2016-07-10 21:06:08 +03:00
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// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package embed
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import (
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"fmt"
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"io/ioutil"
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2016-09-13 05:49:22 +03:00
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"net"
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2016-07-28 08:39:06 +03:00
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"net/http"
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2016-07-10 21:06:08 +03:00
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"net/url"
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2017-07-18 00:34:59 +03:00
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"path/filepath"
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2016-07-10 21:06:08 +03:00
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"strings"
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2017-08-19 12:40:15 +03:00
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"time"
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2016-07-10 21:06:08 +03:00
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"github.com/coreos/etcd/etcdserver"
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"github.com/coreos/etcd/pkg/cors"
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2016-08-13 05:55:55 +03:00
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"github.com/coreos/etcd/pkg/netutil"
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2017-05-05 06:15:17 +03:00
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"github.com/coreos/etcd/pkg/srv"
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2016-07-10 21:06:08 +03:00
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"github.com/coreos/etcd/pkg/transport"
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"github.com/coreos/etcd/pkg/types"
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2017-01-23 05:43:03 +03:00
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2016-07-10 21:06:08 +03:00
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"github.com/ghodss/yaml"
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2017-01-22 13:21:19 +03:00
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"google.golang.org/grpc"
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2016-07-10 21:06:08 +03:00
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)
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const (
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ClusterStateFlagNew = "new"
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ClusterStateFlagExisting = "existing"
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2017-08-25 23:26:28 +03:00
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DefaultName = "default"
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DefaultMaxSnapshots = 5
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DefaultMaxWALs = 5
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DefaultMaxTxnOps = uint(128)
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DefaultMaxRequestBytes = 1.5 * 1024 * 1024
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DefaultGRPCKeepAliveMinTime = 5 * time.Second
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DefaultGRPCKeepAliveInterval = 2 * time.Hour
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DefaultGRPCKeepAliveTimeout = 20 * time.Second
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2016-07-10 21:06:08 +03:00
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2016-11-11 15:33:31 +03:00
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DefaultListenPeerURLs = "http://localhost:2380"
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DefaultListenClientURLs = "http://localhost:2379"
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2016-07-10 21:06:08 +03:00
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// maxElectionMs specifies the maximum value of election timeout.
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// More details are listed in ../Documentation/tuning.md#time-parameters.
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maxElectionMs = 50000
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)
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var (
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ErrConflictBootstrapFlags = fmt.Errorf("multiple discovery or bootstrap flags are set. " +
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"Choose one of \"initial-cluster\", \"discovery\" or \"discovery-srv\"")
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ErrUnsetAdvertiseClientURLsFlag = fmt.Errorf("--advertise-client-urls is required when --listen-client-urls is set explicitly")
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2016-08-13 05:55:55 +03:00
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DefaultInitialAdvertisePeerURLs = "http://localhost:2380"
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DefaultAdvertiseClientURLs = "http://localhost:2379"
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2017-03-04 00:32:46 +03:00
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defaultHostname string
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2016-08-13 05:55:55 +03:00
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defaultHostStatus error
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2016-07-10 21:06:08 +03:00
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)
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2016-08-13 05:55:55 +03:00
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func init() {
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2017-03-04 00:32:46 +03:00
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defaultHostname, defaultHostStatus = netutil.GetDefaultHost()
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2016-08-13 05:55:55 +03:00
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}
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2016-07-10 21:06:08 +03:00
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// Config holds the arguments for configuring an etcd server.
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type Config struct {
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// member
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CorsInfo *cors.CORSInfo
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LPUrls, LCUrls []url.URL
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Dir string `json:"data-dir"`
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WalDir string `json:"wal-dir"`
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MaxSnapFiles uint `json:"max-snapshots"`
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MaxWalFiles uint `json:"max-wals"`
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Name string `json:"name"`
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SnapCount uint64 `json:"snapshot-count"`
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2017-09-26 20:06:45 +03:00
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AutoCompactionRetention string `json:"auto-compaction-retention"`
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2017-06-17 01:12:49 +03:00
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AutoCompactionMode string `json:"auto-compaction-mode"`
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2016-07-10 21:06:08 +03:00
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// TickMs is the number of milliseconds between heartbeat ticks.
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// TODO: decouple tickMs and heartbeat tick (current heartbeat tick = 1).
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// make ticks a cluster wide configuration.
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TickMs uint `json:"heartbeat-interval"`
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ElectionMs uint `json:"election-timeout"`
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QuotaBackendBytes int64 `json:"quota-backend-bytes"`
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2017-05-24 03:50:20 +03:00
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MaxTxnOps uint `json:"max-txn-ops"`
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2017-05-23 02:54:50 +03:00
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MaxRequestBytes uint `json:"max-request-bytes"`
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2016-07-10 21:06:08 +03:00
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2017-08-25 23:26:28 +03:00
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// gRPC server options
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// GRPCKeepAliveMinTime is the minimum interval that a client should
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// wait before pinging server. When client pings "too fast", server
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// sends goaway and closes the connection (errors: too_many_pings,
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// http2.ErrCodeEnhanceYourCalm). When too slow, nothing happens.
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// Server expects client pings only when there is any active streams
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// (PermitWithoutStream is set false).
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GRPCKeepAliveMinTime time.Duration `json:"grpc-keepalive-min-time"`
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// GRPCKeepAliveInterval is the frequency of server-to-client ping
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// to check if a connection is alive. Close a non-responsive connection
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// after an additional duration of Timeout. 0 to disable.
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GRPCKeepAliveInterval time.Duration `json:"grpc-keepalive-interval"`
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// GRPCKeepAliveTimeout is the additional duration of wait
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// before closing a non-responsive connection. 0 to disable.
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GRPCKeepAliveTimeout time.Duration `json:"grpc-keepalive-timeout"`
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2016-07-10 21:06:08 +03:00
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// clustering
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APUrls, ACUrls []url.URL
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ClusterState string `json:"initial-cluster-state"`
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DNSCluster string `json:"discovery-srv"`
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Dproxy string `json:"discovery-proxy"`
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Durl string `json:"discovery"`
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InitialCluster string `json:"initial-cluster"`
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InitialClusterToken string `json:"initial-cluster-token"`
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StrictReconfigCheck bool `json:"strict-reconfig-check"`
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2017-01-16 19:55:26 +03:00
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EnableV2 bool `json:"enable-v2"`
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2016-07-10 21:06:08 +03:00
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// security
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ClientTLSInfo transport.TLSInfo
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ClientAutoTLS bool
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PeerTLSInfo transport.TLSInfo
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PeerAutoTLS bool
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// debug
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2017-07-12 20:05:16 +03:00
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Debug bool `json:"debug"`
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LogPkgLevels string `json:"log-package-levels"`
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2017-08-15 21:22:10 +03:00
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EnablePprof bool `json:"enable-pprof"`
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2017-07-12 20:05:16 +03:00
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Metrics string `json:"metrics"`
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ListenMetricsUrls []url.URL
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ListenMetricsUrlsJSON string `json:"listen-metrics-urls"`
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2016-07-10 21:06:08 +03:00
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// ForceNewCluster starts a new cluster even if previously started; unsafe.
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ForceNewCluster bool `json:"force-new-cluster"`
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2016-07-28 08:39:06 +03:00
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// UserHandlers is for registering users handlers and only used for
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// embedding etcd into other applications.
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// The map key is the route path for the handler, and
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// you must ensure it can't be conflicted with etcd's.
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UserHandlers map[string]http.Handler `json:"-"`
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2017-01-23 05:43:03 +03:00
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// ServiceRegister is for registering users' gRPC services. A simple usage example:
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// cfg := embed.NewConfig()
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// cfg.ServerRegister = func(s *grpc.Server) {
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// pb.RegisterFooServer(s, &fooServer{})
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// pb.RegisterBarServer(s, &barServer{})
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// }
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// embed.StartEtcd(cfg)
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2017-01-22 13:21:19 +03:00
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ServiceRegister func(*grpc.Server) `json:"-"`
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2016-07-21 08:13:57 +03:00
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// auth
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AuthToken string `json:"auth-token"`
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2017-08-19 12:40:15 +03:00
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// Experimental flags
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ExperimentalCorruptCheckTime time.Duration `json:"experimental-corrupt-check-time"`
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2017-08-11 08:26:46 +03:00
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ExperimentalEnableV2V3 string `json:"experimental-enable-v2v3"`
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2016-07-10 21:06:08 +03:00
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}
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// configYAML holds the config suitable for yaml parsing
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type configYAML struct {
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Config
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configJSON
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}
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// configJSON has file options that are translated into Config options
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type configJSON struct {
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LPUrlsJSON string `json:"listen-peer-urls"`
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LCUrlsJSON string `json:"listen-client-urls"`
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CorsJSON string `json:"cors"`
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APUrlsJSON string `json:"initial-advertise-peer-urls"`
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ACUrlsJSON string `json:"advertise-client-urls"`
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ClientSecurityJSON securityConfig `json:"client-transport-security"`
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PeerSecurityJSON securityConfig `json:"peer-transport-security"`
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}
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type securityConfig struct {
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CAFile string `json:"ca-file"`
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CertFile string `json:"cert-file"`
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KeyFile string `json:"key-file"`
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CertAuth bool `json:"client-cert-auth"`
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TrustedCAFile string `json:"trusted-ca-file"`
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AutoTLS bool `json:"auto-tls"`
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}
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// NewConfig creates a new Config populated with default values.
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func NewConfig() *Config {
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2016-07-25 21:06:03 +03:00
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lpurl, _ := url.Parse(DefaultListenPeerURLs)
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2016-07-10 21:06:08 +03:00
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apurl, _ := url.Parse(DefaultInitialAdvertisePeerURLs)
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2016-07-25 21:06:03 +03:00
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lcurl, _ := url.Parse(DefaultListenClientURLs)
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2016-07-10 21:06:08 +03:00
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acurl, _ := url.Parse(DefaultAdvertiseClientURLs)
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cfg := &Config{
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2017-08-25 23:26:28 +03:00
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CorsInfo: &cors.CORSInfo{},
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MaxSnapFiles: DefaultMaxSnapshots,
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MaxWalFiles: DefaultMaxWALs,
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Name: DefaultName,
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SnapCount: etcdserver.DefaultSnapCount,
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MaxTxnOps: DefaultMaxTxnOps,
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MaxRequestBytes: DefaultMaxRequestBytes,
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GRPCKeepAliveMinTime: DefaultGRPCKeepAliveMinTime,
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GRPCKeepAliveInterval: DefaultGRPCKeepAliveInterval,
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GRPCKeepAliveTimeout: DefaultGRPCKeepAliveTimeout,
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TickMs: 100,
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ElectionMs: 1000,
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LPUrls: []url.URL{*lpurl},
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LCUrls: []url.URL{*lcurl},
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APUrls: []url.URL{*apurl},
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ACUrls: []url.URL{*acurl},
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ClusterState: ClusterStateFlagNew,
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InitialClusterToken: "etcd-cluster",
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StrictReconfigCheck: true,
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Metrics: "basic",
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EnableV2: true,
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AuthToken: "simple",
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2016-07-10 21:06:08 +03:00
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}
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cfg.InitialCluster = cfg.InitialClusterFromName(cfg.Name)
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return cfg
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}
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func ConfigFromFile(path string) (*Config, error) {
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2016-08-10 19:44:50 +03:00
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cfg := &configYAML{Config: *NewConfig()}
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2016-07-10 21:06:08 +03:00
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if err := cfg.configFromFile(path); err != nil {
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return nil, err
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}
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return &cfg.Config, nil
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}
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func (cfg *configYAML) configFromFile(path string) error {
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b, err := ioutil.ReadFile(path)
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if err != nil {
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return err
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}
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2017-03-28 08:26:02 +03:00
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defaultInitialCluster := cfg.InitialCluster
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2016-07-10 21:06:08 +03:00
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err = yaml.Unmarshal(b, cfg)
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if err != nil {
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return err
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}
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if cfg.LPUrlsJSON != "" {
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u, err := types.NewURLs(strings.Split(cfg.LPUrlsJSON, ","))
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if err != nil {
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plog.Fatalf("unexpected error setting up listen-peer-urls: %v", err)
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}
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cfg.LPUrls = []url.URL(u)
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}
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if cfg.LCUrlsJSON != "" {
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u, err := types.NewURLs(strings.Split(cfg.LCUrlsJSON, ","))
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if err != nil {
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plog.Fatalf("unexpected error setting up listen-client-urls: %v", err)
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}
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cfg.LCUrls = []url.URL(u)
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}
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if cfg.CorsJSON != "" {
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if err := cfg.CorsInfo.Set(cfg.CorsJSON); err != nil {
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plog.Panicf("unexpected error setting up cors: %v", err)
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}
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}
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if cfg.APUrlsJSON != "" {
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u, err := types.NewURLs(strings.Split(cfg.APUrlsJSON, ","))
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if err != nil {
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plog.Fatalf("unexpected error setting up initial-advertise-peer-urls: %v", err)
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}
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cfg.APUrls = []url.URL(u)
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}
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if cfg.ACUrlsJSON != "" {
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u, err := types.NewURLs(strings.Split(cfg.ACUrlsJSON, ","))
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if err != nil {
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plog.Fatalf("unexpected error setting up advertise-peer-urls: %v", err)
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}
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cfg.ACUrls = []url.URL(u)
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}
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2017-07-12 20:05:16 +03:00
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if cfg.ListenMetricsUrlsJSON != "" {
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u, err := types.NewURLs(strings.Split(cfg.ListenMetricsUrlsJSON, ","))
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if err != nil {
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plog.Fatalf("unexpected error setting up listen-metrics-urls: %v", err)
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}
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cfg.ListenMetricsUrls = []url.URL(u)
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}
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2017-03-28 08:26:02 +03:00
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// If a discovery flag is set, clear default initial cluster set by InitialClusterFromName
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if (cfg.Durl != "" || cfg.DNSCluster != "") && cfg.InitialCluster == defaultInitialCluster {
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cfg.InitialCluster = ""
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}
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if cfg.ClusterState == "" {
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cfg.ClusterState = ClusterStateFlagNew
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}
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copySecurityDetails := func(tls *transport.TLSInfo, ysc *securityConfig) {
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tls.CAFile = ysc.CAFile
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tls.CertFile = ysc.CertFile
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tls.KeyFile = ysc.KeyFile
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tls.ClientCertAuth = ysc.CertAuth
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tls.TrustedCAFile = ysc.TrustedCAFile
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}
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copySecurityDetails(&cfg.ClientTLSInfo, &cfg.ClientSecurityJSON)
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copySecurityDetails(&cfg.PeerTLSInfo, &cfg.PeerSecurityJSON)
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cfg.ClientAutoTLS = cfg.ClientSecurityJSON.AutoTLS
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cfg.PeerAutoTLS = cfg.PeerSecurityJSON.AutoTLS
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return cfg.Validate()
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|
|
}
|
|
|
|
|
|
|
|
func (cfg *Config) Validate() error {
|
2016-09-13 05:49:22 +03:00
|
|
|
if err := checkBindURLs(cfg.LPUrls); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if err := checkBindURLs(cfg.LCUrls); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2017-07-12 20:05:16 +03:00
|
|
|
if err := checkBindURLs(cfg.ListenMetricsUrls); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2017-08-09 23:35:09 +03:00
|
|
|
if err := checkHostURLs(cfg.APUrls); err != nil {
|
|
|
|
// TODO: return err in v3.4
|
|
|
|
addrs := make([]string, len(cfg.APUrls))
|
|
|
|
for i := range cfg.APUrls {
|
|
|
|
addrs[i] = cfg.APUrls[i].String()
|
|
|
|
}
|
|
|
|
plog.Warningf("advertise-peer-urls %q is deprecated (%v)", strings.Join(addrs, ","), err)
|
|
|
|
}
|
|
|
|
if err := checkHostURLs(cfg.ACUrls); err != nil {
|
|
|
|
// TODO: return err in v3.4
|
|
|
|
addrs := make([]string, len(cfg.ACUrls))
|
|
|
|
for i := range cfg.ACUrls {
|
|
|
|
addrs[i] = cfg.ACUrls[i].String()
|
|
|
|
}
|
|
|
|
plog.Warningf("advertise-client-urls %q is deprecated (%v)", strings.Join(addrs, ","), err)
|
|
|
|
}
|
2016-09-13 05:49:22 +03:00
|
|
|
|
2016-07-10 21:06:08 +03:00
|
|
|
// Check if conflicting flags are passed.
|
|
|
|
nSet := 0
|
|
|
|
for _, v := range []bool{cfg.Durl != "", cfg.InitialCluster != "", cfg.DNSCluster != ""} {
|
|
|
|
if v {
|
|
|
|
nSet++
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if cfg.ClusterState != ClusterStateFlagNew && cfg.ClusterState != ClusterStateFlagExisting {
|
|
|
|
return fmt.Errorf("unexpected clusterState %q", cfg.ClusterState)
|
|
|
|
}
|
|
|
|
|
|
|
|
if nSet > 1 {
|
|
|
|
return ErrConflictBootstrapFlags
|
|
|
|
}
|
|
|
|
|
|
|
|
if 5*cfg.TickMs > cfg.ElectionMs {
|
|
|
|
return fmt.Errorf("--election-timeout[%vms] should be at least as 5 times as --heartbeat-interval[%vms]", cfg.ElectionMs, cfg.TickMs)
|
|
|
|
}
|
|
|
|
if cfg.ElectionMs > maxElectionMs {
|
|
|
|
return fmt.Errorf("--election-timeout[%vms] is too long, and should be set less than %vms", cfg.ElectionMs, maxElectionMs)
|
|
|
|
}
|
|
|
|
|
|
|
|
// check this last since proxying in etcdmain may make this OK
|
|
|
|
if cfg.LCUrls != nil && cfg.ACUrls == nil {
|
|
|
|
return ErrUnsetAdvertiseClientURLsFlag
|
|
|
|
}
|
|
|
|
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// PeerURLsMapAndToken sets up an initial peer URLsMap and cluster token for bootstrap or discovery.
|
|
|
|
func (cfg *Config) PeerURLsMapAndToken(which string) (urlsmap types.URLsMap, token string, err error) {
|
2017-04-13 02:49:44 +03:00
|
|
|
token = cfg.InitialClusterToken
|
2016-07-10 21:06:08 +03:00
|
|
|
switch {
|
|
|
|
case cfg.Durl != "":
|
|
|
|
urlsmap = types.URLsMap{}
|
|
|
|
// If using discovery, generate a temporary cluster based on
|
|
|
|
// self's advertised peer URLs
|
|
|
|
urlsmap[cfg.Name] = cfg.APUrls
|
|
|
|
token = cfg.Durl
|
|
|
|
case cfg.DNSCluster != "":
|
2017-05-05 06:15:17 +03:00
|
|
|
clusterStrs, cerr := srv.GetCluster("etcd-server", cfg.Name, cfg.DNSCluster, cfg.APUrls)
|
|
|
|
if cerr != nil {
|
|
|
|
plog.Errorf("couldn't resolve during SRV discovery (%v)", cerr)
|
|
|
|
return nil, "", cerr
|
|
|
|
}
|
|
|
|
for _, s := range clusterStrs {
|
|
|
|
plog.Noticef("got bootstrap from DNS for etcd-server at %s", s)
|
2016-07-10 21:06:08 +03:00
|
|
|
}
|
2017-05-05 06:15:17 +03:00
|
|
|
clusterStr := strings.Join(clusterStrs, ",")
|
2016-08-03 03:10:05 +03:00
|
|
|
if strings.Contains(clusterStr, "https://") && cfg.PeerTLSInfo.CAFile == "" {
|
2017-10-05 20:47:51 +03:00
|
|
|
// SRV targets have subdomains under the given DNSCluster, so wildcard matching
|
|
|
|
// is needed.
|
|
|
|
cfg.PeerTLSInfo.ServerName = "*." + cfg.DNSCluster
|
2016-08-03 03:10:05 +03:00
|
|
|
}
|
2016-07-10 21:06:08 +03:00
|
|
|
urlsmap, err = types.NewURLsMap(clusterStr)
|
|
|
|
// only etcd member must belong to the discovered cluster.
|
|
|
|
// proxy does not need to belong to the discovered cluster.
|
|
|
|
if which == "etcd" {
|
|
|
|
if _, ok := urlsmap[cfg.Name]; !ok {
|
|
|
|
return nil, "", fmt.Errorf("cannot find local etcd member %q in SRV records", cfg.Name)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
// We're statically configured, and cluster has appropriately been set.
|
|
|
|
urlsmap, err = types.NewURLsMap(cfg.InitialCluster)
|
|
|
|
}
|
|
|
|
return urlsmap, token, err
|
|
|
|
}
|
|
|
|
|
|
|
|
func (cfg Config) InitialClusterFromName(name string) (ret string) {
|
|
|
|
if len(cfg.APUrls) == 0 {
|
|
|
|
return ""
|
|
|
|
}
|
|
|
|
n := name
|
|
|
|
if name == "" {
|
|
|
|
n = DefaultName
|
|
|
|
}
|
|
|
|
for i := range cfg.APUrls {
|
|
|
|
ret = ret + "," + n + "=" + cfg.APUrls[i].String()
|
|
|
|
}
|
|
|
|
return ret[1:]
|
|
|
|
}
|
|
|
|
|
|
|
|
func (cfg Config) IsNewCluster() bool { return cfg.ClusterState == ClusterStateFlagNew }
|
|
|
|
func (cfg Config) ElectionTicks() int { return int(cfg.ElectionMs / cfg.TickMs) }
|
2016-08-13 05:55:55 +03:00
|
|
|
|
2017-03-04 00:32:46 +03:00
|
|
|
func (cfg Config) defaultPeerHost() bool {
|
|
|
|
return len(cfg.APUrls) == 1 && cfg.APUrls[0].String() == DefaultInitialAdvertisePeerURLs
|
2016-08-13 05:55:55 +03:00
|
|
|
}
|
2016-09-13 05:49:22 +03:00
|
|
|
|
2017-03-04 00:32:46 +03:00
|
|
|
func (cfg Config) defaultClientHost() bool {
|
|
|
|
return len(cfg.ACUrls) == 1 && cfg.ACUrls[0].String() == DefaultAdvertiseClientURLs
|
|
|
|
}
|
|
|
|
|
2017-07-18 00:34:59 +03:00
|
|
|
func (cfg *Config) ClientSelfCert() (err error) {
|
|
|
|
if cfg.ClientAutoTLS && cfg.ClientTLSInfo.Empty() {
|
|
|
|
chosts := make([]string, len(cfg.LCUrls))
|
|
|
|
for i, u := range cfg.LCUrls {
|
|
|
|
chosts[i] = u.Host
|
|
|
|
}
|
|
|
|
cfg.ClientTLSInfo, err = transport.SelfCert(filepath.Join(cfg.Dir, "fixtures", "client"), chosts)
|
|
|
|
return err
|
|
|
|
} else if cfg.ClientAutoTLS {
|
|
|
|
plog.Warningf("ignoring client auto TLS since certs given")
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (cfg *Config) PeerSelfCert() (err error) {
|
|
|
|
if cfg.PeerAutoTLS && cfg.PeerTLSInfo.Empty() {
|
|
|
|
phosts := make([]string, len(cfg.LPUrls))
|
|
|
|
for i, u := range cfg.LPUrls {
|
|
|
|
phosts[i] = u.Host
|
|
|
|
}
|
|
|
|
cfg.PeerTLSInfo, err = transport.SelfCert(filepath.Join(cfg.Dir, "fixtures", "peer"), phosts)
|
|
|
|
return err
|
|
|
|
} else if cfg.PeerAutoTLS {
|
|
|
|
plog.Warningf("ignoring peer auto TLS since certs given")
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2017-03-04 00:32:46 +03:00
|
|
|
// UpdateDefaultClusterFromName updates cluster advertise URLs with, if available, default host,
|
|
|
|
// if advertise URLs are default values(localhost:2379,2380) AND if listen URL is 0.0.0.0.
|
|
|
|
// e.g. advertise peer URL localhost:2380 or listen peer URL 0.0.0.0:2380
|
|
|
|
// then the advertise peer host would be updated with machine's default host,
|
|
|
|
// while keeping the listen URL's port.
|
|
|
|
// User can work around this by explicitly setting URL with 127.0.0.1.
|
|
|
|
// It returns the default hostname, if used, and the error, if any, from getting the machine's default host.
|
2016-12-17 02:01:53 +03:00
|
|
|
// TODO: check whether fields are set instead of whether fields have default value
|
2017-03-04 00:32:46 +03:00
|
|
|
func (cfg *Config) UpdateDefaultClusterFromName(defaultInitialCluster string) (string, error) {
|
|
|
|
if defaultHostname == "" || defaultHostStatus != nil {
|
|
|
|
// update 'initial-cluster' when only the name is specified (e.g. 'etcd --name=abc')
|
|
|
|
if cfg.Name != DefaultName && cfg.InitialCluster == defaultInitialCluster {
|
2016-12-17 02:01:53 +03:00
|
|
|
cfg.InitialCluster = cfg.InitialClusterFromName(cfg.Name)
|
|
|
|
}
|
2017-03-04 00:32:46 +03:00
|
|
|
return "", defaultHostStatus
|
|
|
|
}
|
|
|
|
|
|
|
|
used := false
|
2017-04-18 22:08:59 +03:00
|
|
|
pip, pport := cfg.LPUrls[0].Hostname(), cfg.LPUrls[0].Port()
|
2017-03-04 00:32:46 +03:00
|
|
|
if cfg.defaultPeerHost() && pip == "0.0.0.0" {
|
|
|
|
cfg.APUrls[0] = url.URL{Scheme: cfg.APUrls[0].Scheme, Host: fmt.Sprintf("%s:%s", defaultHostname, pport)}
|
|
|
|
used = true
|
|
|
|
}
|
|
|
|
// update 'initial-cluster' when only the name is specified (e.g. 'etcd --name=abc')
|
|
|
|
if cfg.Name != DefaultName && cfg.InitialCluster == defaultInitialCluster {
|
|
|
|
cfg.InitialCluster = cfg.InitialClusterFromName(cfg.Name)
|
|
|
|
}
|
|
|
|
|
2017-04-18 22:08:59 +03:00
|
|
|
cip, cport := cfg.LCUrls[0].Hostname(), cfg.LCUrls[0].Port()
|
2017-03-04 00:32:46 +03:00
|
|
|
if cfg.defaultClientHost() && cip == "0.0.0.0" {
|
|
|
|
cfg.ACUrls[0] = url.URL{Scheme: cfg.ACUrls[0].Scheme, Host: fmt.Sprintf("%s:%s", defaultHostname, cport)}
|
|
|
|
used = true
|
|
|
|
}
|
|
|
|
dhost := defaultHostname
|
|
|
|
if !used {
|
|
|
|
dhost = ""
|
2016-12-17 02:01:53 +03:00
|
|
|
}
|
2017-03-04 00:32:46 +03:00
|
|
|
return dhost, defaultHostStatus
|
2016-12-17 02:01:53 +03:00
|
|
|
}
|
|
|
|
|
2016-09-13 05:49:22 +03:00
|
|
|
// checkBindURLs returns an error if any URL uses a domain name.
|
|
|
|
// TODO: return error in 3.2.0
|
|
|
|
func checkBindURLs(urls []url.URL) error {
|
|
|
|
for _, url := range urls {
|
|
|
|
if url.Scheme == "unix" || url.Scheme == "unixs" {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
host, _, err := net.SplitHostPort(url.Host)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if host == "localhost" {
|
|
|
|
// special case for local address
|
|
|
|
// TODO: support /etc/hosts ?
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
if net.ParseIP(host) == nil {
|
2017-01-26 06:23:10 +03:00
|
|
|
return fmt.Errorf("expected IP in URL for binding (%s)", url.String())
|
2016-09-13 05:49:22 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
2017-08-09 23:35:09 +03:00
|
|
|
|
|
|
|
func checkHostURLs(urls []url.URL) error {
|
|
|
|
for _, url := range urls {
|
|
|
|
host, _, err := net.SplitHostPort(url.Host)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if host == "" {
|
|
|
|
return fmt.Errorf("unexpected empty host (%s)", url.String())
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|