PDF Report Generation broken

[GldRush98]

Nagios XI 2014R1.3-REV2812
All system components up to date.

I can run reports through the web gui fine, but if I click the PDF button to generate a file, I am greeted with messages like:

************ ERROR: Failed to render URL 'https://[redacted]/nagiosxi//reports/execsummary.php?1&hideoptions=1&username=noverstreet&ticket=[valid ticket id]&locale=en_US' as '/usr/local/nagiosxi/tmp/scheduledreport-noverstreet-1407434133-page.pdf' ************

And possibly related, on the generated graphs/pie charts, if I click the "Download PNG Image" or "Download JPEG Image" or any of those links to try and download the generated image, it just does nothing.

[lmiltchev]

Do you have a correct "Program URL" specified under the "System Settings" (Admin->Manage System Config)? Do you have "External URL" specified as well? If you do, what happens when you remove the "External URL"? Are you able to generate the report then?

[GldRush98]

Yes, Program URL has the url we always access it through https://sub.domain.com/nagiosxi
and the External URL box is blank since we don't use a different external url.

[lmiltchev]

Run the following commands and show us the output:

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cat /etc/hosts
ls -ld /usr/local/nagiosxi/tmp
ls -ld /usr/local/nagiosxi
/usr/bin/wkhtmltopdf -V

Also, run the following command and upload the report.txt file that was generated in /tmp.

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curl "https://[redacted]/nagiosxi//reports/execsummary.php?1&hideoptions=1&username=noverstreet&ticket=unuqm6kqibunluhmvetj282l0ibhokcnc8fvc3ptblitj3hggf0ik35jid480dsa&locale=en_US" > /tmp/report.txt

[GldRush98]

Run the following commands and show us the output:

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cat /etc/hosts
ls -ld /usr/local/nagiosxi/tmp
ls -ld /usr/local/nagiosxi
/usr/bin/wkhtmltopdf -V

Also, run the following command and upload the report.txt file that was generated in /tmp.

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curl "https://[redacted]/nagiosxi//reports/execsummary.php?1&hideoptions=1&username=noverstreet&ticket=[valid ticket id]&locale=en_US" > /tmp/report.txt

Well, here's the likely problem:

[root@nagios ~]# /usr/bin/wkhtmltopdf -V
Segmentation fault

Not sure how to go about updating/fixing that...

[lgroschen]

Good morning GldRush98!

I think there is a chance that you don't have enough memory to run wkhtmltopdf since it's a fairly large program. Are you running this XI in a VM? If so how much memory is allocated to the VM? Upping the memory could be a good test to see if this is the problem.

Then try running:

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top

in the XI box command line and print out the entire output here in a code box.

Thanks!
/Luke

[GldRush98]

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top - 13:12:28 up 58 days, 21:21,  1 user,  load average: 3.22, 2.93, 2.74
Tasks: 168 total,   2 running, 166 sleeping,   0 stopped,   0 zombie
Cpu(s): 12.1%us,  1.8%sy,  0.0%ni, 84.9%id,  1.0%wa,  0.0%hi,  0.2%si,  0.0%st
Mem:   2097152k total,  1715528k used,   381624k free,   113148k buffers
Swap:  4161528k total,   135148k used,  4026380k free,   555872k cached

Not a problem with the file itself?

Broken server:

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-rwxr-xr-x 1 root root     11M Jan 30  2011 wkhtmltopdf

There also doesn't seem to be a wkhtmltoimage file that I noticed on another server...

[GldRush98]

Well, this is interesting...

http://blog.behance.net/dev/wkhtmltopdf ... ault-mania

Simply put, Xen is a completely different type of Linux kernel that Rightscale ( our web based cloud computing management platform ) uses to deploy millions of cloud-servers onto the web. The creator of the wkhtmltoimage/PDF libraries currently does NOT support Xen ( and probably won’t ). As a result, the static binary files FAIL upon execution every single time. Currently the only solution, ironically, is to use the 32-bit versions of these tools. Hopefully this saves someone out there from spending a couple days trying to debug this issue!

It is indeed a Xen VM... It looks like I need to switch it to the 32 bit version?

[GldRush98]

Well, I got wkhtmltopdf working by installing the 32 bit version and needed libs:

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wget http://downloads.sourceforge.net/project/wkhtmltopdf/0.12.1/wkhtmltox-0.12.1_linux-centos5-i386.rpm
rpm -i wkhtmltox-0.12.1_linux-centos5-i386.rpm
vi /etc/yum.conf

Edit the yum.conf to remove the exclusion to *.i?86 files (you may want to add this bad in after you install the 32 bit libs needed to run this)
Then it looked like since I install the rpm it didn't install dependencies of course... so after some hunting and pecking I ended up with:

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yum install glibc.i686 libjpeg-6b-38.i386 libpng-1.2.10-17.el5_8.i386 libXrender-0.9.1-3.1.i386 fontconfig-2.4.1-7.el5.i386 libXext-1.0.1-2.1.i386 libstdc++.so.6 -y

And finally

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[root@nagios bin]# /usr/local/bin/wkhtmltopdf -V
wkhtmltopdf 0.12.1 (with patched qt)

Rename old file so it'll use the right one:

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mv wkhtmltopdf wkhtmltopdf_old

Still not working. Thought maybe there was a hard coded path in Nagios somewhere so in /usr/bin

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ln -s /usr/local/bin/wkhtmltopdf wkhtmltopdf

*Still not working*. (still getting "************ ERROR: Failed to render URL")

Argh, I've got to be close.

[lgroschen]

Yes! I did see that article about the lack of Xen support.

It is a hardcoded path, but it should be located in:

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/usr/bin/

not /usr/local/bin/

That's where you should also find the wkhtmltoimage file as well.

Try this and let me know what the full output is. It says 'Failed to render URL ' which means there is no URL that is being targeted or it would print which URL target had failed.