Bug report

Relevant telegraf.conf:

[[inputs.rethinkdb]]
  servers = ["rethinkdb://rethinkdb_username1:rethinkdb_password1@127.0.0.1:28015"]

System info:

Telegraf: telegraf-1.2.1.x86_64.rpm
Rethinkdb: 2.3.5
Operating system: Fedora 25 linux

Steps to reproduce:

Tested on fedora 25 linux

1. Install rethinkdb of 2.3.5 version via RPM (https://rethinkdb.com/docs/install/fedora/)
2. Set authorization - username and password https://rethinkdb.com/docs/permissions-and-accounts/
3. Install telegraf with rethinkdb extraction config like i mentioned above
4. systemctl start telegraf
5. # journalctl -u telegraf -e

Expected behavior:

Telegraf connects to rethinkdb and gets data

Actual behavior:

Telegraf unable to connect to rethinkdb.
Telegraf sends this to journalctl -u telegraf -e and rethinkdb is not monitored

Jun 23 12:08:10 rethinkdb-cluster-1.localdomain telegraf[27886]: 2017-06-23T12:08:10Z E! ERROR in input [inputs.rethinkdb]: Unable to connect to RethinkDB, no connections were made when creating the session
Jun 23 12:08:10 rethinkdb-cluster-1.localdomain telegraf[27886]: time="2017-06-23T12:08:10Z" level=warning msg="Error creating connection: gorethink: Server dropped connection with message: \"ERROR: Incorrect authorization key.\""

Additional info:

I have fixed it by this PR
#2959

Feature Request

Please, help me monitor rethinkdb, fix the issue with connections!

Proposal:

Use latest RethinkDB library with proper authorization

Current behavior:

Fails to connect

Desired behavior:

Connects and monitors

Use case:

I want to use your telegraf system to monitor our rethinkdb 2.3.5 cluster, but it simply don't works.