Geneos - Why is my Webdashboard blank when uploaded in a RHELv7.4 + system

Description of the issue:

When deploying WebDashboard into a Red Hat Enterprise version 7.4 or above, the dashboard when accessed through the interface is blank (white) and java error is displayed in the Webdashboard.log

2019-01-22 13:06:19 DashboardExecutorService [ERROR] Uncaught exception thrown...
java.lang.ArrayIndexOutOfBoundsException: 0
at sun.font.CompositeStrike.getStrikeForSlot(CompositeStrike.java:75)
at sun.font.CompositeStrike.getFontMetrics(CompositeStrike.java:93)
at sun.font.FontDesignMetrics.initMatrixAndMetrics(FontDesignMetrics.java:359)
at sun.font.FontDesignMetrics.<init>(FontDesignMetrics.java:350)
at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:302)
at sun.java2d.SunGraphics2D.getFontMetrics(SunGraphics2D.java:855)
at com.itrsgroup.guicomponents.diagramcanvas.CanvassObjectGrouping.renderCanvassObjectGrouping(Unknown Source)
at com.itrsgroup.swing.activedashboardmanager.DashboardObject.renderCanvassObjectGrouping(Unknown Source)

have a look here for more information

https://bugzilla.redhat.com/show_bug.cgi?id=1479563

Solution:

You can try one of the following

1. Install an additional font (try "dejavu-serif-fonts" as a start)
2. Replace STIX with a non CFF one ("the JDK specifically needs Type 1 and TrueType fonts, while CFF are OpenType Type 2 fonts")
3. Create a /etc/fonts/local.conf file to force back Utopia as the default font, used by java.

<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
 <alias>
 <family>serif</family>
 <prefer><family>Utopia</family></prefer>
 </alias>
 <alias>
 <family>sans-serif</family>
 <prefer><family>Utopia</family></prefer>
 </alias>
 <alias>
 <family>monospace</family>
 <prefer><family>Utopia</family></prefer>
 </alias>
 <alias>
 <family>dialog</family>
 <prefer><family>Utopia</family></prefer>
 </alias>
 <alias>
 <family>dialoginput</family>
 <prefer><family>Utopia</family></prefer>
 </alias>
</fontconfig>