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- You have something like ``"[WARNING] Could not draw graph "/var/lib/munin/cgi-tmp/munin-cgi-graph/"`` in your `/var/log/munin/munin-cgi-graph.log` ???
- **Check the directory permissions!**
- ls -l /var/lib/munin/cgi-tmp/
- shows something like
- drwxr-xr-x 3 munin www-data 4,0K Mär 29 2013 munin-cgi-graph/
- means the web server (group) has no write to this directory but graphs are rendered by cgi by the web server. So give the web server sufficient rights.
- Do
- chmod g+w /var/lib/munin/cgi-tmp/munin-cgi-graph/
- ls -l /var/lib/munin/cgi-tmp/
- now it should look like
- drwxrwxr-x 3 munin www-data 4,0K Mär 29 2013 munin-cgi-graph/
- et voilá!
- Graphs are drawn like a charm.
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