Summary

Several macros fail to display on Confluence pages due to missing fonts.

Environment

• Red Hat Enterprise Linux (RHEL) 7.4

Steps to Reproduce

1. Create a page with a 'view-file' macro
2. Attempt to view the page

Expected Results

The page is displayed and all macros render

Actual Results

The page is displayed but the view-file macro fails to render.
The below exception is thrown in the atlassian-confluence.log file:

2017-12-29 10:02:11,465 ERROR [localhost-startStop-1] [atlassian.confluence.security.DefaultCaptchaManager] afterPropertiesSet Could not initialise CAPTCHA service. The most likely reason for thisis that Java's graphics subsystem is not properly configured. Try startingConfluence's JVM with the -Djava.awt.headless=true option. 0
java.lang.ArrayIndexOutOfBoundsException: 0
	at sun.font.CompositeFont.getSlotFont(CompositeFont.java:351)
	at sun.font.CompositeGlyphMapper.initMapper(CompositeGlyphMapper.java:81)
	at sun.font.CompositeGlyphMapper.<init>(CompositeGlyphMapper.java:62)
	at sun.font.CompositeFont.getMapper(CompositeFont.java:409)
	at sun.font.CompositeFont.canDisplay(CompositeFont.java:435)
	at java.awt.Font.canDisplay(Font.java:1980)

Notes

The default font was changed from Utopia to Styx in RHEL 7.4, this is not handled well by the JVM and breaks functionality. For more information see Bug 1484079 – AWT java apps fail to start when stix-fonts is used as sans-serif font

Workaround

1. Stop Confluence
2. Create /etc/fonts/local.conf
3. Paste the following:

   <?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>
   

4. Save the file
5. Start Confluence