Only split metrics if there is an udp output (#2799)

closes #2739

CHANGELOG.md

@@ -79,6 +79,8 @@ be deprecated eventually.
 - [#2705](https://github.com/influxdata/telegraf/pull/2705): Kinesis output: add use_random_partitionkey option
 - [#2635](https://github.com/influxdata/telegraf/issues/2635): add tcp keep-alive to socket_listener & socket_writer
 - [#2031](https://github.com/influxdata/telegraf/pull/2031): Add Kapacitor input plugin
+- [#2732](https://github.com/influxdata/telegraf/pull/2732): Use go 1.8.1
+- [#2712](https://github.com/influxdata/telegraf/issues/2712): Documentation for rabbitmq input plugin
 
 ### Bugfixes
 
@@ -118,6 +120,7 @@ be deprecated eventually.
 - [#1911](https://github.com/influxdata/telegraf/issues/1911): Sysstat plugin needs LANG=C or similar locale
 - [#2528](https://github.com/influxdata/telegraf/issues/2528): File output closes standard streams on reload.
 - [#2603](https://github.com/influxdata/telegraf/issues/2603): AMQP output disconnect blocks all outputs
+- [#2706](https://github.com/influxdata/telegraf/issues/2706): Improve documentation for redis input plugin
 
 ## v1.2.1 [2017-02-01]
 

README.md

@@ -111,6 +111,7 @@ configuration options.
 * [couchbase](./plugins/inputs/couchbase)
 * [couchdb](./plugins/inputs/couchdb)
 * [disque](./plugins/inputs/disque)
+* [dmcache](./plugins/inputs/dmcache)
 * [dns query time](./plugins/inputs/dns_query)
 * [docker](./plugins/inputs/docker)
 * [dovecot](./plugins/inputs/dovecot)
@@ -127,6 +128,7 @@ configuration options.
 * [ipmi_sensor](./plugins/inputs/ipmi_sensor)
 * [iptables](./plugins/inputs/iptables)
 * [jolokia](./plugins/inputs/jolokia)
+* [kapacitor](./plugins/inputs/kapacitor)
 * [kubernetes](./plugins/inputs/kubernetes)
 * [leofs](./plugins/inputs/leofs)
 * [lustre2](./plugins/inputs/lustre2)
@@ -195,6 +197,7 @@ Telegraf can also collect metrics via the following service plugins:
   * [github](./plugins/inputs/webhooks/github)
   * [mandrill](./plugins/inputs/webhooks/mandrill)
   * [rollbar](./plugins/inputs/webhooks/rollbar)
+  * [papertrail](./plugins/inputs/webhooks/papertrail)
 
 Telegraf is able to parse the following input data formats into metrics, these
 formats may be used with input plugins supporting the `data_format` option:

circle.yml

@@ -1,13 +1,11 @@
 machine:
+  go:
+    version: 1.8.1
   services:
     - docker
-  post:
-    - sudo service zookeeper stop
-    - go version
-    - sudo rm -rf /usr/local/go
-    - wget https://storage.googleapis.com/golang/go1.8.linux-amd64.tar.gz
-    - sudo tar -C /usr/local -xzf go1.8.linux-amd64.tar.gz
-    - go version
+    - memcached
+    - redis
+    - rabbitmq-server
 
 dependencies:
   override:

etc/telegraf.conf

@@ -95,7 +95,8 @@
   ## The target database for metrics (telegraf will create it if not exists).
   database = "telegraf" # required
 
-  ## Retention policy to write to. Empty string writes to the default rp.
+  ## Name of existing retention policy to write to.  Empty string writes to
+  ## the default retention policy.
   retention_policy = ""
   ## Write consistency (clusters only), can be: "any", "one", "quorum", "all"
   write_consistency = "any"
@@ -141,7 +142,7 @@
 #   ## described here: https://www.rabbitmq.com/plugins.html
 #   # auth_method = "PLAIN"
 #   ## Telegraf tag to use as a routing key
-#   ##  ie, if this tag exists, it's value will be used as the routing key
+#   ##  ie, if this tag exists, its value will be used as the routing key
 #   routing_tag = "host"
 #
 #   ## InfluxDB retention policy
@@ -335,6 +336,10 @@
 #   ## Use SSL but skip chain & host verification
 #   # insecure_skip_verify = false
 #
+#   ## Optional SASL Config
+#   # sasl_username = "kafka"
+#   # sasl_password = "secret"
+#
 #   ## Data format to output.
 #   ## Each data format has its own unique set of configuration options, read
 #   ## more about them here:
@@ -1325,6 +1330,18 @@
 #     attribute = "LoadedClassCount,UnloadedClassCount,TotalLoadedClassCount"
 
 
+# # Read Kapacitor-formatted JSON metrics from one or more HTTP endpoints
+# [[inputs.kapacitor]]
+#   ## Multiple URLs from which to read Kapacitor-formatted JSON
+#   ## Default is "http://localhost:9092/kapacitor/v1/debug/vars".
+#   urls = [
+#     "http://localhost:9092/kapacitor/v1/debug/vars"
+#   ]
+#
+#   ## Time limit for http requests
+#   timeout = "5s"
+
+
 # # Get kernel statistics from /proc/vmstat
 # [[inputs.kernel_vmstat]]
 #   # no configuration

plugins/inputs/logparser/grok/grok.go

@@ -118,11 +118,18 @@ func (p *Parser) Compile() error {
 
 	// Give Patterns fake names so that they can be treated as named
 	// "custom patterns"
-	p.namedPatterns = make([]string, len(p.Patterns))
+	p.namedPatterns = make([]string, 0, len(p.Patterns))
 	for i, pattern := range p.Patterns {
+		if pattern == "" {
+			continue
+		}
 		name := fmt.Sprintf("GROK_INTERNAL_PATTERN_%d", i)
 		p.CustomPatterns += "\n" + name + " " + pattern + "\n"
-		p.namedPatterns[i] = "%{" + name + "}"
+		p.namedPatterns = append(p.namedPatterns, "%{"+name+"}")
+	}
+
+	if len(p.namedPatterns) == 0 {
+		return fmt.Errorf("pattern required")
 	}
 
 	// Combine user-supplied CustomPatterns with DEFAULT_PATTERNS and parse

plugins/inputs/logparser/logparser.go

@@ -117,16 +117,11 @@ func (l *LogParserPlugin) Start(acc telegraf.Accumulator) error {
 	}
 
 	// compile log parser patterns:
-	var haveError bool
 	for _, parser := range l.parsers {
 		if err := parser.Compile(); err != nil {
-			acc.AddError(err)
-			haveError = true
+			return err
 		}
 	}
-	if haveError {
-		return nil
-	}
 
 	l.wg.Add(1)
 	go l.parser()

plugins/inputs/logparser/logparser_test.go

@@ -38,12 +38,8 @@ func TestGrokParseLogFilesNonExistPattern(t *testing.T) {
 	}
 
 	acc := testutil.Accumulator{}
-	logparser.Start(&acc)
-	if assert.NotEmpty(t, acc.Errors) {
-		assert.Error(t, acc.Errors[0])
-	}
-
-	logparser.Stop()
+	err := logparser.Start(&acc)
+	assert.Error(t, err)
 }
 
 func TestGrokParseLogFiles(t *testing.T) {

plugins/inputs/rabbitmq/README.md

@@ -0,0 +1,121 @@
+# RabbitMQ Input Plugin
+
+Reads metrics from RabbitMQ servers via the [Management Plugin](https://www.rabbitmq.com/management.html).
+
+For additional details reference the [RabbitMQ Management HTTP Stats](https://cdn.rawgit.com/rabbitmq/rabbitmq-management/master/priv/www/doc/stats.html).
+
+### Configuration:
+
+```toml
+[[inputs.rabbitmq]]
+  ## Management Plugin url. (default: http://localhost:15672)
+  # url = "http://localhost:15672"
+  ## Tag added to rabbitmq_overview series; deprecated: use tags
+  # name = "rmq-server-1"
+  ## Credentials
+  # username = "guest"
+  # password = "guest"
+
+  ## Optional SSL Config
+  # ssl_ca = "/etc/telegraf/ca.pem"
+  # ssl_cert = "/etc/telegraf/cert.pem"
+  # ssl_key = "/etc/telegraf/key.pem"
+  ## Use SSL but skip chain & host verification
+  # insecure_skip_verify = false
+
+  ## Optional request timeouts
+  ##
+  ## ResponseHeaderTimeout, if non-zero, specifies the amount of time to wait
+  ## for a server's response headers after fully writing the request.
+  # header_timeout = "3s"
+  ##
+  ## client_timeout specifies a time limit for requests made by this client.
+  ## Includes connection time, any redirects, and reading the response body.
+  # client_timeout = "4s"
+
+  ## A list of nodes to pull metrics about. If not specified, metrics for
+  ## all nodes are gathered.
+  # nodes = ["rabbit@node1", "rabbit@node2"]
+```
+
+### Measurements & Fields:
+
+- rabbitmq_overview
+  - channels (int, channels)
+  - connections (int, connections)
+  - consumers (int, consumers)
+  - exchanges (int, exchanges)
+  - messages (int, messages)
+  - messages_acked (int, messages)
+  - messages_delivered (int, messages)
+  - messages_published (int, messages)
+  - messages_ready (int, messages)
+  - messages_unacked (int, messages)
+  - queues (int, queues)
+
+- rabbitmq_node
+  - disk_free (int, bytes)
+  - disk_free_limit (int, bytes)
+  - fd_total (int, file descriptors)
+  - fd_used (int, file descriptors)
+  - mem_limit (int, bytes)
+  - mem_used (int, bytes)
+  - proc_total (int, erlang processes)
+  - proc_used (int, erlang processes)
+  - run_queue (int, erlang processes)
+  - sockets_total (int, sockets)
+  - sockets_used (int, sockets)
+
+- rabbitmq_queue
+  - consumer_utilisation (float, percent)
+  - consumers (int, int)
+  - idle_since (string, time - e.g., "2006-01-02 15:04:05")
+  - memory (int, bytes)
+  - message_bytes (int, bytes)
+  - message_bytes_persist (int, bytes)
+  - message_bytes_ram (int, bytes)
+  - message_bytes_ready (int, bytes)
+  - message_bytes_unacked (int, bytes)
+  - messages (int, count)
+  - messages_ack (int, count)
+  - messages_ack_rate (float, messages per second)
+  - messages_deliver (int, count)
+  - messages_deliver_rate (float, messages per second)
+  - messages_deliver_get (int, count)
+  - messages_deliver_get_rate (float, messages per second)
+  - messages_publish (int, count)
+  - messages_publish_rate (float, messages per second)
+  - messages_ready (int, count)
+  - messages_redeliver (int, count)
+  - messages_redeliver_rate (float, messages per second)
+  - messages_unack (integer, count)
+
+### Tags:
+
+- All measurements have the following tags:
+  - url
+
+- rabbitmq_overview
+  - name
+
+- rabbitmq_node
+  - node
+
+- rabbitmq_queue
+  - url
+  - queue
+  - vhost
+  - node
+  - durable
+  - auto_delete
+
+### Sample Queries:
+
+
+### Example Output:
+
+```
+rabbitmq_queue,url=http://amqp.example.org:15672,queue=telegraf,vhost=influxdb,node=rabbit@amqp.example.org,durable=true,auto_delete=false,host=amqp.example.org messages_deliver_get=0i,messages_publish=329i,messages_publish_rate=0.2,messages_redeliver_rate=0,message_bytes_ready=0i,message_bytes_unacked=0i,messages_deliver=329i,messages_unack=0i,consumers=1i,idle_since="",messages=0i,messages_deliver_rate=0.2,messages_deliver_get_rate=0.2,messages_redeliver=0i,memory=43032i,message_bytes_ram=0i,messages_ack=329i,messages_ready=0i,messages_ack_rate=0.2,consumer_utilisation=1,message_bytes=0i,message_bytes_persist=0i 1493684035000000000
+rabbitmq_overview,url=http://amqp.example.org:15672,host=amqp.example.org channels=2i,consumers=1i,exchanges=17i,messages_acked=329i,messages=0i,messages_ready=0i,messages_unacked=0i,connections=2i,queues=1i,messages_delivered=329i,messages_published=329i 1493684035000000000
+rabbitmq_node,url=http://amqp.example.org:15672,node=rabbit@amqp.example.org,host=amqp.example.org fd_total=1024i,fd_used=32i,mem_limit=8363329126i,sockets_total=829i,disk_free=8175935488i,disk_free_limit=50000000i,mem_used=58771080i,proc_total=1048576i,proc_used=267i,run_queue=0i,sockets_used=2i 149368403500000000
+```

plugins/inputs/rabbitmq/rabbitmq.go

@@ -140,8 +140,11 @@ type gatherFunc func(r *RabbitMQ, acc telegraf.Accumulator)
 var gatherFunctions = []gatherFunc{gatherOverview, gatherNodes, gatherQueues}
 
 var sampleConfig = `
+  ## Management Plugin url. (default: http://localhost:15672)
   # url = "http://localhost:15672"
-  # name = "rmq-server-1" # optional tag
+  ## Tag added to rabbitmq_overview series; deprecated: use tags
+  # name = "rmq-server-1"
+  ## Credentials
   # username = "guest"
   # password = "guest"
 
@@ -174,7 +177,7 @@ func (r *RabbitMQ) SampleConfig() string {
 
 // Description ...
 func (r *RabbitMQ) Description() string {
-	return "Read metrics from one or many RabbitMQ servers via the management API"
+	return "Reads metrics from RabbitMQ servers via the Management Plugin"
 }
 
 // Gather ...

plugins/inputs/redis/README.md

@@ -18,47 +18,103 @@
 
 ### Measurements & Fields:
 
-- Measurement
-    - uptime_in_seconds
-    - connected_clients
-    - used_memory
-    - used_memory_rss
-    - used_memory_peak
-    - used_memory_lua
-    - rdb_changes_since_last_save
-    - total_connections_received
-    - total_commands_processed
-    - instantaneous_ops_per_sec
-    - instantaneous_input_kbps
-    - instantaneous_output_kbps
-    - sync_full
-    - sync_partial_ok
-    - sync_partial_err
-    - expired_keys
-    - evicted_keys
-    - keyspace_hits
-    - keyspace_misses
-    - pubsub_channels
-    - pubsub_patterns
-    - latest_fork_usec
-    - connected_slaves
-    - master_repl_offset
-    - master_last_io_seconds_ago
-    - repl_backlog_active
-    - repl_backlog_size
-    - repl_backlog_histlen
-    - mem_fragmentation_ratio
-    - used_cpu_sys
-    - used_cpu_user
-    - used_cpu_sys_children
-    - used_cpu_user_children
+The plugin gathers the results of the [INFO](https://redis.io/commands/info) redis command.
+There are two separate measurements: _redis_ and _redis\_keyspace_, the latter is used for gathering database related statistics.
+
+Additionally the plugin also calculates the hit/miss ratio (keyspace\_hitrate) and the elapsed time since the last rdb save (rdb\_last\_save\_time\_elapsed).
+
+- redis
+    - keyspace_hitrate(float, number)
+    - rdb_last_save_time_elapsed(int, seconds)
+
+    **Server**
+    - uptime(int, seconds)
+    - lru_clock(int, number)
+
+    **Clients**
+    - clients(int, number)
+    - client_longest_output_list(int, number)
+    - client_biggest_input_buf(int, number)
+    - blocked_clients(int, number)
+
+    **Memory**
+    - used_memory(int, bytes)
+    - used_memory_rss(int, bytes)
+    - used_memory_peak(int, bytes)
+    - total_system_memory(int, bytes)
+    - used_memory_lua(int, bytes)
+    - maxmemory(int, bytes)
+    - maxmemory_policy(string)
+    - mem_fragmentation_ratio(float, number)
+
+    **Persistance**
+    - loading(int,flag)
+    - rdb_changes_since_last_save(int, number)
+    - rdb_bgsave_in_progress(int, flag)
+    - rdb_last_save_time(int, seconds)
+    - rdb_last_bgsave_status(string)
+    - rdb_last_bgsave_time_sec(int, seconds)
+    - rdb_current_bgsave_time_sec(int, seconds)
+    - aof_enabled(int, flag)
+    - aof_rewrite_in_progress(int, flag)
+    - aof_rewrite_scheduled(int, flag)
+    - aof_last_rewrite_time_sec(int, seconds)
+    - aof_current_rewrite_time_sec(int, seconds)
+    - aof_last_bgrewrite_status(string)
+    - aof_last_write_status(string)
+
+    **Stats**
+    - total_connections_received(int, number)
+    - total_commands_processed(int, number)
+    - instantaneous_ops_per_sec(int, number)
+    - total_net_input_bytes(int, bytes)
+    - total_net_output_bytes(int, bytes)
+    - instantaneous_input_kbps(float, bytes)
+    - instantaneous_output_kbps(float, bytes)
+    - rejected_connections(int, number)
+    - sync_full(int, number)
+    - sync_partial_ok(int, number)
+    - sync_partial_err(int, number)
+    - expired_keys(int, number)
+    - evicted_keys(int, number)
+    - keyspace_hits(int, number)
+    - keyspace_misses(int, number)
+    - pubsub_channels(int, number)
+    - pubsub_patterns(int, number)
+    - latest_fork_usec(int, microseconds)
+    - migrate_cached_sockets(int, number)
+
+    **Replication**
+    - connected_slaves(int, number)
+    - master_repl_offset(int, number)
+    - repl_backlog_active(int, number)
+    - repl_backlog_size(int, bytes)
+    - repl_backlog_first_byte_offset(int, number)
+    - repl_backlog_histlen(int, bytes)
+
+    **CPU**
+    - used_cpu_sys(float, number)
+    - used_cpu_user(float, number)
+    - used_cpu_sys_children(float, number)
+    - used_cpu_user_children(float, number)
+
+    **Cluster**
+    - cluster_enabled(int, flag)
+
+- redis_keyspace
+    - keys(int, number)
+    - expires(int, number)
+    - avg_ttl(int, number)
 
 ### Tags:
 
 - All measurements have the following tags:
     - port
     - server
-    - replication role
+    - replication_role
+
+- The redis_keyspace measurement has an additional database tag:
+    - database
 
 ### Example Output:
 
@@ -84,5 +140,10 @@ When run with:
 It produces:
 ```
 * Plugin: redis, Collection 1
-> redis,port=6379,server=localhost clients=1i,connected_slaves=0i,evicted_keys=0i,expired_keys=0i,instantaneous_ops_per_sec=0i,keyspace_hitrate=0,keyspace_hits=0i,keyspace_misses=2i,latest_fork_usec=0i,master_repl_offset=0i,mem_fragmentation_ratio=3.58,pubsub_channels=0i,pubsub_patterns=0i,rdb_changes_since_last_save=0i,repl_backlog_active=0i,repl_backlog_histlen=0i,repl_backlog_size=1048576i,sync_full=0i,sync_partial_err=0i,sync_partial_ok=0i,total_commands_processed=4i,total_connections_received=2i,uptime=869i,used_cpu_sys=0.07,used_cpu_sys_children=0,used_cpu_user=0.1,used_cpu_user_children=0,used_memory=502048i,used_memory_lua=33792i,used_memory_peak=501128i,used_memory_rss=1798144i 1457052084987848383
+> redis,server=localhost,port=6379,replication_role=master,host=host keyspace_hitrate=1,clients=2i,blocked_clients=0i,instantaneous_input_kbps=0,sync_full=0i,pubsub_channels=0i,pubsub_patterns=0i,total_net_output_bytes=6659253i,used_memory=842448i,total_system_memory=8351916032i,aof_current_rewrite_time_sec=-1i,rdb_changes_since_last_save=0i,sync_partial_err=0i,latest_fork_usec=508i,instantaneous_output_kbps=0,expired_keys=0i,used_memory_peak=843416i,aof_rewrite_in_progress=0i,aof_last_bgrewrite_status="ok",migrate_cached_sockets=0i,connected_slaves=0i,maxmemory_policy="noeviction",aof_rewrite_scheduled=0i,total_net_input_bytes=3125i,used_memory_rss=9564160i,repl_backlog_histlen=0i,rdb_last_bgsave_status="ok",aof_last_rewrite_time_sec=-1i,keyspace_misses=0i,client_biggest_input_buf=5i,used_cpu_user=1.33,maxmemory=0i,rdb_current_bgsave_time_sec=-1i,total_commands_processed=271i,repl_backlog_size=1048576i,used_cpu_sys=3,uptime=2822i,lru_clock=16706281i,used_memory_lua=37888i,rejected_connections=0i,sync_partial_ok=0i,evicted_keys=0i,rdb_last_save_time_elapsed=1922i,rdb_last_save_time=1493099368i,instantaneous_ops_per_sec=0i,used_cpu_user_children=0,client_longest_output_list=0i,master_repl_offset=0i,repl_backlog_active=0i,keyspace_hits=2i,used_cpu_sys_children=0,cluster_enabled=0i,rdb_last_bgsave_time_sec=0i,aof_last_write_status="ok",total_connections_received=263i,aof_enabled=0i,repl_backlog_first_byte_offset=0i,mem_fragmentation_ratio=11.35,loading=0i,rdb_bgsave_in_progress=0i 1493101290000000000
+```
+
+redis_keyspace:
+```
+> redis_keyspace,database=db1,host=host,server=localhost,port=6379,replication_role=master keys=1i,expires=0i,avg_ttl=0i 1493101350000000000
 ```

plugins/outputs/influxdb/README.md

@@ -18,7 +18,8 @@ This plugin writes to [InfluxDB](https://www.influxdb.com) via HTTP or UDP.
   ## The target database for metrics (telegraf will create it if not exists).
   database = "telegraf" # required
 
-  ## Retention policy to write to. Empty string writes to the default rp.
+  ## Name of existing retention policy to write to.  Empty string writes to
+  ## the default retention policy.
   retention_policy = ""
   ## Write consistency (clusters only), can be: "any", "one", "quorum", "all"
   write_consistency = "any"
@@ -52,7 +53,7 @@ to write to. Each URL should start with either `http://` or `udp://`
 ### Optional parameters:
 
 * `write_consistency`: Write consistency (clusters only), can be: "any", "one", "quorum", "all".
-* `retention_policy`:  Retention policy to write to.
+* `retention_policy`:  Name of existing retention policy to write to.  Empty string writes to the default retention policy.
 * `timeout`: Write timeout (for the InfluxDB client), formatted as a string. If not provided, will default to 5s. 0s means no timeout (not recommended).
 * `username`: Username for influxdb
 * `password`: Password for influxdb

plugins/outputs/influxdb/client/udp.go

@@ -25,6 +25,7 @@ type UDPConfig struct {
 	PayloadSize int
 }
 
+// NewUDP will return an instance of the telegraf UDP output plugin for influxdb
 func NewUDP(config UDPConfig) (Client, error) {
 	p, err := url.Parse(config.URL)
 	if err != nil {
@@ -55,20 +56,22 @@ type udpClient struct {
 	buffer []byte
 }
 
+// Query will send the provided query command to the client, returning an error if any issues arise
 func (c *udpClient) Query(command string) error {
 	return nil
 }
 
+// Write will send the byte stream to the given UDP client endpoint
 func (c *udpClient) Write(b []byte) (int, error) {
 	return c.WriteStream(bytes.NewReader(b), -1)
 }
 
-// write params are ignored by the UDP client
+// WriteWithParams are ignored by the UDP client, will forward to WriteStream
 func (c *udpClient) WriteWithParams(b []byte, wp WriteParams) (int, error) {
 	return c.WriteStream(bytes.NewReader(b), -1)
 }
 
-// contentLength is ignored by the UDP client.
+// WriteStream will send the provided data through to the client, contentLength is ignored by the UDP client
 func (c *udpClient) WriteStream(r io.Reader, contentLength int) (int, error) {
 	var totaln int
 	for {
@@ -88,12 +91,13 @@ func (c *udpClient) WriteStream(r io.Reader, contentLength int) (int, error) {
 	return totaln, nil
 }
 
-// contentLength is ignored by the UDP client.
+// WriteStreamWithParams will forward the stream to the client backend, contentLength is ignored by the UDP client
 // write params are ignored by the UDP client
 func (c *udpClient) WriteStreamWithParams(r io.Reader, contentLength int, wp WriteParams) (int, error) {
 	return c.WriteStream(r, -1)
 }
 
+// Close will terminate the provided client connection
 func (c *udpClient) Close() error {
 	return c.conn.Close()
 }

plugins/outputs/influxdb/influxdb.go

@@ -2,6 +2,7 @@ package influxdb
 
 import (
 	"fmt"
+	"io"
 	"log"
 	"math/rand"
 	"strings"
@@ -15,6 +16,7 @@ import (
 	"github.com/influxdata/telegraf/plugins/outputs/influxdb/client"
 )
 
+// InfluxDB struct is the primary data structure for the plugin
 type InfluxDB struct {
 	// URL is only for backwards compatability
 	URL              string
@@ -40,7 +42,8 @@ type InfluxDB struct {
 	// Precision is only here for legacy support. It will be ignored.
 	Precision string
 
-	clients []client.Client
+	clients      []client.Client
+	splitPayload bool
 }
 
 var sampleConfig = `
@@ -55,7 +58,8 @@ var sampleConfig = `
   ## The target database for metrics (telegraf will create it if not exists).
   database = "telegraf" # required
 
-  ## Retention policy to write to. Empty string writes to the default rp.
+  ## Name of existing retention policy to write to.  Empty string writes to
+  ## the default retention policy.
   retention_policy = ""
   ## Write consistency (clusters only), can be: "any", "one", "quorum", "all"
   write_consistency = "any"
@@ -78,11 +82,10 @@ var sampleConfig = `
   # insecure_skip_verify = false
 `
 
+// Connect initiates the primary connection to the range of provided URLs
 func (i *InfluxDB) Connect() error {
 	var urls []string
-	for _, u := range i.URLs {
-		urls = append(urls, u)
-	}
+	urls = append(urls, i.URLs...)
 
 	// Backward-compatability with single Influx URL config files
 	// This could eventually be removed in favor of specifying the urls as a list
@@ -108,6 +111,7 @@ func (i *InfluxDB) Connect() error {
 				return fmt.Errorf("Error creating UDP Client [%s]: %s", u, err)
 			}
 			i.clients = append(i.clients, c)
+			i.splitPayload = true
 		default:
 			// If URL doesn't start with "udp", assume HTTP client
 			config := client.HTTPConfig{
@@ -131,7 +135,9 @@ func (i *InfluxDB) Connect() error {
 
 			err = c.Query("CREATE DATABASE " + i.Database)
 			if err != nil {
-				log.Println("E! Database creation failed: " + err.Error())
+				if !strings.Contains(err.Error(), "Status Code [403]") {
+					log.Println("I! Database creation failed: " + err.Error())
+				}
 				continue
 			}
 		}
@@ -141,26 +147,41 @@ func (i *InfluxDB) Connect() error {
 	return nil
 }
 
+// Close will terminate the session to the backend, returning error if an issue arises
 func (i *InfluxDB) Close() error {
 	return nil
 }
 
+// SampleConfig returns the formatted sample configuration for the plugin
 func (i *InfluxDB) SampleConfig() string {
 	return sampleConfig
 }
 
+// Description returns the human-readable function definition of the plugin
 func (i *InfluxDB) Description() string {
 	return "Configuration for influxdb server to send metrics to"
 }
 
-// Choose a random server in the cluster to write to until a successful write
+func (i *InfluxDB) getReader(metrics []telegraf.Metric) io.Reader {
+	if !i.splitPayload {
+		return metric.NewReader(metrics)
+	}
+
+	splitData := make([]telegraf.Metric, 0)
+	for _, m := range metrics {
+		splitData = append(splitData, m.Split(i.UDPPayload)...)
+	}
+	return metric.NewReader(splitData)
+}
+
+// Write will choose a random server in the cluster to write to until a successful write
 // occurs, logging each unsuccessful. If all servers fail, return error.
 func (i *InfluxDB) Write(metrics []telegraf.Metric) error {
 	bufsize := 0
 	for _, m := range metrics {
 		bufsize += m.Len()
 	}
-	r := metric.NewReader(metrics)
+	r := i.getReader(metrics)
 
 	// This will get set to nil if a successful write occurs
 	err := fmt.Errorf("Could not write to any InfluxDB server in cluster")

plugins/outputs/socket_writer/socket_writer.go

@@ -124,6 +124,16 @@ func (sw *SocketWriter) Write(metrics []telegraf.Metric) error {
 	return nil
 }
 
+// Close closes the connection. Noop if already closed.
+func (sw *SocketWriter) Close() error {
+	if sw.Conn == nil {
+		return nil
+	}
+	err := sw.Conn.Close()
+	sw.Conn = nil
+	return err
+}
+
 func newSocketWriter() *SocketWriter {
 	s, _ := serializers.NewInfluxSerializer()
 	return &SocketWriter{

plugins/outputs/socket_writer/socket_writer_test.go

@@ -143,7 +143,7 @@ func TestSocketWriter_Write_err(t *testing.T) {
 
 	// close the socket to generate an error
 	lconn.Close()
-	sw.Close()
+	sw.Conn.Close()
 	err = sw.Write(metrics)
 	require.Error(t, err)
 	assert.Nil(t, sw.Conn)

scripts/build.py

@@ -636,6 +636,10 @@ def package(build_output, pkg_name, version, nightly=False, iteration=1, static=
                     elif package_type not in ['zip', 'tar'] and static or "static_" in arch:
                         logging.info("Skipping package type '{}' for static builds.".format(package_type))
                     else:
+                        if package_type == 'rpm' and release and '~' in package_version:
+                            package_version, suffix = package_version.split('~', 1)
+                            # The ~ indicatees that this is a prerelease so we give it a leading 0.
+                            package_iteration = "0.%s" % suffix
                         fpm_command = "fpm {} --name {} -a {} -t {} --version {} --iteration {} -C {} -p {} ".format(
                             fpm_common_args,
                             name,
@@ -664,9 +668,6 @@ def package(build_output, pkg_name, version, nightly=False, iteration=1, static=
                                 if package_type == 'rpm':
                                     # rpm's convert any dashes to underscores
                                     package_version = package_version.replace("-", "_")
-                                new_outfile = outfile.replace("{}-{}".format(package_version, package_iteration), package_version)
-                                os.rename(outfile, new_outfile)
-                                outfile = new_outfile
                             outfiles.append(os.path.join(os.getcwd(), outfile))
         logging.debug("Produced package files: {}".format(outfiles))
         return outfiles

scripts/init.sh

@@ -135,7 +135,9 @@ case $1 in
         fi
 
         log_success_msg "Starting the process" "$name"
-        if which start-stop-daemon > /dev/null 2>&1; then
+        if command -v startproc >/dev/null; then
+            startproc -u "$USER" -g "$GROUP" -p "$pidfile" -q -- "$daemon" -pidfile "$pidfile" -config "$config" -config-directory "$confdir" $TELEGRAF_OPTS
+        elif which start-stop-daemon > /dev/null 2>&1; then
             start-stop-daemon --chuid $USER:$GROUP --start --quiet --pidfile $pidfile --exec $daemon -- -pidfile $pidfile -config $config -config-directory $confdir $TELEGRAF_OPTS >>$STDOUT 2>>$STDERR &
         else
             su -s /bin/sh -c "nohup $daemon -pidfile $pidfile -config $config -config-directory $confdir $TELEGRAF_OPTS >>$STDOUT 2>>$STDERR &" $USER

scripts/post-install.sh

@@ -11,7 +11,7 @@ function install_init {
 }
 
 function install_systemd {
-    cp -f $SCRIPT_DIR/telegraf.service /lib/systemd/system/telegraf.service
+    cp -f $SCRIPT_DIR/telegraf.service $1
     systemctl enable telegraf || true
     systemctl daemon-reload || true
 }
@@ -24,12 +24,12 @@ function install_chkconfig {
     chkconfig --add telegraf
 }
 
+if ! grep "^telegraf:" /etc/group &>/dev/null; then
+    groupadd -r telegraf
+fi
+
 if ! id telegraf &>/dev/null; then
-    if ! grep "^telegraf:" /etc/group &>/dev/null; then
-        useradd -r -K USERGROUPS_ENAB=yes -M telegraf -s /bin/false -d /etc/telegraf
-    else
-        useradd -r -K USERGROUPS_ENAB=yes -M telegraf -s /bin/false -d /etc/telegraf -g telegraf
-    fi
+    useradd -r -M telegraf -s /bin/false -d /etc/telegraf -g telegraf
 fi
 
 test -d $LOG_DIR || mkdir -p $LOG_DIR
@@ -56,10 +56,10 @@ if [[ ! -d /etc/telegraf/telegraf.d ]]; then
 fi
 
 # Distribution-specific logic
-if [[ -f /etc/redhat-release ]]; then
+if [[ -f /etc/redhat-release ]] || [[ -f /etc/SuSE-release ]]; then
     # RHEL-variant logic
     if [[ "$(readlink /proc/1/exe)" == */systemd ]]; then
-        install_systemd
+        install_systemd /usr/lib/systemd/system/telegraf.service
     else
         # Assuming SysVinit
         install_init
@@ -73,10 +73,10 @@ if [[ -f /etc/redhat-release ]]; then
 elif [[ -f /etc/debian_version ]]; then
     # Debian/Ubuntu logic
     if [[ "$(readlink /proc/1/exe)" == */systemd ]]; then
-        install_systemd
+        install_systemd /lib/systemd/system/telegraf.service
         systemctl restart telegraf || echo "WARNING: systemd not running."
     else
-	    # Assuming SysVinit
+        # Assuming SysVinit
         install_init
         # Run update-rc.d or fallback to chkconfig if not available
         if which update-rc.d &>/dev/null; then
@@ -89,7 +89,7 @@ elif [[ -f /etc/debian_version ]]; then
 elif [[ -f /etc/os-release ]]; then
     source /etc/os-release
     if [[ $ID = "amzn" ]]; then
-	    # Amazon Linux logic
+        # Amazon Linux logic
         install_init
         # Run update-rc.d or fallback to chkconfig if not available
         if which update-rc.d &>/dev/null; then
@@ -97,5 +97,6 @@ elif [[ -f /etc/os-release ]]; then
         else
             install_chkconfig
         fi
+        /etc/init.d/telegraf restart
     fi
 fi

scripts/post-remove.sh

@@ -2,7 +2,7 @@
 
 function disable_systemd {
     systemctl disable telegraf
-    rm -f /lib/systemd/system/telegraf.service
+    rm -f $1
 }
 
 function disable_update_rcd {
@@ -15,14 +15,14 @@ function disable_chkconfig {
     rm -f /etc/init.d/telegraf
 }
 
-if [[ -f /etc/redhat-release ]]; then
+if [[ -f /etc/redhat-release ]] || [[ -f /etc/SuSE-release ]]; then
     # RHEL-variant logic
     if [[ "$1" = "0" ]]; then
         # InfluxDB is no longer installed, remove from init system
         rm -f /etc/default/telegraf
 
         if [[ "$(readlink /proc/1/exe)" == */systemd ]]; then
-            disable_systemd
+            disable_systemd /usr/lib/systemd/system/telegraf.service
         else
             # Assuming sysv
             disable_chkconfig
@@ -35,7 +35,7 @@ elif [[ -f /etc/debian_version ]]; then
         rm -f /etc/default/telegraf
 
         if [[ "$(readlink /proc/1/exe)" == */systemd ]]; then
-            disable_systemd
+            disable_systemd /lib/systemd/system/telegraf.service
         else
             # Assuming sysv
             # Run update-rc.d or fallback to chkconfig if not available