf("Starting daemon with %s", binary)
	binaryArgs := []string{}
	if previousVersion.LessThan(versionutil.StaticVersion(1, 8, 0)) {
		binaryArgs = append(binaryArgs, "--daemon")
	} else {
		binaryArgs = append(binaryArgs, "daemon")
	}
	binaryArgs = append(binaryArgs, "--log-level=debug")
	binaryArgs = append(binaryArgs, "--storage-driver="+getGraphDriver())
	cmd := exec.Command(binary, binaryArgs...)
	cmd.Stdout = lc.Stdout()
	cmd.Stderr = lc.Stderr()
	if err := cmd.Start(); err != nil {
		return nil, nil, fmt.Errorf("could not start daemon: %s", err)
	}

	logrus.Debugf("Waiting for daemon to start")
	time.Sleep(2 * time.Second)

	client, err := dockerclient.NewClientFromEnv()
	if err != nil {
		return nil, nil, fmt.Errorf("could not initialize client: %s", err)
	}

	// Wait for it to start
	for i := 0; ; i++ {
		v, err := client.Version()
		if err == nil {
			logrus.Debugf("Established connection to daemon with version %s", v.Get("Version"))
			break
		}
		if i >= 10 {
			logrus.Fatalf("Failed to establish connection to daemon, check logs, quitting")
		}
		time.Sleep(time.Second)
	}

	kill := func() error {
		if err := cmd.Process.Kill(); err != nil {
			return err
		}
		time.Sleep(500 * time.Millisecond)
		return os.RemoveAll("/var/run/docker.pid")
	}

	return client, kill, nil
}
Пример #22
0
// NewImageManager creates an instance of ImageManager
func NewImageManager() (*ImageManager, error) {
	manager := &ImageManager{}

	client, err := dockerclient.NewClientFromEnv()
	manager.client = client

	if err != nil {
		return nil, err
	}

	return manager, nil
}
Пример #23
0
func setupDockerClient() (*docker.Client, error) {
	dc, err := docker.NewClientFromEnv()
	if err != nil {
		return nil, err
	}
	env, err := dc.Version()
	if err != nil {
		return nil, err
	}
	log.Printf("Using Docker %v", env)
	return dc, nil
}
Пример #24
0
func buildContainer(proj Project, dockersock string, debug bool) (*docker.Container, error) {
	l := NewLog("\t[dockerfile builder]", debug)

	containerImageName := fmt.Sprintf("%s-%s", proj.Branch, proj.Name)

	l.Trace("connecting to docker daemon running @", dockersock)

	var client *docker.Client
	var err error

	if dockersock == "unix:///var/run/docker.sock" {
		l.Trace("using", dockersock)
		client, err = docker.NewClient(dockersock)
	} else {
		l.Trace("creating docker client from env")
		client, err = docker.NewClientFromEnv()
	}

	if err != nil {
		l.Error(err)
		return nil, err
	}

	l.Trace("Cleaning duplicate containers")
	proj.Status.Write([]byte("Checking for old containers...\n"))
	if err := cleanDuplicateContainer(client, proj); err != nil {
		proj.Status.Write([]byte("Container check failed -> \n"))
		proj.Status.Write([]byte(err.Error()))
		l.Error("err cleaning containers", err)
		return nil, err
	}

	l.Trace("Building image", containerImageName)
	proj.Status.Write([]byte("Building image...\n"))
	if err := buildImage(client, containerImageName, proj.Archive); err != nil {
		proj.Status.Write([]byte("Build failed\n"))
		proj.Status.Write([]byte(err.Error()))
		return nil, err
	}

	l.Trace("Launching container ", proj.Name)
	proj.Status.Write([]byte("Launching container...\n"))
	container, err := launchContainer(client, containerImageName, proj.Name)
	if err != nil {
		proj.Status.Write([]byte("Launch failed\n"))
		proj.Status.Write([]byte(err.Error()))
		return nil, err
	}

	l.Trace(container.Name, " with id ", container.ID, "launched")
	return container, nil
}
Пример #25
0
func TestDockerScriptCheck(t *testing.T) {
	if !testutil.DockerIsConnected(t) {
		return
	}
	client, err := docker.NewClientFromEnv()
	if err != nil {
		t.Fatalf("error creating docker client: %v", err)
	}

	if err := client.PullImage(docker.PullImageOptions{Repository: "busybox", Tag: "latest"},
		docker.AuthConfiguration{}); err != nil {
		t.Fatalf("error pulling redis: %v", err)
	}

	container, err := client.CreateContainer(docker.CreateContainerOptions{
		Config: &docker.Config{
			Image: "busybox",
			Cmd:   []string{"/bin/sleep", "1000"},
		},
	})
	if err != nil {
		t.Fatalf("error creating container: %v", err)
	}
	defer removeContainer(client, container.ID)

	if err := client.StartContainer(container.ID, container.HostConfig); err != nil {
		t.Fatalf("error starting container", err)
	}

	check := &DockerScriptCheck{
		id:          "1",
		interval:    5 * time.Second,
		containerID: container.ID,
		logger:      log.New(os.Stdout, "", log.LstdFlags),
		cmd:         "/bin/echo",
		args:        []string{"hello", "world"},
	}

	res := check.Run()
	expectedOutput := "hello world"
	expectedExitCode := 0
	if res.Err != nil {
		t.Fatalf("err: %v", res.Err)
	}
	if strings.TrimSpace(res.Output) != expectedOutput {
		t.Fatalf("output expected: %v, actual: %v", expectedOutput, res.Output)
	}

	if res.ExitCode != expectedExitCode {
		t.Fatalf("exitcode expected: %v, actual: %v", expectedExitCode, res.ExitCode)
	}
}
Пример #26
0
func dockerIsRemote(t *testing.T) bool {
	client, err := docker.NewClientFromEnv()
	if err != nil {
		return false
	}

	// Technically this could be a local tcp socket but for testing purposes
	// we'll just assume that tcp is only used for remote connections.
	if client.Endpoint()[0:3] == "tcp" {
		return true
	}
	return false
}
Пример #27
0
// dockerClient creates *docker.Client. In test / dev mode we can use ENV vars
// to connect to the docker daemon. In production mode we will read
// docker.endpoint from the config file.
func (d *DockerDriver) dockerClient() (*docker.Client, error) {
	// Default to using whatever is configured in docker.endpoint. If this is
	// not specified we'll fall back on NewClientFromEnv which reads config from
	// the DOCKER_* environment variables DOCKER_HOST, DOCKER_TLS_VERIFY, and
	// DOCKER_CERT_PATH. This allows us to lock down the config in production
	// but also accept the standard ENV configs for dev and test.
	dockerEndpoint := d.config.Read("docker.endpoint")
	if dockerEndpoint != "" {
		return docker.NewClient(dockerEndpoint)
	}

	return docker.NewClientFromEnv()
}
Пример #28
0
// main function
func main() {

	fmt.Println("Feed me a compose file now:")
	// Read in our compose file from stdin
	yamlbytes, err := ioutil.ReadAll(os.Stdin)

	// unmarshal it so we can enumerate our services
	yaml.Unmarshal(yamlbytes, &services)

	// create a new compose project
	p, err = docker.NewProject(&docker.Context{
		Context: project.Context{
			ComposeBytes: yamlbytes,
			ProjectName:  "my-compose", // TODO make an environment variable
		},
	})

	if err != nil {
		log.Fatal(err)
	}

	// create our docker client link
	client, _ := dockerclient.NewClientFromEnv()

	// make and attach our listener channel
	events := make(chan *dockerclient.APIEvents)
	client.AddEventListener(events)

	// start watching for events
	go watchEvents(events)

	// main loop
	for {
		// look up how many nodes we have in the cluster
		// this is mainly for when a node is added
		nodes = getNodes(client)

		// Print the number of nodes we found
		log.Printf("Nodes: %d\n", nodes)

		// Do the heavy lifting once
		scale()

		// sleep for a bit, then check again
		time.Sleep(time.Minute) // TODO make an environment variable
	}
}
Пример #29
0
// dockerData gather date from docker daemon directly (using DOCKER_HOST)
// and from proc/DOCKER_PID/status and publish those to conn
func dockerData(tags string, conn net.Conn) {
	if os.Getenv("DOCKER_HOST") == "" {
		log.Fatal(`please provide eg. DOCKER_HOST="tcp://127.0.0.1:8080"`)
	}

	// pid
	pidS := os.Getenv("DOCKER_PID")
	if pidS == "" {
		log.Fatal("cannot find docker deamon - please provide DOCKER_PID - try DOCKER_PID=`sudo lsof -t -sTCP:LISTEN -i :8080`")
	}
	pid, err := strconv.Atoi(pidS)
	if err != nil {
		log.Fatal(err)
	}
	log.Printf("docker pid=%d", pid)

	// docker client
	dockerClient, _ := docker.NewClientFromEnv()
	for {
		p, err := process.NewProcess(int32(pid))
		// threads
		threads, err := p.NumThreads()
		if err != nil {
			log.Fatal(err)
		}
		mi, err := p.MemoryInfo()
		if err != nil {
			log.Fatal(err)
		}
		rss := mi.RSS
		vms := mi.VMS

		// docker info
		info, err := dockerClient.Info()
		// log.Printf("info=%#v", info)

		output := fmt.Sprintf("docker,driver=%s%s containers=%di,goroutines=%di,images=%di,threads=%di,vmsize=%di,rss=%di",
			info.Get("Driver"), tags, info.GetInt("Containers"), info.GetInt("NGoroutines"), info.GetInt("Images"), threads, vms, rss)

		n, err := conn.Write([]byte(output))
		if err != nil {
			log.Fatal(err)
		}
		log.Println(n, output)
		time.Sleep(1 * time.Second)
	}
}
Пример #30
0
// dockerIsConnected checks to see if a docker daemon is available (local or remote)
func dockerIsConnected(t *testing.T) bool {
	client, err := docker.NewClientFromEnv()
	if err != nil {
		return false
	}

	// Creating a client doesn't actually connect, so make sure we do something
	// like call Version() on it.
	env, err := client.Version()
	if err != nil {
		t.Logf("Failed to connect to docker daemon: %s", err)
		return false
	}

	t.Logf("Successfully connected to docker daemon running version %s", env.Get("Version"))
	return true
}