CODEWITHSUNDEEP
jenkins
visit1985
visit1985

Reputation: 498

Jenkins: wrong charset on Build Time Graph rendering

We recently moved our Jenkins from a CentOS 6 Server to a CentOS 7 LXC Container. Since that, the rendering of graphs is broken. It affects the Build Time Trend graph as well as the Test Result Trend graph.

Test Result Trend

I checked the environment of master and slave - both running with LANG=en_US.utf8.

I'm not sure how this graphs are rendered and how the rendering is influenced by OS level changes. Can someone please give me a hint?

Upvotes: 0

Views: 124

Answers (1)

Terje Strand
Terje Strand

Reputation: 26

(I would prefer to comment, as this is mostly clarify questions, but I do not have enough reputation).

Questions/comments:

  • Did you keep same version of JDK (i.e. OpenJDK vs Oracle JDK). Why: They seem to behave differently with respects to fonts.

  • Did you install any fonts in the LXC container, and more specifically, the fontsconfig package? Why: Based on my local Jenkins, I see the image in question is actually a png file, complete with graph and text. I.e. the Java process is generating an image, using local fonts to render. This is not fancy HTML, using fonts within your browser.

I have seen similar issues when switching from Oracle JDK to OpenJDK, missing fontconfig and required fonts locally. However, each time I have always seen telltale exceptions/stack traces in the log file(s).

Hope this helps.

Upvotes: 1

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