Hi Vladimir, I think I figured it out, which was still the single quote issue.
I read again old threads in 2021 when you helped Janet. At that time, you provided a solution here https://github.com/ganglia/ganglia-web/commit/14e657ac8e63012309b25307478b562a348175ee Originally, I tried this solution but it didn't work in Rocky 8.4. After discussing this issue with you, I have more knowledge on how the stack.php works and how to debug. This solution actually fixed the single quote issue for the start and end time, but it missed quote for the title. So I put the quote back around the title. After it, everything work well. Now the stacked graph finally shows up. I believe this problem exists in all versions of Rocky OS or Redhat 8.x. I tested it in several machines and all had the same issue. And this simple solution fixed the issue in all machines. Thank you very much for your time and helps in this matter. I really appreciate that. Zhongdong From: Sun, Zhongdong <zhongdong....@yale.edu> Sent: Friday, February 16, 2024 11:28 AM To: Vladimir Vuksan <vli...@veus.hr> Subject: RE: [Ganglia-general] stacked graph not working Hi Vladimir, I can comment out this line and look at the /tmp folder. There are many ganglia-graph files in PNG format. I can read the files which show some pictures in the normal ganglia-webpage, such as CPU, memory, load, network and individual nodes. However, I cannot find a picture showing the stacked graph. There is one file with zero KB in size. Probably it's the missing stacked graph. This hints the stacked graph is possibly never produced correctly. Any advices for this? Thanks. Zhongdong From: Vladimir Vuksan <vli...@veus.hr<mailto:vli...@veus.hr>> Sent: Thursday, February 15, 2024 11:29 PM To: Sun, Zhongdong <zhongdong....@yale.edu<mailto:zhongdong....@yale.edu>>; ganglia-general@lists.sourceforge.net<mailto:ganglia-general@lists.sourceforge.net> Subject: Re: [Ganglia-general] stacked graph not working Indeed htmlspecialchars will do that however it's not used in stacked.php at least not in the Github repo. You could try and comment out this line https://github.com/ganglia/ganglia-web/blob/master/functions.php#L1416 Then look in /tmp for a ganglia-graph file with full invocation to make sure that output is somehow not getting encoded. Vladimir On 2/15/24 16:08, Sun, Zhongdong wrote: Hi Vladimir, Thanks for your quick response. As I understand, the apostrophe or single quote will be converted to ' with the PHP function htmlspecialchars because it's considered as a special character. See this: PHP: htmlspecialchars - Manual<https://www.php.net/htmlspecialchars>. Later, we can convert it back with function htmlspecialchars_decode if needed. I search the folder /usr/share/ganglia and find a lot of instances of htmlspecialchars but don't know which one cause this problem. I'm not familiar with Ganglia and don't know how to debug further. This seems to happen in many Rocky 8.4 machines, all are fresh installed. The ganglia-web version is 3.7.5-40. Could you please provide more advice how to debug this? Thanks. Zhongdong From: Vladimir Vuksan <vli...@veus.hr><mailto:vli...@veus.hr> Sent: Thursday, February 15, 2024 10:56 AM To: ganglia-general@lists.sourceforge.net<mailto:ganglia-general@lists.sourceforge.net> Subject: Re: [Ganglia-general] stacked graph not working It looks like a command line arguments encoding issue somewhere around here https://github.com/ganglia/ganglia-web/blob/master/functions.php#L1410 Not sure why apostrophe is being replaced with '. That's breaking the rrdtool invocation. You will need to investigate how to change that behavior. Vladimir On 2/14/24 12:19, Sun, Zhongdong wrote: Hi everyone, We just installed a new instance of Ganglia on Rocky OS 8.4. Everything works well except the stacked graph doesn't show up. I searched this forum and found a few similar cases. For example, Janet reported this issue in 2021, but in a CentOS 7 system. Vladimir provided some solution but didn't work in Rocky 8 system. I also following some instructions for debug. Copied the address of the stacked graph and appended '&debug=5', which produced a command like this. /usr/bin/rrdtool graph - -E --start \&\#039\;-3600s\&\#039\; --end \&\#039\;N\&\#039\; --width 700 --height 300 --title \&\#039\; aggregated load_one last hour\&\#039\; --upper-limit \&\#039\;0\&\#039\; --lower-limit \&\#039\;0\&\#039\; CDEF:total=0 CDEF:mean=total,0,/ CDEF:last_total=total,POP,0 CDEF:last_mean=last_total,0,/ COMMENT:'\j' GPRINT:'total':AVERAGE:'Avg Total\: %5.2lf' GPRINT:'last_total':LAST:'Current Total\: %5.2lf\c' GPRINT:'mean':AVERAGE:'Avg Average\: %5.2lf' GPRINT:'last_mean':AVERAGE:'Current Average\: %5.2lf\c' When I ran this command in the machine, I got this result. ERROR: start time: unparsable time: &'-3600s' Does anyone know what can cause this? It seems a bug in stacked.php or relative program, but I'm not familiar with this and cannot figure it out. By the way, we have been using Ganglia for a long time. It works perfectly in CentOS 7. But we have to upgrade CentOS 7 since it's near end-of-life. Any help would be appreciated. Zhongdong _______________________________________________ Ganglia-general mailing list Ganglia-general@lists.sourceforge.net<mailto:Ganglia-general@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/ganglia-general
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