We have a new machine that we're setting up with Guacamole, and I'm putting 
version 1.0.0 on it (we have 2 others that are running 0.9.13 currently).  When 
I try to implement the MySQL database portion, I'm getting the following errors 
in /var/log/messages (this is a RHEL 7.6 server):

Mar 28 08:56:26 armt server: Loading class `com.mysql.jdbc.Driver'. This is 
deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is 
automatically registered via the SPI and manual loading of the driver class is 
generally unnecessary.
Mar 28 08:56:26 armt server: 08:56:26.452 [http-bio-8080-exec-5] ERROR 
o.a.g.rest.RESTExceptionMapper - Unexpected internal error:
Mar 28 08:56:26 armt server: ### Error querying database.  Cause: 
java.sql.SQLException: The server time zone value 'EDT' is unrecognized or 
represents more than one time zone. You must configure either the server or 
JDBC driver (via the serverTimezone configuration property) to use a more 
specifc time zone value if you want to utilize time zone support.
Mar 28 08:56:26 armt server: ### The error may exist in 
org/apache/guacamole/auth/jdbc/user/UserMapper.xml
Mar 28 08:56:26 armt server: ### The error may involve 
org.apache.guacamole.auth.jdbc.user.UserMapper.selectOne
Mar 28 08:56:26 armt server: ### The error occurred while executing a query
Mar 28 08:56:26 armt server: ### Cause: java.sql.SQLException: The server time 
zone value 'EDT' is unrecognized or represents more than one time zone. You 
must configure either the server or JDBC driver (via the serverTimezone 
configuration property) to use a more specifc time zone value if you want to 
utilize time zone support.

I downloaded MySQL JDBC driver and put it in /usr/share/tomcat/.guacamole/lib 
as instructed, and tomcat and guacd restart successfully.  But when I try to 
load the page, I get a 500 error in the debug console, and the error above in 
/var/log/messages.

Ideas?
Thanks,
Harry

Harry Devine
DOT/FAA/AJM-2412
Common ARTS Software Development
Terminal Server (NASDAC) Adminstrator
Red Hat Certfied System Adminstrator (RHCSA)
[email protected]<mailto:[email protected]>
(609)485-4218
Building 300, 3rd Floor, Column L20 (3L20)

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