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Merge pull request #2201 from influxdb/jw-join-urls 

Bring back config join URLs
pull/2209/head
Jason Wilder 2015-04-08 20:56:44 -06:00
parent af682069b8 94f9ad0624
commit 019110c9c0
8 changed files with 70 additions and 35 deletions
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1
CHANGELOG.md
View File

@ -5,6 +5,7 @@
- [#2180](https://github.com/influxdb/influxdb/pull/2180): Allow http write handler to decode gzipped body
- [#2175](https://github.com/influxdb/influxdb/pull/2175): Separate broker and data nodes
- [#2158](https://github.com/influxdb/influxdb/pull/2158): Allow user password to be changed. Thanks @n1tr0g
- [#2201](https://github.com/influxdb/influxdb/pull/2201): Bring back config join URLs
### Bugfixes
- [#2181](https://github.com/influxdb/influxdb/pull/2181): Fix panic on "SHOW DIAGNOSTICS".

10
cmd/influxd/config.go
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@ -122,6 +122,14 @@ type Data struct {
RetentionCreatePeriod Duration `toml:"retention-create-period"`
}
// Initialization contains configuration options for the first time a node boots
type Initialization struct {
// JoinURLs are cluster URLs to use when joining a node to a cluster the first time it boots. After,
// a node is joined to a cluster, these URLS are ignored. These will be overriden at runtime if
// the node is started with the `-join` flag.
JoinURLs string `toml:"join-urls"`
}
// Config represents the configuration format for the influxd binary.
type Config struct {
Hostname string `toml:"hostname"`
@ -131,6 +139,8 @@ type Config struct {
Version string `toml:"-"`
InfluxDBVersion string `toml:"-"`
Initialization Initialization `toml:"initialization"`
Authentication struct {
Enabled bool `toml:"enabled"`
} `toml:"authentication"`

9
cmd/influxd/config_test.go
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@ -39,6 +39,11 @@ write-interval = "1m"
enabled = true
port = 8083
# Controls certain parameters that only take effect until an initial successful
# start-up has occurred.
[initialization]
join-urls = "http://127.0.0.1:8086"
# Configure the http api
[api]
bind-address = "10.1.2.3"
@ -152,6 +157,10 @@ func TestParseConfig(t *testing.T) {
t.Fatalf("port mismatch. got %v, exp %v", c.Port, exp)
}
if c.Initialization.JoinURLs != "http://127.0.0.1:8086" {
t.Fatalf("JoinURLs mistmatch: %v", c.Initialization.JoinURLs)
}
if !c.Authentication.Enabled {
t.Fatalf("authentication enabled mismatch: %v", c.Authentication.Enabled)
}

9
cmd/influxd/handler.go
View File

@ -2,6 +2,7 @@ package main
import (
"log"
"math/rand"
"net/http"
"net/url"
"strings"
@ -73,7 +74,7 @@ func (h *Handler) serveMessaging(w http.ResponseWriter, r *http.Request) {
// serveMetadata responds to broker requests
func (h *Handler) serveMetadata(w http.ResponseWriter, r *http.Request) {
if h.Broker == nil && h.Server == nil {
log.Println("no broker or server configured to handle messaging endpoints")
log.Println("no broker or server configured to handle metadata endpoints")
http.Error(w, "server unavailable", http.StatusServiceUnavailable)
return
}
@ -98,7 +99,7 @@ func (h *Handler) serveMetadata(w http.ResponseWriter, r *http.Request) {
// serveRaft responds to raft requests.
func (h *Handler) serveRaft(w http.ResponseWriter, r *http.Request) {
if h.Log == nil && h.Server == nil {
log.Println("no broker or server configured to handle messaging endpoints")
log.Println("no broker or server configured to handle raft endpoints")
http.Error(w, "server unavailable", http.StatusServiceUnavailable)
return
}
@ -116,7 +117,7 @@ func (h *Handler) serveRaft(w http.ResponseWriter, r *http.Request) {
// serveData responds to data requests
func (h *Handler) serveData(w http.ResponseWriter, r *http.Request) {
if h.Broker == nil && h.Server == nil {
log.Println("no broker or server configured to handle messaging endpoints")
log.Println("no broker or server configured to handle data endpoints")
http.Error(w, "server unavailable", http.StatusServiceUnavailable)
return
}
@ -151,5 +152,5 @@ func (h *Handler) redirect(u []url.URL, w http.ResponseWriter, r *http.Request)
// this is happening frequently, the clients are using a suboptimal endpoint
// Redirect the client to a valid data node that can handle the request
http.Redirect(w, r, u[0].String()+r.RequestURI, http.StatusTemporaryRedirect)
http.Redirect(w, r, u[rand.Intn(len(u))].String()+r.RequestURI, http.StatusTemporaryRedirect)
}

54
cmd/influxd/run.go
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@ -114,8 +114,15 @@ func (cmd *RunCommand) Run(args ...string) error {
cmd.Logger.Println("No config provided, using default settings")
}
// Use the config JoinURLs by default
joinURLs := cmd.config.Initialization.JoinURLs
// If a -join flag was passed, these should override the config
if join != "" {
joinURLs = join
}
cmd.CheckConfig()
cmd.Open(cmd.config, join)
cmd.Open(cmd.config, joinURLs)
// Wait indefinitely.
<-(chan struct{})(nil)
@ -151,6 +158,9 @@ func (cmd *RunCommand) Open(config *Config, join string) (*messaging.Broker, *in
// Open broker & raft log, initialize or join as necessary.
if cmd.config.Broker.Enabled {
cmd.openBroker(joinURLs)
// If were running as a broker locally, always connect to it since it must
// be ready before we can start the data node.
joinURLs = []url.URL{cmd.node.broker.URL()}
}
// Start the broker handler.
@ -423,25 +433,23 @@ func (cmd *RunCommand) openBroker(brokerURLs []url.URL) {
}
index, _ := l.LastLogIndexTerm()
// If we have join URLs and log is not initialized, attempt to join an existing cluster
if len(brokerURLs) > 0 {
if index == 0 {
// Checks to see if the raft index is 0. If it's 0, it might be the first
// node in the cluster and must initialize or join
if index == 0 {
// If we have join URLs, then attemp to join the cluster
if len(brokerURLs) > 0 {
joinLog(l, brokerURLs)
return
}
log.Printf("Node previously joined to a cluster. Ignoring -join urls flag")
}
// Checks to see if the raft index is 0. If it's 0, it's the first
// node in the cluster and must initialize
if index == 0 {
if err := l.Initialize(); err != nil {
log.Fatalf("initialize raft log: %s", err)
}
u := b.Broker.URL()
log.Printf("initialized broker: %s\n", (&u).String())
return
} else {
log.Printf("broker already member of cluster. Using existing state and ignoring join URLs")
}
}
@ -450,9 +458,9 @@ func joinLog(l *raft.Log, brokerURLs []url.URL) {
// Attempts to join each server until successful.
for _, u := range brokerURLs {
if err := l.Join(u); err != nil {
log.Printf("join: failed to connect to raft cluster: %s: %s", u, err)
log.Printf("join: failed to connect to raft cluster: %s: %s", (&u).String(), err)
} else {
log.Printf("join: connected raft log to %s", u)
log.Printf("join: connected raft log to %s", (&u).String())
return
}
}
@ -464,12 +472,7 @@ func (cmd *RunCommand) openServer(joinURLs []url.URL) *influxdb.Server {
// Create messaging client to the brokers.
c := influxdb.NewMessagingClient(cmd.config.ClusterURL())
// If join URLs were passed in then use them to override the client's URLs.
if len(joinURLs) > 0 {
c.SetURLs(joinURLs)
} else if cmd.node.broker != nil {
c.SetURLs([]url.URL{cmd.node.broker.URL()})
}
c.SetURLs(joinURLs)
if err := c.Open(filepath.Join(cmd.config.Data.Dir, messagingClientFile)); err != nil {
log.Fatalf("messaging client error: %s", err)
@ -495,9 +498,9 @@ func (cmd *RunCommand) openServer(joinURLs []url.URL) *influxdb.Server {
// Open server with data directory and broker client.
if err := s.Open(cmd.config.Data.Dir, c); err != nil {
log.Fatalf("failed to open data server: %v", err.Error())
log.Fatalf("failed to open data node: %v", err.Error())
}
log.Printf("data server opened at %s", cmd.config.Data.Dir)
log.Printf("data node opened at %s", cmd.config.Data.Dir)
dataNodeIndex := s.Index()
if dataNodeIndex == 0 {
@ -505,17 +508,16 @@ func (cmd *RunCommand) openServer(joinURLs []url.URL) *influxdb.Server {
joinServer(s, cmd.config.ClusterURL(), joinURLs)
return s
}
log.Printf("Node previously joined to a cluster. Ignoring -join urls flag")
}
if dataNodeIndex == 0 {
if err := s.Initialize(cmd.config.ClusterURL()); err != nil {
log.Fatalf("server initialization error: %s", err)
}
u := cmd.config.ClusterURL()
log.Printf("initialized data node: %s\n", (&u).String())
return s
} else {
log.Printf("data node already member of cluster. Using existing state and ignoring join URLs")
}
return s
@ -536,7 +538,7 @@ func joinServer(s *influxdb.Server, u url.URL, joinURLs []url.URL) {
log.Printf("initialized data node: %s\n", (&u).String())
return
}
log.Printf("join: failed to connect data node: %s: %s", u, err)
log.Printf("join: failed to connect data node: %s: %s", (&u).String(), err)
} else {
log.Printf("join: connected data node to %s", u)
return

1
cmd/influxd/server_integration_test.go
View File

@ -1860,6 +1860,7 @@ func TestSeparateBrokerDataNode(t *testing.T) {
brokerConfig.ReportingDisabled = true
dataConfig := main.NewConfig()
dataConfig.Port = 9001
dataConfig.Broker.Enabled = false
dataConfig.Data.Dir = filepath.Join(tmpDataDir, strconv.Itoa(dataConfig.Port))
dataConfig.ReportingDisabled = true

8
scripts/init.sh
View File

@ -17,6 +17,10 @@
# In the third case we have to define our own functions which are very dumb
# and expect the args to be positioned correctly.
# Command-line options that can be set in /etc/default/influxdb. These will override
# any config file values. Example: "-join http://1.2.3.4:8086"
INFLUXD_OPTS=
if [ -r /lib/lsb/init-functions ]; then
source /lib/lsb/init-functions
fi
@ -117,9 +121,9 @@ case $1 in
log_success_msg "Starting the process" "$name"
if which start-stop-daemon > /dev/null 2>&1; then
start-stop-daemon --chuid influxdb:influxdb --start --quiet --pidfile $pidfile --exec $daemon -- -pidfile $pidfile -config $config >>$STDOUT 2>>$STDERR &
start-stop-daemon --chuid influxdb:influxdb --start --quiet --pidfile $pidfile --exec $daemon -- -pidfile $pidfile -config $config $INFLUXD_OPTS >>$STDOUT 2>>$STDERR &
else
nohup $daemon -pidfile $pidfile -config $config >>$STDOUT 2>>$STDERR &
nohup $daemon -pidfile $pidfile -config $config $INFLUXD_OPTS >>$STDOUT 2>>$STDERR &
fi
log_success_msg "$name process was started"
;;

13
server.go
View File

@ -677,9 +677,8 @@ func (s *Server) Join(u *url.URL, joinURL *url.URL) error {
// the Location header is where we should resend the POST. We also need to re-encode
// body since the buf was already read.
for {
// Should never get here but bail to avoid a infinite redirect loop to be safe
if retries >= 3 {
if retries >= 60 {
return ErrUnableToJoin
}
@ -706,7 +705,15 @@ func (s *Server) Join(u *url.URL, joinURL *url.URL) error {
// We likely tried to join onto a broker which cannot handle this request. It
// has given us the address of a known data node to join instead.
if resp.StatusCode == http.StatusTemporaryRedirect {
joinURL, err = url.Parse(resp.Header.Get("Location"))
redirectURL, err := url.Parse(resp.Header.Get("Location"))
// if we happen to get redirected back to ourselves then we'll never join. This
// may because the heartbeater could have already fired once, registering our endpoints
// as a data node and the broker is redirecting data node requests back to us. In
// this case, just re-request the original URL again util we get a different node.
if redirectURL.Host != u.Host {
joinURL = redirectURL
}
if err != nil {
return err
}