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From Erik Berndt <>
Subject Re: "Communications link failure" Exception being thrown.... Dear god help
Date Tue, 23 Oct 2018 20:15:57 GMT
MariaDB is a fork of MySQL, so the mysql-auth extension should work the
same as it does with MySQL.

Erik Berndt

On Tue, Oct 23, 2018 at 4:08 PM Zachary Piazza <> wrote:

> You don't have to apologize my dude I appreciate any input. Gonna open up
> a aws support ticket and see what they can tell me. How would I use the
> MariaDB connector with guacamole tho? There's no Auth extension for Maria.
> On Tue, Oct 23, 2018, 3:04 PM Nick Couchman <> wrote:
>> On Tue, Oct 23, 2018 at 3:32 PM doyouhas <> wrote:
>>> I checked my cloudwatch logs. Nothing relating to this problem was logged
>>> there. And as I stated in my previous post, on the instance where I've
>>> installed guacamole, I installed the mysql client and can connect to the
>>> database fine. I'm thinking it must have something to do with JDBC and
>>> AWS
>>> RDS, bc when I install mysql server on a physical instance, it doesn't
>>> have
>>> this issue. But I'm not pro enough with java to understand this JDBC
>>> failure.
>> I'm guessing you're using a recent-ish version of the MySQL driver in
>> your Guacamole instance?  According to Amazon's docs they recommend the
>> MariaDB Connector/J JDBC connector for connecting to Aurora, but I'm
>> guessing MySQL should work fine, too.  Also, looks like Aurora can be set
>> up to use SSL/TLS - is that enabled/required/default on your Aurora
>> instance?
>> Sorry, trying to help but kind of shooting in the dark, here - I agree
>> with the other folks that have responded that it really feels like some
>> sort of network connectivity, firewall, or VDC configuration issue that is
>> blocking the JDBC connection from hitting the Aurora instance.
>> -Nick


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