mirror of https://github.com/docker/docs.git
126 lines
2.8 KiB
Go
126 lines
2.8 KiB
Go
package main
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import (
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"crypto/tls"
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"crypto/x509"
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"fmt"
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"io/ioutil"
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log "github.com/Sirupsen/logrus"
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"github.com/codegangsta/cli"
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"github.com/docker/swarm/api"
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"github.com/docker/swarm/cluster"
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"github.com/docker/swarm/discovery"
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"github.com/docker/swarm/scheduler"
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"github.com/docker/swarm/scheduler/filter"
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"github.com/docker/swarm/scheduler/strategy"
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)
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type logHandler struct {
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}
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func (h *logHandler) Handle(e *cluster.Event) error {
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log.Printf("event -> status: %q from: %q id: %q node: %q", e.Status, e.From, e.Id, e.Node.Name)
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return nil
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}
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// Load the TLS certificates/keys and, if verify is true, the CA.
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func loadTlsConfig(ca, cert, key string, verify bool) (*tls.Config, error) {
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c, err := tls.LoadX509KeyPair(cert, key)
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if err != nil {
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return nil, fmt.Errorf("Couldn't load X509 key pair (%s, %s): %s. Key encrypted?",
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cert, key, err)
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}
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config := &tls.Config{
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Certificates: []tls.Certificate{c},
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MinVersion: tls.VersionTLS10,
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}
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if verify {
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certPool := x509.NewCertPool()
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file, err := ioutil.ReadFile(ca)
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if err != nil {
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return nil, fmt.Errorf("Couldn't read CA certificate: %s", err)
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}
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certPool.AppendCertsFromPEM(file)
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config.RootCAs = certPool
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} else {
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// If --tlsverify is not supplied, disable CA validation.
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config.InsecureSkipVerify = true
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}
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return config, nil
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}
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func manage(c *cli.Context) {
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var (
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tlsConfig *tls.Config = nil
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err error
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)
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// If either --tls or --tlsverify are specified, load the certificates.
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if c.Bool("tls") || c.Bool("tlsverify") {
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tlsConfig, err = loadTlsConfig(
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c.String("tlscacert"),
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c.String("tlscert"),
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c.String("tlskey"),
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c.Bool("tlsverify"))
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if err != nil {
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log.Fatal(err)
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}
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}
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cluster := cluster.NewCluster(tlsConfig, c.Float64("overcommit"))
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cluster.Events(&logHandler{})
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if !c.IsSet("discovery") {
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log.Fatal("--discovery required to manage a cluster")
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}
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s, err := strategy.New(c.String("strategy"))
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if err != nil {
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log.Fatal(err)
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}
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// see https://github.com/codegangsta/cli/issues/160
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names := c.StringSlice("filter")
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if c.IsSet("filter") || c.IsSet("f") {
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names = names[3:]
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}
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fs, err := filter.New(names)
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if err != nil {
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log.Fatal(err)
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}
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// get the list of nodes from the discovery service
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go func() {
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d, err := discovery.New(c.String("discovery"), c.Int("heartbeat"))
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if err != nil {
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log.Fatal(err)
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}
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nodes, err := d.Fetch()
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if err != nil {
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log.Fatal(err)
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}
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cluster.UpdateNodes(nodes)
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go d.Watch(cluster.UpdateNodes)
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}()
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sched := scheduler.NewScheduler(
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cluster,
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s,
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fs,
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)
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// see https://github.com/codegangsta/cli/issues/160
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hosts := c.StringSlice("host")
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if c.IsSet("host") || c.IsSet("H") {
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hosts = hosts[1:]
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}
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log.Fatal(api.ListenAndServe(cluster, sched, hosts, c.App.Version, c.Bool("cors"), tlsConfig))
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}
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