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https://issues.apache.org/jira/browse/GUACAMOLE-760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16889780#comment-16889780
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Daniel Wydler commented on GUACAMOLE-760:
-----------------------------------------
I have the same problem on an Server where is hosted in germany. After every
reboot i see only a blank screen in the web browser.
/var/log/tomcat8/catalina.out
### Error querying database. Cause: java.sql.SQLException: The server time
zone value 'CEST' 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.
To solve the problem temporary set the timezone to UTC (sudo timedatectl
set-timezone UTC)
> add timezone info using DB Connection string
> --------------------------------------------
>
> Key: GUACAMOLE-760
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-760
> Project: Guacamole
> Issue Type: Improvement
> Components: guacamole-client
> Affects Versions: 1.0.0
> Reporter: Not Speedy
> Priority: Minor
>
> a recent update to with mariadb or its driver prevented guacamole client from
> loading.
> Cause: java.sql.SQLException: The server time zone value 'CDT' is
> unrecognized or represents more than one time zone. You must configure either
> the server or JDBC driver (via the serverTimezone configuration property).....
> loading the timezone table and setting it globally on the mariadb resolved
> this, however it might be beneficial to add a system property that will set
> within the connection string.
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