Telegraf can't write to InfluxDB with default install

1

I’m trying to set up a default install of Telegraf to help monitor the health/performance of my influxdb server. Running the official RHEL rpm from Influx and RHEL7.3.

When I try to start up Telegraf I get:

● telegraf.service - The plugin-driven server agent for reporting metrics into InfluxDB
Loaded: loaded (/usr/lib/systemd/system/telegraf.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2017-05-31 15:55:47 GMT; 41s ago
Docs: GitHub - influxdata/telegraf: The plugin-driven server agent for collecting & reporting metrics.
Main PID: 1295 (telegraf)
CGroup: /system.slice/telegraf.service
└─1295 /usr/bin/telegraf -config /etc/telegraf/telegraf.conf -config-directory /etc/telegraf/telegraf.d

May 31 15:55:47 cfc-000-dev telegraf[1295]: 2017-05-31T15:55:47Z I! Loaded outputs: influxdb
May 31 15:55:47 cfc-000-dev telegraf[1295]: 2017-05-31T15:55:47Z I! Loaded inputs: inputs.processes inputs.swap inputs.system inputs.cpu inputs.disk inputs.diskio inputs.kernel inputs.mem
May 31 15:55:47 cfc-000-dev telegraf[1295]: 2017-05-31T15:55:47Z I! Tags enabled: host=cfc-000-dev
May 31 15:55:47 cfc-000-dev telegraf[1295]: 2017-05-31T15:55:47Z I! Agent Config: Interval:10s, Quiet:false, Hostname:“cfc-000-dev”, Flush Interval:10s
May 31 15:56:00 cfc-000-dev telegraf[1295]: 2017-05-31T15:56:00Z E! InfluxDB Output Error: Post http://localhost:8086/write?consistency=any&db=telegraf: dial tcp 127.0.0.1:8086: getsockopt: connection refused
May 31 15:56:00 cfc-000-dev telegraf[1295]: 2017-05-31T15:56:00Z E! Error writing to output [influxdb]: Could not write to any InfluxDB server in cluster

I also manually created the DB “telegraf” but no luck either.

2

Is influxdb running on the same machine as the telegraf process? InfluxDB may be configured listen on an explicit IP, not localhost. See this superuser discussion for a related explanation.

3

yes, influxdb is on the same host. I would like influx to be able to listen to localhost as well as on the IP address of the interface. Will look at your link. Thanks.

4

@sgreszcz You can always add an entry to your /etc/hosts file to make that happen too…

5

Does anyone have any concrete examples? I’ve tried this in the config file, but I still can’t get it working on local host:

[admin]

Determines whether the admin service is enabled.

enabled = true

The default bind address used by the admin service.

bind-address = “:8083”

Whether the admin service should use HTTPS.

https-enabled = false

The SSL certificate used when HTTPS is enabled.

https-certificate = “/etc/ssl/influxdb.pem”

[http]

Controls how the HTTP endpoints are configured. These are the primary

mechanism for getting data into and out of InfluxDB.

[http]

Determines whether HTTP endpoint is enabled.

enabled = true

The bind address used by the HTTP service.

bind-address = “:8086”

From a URL it works: http://cfc-000-dev:8086/query?q=SHOW+DATABASES&db=_internal
{“results”:[{“statement_id”:0,“series”:[{“name”:“databases”,“columns”:[“name”],“values”:[[“_internal”],[“collectd”],[“telegraf”]]}]}]}

But telegraf cannot connect to localhost:

May 31 17:10:40 cfc-000-dev telegraf[1887]: 2017-05-31T17:10:40Z E! InfluxDB Output Error: Post http://localhost:8086/write?consistency=any&db=telegraf: dial tcp 127.0.0.1:8086: getsockopt: connection refused
May 31 17:10:40 cfc-000-dev telegraf[1887]: 2017-05-31T17:10:40Z E! Error writing to output [influxdb]: Could not write to any InfluxDB server in cluster

6

ok, I ended up getting it to work on both the IP address and loopback.

bind-address = “:8086” doesn’t work.

I changed it to:

bind-address = “0.0.0.0:8086”

And now it works for external HTTP requests as well as Telegraf sending to Influx by default.

1 Like
7

i changed the port to the same port influxdb use.

in the case changed “:8086” to “:8888”
here urls = [“http://127.0.0.1:8888”] # required