JavaMelody Chart images broken, Confluence 4.1.9

[KyleAlbert95]

I have a pretty large Confluence instance running behind our corporate firewall. I've installed the JavaMelody plugin, and it works great for about 24 hours, but after that, I can't view the graphs at the top of the JavaMelody page. It appears that the plugin is working properly, but I just get the standard broken image link icon for the graphs. Screenshot is attached.

Anyone else ever seen this? Is there some configuration option I can set to fix it?

Thanks.

[KyleAlbert95 · Accepted solution]

Ok, latest follow up. I had not tried JavaMelody for a while, but re-installed it and tried it last week. Apparently, the issue I was having with the chart images no longer happens on my setup (I'm running Confluence 4.2.13 and JavaMelody 1.43.0).

Thanks for the suggestions.

[Emeric Vernat]

I do not know why the temp directory may be deleted. But you can read about how to change the storage directory of javamelody in the user's guide for JIRA/Confluence/Bamboo

[KyleAlbert95]

Ok, a little bit more info. Based on David Simpson's question above, I looked at my temp directory in the Confluence install directory, and saw nothing there. I tried creating a new directory called "javamelody" since that seems to be what is required. Then I uninstalled the plugin, reinstalled, and graphs returned. Checking the temp/javamelody directory, I could see all the temp files and rrd files in there. However, I came back 3 hours later, and the temp directory is totally empty!

Something is clearing out my temp directory in my Confluence install directory every couple of hours? Is this normal?

[KyleAlbert95]

Good question. Looking at the first chart, "Used Memory", here is the image link in the page source code:

<img class='synthèse' id='img' src='?width=960&amp;height=400&amp;graph=usedMemory' alt='zoom'/>

If I attempt to open the image in a new tab, I get a Confluence system error, with this cause:

java.io.FileNotFoundException: Could not open /usr/local/confluence/temp/javamelody/_Tauri-Confluence/usedMemory.rrd [non existent]
at org.jrobin.core.RrdDb.<init>(Unknown Source)

Like I said, what is strange is that the images work fine for about 24 hours when I first install the plugin, but then after that, nothing.

[David at David Simpson Apps]

Where are the images pointing to?