Merge pull request #2815 from hashicorp/advanced-autopilot-oss

Add advanced autopilot config/docs
This commit is contained in:
Kyle Havlovitz 2017-03-22 15:46:08 -07:00 committed by GitHub
commit d198287a62
34 changed files with 1296 additions and 31 deletions

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@ -93,6 +93,15 @@ type AutopilotConfiguration struct {
// applicable with Raft protocol version 3 or higher.
ServerStabilizationTime *ReadableDuration
// (Enterprise-only) RedundancyZoneTag is the node tag to use for separating
// servers into zones for redundancy. If left blank, this feature will be disabled.
RedundancyZoneTag string
// (Enterprise-only) DisableUpgradeMigration will disable Autopilot's upgrade migration
// strategy of waiting until enough newer-versioned servers have been added to the
// cluster before promoting them to voters.
DisableUpgradeMigration bool
// CreateIndex holds the index corresponding the creation of this configuration.
// This is a read-only field.
CreateIndex uint64
@ -118,6 +127,12 @@ type ServerHealth struct {
// The status of the SerfHealth check for the server.
SerfStatus string
// Version is the Consul version of the server.
Version string
// Leader is whether this server is currently the leader.
Leader bool
// LastContact is the time since this node's last contact with the leader.
LastContact *ReadableDuration

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@ -428,6 +428,15 @@ func (a *Agent) consulConfig() *consul.Config {
if a.config.Autopilot.ServerStabilizationTime != nil {
base.AutopilotConfig.ServerStabilizationTime = *a.config.Autopilot.ServerStabilizationTime
}
if a.config.NonVotingServer {
base.NonVoter = a.config.NonVotingServer
}
if a.config.Autopilot.RedundancyZoneTag != "" {
base.AutopilotConfig.RedundancyZoneTag = a.config.Autopilot.RedundancyZoneTag
}
if a.config.Autopilot.DisableUpgradeMigration != nil {
base.AutopilotConfig.DisableUpgradeMigration = *a.config.Autopilot.DisableUpgradeMigration
}
// Format the build string
revision := a.config.Revision

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@ -20,6 +20,7 @@ import (
"github.com/hashicorp/consul/logger"
"github.com/hashicorp/consul/testutil"
"github.com/hashicorp/consul/types"
"github.com/hashicorp/consul/version"
"github.com/hashicorp/go-uuid"
"github.com/hashicorp/raft"
)
@ -37,13 +38,17 @@ const (
numPortsPerIndex
)
func init() {
version.Version = "0.8.0"
}
var offset uint64 = basePortNumber
func nextConfig() *Config {
idx := int(atomic.AddUint64(&offset, numPortsPerIndex))
conf := DefaultConfig()
conf.Version = "a.b"
conf.Version = version.Version
conf.VersionPrerelease = "c.d"
conf.AdvertiseAddr = "127.0.0.1"
conf.Bootstrap = true

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@ -109,6 +109,10 @@ func (c *Command) readConfig() *Config {
f.StringVar(&cmdConfig.EncryptKey, "encrypt", "", "Provides the gossip encryption key.")
f.BoolVar(&cmdConfig.Server, "server", false, "Switches agent to server mode.")
f.BoolVar(&cmdConfig.NonVotingServer, "non-voting-server", false,
"(Enterprise-only) This flag is used to make the server not participate in the Raft quorum, "+
"and have it only receive the data replication stream. This can be used to add read scalability "+
"to a cluster in cases where a high volume of reads to servers are needed.")
f.BoolVar(&cmdConfig.Bootstrap, "bootstrap", false, "Sets server to bootstrap mode.")
f.IntVar(&cmdConfig.BootstrapExpect, "bootstrap-expect", 0, "Sets server to expect bootstrap mode.")
f.StringVar(&cmdConfig.Domain, "domain", "", "Domain to use for DNS interface.")

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@ -12,6 +12,7 @@ import (
"github.com/hashicorp/consul/command/base"
"github.com/hashicorp/consul/testutil"
"github.com/hashicorp/consul/version"
"github.com/mitchellh/cli"
)
@ -70,6 +71,7 @@ func TestRetryJoin(t *testing.T) {
}()
cmd := &Command{
Version: version.Version,
ShutdownCh: shutdownCh,
Command: baseCommand(new(cli.MockUi)),
}

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@ -280,6 +280,15 @@ type Autopilot struct {
// applicable with Raft protocol version 3 or higher.
ServerStabilizationTime *time.Duration `mapstructure:"-" json:"-"`
ServerStabilizationTimeRaw string `mapstructure:"server_stabilization_time"`
// (Enterprise-only) RedundancyZoneTag is the Meta tag to use for separating servers
// into zones for redundancy. If left blank, this feature will be disabled.
RedundancyZoneTag string `mapstructure:"redundancy_zone_tag"`
// (Enterprise-only) DisableUpgradeMigration will disable Autopilot's upgrade migration
// strategy of waiting until enough newer-versioned servers have been added to the
// cluster before promoting them to voters.
DisableUpgradeMigration *bool `mapstructure:"disable_upgrade_migration"`
}
// Config is the configuration that can be set for an Agent.
@ -306,6 +315,10 @@ type Config struct {
// in leader election, etc.
Server bool `mapstructure:"server"`
// (Enterprise-only) NonVotingServer is whether this server will act as a non-voting member
// of the cluster to help provide read scalability.
NonVotingServer bool `mapstructure:"non_voting_server"`
// Datacenter is the datacenter this node is in. Defaults to dc1
Datacenter string `mapstructure:"datacenter"`
@ -1378,6 +1391,9 @@ func MergeConfig(a, b *Config) *Config {
if b.Server == true {
result.Server = b.Server
}
if b.NonVotingServer == true {
result.NonVotingServer = b.NonVotingServer
}
if b.LeaveOnTerm != nil {
result.LeaveOnTerm = b.LeaveOnTerm
}
@ -1396,6 +1412,12 @@ func MergeConfig(a, b *Config) *Config {
if b.Autopilot.ServerStabilizationTime != nil {
result.Autopilot.ServerStabilizationTime = b.Autopilot.ServerStabilizationTime
}
if b.Autopilot.RedundancyZoneTag != "" {
result.Autopilot.RedundancyZoneTag = b.Autopilot.RedundancyZoneTag
}
if b.Autopilot.DisableUpgradeMigration != nil {
result.Autopilot.DisableUpgradeMigration = b.Autopilot.DisableUpgradeMigration
}
if b.Telemetry.DisableHostname == true {
result.Telemetry.DisableHostname = true
}

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@ -1107,7 +1107,9 @@ func TestDecodeConfig_Autopilot(t *testing.T) {
"cleanup_dead_servers": true,
"last_contact_threshold": "100ms",
"max_trailing_logs": 10,
"server_stabilization_time": "10s"
"server_stabilization_time": "10s",
"redundancy_zone_tag": "az",
"disable_upgrade_migration": true
}}`
config, err := DecodeConfig(bytes.NewReader([]byte(input)))
if err != nil {
@ -1125,6 +1127,12 @@ func TestDecodeConfig_Autopilot(t *testing.T) {
if config.Autopilot.ServerStabilizationTime == nil || *config.Autopilot.ServerStabilizationTime != 10*time.Second {
t.Fatalf("bad: %#v", config)
}
if config.Autopilot.RedundancyZoneTag != "az" {
t.Fatalf("bad: %#v", config)
}
if config.Autopilot.DisableUpgradeMigration == nil || !*config.Autopilot.DisableUpgradeMigration {
t.Fatalf("bad: %#v", config)
}
}
func TestDecodeConfig_Services(t *testing.T) {

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@ -191,6 +191,8 @@ func (s *HTTPServer) OperatorAutopilotConfiguration(resp http.ResponseWriter, re
LastContactThreshold: api.NewReadableDuration(reply.LastContactThreshold),
MaxTrailingLogs: reply.MaxTrailingLogs,
ServerStabilizationTime: api.NewReadableDuration(reply.ServerStabilizationTime),
RedundancyZoneTag: reply.RedundancyZoneTag,
DisableUpgradeMigration: reply.DisableUpgradeMigration,
CreateIndex: reply.CreateIndex,
ModifyIndex: reply.ModifyIndex,
}
@ -213,6 +215,8 @@ func (s *HTTPServer) OperatorAutopilotConfiguration(resp http.ResponseWriter, re
LastContactThreshold: conf.LastContactThreshold.Duration(),
MaxTrailingLogs: conf.MaxTrailingLogs,
ServerStabilizationTime: conf.ServerStabilizationTime.Duration(),
RedundancyZoneTag: conf.RedundancyZoneTag,
DisableUpgradeMigration: conf.DisableUpgradeMigration,
}
// Check for cas value
@ -299,6 +303,8 @@ func (s *HTTPServer) OperatorServerHealth(resp http.ResponseWriter, req *http.Re
ID: server.ID,
Name: server.Name,
Address: server.Address,
Version: server.Version,
Leader: server.Leader,
SerfStatus: server.SerfStatus.String(),
LastContact: api.NewReadableDuration(server.LastContact),
LastTerm: server.LastTerm,

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@ -59,6 +59,8 @@ func (c *OperatorAutopilotGetCommand) Run(args []string) int {
c.Ui.Output(fmt.Sprintf("LastContactThreshold = %v", config.LastContactThreshold.String()))
c.Ui.Output(fmt.Sprintf("MaxTrailingLogs = %v", config.MaxTrailingLogs))
c.Ui.Output(fmt.Sprintf("ServerStabilizationTime = %v", config.ServerStabilizationTime.String()))
c.Ui.Output(fmt.Sprintf("RedundancyZoneTag = %q", config.RedundancyZoneTag))
c.Ui.Output(fmt.Sprintf("DisableUpgradeMigration = %v", config.DisableUpgradeMigration))
return 0
}

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@ -34,6 +34,8 @@ func (c *OperatorAutopilotSetCommand) Run(args []string) int {
var maxTrailingLogs base.UintValue
var lastContactThreshold base.DurationValue
var serverStabilizationTime base.DurationValue
var redundancyZoneTag base.StringValue
var disableUpgradeMigration base.BoolValue
f := c.Command.NewFlagSet(c)
@ -52,6 +54,12 @@ func (c *OperatorAutopilotSetCommand) Run(args []string) int {
"'healthy' state before being added to the cluster. Only takes effect if all "+
"servers are running Raft protocol version 3 or higher. Must be a duration "+
"value such as `10s`.")
f.Var(&redundancyZoneTag, "redundancy-zone-tag",
"(Enterprise-only) Controls the node_meta tag name used for separating servers into "+
"different redundancy zones.")
f.Var(&disableUpgradeMigration, "disable-upgrade-migration",
"(Enterprise-only) Controls whether Consul will avoid promoting new servers until "+
"it can perform a migration. Must be one of `true|false`.")
if err := c.Command.Parse(args); err != nil {
if err == flag.ErrHelp {
@ -78,6 +86,8 @@ func (c *OperatorAutopilotSetCommand) Run(args []string) int {
// Update the config values based on the set flags.
cleanupDeadServers.Merge(&conf.CleanupDeadServers)
redundancyZoneTag.Merge(&conf.RedundancyZoneTag)
disableUpgradeMigration.Merge(&conf.DisableUpgradeMigration)
trailing := uint(conf.MaxTrailingLogs)
maxTrailingLogs.Merge(&trailing)

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@ -15,6 +15,7 @@ import (
"github.com/hashicorp/consul/command/agent"
"github.com/hashicorp/consul/consul"
"github.com/hashicorp/consul/logger"
"github.com/hashicorp/consul/version"
"github.com/mitchellh/cli"
)
@ -23,6 +24,8 @@ var offset uint64
func init() {
// Seed the random number generator
rand.Seed(time.Now().UnixNano())
version.Version = "0.8.0"
}
type agentWrapper struct {
@ -115,6 +118,8 @@ func nextConfig() *agent.Config {
conf.BindAddr = "127.0.0.1"
conf.Server = true
conf.Version = version.Version
conf.Ports.HTTP = 10000 + 10*idx
conf.Ports.HTTPS = 10401 + 10*idx
conf.Ports.SerfLan = 10201 + 10*idx

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@ -8,8 +8,10 @@ package agent
import (
"fmt"
"net"
"regexp"
"strconv"
"github.com/hashicorp/go-version"
"github.com/hashicorp/serf/serf"
)
@ -32,8 +34,10 @@ type Server struct {
WanJoinPort int
Bootstrap bool
Expect int
Build version.Version
Version int
RaftVersion int
NonVoter bool
Addr net.Addr
Status serf.MemberStatus
}
@ -56,6 +60,8 @@ func (s *Server) String() string {
return fmt.Sprintf("%s (Addr: %s/%s) (DC: %s)", s.Name, networkStr, addrStr, s.Datacenter)
}
var versionFormat = regexp.MustCompile(`\d+\.\d+\.\d+`)
// IsConsulServer returns true if a serf member is a consul server
// agent. Returns a bool and a pointer to the Server.
func IsConsulServer(m serf.Member) (bool, *Server) {
@ -82,6 +88,11 @@ func IsConsulServer(m serf.Member) (bool, *Server) {
return false, nil
}
build_version, err := version.NewVersion(versionFormat.FindString(m.Tags["build"]))
if err != nil {
return false, nil
}
wan_join_port := 0
wan_join_port_str, ok := m.Tags["wan_join_port"]
if ok {
@ -106,6 +117,8 @@ func IsConsulServer(m serf.Member) (bool, *Server) {
}
}
_, nonVoter := m.Tags["nonvoter"]
addr := &net.TCPAddr{IP: m.Addr, Port: port}
parts := &Server{
@ -117,9 +130,11 @@ func IsConsulServer(m serf.Member) (bool, *Server) {
Bootstrap: bootstrap,
Expect: expect,
Addr: addr,
Build: *build_version,
Version: vsn,
RaftVersion: raft_vsn,
Status: m.Status,
NonVoter: nonVoter,
}
return true, parts
}

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@ -59,6 +59,7 @@ func TestIsConsulServer(t *testing.T) {
"id": "asdf",
"dc": "east-aws",
"port": "10000",
"build": "0.8.0",
"wan_join_port": "1234",
"vsn": "1",
"expect": "3",
@ -132,11 +133,12 @@ func TestIsConsulServer_Optional(t *testing.T) {
Name: "foo",
Addr: net.IP([]byte{127, 0, 0, 1}),
Tags: map[string]string{
"role": "consul",
"id": "asdf",
"dc": "east-aws",
"port": "10000",
"vsn": "1",
"role": "consul",
"id": "asdf",
"dc": "east-aws",
"port": "10000",
"vsn": "1",
"build": "0.8.0",
// wan_join_port, raft_vsn, and expect are optional and
// should default to zero.
},

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@ -133,12 +133,12 @@ func (b *BasicAutopilot) PromoteNonVoters(autopilotConf *structs.AutopilotConfig
return fmt.Errorf("failed to get raft configuration: %v", err)
}
// Find any non-voters eligible for promotion
var promotions []raft.Server
raftServers := future.Configuration().Servers
voterCount := 0
for _, server := range raftServers {
for _, server := range future.Configuration().Servers {
// If this server has been stable and passing for long enough, promote it to a voter
if server.Suffrage == raft.Nonvoter {
if !isVoter(server.Suffrage) {
health := b.server.getServerHealth(string(server.ID))
if health.IsStable(time.Now(), autopilotConf) {
promotions = append(promotions, server)
@ -148,18 +148,25 @@ func (b *BasicAutopilot) PromoteNonVoters(autopilotConf *structs.AutopilotConfig
}
}
// Exit early if there's nothing to promote
if _, err := b.server.handlePromotions(voterCount, promotions); err != nil {
return err
}
return nil
}
func (s *Server) handlePromotions(voterCount int, promotions []raft.Server) (bool, error) {
if len(promotions) == 0 {
return nil
return false, nil
}
// If there's currently an even number of servers, we can promote the first server in the list
// to get to an odd-sized quorum
newServers := false
if voterCount%2 == 0 {
addFuture := b.server.raft.AddVoter(promotions[0].ID, promotions[0].Address, 0, 0)
addFuture := s.raft.AddVoter(promotions[0].ID, promotions[0].Address, 0, 0)
if err := addFuture.Error(); err != nil {
return fmt.Errorf("failed to add raft peer: %v", err)
return newServers, fmt.Errorf("failed to add raft peer: %v", err)
}
promotions = promotions[1:]
newServers = true
@ -167,13 +174,13 @@ func (b *BasicAutopilot) PromoteNonVoters(autopilotConf *structs.AutopilotConfig
// Promote remaining servers in twos to maintain an odd quorum size
for i := 0; i < len(promotions)-1; i += 2 {
addFirst := b.server.raft.AddVoter(promotions[i].ID, promotions[i].Address, 0, 0)
addFirst := s.raft.AddVoter(promotions[i].ID, promotions[i].Address, 0, 0)
if err := addFirst.Error(); err != nil {
return fmt.Errorf("failed to add raft peer: %v", err)
return newServers, fmt.Errorf("failed to add raft peer: %v", err)
}
addSecond := b.server.raft.AddVoter(promotions[i+1].ID, promotions[i+1].Address, 0, 0)
addSecond := s.raft.AddVoter(promotions[i+1].ID, promotions[i+1].Address, 0, 0)
if err := addSecond.Error(); err != nil {
return fmt.Errorf("failed to add raft peer: %v", err)
return newServers, fmt.Errorf("failed to add raft peer: %v", err)
}
newServers = true
}
@ -181,12 +188,12 @@ func (b *BasicAutopilot) PromoteNonVoters(autopilotConf *structs.AutopilotConfig
// If we added a new server, trigger a check to remove dead servers
if newServers {
select {
case b.server.autopilotRemoveDeadCh <- struct{}{}:
case s.autopilotRemoveDeadCh <- struct{}{}:
default:
}
}
return nil
return newServers, nil
}
// serverHealthLoop monitors the health of the servers in the cluster
@ -264,6 +271,7 @@ func (s *Server) updateClusterHealth() error {
fetchedStats := s.statsFetcher.Fetch(ctx, fetchList)
// Build a current list of server healths
leader := s.raft.Leader()
var clusterHealth structs.OperatorHealthReply
healthyCount := 0
voterCount := 0
@ -271,6 +279,7 @@ func (s *Server) updateClusterHealth() error {
health := structs.ServerHealth{
ID: string(server.ID),
Address: string(server.Address),
Leader: server.Address == leader,
LastContact: -1,
Voter: server.Suffrage == raft.Voter,
}
@ -279,6 +288,7 @@ func (s *Server) updateClusterHealth() error {
if ok {
health.Name = parts.Name
health.SerfStatus = parts.Status
health.Version = parts.Build.String()
if stats, ok := fetchedStats[string(server.ID)]; ok {
if err := s.updateServerHealth(&health, parts, stats, autopilotConf, targetLastIndex); err != nil {
s.logger.Printf("[WARN] consul: error updating server health: %s", err)
@ -372,3 +382,12 @@ func (s *Server) getServerHealth(id string) *structs.ServerHealth {
}
return nil
}
func isVoter(suffrage raft.ServerSuffrage) bool {
switch suffrage {
case raft.Voter, raft.Staging:
return true
default:
return false
}
}

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@ -98,7 +98,6 @@ func TestAutopilot_CleanupDeadServerPeriodic(t *testing.T) {
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.Datacenter = "dc1"
c.Bootstrap = true
c.AutopilotInterval = 100 * time.Millisecond
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()

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@ -80,6 +80,10 @@ type Config struct {
// RaftConfig is the configuration used for Raft in the local DC
RaftConfig *raft.Config
// (Enterprise-only) NonVoter is used to prevent this server from being added
// as a voting member of the Raft cluster.
NonVoter bool
// RPCAddr is the RPC address used by Consul. This should be reachable
// by the WAN and LAN
RPCAddr *net.TCPAddr
@ -330,6 +334,7 @@ func DefaultConfig() *Config {
}
conf := &Config{
Build: "0.8.0",
Datacenter: DefaultDC,
NodeName: hostname,
RPCAddr: DefaultRPCAddr,

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@ -448,6 +448,15 @@ func (c *consulFSM) Restore(old io.ReadCloser) error {
return err
}
case structs.AutopilotRequestType:
var req structs.AutopilotConfig
if err := dec.Decode(&req); err != nil {
return err
}
if err := restore.Autopilot(&req); err != nil {
return err
}
default:
return fmt.Errorf("Unrecognized msg type: %v", msgType)
}
@ -514,6 +523,11 @@ func (s *consulSnapshot) Persist(sink raft.SnapshotSink) error {
return err
}
if err := s.persistAutopilot(sink, encoder); err != nil {
sink.Cancel()
return err
}
return nil
}
@ -677,6 +691,21 @@ func (s *consulSnapshot) persistPreparedQueries(sink raft.SnapshotSink,
return nil
}
func (s *consulSnapshot) persistAutopilot(sink raft.SnapshotSink,
encoder *codec.Encoder) error {
autopilot, err := s.state.Autopilot()
if err != nil {
return err
}
sink.Write([]byte{byte(structs.AutopilotRequestType)})
if err := encoder.Encode(autopilot); err != nil {
return err
}
return nil
}
func (s *consulSnapshot) Release() {
s.state.Close()
}

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@ -13,6 +13,7 @@ import (
"github.com/hashicorp/consul/types"
"github.com/hashicorp/go-uuid"
"github.com/hashicorp/raft"
"time"
)
type MockSink struct {
@ -423,6 +424,15 @@ func TestFSM_SnapshotRestore(t *testing.T) {
t.Fatalf("err: %s", err)
}
autopilotConf := &structs.AutopilotConfig{
CleanupDeadServers: true,
LastContactThreshold: 100 * time.Millisecond,
MaxTrailingLogs: 222,
}
if err := fsm.state.AutopilotSetConfig(15, autopilotConf); err != nil {
t.Fatalf("err: %s", err)
}
// Snapshot
snap, err := fsm.Snapshot()
if err != nil {
@ -564,6 +574,15 @@ func TestFSM_SnapshotRestore(t *testing.T) {
t.Fatalf("bad: %#v", queries[0])
}
// Verify autopilot config is restored.
_, restoredConf, err := fsm2.state.AutopilotConfig()
if err != nil {
t.Fatalf("err: %s", err)
}
if !reflect.DeepEqual(restoredConf, autopilotConf) {
t.Fatalf("bad: %#v, %#v", restoredConf, autopilotConf)
}
// Snapshot
snap, err = fsm2.Snapshot()
if err != nil {
@ -1314,6 +1333,67 @@ func TestFSM_Txn(t *testing.T) {
}
}
func TestFSM_Autopilot(t *testing.T) {
fsm, err := NewFSM(nil, os.Stderr)
if err != nil {
t.Fatalf("err: %v", err)
}
// Set the autopilot config using a request.
req := structs.AutopilotSetConfigRequest{
Datacenter: "dc1",
Config: structs.AutopilotConfig{
CleanupDeadServers: true,
LastContactThreshold: 10 * time.Second,
MaxTrailingLogs: 300,
},
}
buf, err := structs.Encode(structs.AutopilotRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp := fsm.Apply(makeLog(buf))
if _, ok := resp.(error); ok {
t.Fatalf("bad: %v", resp)
}
// Verify key is set directly in the state store.
_, config, err := fsm.state.AutopilotConfig()
if err != nil {
t.Fatalf("err: %v", err)
}
if config.CleanupDeadServers != req.Config.CleanupDeadServers {
t.Fatalf("bad: %v", config.CleanupDeadServers)
}
if config.LastContactThreshold != req.Config.LastContactThreshold {
t.Fatalf("bad: %v", config.LastContactThreshold)
}
if config.MaxTrailingLogs != req.Config.MaxTrailingLogs {
t.Fatalf("bad: %v", config.MaxTrailingLogs)
}
// Now use CAS and provide an old index
req.CAS = true
req.Config.CleanupDeadServers = false
req.Config.ModifyIndex = config.ModifyIndex - 1
buf, err = structs.Encode(structs.AutopilotRequestType, req)
if err != nil {
t.Fatalf("err: %v", err)
}
resp = fsm.Apply(makeLog(buf))
if _, ok := resp.(error); ok {
t.Fatalf("bad: %v", resp)
}
_, config, err = fsm.state.AutopilotConfig()
if err != nil {
t.Fatalf("err: %v", err)
}
if !config.CleanupDeadServers {
t.Fatalf("bad: %v", config.CleanupDeadServers)
}
}
func TestFSM_IgnoreUnknown(t *testing.T) {
fsm, err := NewFSM(nil, os.Stderr)
if err != nil {

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@ -57,7 +57,7 @@ func (s *Server) lanEventHandler() {
s.localMemberEvent(e.(serf.MemberEvent))
case serf.EventUser:
s.localEvent(e.(serf.UserEvent))
case serf.EventMemberUpdate: // Ignore
case serf.EventMemberUpdate:
s.localMemberEvent(e.(serf.MemberEvent))
case serf.EventQuery: // Ignore
default:

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@ -265,7 +265,9 @@ func NewServer(config *Config) (*Server, error) {
tombstoneGC: gc,
shutdownCh: make(chan struct{}),
}
s.autopilotPolicy = &BasicAutopilot{s}
// Set up the autopilot policy
s.autopilotPolicy = &BasicAutopilot{server: s}
// Initialize the stats fetcher that autopilot will use.
s.statsFetcher = NewStatsFetcher(logger, s.connPool, s.config.Datacenter)
@ -380,6 +382,9 @@ func (s *Server) setupSerf(conf *serf.Config, ch chan serf.Event, path string, w
if s.config.BootstrapExpect != 0 {
conf.Tags["expect"] = fmt.Sprintf("%d", s.config.BootstrapExpect)
}
if s.config.NonVoter {
conf.Tags["nonvoter"] = "1"
}
conf.MemberlistConfig.LogOutput = s.config.LogOutput
conf.LogOutput = s.config.LogOutput
conf.EventCh = ch

View File

@ -73,6 +73,12 @@ func testServerConfig(t *testing.T, NodeName string) (string, *Config) {
config.ReconcileInterval = 100 * time.Millisecond
config.AutopilotConfig.ServerStabilizationTime = 100 * time.Millisecond
config.ServerHealthInterval = 50 * time.Millisecond
config.AutopilotInterval = 100 * time.Millisecond
config.Build = "0.8.0"
config.CoordinateUpdatePeriod = 100 * time.Millisecond
return dir, config
}

View File

@ -55,10 +55,11 @@ func (m *mockCluster) AddMember(dc string, name string, coord *coordinate.Coordi
Addr: net.ParseIP(fmt.Sprintf("127.0.0.%d", m.addr)),
Port: 8300,
Tags: map[string]string{
"dc": dc,
"role": "consul",
"port": "8300",
"vsn": "3",
"dc": dc,
"role": "consul",
"port": "8300",
"build": "0.8.0",
"vsn": "3",
},
}
m.members = append(m.members, member)

View File

@ -7,6 +7,30 @@ import (
"github.com/hashicorp/go-memdb"
)
// Autopilot is used to pull the autopilot config from the snapshot.
func (s *StateSnapshot) Autopilot() (*structs.AutopilotConfig, error) {
c, err := s.tx.First("autopilot-config", "id")
if err != nil {
return nil, err
}
config, ok := c.(*structs.AutopilotConfig)
if !ok {
return nil, nil
}
return config, nil
}
// Autopilot is used when restoring from a snapshot.
func (s *StateRestore) Autopilot(config *structs.AutopilotConfig) error {
if err := s.tx.Insert("autopilot-config", config); err != nil {
return fmt.Errorf("failed restoring autopilot config: %s", err)
}
return nil
}
// AutopilotConfig is used to get the current Autopilot configuration.
func (s *StateStore) AutopilotConfig() (uint64, *structs.AutopilotConfig, error) {
tx := s.db.Txn(false)

View File

@ -58,7 +58,7 @@ func (s *StateSnapshot) PreparedQueries() (structs.PreparedQueries, error) {
return ret, nil
}
// PrepparedQuery is used when restoring from a snapshot. For general inserts,
// PreparedQuery is used when restoring from a snapshot. For general inserts,
// use PreparedQuerySet.
func (s *StateRestore) PreparedQuery(query *structs.PreparedQuery) error {
// If this is a template, compile it, otherwise leave the compiled

View File

@ -26,6 +26,15 @@ type AutopilotConfig struct {
// applicable with Raft protocol version 3 or higher.
ServerStabilizationTime time.Duration
// (Enterprise-only) RedundancyZoneTag is the node tag to use for separating
// servers into zones for redundancy. If left blank, this feature will be disabled.
RedundancyZoneTag string
// (Enterprise-only) DisableUpgradeMigration will disable Autopilot's upgrade migration
// strategy of waiting until enough newer-versioned servers have been added to the
// cluster before promoting them to voters.
DisableUpgradeMigration bool
// RaftIndex stores the create/modify indexes of this configuration.
RaftIndex
}
@ -117,6 +126,12 @@ type ServerHealth struct {
// The status of the SerfHealth check for the server.
SerfStatus serf.MemberStatus
// Version is the Consul version of the server.
Version string
// Leader is whether this server is currently the leader.
Leader bool
// LastContact is the time since this node's last contact with the leader.
LastContact time.Duration

354
vendor/github.com/hashicorp/go-version/LICENSE generated vendored Normal file
View File

@ -0,0 +1,354 @@
Mozilla Public License, version 2.0
1. Definitions
1.1. “Contributor”
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. “Contributor Version”
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributors Contribution.
1.3. “Contribution”
means Covered Software of a particular Contributor.
1.4. “Covered Software”
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. “Incompatible With Secondary Licenses”
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of version
1.1 or earlier of the License, but not also under the terms of a
Secondary License.
1.6. “Executable Form”
means any form of the work other than Source Code Form.
1.7. “Larger Work”
means a work that combines Covered Software with other material, in a separate
file or files, that is not Covered Software.
1.8. “License”
means this document.
1.9. “Licensable”
means having the right to grant, to the maximum extent possible, whether at the
time of the initial grant or subsequently, any and all of the rights conveyed by
this License.
1.10. “Modifications”
means any of the following:
a. any file in Source Code Form that results from an addition to, deletion
from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. “Patent Claims” of a Contributor
means any patent claim(s), including without limitation, method, process,
and apparatus claims, in any patent Licensable by such Contributor that
would be infringed, but for the grant of the License, by the making,
using, selling, offering for sale, having made, import, or transfer of
either its Contributions or its Contributor Version.
1.12. “Secondary License”
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. “Source Code Form”
means the form of the work preferred for making modifications.
1.14. “You” (or “Your”)
means an individual or a legal entity exercising rights under this
License. For legal entities, “You” includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, “control” means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or as
part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its Contributions
or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution become
effective for each Contribution on the date the Contributor first distributes
such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under this
License. No additional rights or licenses will be implied from the distribution
or licensing of Covered Software under this License. Notwithstanding Section
2.1(b) above, no patent license is granted by a Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third partys
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of its
Contributions.
This License does not grant any rights in the trademarks, service marks, or
logos of any Contributor (except as may be necessary to comply with the
notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this License
(see Section 10.2) or under the terms of a Secondary License (if permitted
under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its Contributions
are its original creation(s) or it has sufficient rights to grant the
rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under applicable
copyright doctrines of fair use, fair dealing, or other equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under the
terms of this License. You must inform recipients that the Source Code Form
of the Covered Software is governed by the terms of this License, and how
they can obtain a copy of this License. You may not attempt to alter or
restrict the recipients rights in the Source Code Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this License,
or sublicense it under different terms, provided that the license for
the Executable Form does not attempt to limit or alter the recipients
rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for the
Covered Software. If the Larger Work is a combination of Covered Software
with a work governed by one or more Secondary Licenses, and the Covered
Software is not Incompatible With Secondary Licenses, this License permits
You to additionally distribute such Covered Software under the terms of
such Secondary License(s), so that the recipient of the Larger Work may, at
their option, further distribute the Covered Software under the terms of
either this License or such Secondary License(s).
3.4. Notices
You may not remove or alter the substance of any license notices (including
copyright notices, patent notices, disclaimers of warranty, or limitations
of liability) contained within the Source Code Form of the Covered
Software, except that You may alter any license notices to the extent
required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on behalf
of any Contributor. You must make it absolutely clear that any such
warranty, support, indemnity, or liability obligation is offered by You
alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute, judicial
order, or regulation then You must: (a) comply with the terms of this License
to the maximum extent possible; and (b) describe the limitations and the code
they affect. Such description must be placed in a text file included with all
distributions of the Covered Software under this License. Except to the
extent prohibited by statute or regulation, such description must be
sufficiently detailed for a recipient of ordinary skill to be able to
understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing basis,
if such Contributor fails to notify You of the non-compliance by some
reasonable means prior to 60 days after You have come back into compliance.
Moreover, Your grants from a particular Contributor are reinstated on an
ongoing basis if such Contributor notifies You of the non-compliance by
some reasonable means, this is the first time You have received notice of
non-compliance with this License from such Contributor, and You become
compliant prior to 30 days after Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions, counter-claims,
and cross-claims) alleging that a Contributor Version directly or
indirectly infringes any patent, then the rights granted to You by any and
all Contributors for the Covered Software under Section 2.1 of this License
shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an “as is” basis, without
warranty of any kind, either expressed, implied, or statutory, including,
without limitation, warranties that the Covered Software is free of defects,
merchantable, fit for a particular purpose or non-infringing. The entire
risk as to the quality and performance of the Covered Software is with You.
Should any Covered Software prove defective in any respect, You (not any
Contributor) assume the cost of any necessary servicing, repair, or
correction. This disclaimer of warranty constitutes an essential part of this
License. No use of any Covered Software is authorized under this License
except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from such
partys negligence to the extent applicable law prohibits such limitation.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so this exclusion and limitation may not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts of
a jurisdiction where the defendant maintains its principal place of business
and such litigation shall be governed by laws of that jurisdiction, without
reference to its conflict-of-law provisions. Nothing in this Section shall
prevent a partys ability to bring cross-claims or counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject matter
hereof. If any provision of this License is held to be unenforceable, such
provision shall be reformed only to the extent necessary to make it
enforceable. Any law or regulation which provides that the language of a
contract shall be construed against the drafter shall not be used to construe
this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version of
the License under which You originally received the Covered Software, or
under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a modified
version of this License if you rename the license and remove any
references to the name of the license steward (except to note that such
modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file, then
You may include the notice in a location (such as a LICENSE file in a relevant
directory) where a recipient would be likely to look for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - “Incompatible With Secondary Licenses” Notice
This Source Code Form is “Incompatible
With Secondary Licenses”, as defined by
the Mozilla Public License, v. 2.0.

65
vendor/github.com/hashicorp/go-version/README.md generated vendored Normal file
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@ -0,0 +1,65 @@
# Versioning Library for Go
[![Build Status](https://travis-ci.org/hashicorp/go-version.svg?branch=master)](https://travis-ci.org/hashicorp/go-version)
go-version is a library for parsing versions and version constraints,
and verifying versions against a set of constraints. go-version
can sort a collection of versions properly, handles prerelease/beta
versions, can increment versions, etc.
Versions used with go-version must follow [SemVer](http://semver.org/).
## Installation and Usage
Package documentation can be found on
[GoDoc](http://godoc.org/github.com/hashicorp/go-version).
Installation can be done with a normal `go get`:
```
$ go get github.com/hashicorp/go-version
```
#### Version Parsing and Comparison
```go
v1, err := version.NewVersion("1.2")
v2, err := version.NewVersion("1.5+metadata")
// Comparison example. There is also GreaterThan, Equal, and just
// a simple Compare that returns an int allowing easy >=, <=, etc.
if v1.LessThan(v2) {
fmt.Printf("%s is less than %s", v1, v2)
}
```
#### Version Constraints
```go
v1, err := version.NewVersion("1.2")
// Constraints example.
constraints, err := version.NewConstraint(">= 1.0, < 1.4")
if constraints.Check(v1) {
fmt.Printf("%s satisfies constraints %s", v1, constraints)
}
```
#### Version Sorting
```go
versionsRaw := []string{"1.1", "0.7.1", "1.4-beta", "1.4", "2"}
versions := make([]*version.Version, len(versionsRaw))
for i, raw := range versionsRaw {
v, _ := version.NewVersion(raw)
versions[i] = v
}
// After this, the versions are properly sorted
sort.Sort(version.Collection(versions))
```
## Issues and Contributing
If you find an issue with this library, please report an issue. If you'd
like, we welcome any contributions. Fork this library and submit a pull
request.

178
vendor/github.com/hashicorp/go-version/constraint.go generated vendored Normal file
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@ -0,0 +1,178 @@
package version
import (
"fmt"
"regexp"
"strings"
)
// Constraint represents a single constraint for a version, such as
// ">= 1.0".
type Constraint struct {
f constraintFunc
check *Version
original string
}
// Constraints is a slice of constraints. We make a custom type so that
// we can add methods to it.
type Constraints []*Constraint
type constraintFunc func(v, c *Version) bool
var constraintOperators map[string]constraintFunc
var constraintRegexp *regexp.Regexp
func init() {
constraintOperators = map[string]constraintFunc{
"": constraintEqual,
"=": constraintEqual,
"!=": constraintNotEqual,
">": constraintGreaterThan,
"<": constraintLessThan,
">=": constraintGreaterThanEqual,
"<=": constraintLessThanEqual,
"~>": constraintPessimistic,
}
ops := make([]string, 0, len(constraintOperators))
for k := range constraintOperators {
ops = append(ops, regexp.QuoteMeta(k))
}
constraintRegexp = regexp.MustCompile(fmt.Sprintf(
`^\s*(%s)\s*(%s)\s*$`,
strings.Join(ops, "|"),
VersionRegexpRaw))
}
// NewConstraint will parse one or more constraints from the given
// constraint string. The string must be a comma-separated list of
// constraints.
func NewConstraint(v string) (Constraints, error) {
vs := strings.Split(v, ",")
result := make([]*Constraint, len(vs))
for i, single := range vs {
c, err := parseSingle(single)
if err != nil {
return nil, err
}
result[i] = c
}
return Constraints(result), nil
}
// Check tests if a version satisfies all the constraints.
func (cs Constraints) Check(v *Version) bool {
for _, c := range cs {
if !c.Check(v) {
return false
}
}
return true
}
// Returns the string format of the constraints
func (cs Constraints) String() string {
csStr := make([]string, len(cs))
for i, c := range cs {
csStr[i] = c.String()
}
return strings.Join(csStr, ",")
}
// Check tests if a constraint is validated by the given version.
func (c *Constraint) Check(v *Version) bool {
return c.f(v, c.check)
}
func (c *Constraint) String() string {
return c.original
}
func parseSingle(v string) (*Constraint, error) {
matches := constraintRegexp.FindStringSubmatch(v)
if matches == nil {
return nil, fmt.Errorf("Malformed constraint: %s", v)
}
check, err := NewVersion(matches[2])
if err != nil {
return nil, err
}
return &Constraint{
f: constraintOperators[matches[1]],
check: check,
original: v,
}, nil
}
//-------------------------------------------------------------------
// Constraint functions
//-------------------------------------------------------------------
func constraintEqual(v, c *Version) bool {
return v.Equal(c)
}
func constraintNotEqual(v, c *Version) bool {
return !v.Equal(c)
}
func constraintGreaterThan(v, c *Version) bool {
return v.Compare(c) == 1
}
func constraintLessThan(v, c *Version) bool {
return v.Compare(c) == -1
}
func constraintGreaterThanEqual(v, c *Version) bool {
return v.Compare(c) >= 0
}
func constraintLessThanEqual(v, c *Version) bool {
return v.Compare(c) <= 0
}
func constraintPessimistic(v, c *Version) bool {
// If the version being checked is naturally less than the constraint, then there
// is no way for the version to be valid against the constraint
if v.LessThan(c) {
return false
}
// We'll use this more than once, so grab the length now so it's a little cleaner
// to write the later checks
cs := len(c.segments)
// If the version being checked has less specificity than the constraint, then there
// is no way for the version to be valid against the constraint
if cs > len(v.segments) {
return false
}
// Check the segments in the constraint against those in the version. If the version
// being checked, at any point, does not have the same values in each index of the
// constraints segments, then it cannot be valid against the constraint.
for i := 0; i < c.si-1; i++ {
if v.segments[i] != c.segments[i] {
return false
}
}
// Check the last part of the segment in the constraint. If the version segment at
// this index is less than the constraints segment at this index, then it cannot
// be valid against the constraint
if c.segments[cs-1] > v.segments[cs-1] {
return false
}
// If nothing has rejected the version by now, it's valid
return true
}

322
vendor/github.com/hashicorp/go-version/version.go generated vendored Normal file
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@ -0,0 +1,322 @@
package version
import (
"bytes"
"fmt"
"reflect"
"regexp"
"strconv"
"strings"
)
// The compiled regular expression used to test the validity of a version.
var versionRegexp *regexp.Regexp
// The raw regular expression string used for testing the validity
// of a version.
const VersionRegexpRaw string = `v?([0-9]+(\.[0-9]+)*?)` +
`(-?([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
`?`
// Version represents a single version.
type Version struct {
metadata string
pre string
segments []int64
si int
}
func init() {
versionRegexp = regexp.MustCompile("^" + VersionRegexpRaw + "$")
}
// NewVersion parses the given version and returns a new
// Version.
func NewVersion(v string) (*Version, error) {
matches := versionRegexp.FindStringSubmatch(v)
if matches == nil {
return nil, fmt.Errorf("Malformed version: %s", v)
}
segmentsStr := strings.Split(matches[1], ".")
segments := make([]int64, len(segmentsStr))
si := 0
for i, str := range segmentsStr {
val, err := strconv.ParseInt(str, 10, 64)
if err != nil {
return nil, fmt.Errorf(
"Error parsing version: %s", err)
}
segments[i] = int64(val)
si++
}
// Even though we could support more than three segments, if we
// got less than three, pad it with 0s. This is to cover the basic
// default usecase of semver, which is MAJOR.MINOR.PATCH at the minimum
for i := len(segments); i < 3; i++ {
segments = append(segments, 0)
}
return &Version{
metadata: matches[7],
pre: matches[4],
segments: segments,
si: si,
}, nil
}
// Must is a helper that wraps a call to a function returning (*Version, error)
// and panics if error is non-nil.
func Must(v *Version, err error) *Version {
if err != nil {
panic(err)
}
return v
}
// Compare compares this version to another version. This
// returns -1, 0, or 1 if this version is smaller, equal,
// or larger than the other version, respectively.
//
// If you want boolean results, use the LessThan, Equal,
// or GreaterThan methods.
func (v *Version) Compare(other *Version) int {
// A quick, efficient equality check
if v.String() == other.String() {
return 0
}
segmentsSelf := v.Segments64()
segmentsOther := other.Segments64()
// If the segments are the same, we must compare on prerelease info
if reflect.DeepEqual(segmentsSelf, segmentsOther) {
preSelf := v.Prerelease()
preOther := other.Prerelease()
if preSelf == "" && preOther == "" {
return 0
}
if preSelf == "" {
return 1
}
if preOther == "" {
return -1
}
return comparePrereleases(preSelf, preOther)
}
// Get the highest specificity (hS), or if they're equal, just use segmentSelf length
lenSelf := len(segmentsSelf)
lenOther := len(segmentsOther)
hS := lenSelf
if lenSelf < lenOther {
hS = lenOther
}
// Compare the segments
// Because a constraint could have more/less specificity than the version it's
// checking, we need to account for a lopsided or jagged comparison
for i := 0; i < hS; i++ {
if i > lenSelf-1 {
// This means Self had the lower specificity
// Check to see if the remaining segments in Other are all zeros
if !allZero(segmentsOther[i:]) {
// if not, it means that Other has to be greater than Self
return -1
}
break
} else if i > lenOther-1 {
// this means Other had the lower specificity
// Check to see if the remaining segments in Self are all zeros -
if !allZero(segmentsSelf[i:]) {
//if not, it means that Self has to be greater than Other
return 1
}
break
}
lhs := segmentsSelf[i]
rhs := segmentsOther[i]
if lhs == rhs {
continue
} else if lhs < rhs {
return -1
}
// Otherwis, rhs was > lhs, they're not equal
return 1
}
// if we got this far, they're equal
return 0
}
func allZero(segs []int64) bool {
for _, s := range segs {
if s != 0 {
return false
}
}
return true
}
func comparePart(preSelf string, preOther string) int {
if preSelf == preOther {
return 0
}
selfNumeric := true
_, err := strconv.ParseInt(preSelf, 10, 64)
if err != nil {
selfNumeric = false
}
otherNumeric := true
_, err = strconv.ParseInt(preOther, 10, 64)
if err != nil {
otherNumeric = false
}
// if a part is empty, we use the other to decide
if preSelf == "" {
if otherNumeric {
return -1
}
return 1
}
if preOther == "" {
if selfNumeric {
return 1
}
return -1
}
if selfNumeric && !otherNumeric {
return -1
} else if !selfNumeric && otherNumeric {
return 1
} else if preSelf > preOther {
return 1
}
return -1
}
func comparePrereleases(v string, other string) int {
// the same pre release!
if v == other {
return 0
}
// split both pre releases for analyse their parts
selfPreReleaseMeta := strings.Split(v, ".")
otherPreReleaseMeta := strings.Split(other, ".")
selfPreReleaseLen := len(selfPreReleaseMeta)
otherPreReleaseLen := len(otherPreReleaseMeta)
biggestLen := otherPreReleaseLen
if selfPreReleaseLen > otherPreReleaseLen {
biggestLen = selfPreReleaseLen
}
// loop for parts to find the first difference
for i := 0; i < biggestLen; i = i + 1 {
partSelfPre := ""
if i < selfPreReleaseLen {
partSelfPre = selfPreReleaseMeta[i]
}
partOtherPre := ""
if i < otherPreReleaseLen {
partOtherPre = otherPreReleaseMeta[i]
}
compare := comparePart(partSelfPre, partOtherPre)
// if parts are equals, continue the loop
if compare != 0 {
return compare
}
}
return 0
}
// Equal tests if two versions are equal.
func (v *Version) Equal(o *Version) bool {
return v.Compare(o) == 0
}
// GreaterThan tests if this version is greater than another version.
func (v *Version) GreaterThan(o *Version) bool {
return v.Compare(o) > 0
}
// LessThan tests if this version is less than another version.
func (v *Version) LessThan(o *Version) bool {
return v.Compare(o) < 0
}
// Metadata returns any metadata that was part of the version
// string.
//
// Metadata is anything that comes after the "+" in the version.
// For example, with "1.2.3+beta", the metadata is "beta".
func (v *Version) Metadata() string {
return v.metadata
}
// Prerelease returns any prerelease data that is part of the version,
// or blank if there is no prerelease data.
//
// Prerelease information is anything that comes after the "-" in the
// version (but before any metadata). For example, with "1.2.3-beta",
// the prerelease information is "beta".
func (v *Version) Prerelease() string {
return v.pre
}
// Segments returns the numeric segments of the version as a slice of ints.
//
// This excludes any metadata or pre-release information. For example,
// for a version "1.2.3-beta", segments will return a slice of
// 1, 2, 3.
func (v *Version) Segments() []int {
segmentSlice := make([]int, len(v.segments))
for i, v := range v.segments {
segmentSlice[i] = int(v)
}
return segmentSlice
}
// Segments64 returns the numeric segments of the version as a slice of int64s.
//
// This excludes any metadata or pre-release information. For example,
// for a version "1.2.3-beta", segments will return a slice of
// 1, 2, 3.
func (v *Version) Segments64() []int64 {
return v.segments
}
// String returns the full version string included pre-release
// and metadata information.
func (v *Version) String() string {
var buf bytes.Buffer
fmtParts := make([]string, len(v.segments))
for i, s := range v.segments {
// We can ignore err here since we've pre-parsed the values in segments
str := strconv.FormatInt(s, 10)
fmtParts[i] = str
}
fmt.Fprintf(&buf, strings.Join(fmtParts, "."))
if v.pre != "" {
fmt.Fprintf(&buf, "-%s", v.pre)
}
if v.metadata != "" {
fmt.Fprintf(&buf, "+%s", v.metadata)
}
return buf.String()
}

View File

@ -0,0 +1,17 @@
package version
// Collection is a type that implements the sort.Interface interface
// so that versions can be sorted.
type Collection []*Version
func (v Collection) Len() int {
return len(v)
}
func (v Collection) Less(i, j int) bool {
return v[i].LessThan(v[j])
}
func (v Collection) Swap(i, j int) {
v[i], v[j] = v[j], v[i]
}

6
vendor/vendor.json vendored
View File

@ -503,6 +503,12 @@
"revision": "64130c7a86d732268a38cb04cfbaf0cc987fda98",
"revisionTime": "2016-07-17T02:21:40Z"
},
{
"checksumSHA1": "tUGxc7rfX0cmhOOUDhMuAZ9rWsA=",
"path": "github.com/hashicorp/go-version",
"revision": "03c5bf6be031b6dd45afec16b1cf94fc8938bc77",
"revisionTime": "2017-02-02T08:07:59Z"
},
{
"checksumSHA1": "d9PxF1XQGLMJZRct2R8qVM/eYlE=",
"path": "github.com/hashicorp/golang-lru",

View File

@ -292,6 +292,8 @@ A JSON body is returned that looks like this:
"LastContactThreshold": "200ms",
"MaxTrailingLogs": 250,
"ServerStabilizationTime": "10s",
"RedundancyZoneTag": "",
"DisableUpgradeMigration": false,
"CreateIndex": 4,
"ModifyIndex": 4
}
@ -321,6 +323,8 @@ body must look like:
"LastContactThreshold": "200ms",
"MaxTrailingLogs": 250,
"ServerStabilizationTime": "10s",
"RedundancyZoneTag": "",
"DisableUpgradeMigration": false,
"CreateIndex": 4,
"ModifyIndex": 4
}
@ -362,6 +366,8 @@ A JSON body is returned that looks like this:
"Name": "node1",
"Address": "127.0.0.1:8300",
"SerfStatus": "alive",
"Version": "0.7.4",
"Leader": true,
"LastContact": "0s",
"LastTerm": 2,
"LastIndex": 46,
@ -374,6 +380,8 @@ A JSON body is returned that looks like this:
"Name": "node2",
"Address": "127.0.0.1:8205",
"SerfStatus": "alive",
"Version": "0.7.4",
"Leader": false,
"LastContact": "27.291304ms",
"LastTerm": 2,
"LastIndex": 46,
@ -400,6 +408,10 @@ The `Servers` list holds detailed health information on each server:
- `SerfStatus` is the SerfHealth check status for the server.
- `Version` is the Consul version of the server.
- `Leader` is whether this server is currently the leader.
- `LastContact` is the time elapsed since this server's last contact with the leader.
- `LastTerm` is the server's last known Raft leader term.

View File

@ -335,6 +335,11 @@ will exit with an error at startup.
participate in a WAN gossip pool with server nodes in other datacenters. Servers act as gateways
to other datacenters and forward traffic as appropriate.
* <a name="_non_voting_server"></a><a href="#_non_voting_server">`-non-voting-server`</a> - (Enterprise-only)
This flag is used to make the server not participate in the Raft quorum, and have it only receive the data
replication stream. This can be used to add read scalability to a cluster in cases where a high volume of
reads to servers are needed.
* <a name="_syslog"></a><a href="#_syslog">`-syslog`</a> - This flag enables logging to syslog. This
is only supported on Linux and OSX. It will result in an error if provided on Windows.
@ -580,6 +585,16 @@ Consul will not enable TLS for the HTTP API unless the `https` port has been ass
cluster. Only takes effect if all servers are running Raft protocol version 3 or higher. Must be a duration value
such as `30s`. Defaults to `10s`.
* <a name="redundancy_zone_tag"></a><a href="#redundancy_zone_tag">`redundancy_zone_tag`</a> - (Enterprise-only)
This controls the [`-node-meta`](#_node_meta) key to use when Autopilot is separating servers into zones for
redundancy. Only one server in each zone can be a voting member at one time. If left blank (the default), this
feature will be disabled.
* <a name="disable_upgrade_migration"></a><a href="#disable_upgrade_migration">`disable_upgrade_migration`</a> - (Enterprise-only)
If set to `true`, this setting will disable Autopilot's upgrade migration strategy in Consul Enterprise of waiting
until enough newer-versioned servers have been added to the cluster before promoting any of them to voters. Defaults
to `false`.
* <a name="bootstrap"></a><a href="#bootstrap">`bootstrap`</a> Equivalent to the
[`-bootstrap` command-line flag](#_bootstrap).

View File

@ -43,6 +43,8 @@ CleanupDeadServers = true
LastContactThreshold = 200ms
MaxTrailingLogs = 250
ServerStabilizationTime = 10s
RedundancyZoneTag = ""
DisableUpgradeMigration = false
```
## set-config
@ -61,16 +63,22 @@ Usage: `consul operator autopilot set-config [options]`
* `-cleanup-dead-servers` - Specifies whether to enable automatic removal of dead servers
upon the successful joining of new servers to the cluster. Must be one of `[true|false]`.
* `last-contact-threshold` - Controls the maximum amount of time a server can go without contact
* `-last-contact-threshold` - Controls the maximum amount of time a server can go without contact
from the leader before being considered unhealthy. Must be a duration value such as `200ms`.
* `max-trailing-logs` - Controls the maximum number of log entries that a server can trail
* `-max-trailing-logs` - Controls the maximum number of log entries that a server can trail
the leader by before being considered unhealthy.
* `server-stabilization-time` - Controls the minimum amount of time a server must be stable in
* `-server-stabilization-time` - Controls the minimum amount of time a server must be stable in
the 'healthy' state before being added to the cluster. Only takes effect if all servers are
running Raft protocol version 3 or higher. Must be a duration value such as `10s`.
* `-disable-upgrade-migration` - (Enterprise-only) Controls whether Consul will avoid promoting
new servers until it can perform a migration. Must be one of `[true|false]`.
* `-redundancy-zone-tag`- (Enterprise-only) Controls the [`-node-meta`](/docs/agent/options.html#_node_meta)
key name used for separating servers into different redundancy zones.
The output looks like this:
```