fail to start logstash with error Received an unsupported protocol version.

[thomasmodeneis]

Using latest 2.2.6 and previous 2.2.5

logstash 2.2.0 and logstash 2.3.0 same results, Iḿ not sure what maybe wrong

{:message=>"A plugin had an unrecoverable error. Will restart this plugin.\n (...) <LogStash::Codecs::JSONLines charset=>\"UTF-8\", delimiter=>\"\\n\">, squash=>true>\n  Error: Connection closed by server (unexpected token at 'ERROR: Received an unsupported protocol version. This port is for RethinkDB queries. Does your client driver version not match the server?\n').", :level=>:error}

Any ideas what maybe the issue?

[danielmewes]

@thomasmodeneis Which version of the Ruby driver and which RethinkDB server version are you using? We released a new Ruby driver version 2.3.0.0 today, which is only compatible with RethinkDB 2.3.0. You might need to install a previous Ruby driver version or upgrade RethinkDB.

[thomasmodeneis]

Iḿ not sure how to check for the Ruby driver version, any suggestions ? Rethinkdb is 2.2.6

Ive installed with this command: sudo bin/plugin install logstash-input-rethinkdb How can I make it install a specific version?

[danielmewes]

I'm actually not 100% sure how plugin install fetches and installs dependencies.

One thing you could do is change https://github.com/rethinkdb/logstash-input-rethinkdb/blob/master/logstash-input-rethinkdb.gemspec in your local checkout and change the line

s.add_runtime_dependency 'rethinkdb', '>=2.2.0'

to

s.add_runtime_dependency 'rethinkdb', '=2.2.0.1'

You can also run gem list rethinkdb to see which driver versions are currently installed and install the 2.2.0.1 driver with sudo gem install rethinkdb -v 2.2.0.1. You might have to uninstall the 2.3.0.0 driver first to have the plugin actually use the older driver (sudo gem uninstall rethinkdb -v 2.3.0.0).