docs/cli/manage.go

134 lines
3.4 KiB
Go

package cli
import (
"crypto/tls"
"crypto/x509"
"fmt"
"io/ioutil"
"path"
log "github.com/Sirupsen/logrus"
"github.com/codegangsta/cli"
"github.com/docker/swarm/api"
"github.com/docker/swarm/cluster"
"github.com/docker/swarm/cluster/swarm"
"github.com/docker/swarm/scheduler"
"github.com/docker/swarm/scheduler/filter"
"github.com/docker/swarm/scheduler/strategy"
"github.com/docker/swarm/state"
)
type logHandler struct {
}
func (h *logHandler) Handle(e *cluster.Event) error {
id := e.Id
// Trim IDs to 12 chars.
if len(id) > 12 {
id = id[:12]
}
log.WithFields(log.Fields{"node": e.Engine.Name, "id": id, "from": e.From, "status": e.Status}).Debug("Event received")
return nil
}
// Load the TLS certificates/keys and, if verify is true, the CA.
func loadTLSConfig(ca, cert, key string, verify bool) (*tls.Config, error) {
c, err := tls.LoadX509KeyPair(cert, key)
if err != nil {
return nil, fmt.Errorf("Couldn't load X509 key pair (%s, %s): %s. Key encrypted?",
cert, key, err)
}
config := &tls.Config{
Certificates: []tls.Certificate{c},
MinVersion: tls.VersionTLS10,
}
if verify {
certPool := x509.NewCertPool()
file, err := ioutil.ReadFile(ca)
if err != nil {
return nil, fmt.Errorf("Couldn't read CA certificate: %s", err)
}
certPool.AppendCertsFromPEM(file)
config.RootCAs = certPool
config.ClientAuth = tls.RequireAndVerifyClientCert
config.ClientCAs = certPool
} else {
// If --tlsverify is not supplied, disable CA validation.
config.InsecureSkipVerify = true
}
return config, nil
}
func manage(c *cli.Context) {
var (
tlsConfig *tls.Config
err error
)
// If either --tls or --tlsverify are specified, load the certificates.
if c.Bool("tls") || c.Bool("tlsverify") {
if !c.IsSet("tlscert") || !c.IsSet("tlskey") {
log.Fatal("--tlscert and --tlskey must be provided when using --tls")
}
if c.Bool("tlsverify") && !c.IsSet("tlscacert") {
log.Fatal("--tlscacert must be provided when using --tlsverify")
}
tlsConfig, err = loadTLSConfig(
c.String("tlscacert"),
c.String("tlscert"),
c.String("tlskey"),
c.Bool("tlsverify"))
if err != nil {
log.Fatal(err)
}
} else {
// Otherwise, if neither --tls nor --tlsverify are specified, abort if
// the other flags are passed as they will be ignored.
if c.IsSet("tlscert") || c.IsSet("tlskey") || c.IsSet("tlscacert") {
log.Fatal("--tlscert, --tlskey and --tlscacert require the use of either --tls or --tlsverify")
}
}
store := state.NewStore(path.Join(c.String("rootdir"), "state"))
if err := store.Initialize(); err != nil {
log.Fatal(err)
}
dflag := getDiscovery(c)
if dflag == "" {
log.Fatalf("discovery required to manage a cluster. See '%s manage --help'.", c.App.Name)
}
s, err := strategy.New(c.String("strategy"))
if err != nil {
log.Fatal(err)
}
// see https://github.com/codegangsta/cli/issues/160
names := c.StringSlice("filter")
if c.IsSet("filter") || c.IsSet("f") {
names = names[DefaultFilterNumber:]
}
fs, err := filter.New(names)
if err != nil {
log.Fatal(err)
}
sched := scheduler.New(s, fs)
cluster, err := swarm.NewCluster(sched, store, tlsConfig, dflag, c.StringSlice("cluster-opt"))
if err != nil {
log.Fatal(err)
}
// see https://github.com/codegangsta/cli/issues/160
hosts := c.StringSlice("host")
if c.IsSet("host") || c.IsSet("H") {
hosts = hosts[1:]
}
log.Fatal(api.ListenAndServe(cluster, hosts, c.Bool("cors"), tlsConfig))
}