telegraf/plugins/inputs/influxdb/README.md

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Add influxdb plugin This was primarily intended to consume InfluxDB-style expvars, particularly InfluxDB's `/debug/vars` endpoint. That endpoint follows a structure like ```json { "httpd::8086": { "name": "httpd", "tags": { "bind": ":8086" }, "values": { "pointsWrittenOK": 33756, "queryReq": 19, "queryRespBytes": 26973, "req": 428, "writeReq": 205, "writeReqBytes": 3939161 } } } ``` There are an arbitrary number of top-level keys in the JSON response at the configured URLs, and this plugin will iterate through all of their values looking for objects with keys "name", "tags", and "values" indicating a metric to be consumed by telegraf. Running this on current master of InfluxDB, I am able to record nearly the same information that is normally stored in the `_internal` database; the only measurement missing from `_internal` is `runtime`, which is present under the "memstats" key but does not follow the format and so is not consumed in this plugin. ``` $ influx -database=telegraf -execute 'SHOW FIELD KEYS FROM /influxdb/' name: influxdb_influxdb_engine ---------------------------- fieldKey blksWrite blksWriteBytes blksWriteBytesC pointsWrite pointsWriteDedupe name: influxdb_influxdb_httpd --------------------------- fieldKey pingReq pointsWrittenOK queryReq queryRespBytes req writeReq writeReqBytes name: influxdb_influxdb_shard --------------------------- fieldKey fieldsCreate seriesCreate writePointsOk writeReq name: influxdb_influxdb_subscriber -------------------------------- fieldKey pointsWritten name: influxdb_influxdb_wal ------------------------- fieldKey autoFlush flushDuration idleFlush memSize metaFlush pointsFlush pointsWrite pointsWriteReq seriesFlush name: influxdb_influxdb_write --------------------------- fieldKey pointReq pointReqLocal req subWriteOk writeOk ```
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# influxdb plugin
The InfluxDB plugin will collect metrics on the given InfluxDB servers.
This plugin can also gather metrics from endpoints that expose
InfluxDB-formatted endpoints. See below for more information.
### Configuration:
```toml
# Read InfluxDB-formatted JSON metrics from one or more HTTP endpoints
[[inputs.influxdb]]
## Works with InfluxDB debug endpoints out of the box,
## but other services can use this format too.
## See the influxdb plugin's README for more details.
## Multiple URLs from which to read InfluxDB-formatted JSON
## Default is "http://localhost:8086/debug/vars".
urls = [
"http://localhost:8086/debug/vars"
]
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## Optional TLS Config
# tls_ca = "/etc/telegraf/ca.pem"
# tls_cert = "/etc/telegraf/cert.pem"
# tls_key = "/etc/telegraf/key.pem"
## Use TLS but skip chain & host verification
# insecure_skip_verify = false
## http request & header timeout
timeout = "5s"
```
### Measurements & Fields
**Note:** The measurements and fields are dynamically built from the InfluxDB source,
and may vary between versions.
- influxdb
- n_shards
- influxdb_database
- influxdb_httpd
- influxdb_measurement
- influxdb_memstats
- heap_inuse
- heap_released
- mspan_inuse
- total_alloc
- sys
- mallocs
- frees
- heap_idle
- pause_total_ns
- lookups
- heap_sys
- mcache_sys
- next_gc
- gcc_pu_fraction
- other_sys
- alloc
- stack_inuse
- stack_sys
- buck_hash_sys
- gc_sys
- num_gc
- heap_alloc
- heap_objects
- mspan_sys
- mcache_inuse
- last_gc
- influxdb_shard
- influxdb_subscriber
- influxdb_tsm1_cache
- influxdb_tsm1_wal
- influxdb_write
### Example Output:
```
telegraf --config ~/ws/telegraf.conf --input-filter influxdb --test
* Plugin: influxdb, Collection 1
> influxdb_database,database=_internal,host=tyrion,url=http://localhost:8086/debug/vars numMeasurements=10,numSeries=29 1463590500247354636
> influxdb_httpd,bind=:8086,host=tyrion,url=http://localhost:8086/debug/vars req=7,reqActive=1,reqDurationNs=14227734 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=database,url=http://localhost:8086/debug/vars numSeries=1 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=httpd,url=http://localhost:8086/debug/vars numSeries=1 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=measurement,url=http://localhost:8086/debug/vars numSeries=10 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=runtime,url=http://localhost:8086/debug/vars numSeries=1 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=shard,url=http://localhost:8086/debug/vars numSeries=4 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=subscriber,url=http://localhost:8086/debug/vars numSeries=1 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=tsm1_cache,url=http://localhost:8086/debug/vars numSeries=4 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=tsm1_filestore,url=http://localhost:8086/debug/vars numSeries=2 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=tsm1_wal,url=http://localhost:8086/debug/vars numSeries=4 1463590500247354636
> influxdb_measurement,database=_internal,host=tyrion,measurement=write,url=http://localhost:8086/debug/vars numSeries=1 1463590500247354636
> influxdb_memstats,host=tyrion,url=http://localhost:8086/debug/vars alloc=7642384i,buck_hash_sys=1463471i,frees=1169558i,gc_sys=653312i,gcc_pu_fraction=0.00003825652361068311,heap_alloc=7642384i,heap_idle=9912320i,heap_inuse=9125888i,heap_objects=48276i,heap_released=0i,heap_sys=19038208i,last_gc=1463590480877651621i,lookups=90i,mallocs=1217834i,mcache_inuse=4800i,mcache_sys=16384i,mspan_inuse=70920i,mspan_sys=81920i,next_gc=11679787i,num_gc=141i,other_sys=1244233i,pause_total_ns=24034027i,stack_inuse=884736i,stack_sys=884736i,sys=23382264i,total_alloc=679012200i 1463590500277918755
> influxdb_shard,database=_internal,engine=tsm1,host=tyrion,id=4,path=/Users/sparrc/.influxdb/data/_internal/monitor/4,retentionPolicy=monitor,url=http://localhost:8086/debug/vars fieldsCreate=65,seriesCreate=26,writePointsOk=7274,writeReq=280 1463590500247354636
> influxdb_subscriber,host=tyrion,url=http://localhost:8086/debug/vars pointsWritten=7274 1463590500247354636
> influxdb_tsm1_cache,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/data/_internal/monitor/1,retentionPolicy=monitor,url=http://localhost:8086/debug/vars WALCompactionTimeMs=0,cacheAgeMs=2809192,cachedBytes=0,diskBytes=0,memBytes=0,snapshotCount=0 1463590500247354636
> influxdb_tsm1_cache,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/data/_internal/monitor/2,retentionPolicy=monitor,url=http://localhost:8086/debug/vars WALCompactionTimeMs=0,cacheAgeMs=2809184,cachedBytes=0,diskBytes=0,memBytes=0,snapshotCount=0 1463590500247354636
> influxdb_tsm1_cache,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/data/_internal/monitor/3,retentionPolicy=monitor,url=http://localhost:8086/debug/vars WALCompactionTimeMs=0,cacheAgeMs=2809180,cachedBytes=0,diskBytes=0,memBytes=42368,snapshotCount=0 1463590500247354636
> influxdb_tsm1_cache,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/data/_internal/monitor/4,retentionPolicy=monitor,url=http://localhost:8086/debug/vars WALCompactionTimeMs=0,cacheAgeMs=2799155,cachedBytes=0,diskBytes=0,memBytes=331216,snapshotCount=0 1463590500247354636
> influxdb_tsm1_filestore,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/data/_internal/monitor/1,retentionPolicy=monitor,url=http://localhost:8086/debug/vars diskBytes=37892 1463590500247354636
> influxdb_tsm1_filestore,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/data/_internal/monitor/2,retentionPolicy=monitor,url=http://localhost:8086/debug/vars diskBytes=52907 1463590500247354636
> influxdb_tsm1_wal,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/wal/_internal/monitor/1,retentionPolicy=monitor,url=http://localhost:8086/debug/vars currentSegmentDiskBytes=0,oldSegmentsDiskBytes=0 1463590500247354636
> influxdb_tsm1_wal,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/wal/_internal/monitor/2,retentionPolicy=monitor,url=http://localhost:8086/debug/vars currentSegmentDiskBytes=0,oldSegmentsDiskBytes=0 1463590500247354636
> influxdb_tsm1_wal,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/wal/_internal/monitor/3,retentionPolicy=monitor,url=http://localhost:8086/debug/vars currentSegmentDiskBytes=0,oldSegmentsDiskBytes=65651 1463590500247354636
> influxdb_tsm1_wal,database=_internal,host=tyrion,path=/Users/sparrc/.influxdb/wal/_internal/monitor/4,retentionPolicy=monitor,url=http://localhost:8086/debug/vars currentSegmentDiskBytes=495687,oldSegmentsDiskBytes=0 1463590500247354636
> influxdb_write,host=tyrion,url=http://localhost:8086/debug/vars pointReq=7274,pointReqLocal=7274,req=280,subWriteOk=280,writeOk=280 1463590500247354636
> influxdb_shard,host=tyrion n_shards=4i 1463590500247354636
```
### InfluxDB-formatted endpoints
The influxdb plugin can collect InfluxDB-formatted data from JSON endpoints.
Whether associated with an Influx database or not.
Add influxdb plugin This was primarily intended to consume InfluxDB-style expvars, particularly InfluxDB's `/debug/vars` endpoint. That endpoint follows a structure like ```json { "httpd::8086": { "name": "httpd", "tags": { "bind": ":8086" }, "values": { "pointsWrittenOK": 33756, "queryReq": 19, "queryRespBytes": 26973, "req": 428, "writeReq": 205, "writeReqBytes": 3939161 } } } ``` There are an arbitrary number of top-level keys in the JSON response at the configured URLs, and this plugin will iterate through all of their values looking for objects with keys "name", "tags", and "values" indicating a metric to be consumed by telegraf. Running this on current master of InfluxDB, I am able to record nearly the same information that is normally stored in the `_internal` database; the only measurement missing from `_internal` is `runtime`, which is present under the "memstats" key but does not follow the format and so is not consumed in this plugin. ``` $ influx -database=telegraf -execute 'SHOW FIELD KEYS FROM /influxdb/' name: influxdb_influxdb_engine ---------------------------- fieldKey blksWrite blksWriteBytes blksWriteBytesC pointsWrite pointsWriteDedupe name: influxdb_influxdb_httpd --------------------------- fieldKey pingReq pointsWrittenOK queryReq queryRespBytes req writeReq writeReqBytes name: influxdb_influxdb_shard --------------------------- fieldKey fieldsCreate seriesCreate writePointsOk writeReq name: influxdb_influxdb_subscriber -------------------------------- fieldKey pointsWritten name: influxdb_influxdb_wal ------------------------- fieldKey autoFlush flushDuration idleFlush memSize metaFlush pointsFlush pointsWrite pointsWriteReq seriesFlush name: influxdb_influxdb_write --------------------------- fieldKey pointReq pointReqLocal req subWriteOk writeOk ```
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With a configuration of:
```toml
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[[inputs.influxdb]]
Add influxdb plugin This was primarily intended to consume InfluxDB-style expvars, particularly InfluxDB's `/debug/vars` endpoint. That endpoint follows a structure like ```json { "httpd::8086": { "name": "httpd", "tags": { "bind": ":8086" }, "values": { "pointsWrittenOK": 33756, "queryReq": 19, "queryRespBytes": 26973, "req": 428, "writeReq": 205, "writeReqBytes": 3939161 } } } ``` There are an arbitrary number of top-level keys in the JSON response at the configured URLs, and this plugin will iterate through all of their values looking for objects with keys "name", "tags", and "values" indicating a metric to be consumed by telegraf. Running this on current master of InfluxDB, I am able to record nearly the same information that is normally stored in the `_internal` database; the only measurement missing from `_internal` is `runtime`, which is present under the "memstats" key but does not follow the format and so is not consumed in this plugin. ``` $ influx -database=telegraf -execute 'SHOW FIELD KEYS FROM /influxdb/' name: influxdb_influxdb_engine ---------------------------- fieldKey blksWrite blksWriteBytes blksWriteBytesC pointsWrite pointsWriteDedupe name: influxdb_influxdb_httpd --------------------------- fieldKey pingReq pointsWrittenOK queryReq queryRespBytes req writeReq writeReqBytes name: influxdb_influxdb_shard --------------------------- fieldKey fieldsCreate seriesCreate writePointsOk writeReq name: influxdb_influxdb_subscriber -------------------------------- fieldKey pointsWritten name: influxdb_influxdb_wal ------------------------- fieldKey autoFlush flushDuration idleFlush memSize metaFlush pointsFlush pointsWrite pointsWriteReq seriesFlush name: influxdb_influxdb_write --------------------------- fieldKey pointReq pointReqLocal req subWriteOk writeOk ```
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urls = [
"http://127.0.0.1:8086/debug/vars",
"http://192.168.2.1:8086/debug/vars"
]
```