// setupSerf is used to setup and initialize a Serf
func (s *Server) setupSerf(conf *serf.Config, ch chan serf.Event, path string) (*serf.Serf, error) {
conf.Init()
conf.NodeName = fmt.Sprintf("%s.%s", s.config.NodeName, s.config.Region)
conf.Tags["role"] = "nomad"
conf.Tags["region"] = s.config.Region
conf.Tags["dc"] = s.config.Datacenter
conf.Tags["vsn"] = fmt.Sprintf("%d", structs.ApiMajorVersion)
conf.Tags["mvn"] = fmt.Sprintf("%d", structs.ApiMinorVersion)
conf.Tags["build"] = s.config.Build
conf.Tags["port"] = fmt.Sprintf("%d", s.rpcAdvertise.(*net.TCPAddr).Port)
if s.config.Bootstrap || (s.config.DevMode && !s.config.DevDisableBootstrap) {
conf.Tags["bootstrap"] = "1"
}
if s.config.BootstrapExpect != 0 {
conf.Tags["expect"] = fmt.Sprintf("%d", s.config.BootstrapExpect)
}
conf.MemberlistConfig.LogOutput = s.config.LogOutput
conf.LogOutput = s.config.LogOutput
conf.EventCh = ch
if !s.config.DevMode {
conf.SnapshotPath = filepath.Join(s.config.DataDir, path)
if err := ensurePath(conf.SnapshotPath, false); err != nil {
return nil, err
}
}
conf.ProtocolVersion = protocolVersionMap[s.config.ProtocolVersion]
conf.RejoinAfterLeave = true
conf.Merge = &serfMergeDelegate{}
// Until Nomad supports this fully, we disable automatic resolution.
// When enabled, the Serf gossip may just turn off if we are the minority
// node which is rather unexpected.
conf.EnableNameConflictResolution = false
return serf.Create(conf)
}
// Start creates a new agent, potentially returning an error
func Create(agentConf *Config, conf *serf.Config, logOutput io.Writer) (*Agent, error) {
// Ensure we have a log sink
if logOutput == nil {
logOutput = os.Stderr
}
// Setup the underlying loggers
conf.MemberlistConfig.LogOutput = logOutput
conf.LogOutput = logOutput
// Create a channel to listen for events from Serf
eventCh := make(chan serf.Event, 64)
conf.EventCh = eventCh
// Setup the agent
agent := &Agent{
conf: conf,
agentConf: agentConf,
eventCh: eventCh,
eventHandlers: make(map[EventHandler]struct{}),
logger: log.New(logOutput, "", log.LstdFlags),
shutdownCh: make(chan struct{}),
}
// Restore agent tags from a tags file
if agentConf.TagsFile != "" {
if err := agent.loadTagsFile(agentConf.TagsFile); err != nil {
return nil, err
}
}
return agent, nil
}
// setupSerf is used to setup and initialize a Serf
func (s *Server) setupSerf(conf *serf.Config, ch chan serf.Event, path string, wan bool) (*serf.Serf, error) {
addr := s.rpcListener.Addr().(*net.TCPAddr)
conf.Init()
if wan {
conf.NodeName = fmt.Sprintf("%s.%s", s.config.NodeName, s.config.Datacenter)
} else {
conf.NodeName = s.config.NodeName
}
conf.Tags["role"] = "consul"
conf.Tags["dc"] = s.config.Datacenter
conf.Tags["vsn"] = fmt.Sprintf("%d", s.config.ProtocolVersion)
conf.Tags["vsn_min"] = fmt.Sprintf("%d", ProtocolVersionMin)
conf.Tags["vsn_max"] = fmt.Sprintf("%d", ProtocolVersionMax)
conf.Tags["build"] = s.config.Build
conf.Tags["port"] = fmt.Sprintf("%d", addr.Port)
if s.config.Bootstrap {
conf.Tags["bootstrap"] = "1"
}
conf.MemberlistConfig.LogOutput = s.config.LogOutput
conf.LogOutput = s.config.LogOutput
conf.EventCh = ch
conf.SnapshotPath = filepath.Join(s.config.DataDir, path)
conf.ProtocolVersion = protocolVersionMap[s.config.ProtocolVersion]
conf.RejoinAfterLeave = s.config.RejoinAfterLeave
// Until Consul supports this fully, we disable automatic resolution.
// When enabled, the Serf gossip may just turn off if we are the minority
// node which is rather unexpected.
conf.EnableNameConflictResolution = false
if err := ensurePath(conf.SnapshotPath, false); err != nil {
return nil, err
}
return serf.Create(conf)
}
// initSerf initializes serf and advertizes this nodes RPC port to other nodes.
func (n *Node) initSerf(config *serf.Config) error {
config.NodeName = n.name
config.EventCh = n.eventCh
// Advertize the RPC port
tags := map[string]string{
externalRpcTag: strconv.Itoa(n.port),
}
config.Tags = tags
// Start serf for discovery
s, err := serf.Create(config)
if err != nil {
return err
}
n.serf = s
return nil
}
func testAgentWithConfig(t *testing.T, agentConfig *agent.Config,
serfConfig *serf.Config) *agent.Agent {
serfConfig.MemberlistConfig.BindAddr = testutil.GetBindAddr().String()
serfConfig.MemberlistConfig.ProbeInterval = 50 * time.Millisecond
serfConfig.MemberlistConfig.ProbeTimeout = 25 * time.Millisecond
serfConfig.MemberlistConfig.SuspicionMult = 1
serfConfig.NodeName = serfConfig.MemberlistConfig.BindAddr
serfConfig.Tags = map[string]string{"role": "test", "tag1": "foo", "tag2": "bar"}
agent, err := agent.Create(agentConfig, serfConfig, nil)
if err != nil {
t.Fatalf("err: %s", err)
}
if err := agent.Start(); err != nil {
t.Fatalf("err: %s", err)
}
return agent
}
// setupSerf is used to setup and initialize a Serf
func (c *Client) setupSerf(conf *serf.Config, ch chan serf.Event, path string) (*serf.Serf, error) {
conf.Init()
conf.NodeName = c.config.NodeName
conf.Tags["role"] = "node"
conf.Tags["dc"] = c.config.Datacenter
conf.Tags["vsn"] = fmt.Sprintf("%d", c.config.ProtocolVersion)
conf.Tags["vsn_min"] = fmt.Sprintf("%d", ProtocolVersionMin)
conf.Tags["vsn_max"] = fmt.Sprintf("%d", ProtocolVersionMax)
conf.Tags["build"] = c.config.Build
conf.MemberlistConfig.LogOutput = c.config.LogOutput
conf.LogOutput = c.config.LogOutput
conf.EventCh = ch
conf.SnapshotPath = filepath.Join(c.config.DataDir, path)
conf.ProtocolVersion = protocolVersionMap[c.config.ProtocolVersion]
conf.RejoinAfterLeave = c.config.RejoinAfterLeave
conf.Merge = &lanMergeDelegate{dc: c.config.Datacenter}
conf.DisableCoordinates = c.config.DisableCoordinates
if err := ensurePath(conf.SnapshotPath, false); err != nil {
return nil, err
}
return serf.Create(conf)
}
func testAgentWithConfig(agentConfig *Config, serfConfig *serf.Config,
logOutput io.Writer) *Agent {
if logOutput == nil {
logOutput = os.Stderr
}
serfConfig.MemberlistConfig.ProbeInterval = 100 * time.Millisecond
serfConfig.MemberlistConfig.BindAddr = testutil.GetBindAddr().String()
serfConfig.NodeName = serfConfig.MemberlistConfig.BindAddr
agent, err := Create(agentConfig, serfConfig, logOutput)
if err != nil {
panic(err)
}
return agent
}
// setupSerf is used to setup and initialize a Serf
func (s *Server) setupSerf(conf *serf.Config, ch chan serf.Event, path string) (*serf.Serf, error) {
addr := s.rpcListener.Addr().(*net.TCPAddr)
conf.Init()
conf.NodeName = s.config.NodeName
conf.Tags["role"] = "consul"
conf.Tags["dc"] = s.config.Datacenter
conf.Tags["vsn"] = fmt.Sprintf("%d", s.config.ProtocolVersion)
conf.Tags["vsn_min"] = fmt.Sprintf("%d", ProtocolVersionMin)
conf.Tags["vsn_max"] = fmt.Sprintf("%d", ProtocolVersionMax)
conf.Tags["port"] = fmt.Sprintf("%d", addr.Port)
if s.config.Bootstrap {
conf.Tags["bootstrap"] = "1"
}
conf.MemberlistConfig.LogOutput = s.config.LogOutput
conf.LogOutput = s.config.LogOutput
conf.EventCh = ch
conf.SnapshotPath = filepath.Join(s.config.DataDir, path)
conf.ProtocolVersion = protocolVersionMap[s.config.ProtocolVersion]
if err := ensurePath(conf.SnapshotPath, false); err != nil {
return nil, err
}
return serf.Create(conf)
}