Reporting Module post "Error failed to load PDF document" when downloading

aclark6996 · January 25, 2020, 5:23pm

I love the Reporting Module but I’m having trouble using the downloading PDF option. I though the problem was only with my laptop but I have try downloading the PDF in Reporting on five different system and I am getting the same error. Has anyone else resolved this problem?
This is also causing a problem with the drop down PDF option in the normal Icingaweb2 hosts and service overview webpages. If I disable the pdfexport module the overview pages will work again.

Icinga 2.11.2-1
Icingaweb2 2.7.3
idoreports 0.9.1
ipl 0.4.0
pdfexport 0.9.1
reacthuncle 0.6.0
reporting 0.10
Chrome 79.0.3945.88
Red Hat Enterprise 7.7

Thanks in advance for your help.
Alex

anon66228339 · January 27, 2020, 8:42am

Did you install also all the requirements?
The pdf module also needs chrome/chromium, see https://github.com/Icinga/icingaweb2-module-pdfexport/blob/master/doc/02-Installation.md

aclark6996 · January 28, 2020, 6:20pm

Hello Carseten,
Yes, I have the pdfexport module installed and all the optional requirements installed.

pdfexport 0.9.1
Icingaweb2 2.7.3
RH-PHP71-PHP-FPM 7.1.30
Chrome 79.0.3945.88
mesa-libOSMesa 18.3.4.-5
mesa-libOSMesa-devel 18.3.4.-5
gnu-free-sans-fonts 20120503-8
ipa-gothic-fonts 003.03-5
ipa-pgothic-fonts 003.03-5

aclark6996 · January 28, 2020, 6:32pm

See PHP status message below

servicectl status rh-php71-php-fpm

● rh-php71-php-fpm.service - The PHP FastCGI Process Manager
   Loaded: loaded (/usr/lib/systemd/system/rh-php71-php-fpm.service; enabled; vendor preset: disabled)
   Active: active (running) since Tue 2020-01-28 13:12:13 EST; 16min ago
  Process: 5190 ExecReload=/bin/kill -USR2 $MAINPID (code=exited, status=0/SUCCESS)
 Main PID: 26915 (php-fpm)
   Status: "Processes active: 0, idle: 6, Requests: 29, slow: 0, Traffic: 0req/sec"
   CGroup: /system.slice/rh-php71-php-fpm.service
           ├─26915 php-fpm: master process (/etc/opt/rh/rh-php71/php-fpm.conf
           ├─26916 php-fpm: pool www                                   
           ├─26917 php-fpm: pool www                                   
           ├─26918 php-fpm: pool www                                   
           ├─26919 php-fpm: pool www                                   
           ├─26920 php-fpm: pool www                                   
           ├─27446 php-fpm: pool www                                   
           ├─27560 /usr/bin/google-chrome-stable --headless --disable-gpu --no-sandbox --remote-debugging-port=0
           ├─27564 cat
           ├─27565 cat
           ├─27567 /opt/google/chrome/chrome --type=zygote --no-sandbox --headless --headless --enable-crash-reporter
           ├─27580 /opt/google/chrome/chrome --type=gpu-process --field-trial-handle=4059520132588618078,763673117136711017,131072 --no-sandbox --headless --headless --enable-crash-reporter --gpu-preferences=KAAAAAAAAAAgAAAgAAAAAAAAYAAAAAAAEAAAAAAAAAAAAAAAAAAAAAgAAAAAAAAA --use-gl=swiftshader-webgl --override-use-software-gl-for-tests --service-request-channel-token=1463149631323911949
           ├─27581 /opt/google/chrome/chrome --type=utility --field-trial-handle=4059520132588618078,763673117136711017,131072 --lang=en-US --service-sandbox-type=network --no-sandbox --use-gl=swiftshader-webgl --headless --enable-crash-reporter --service-request-channel-token=11208388452277422793 --shared-files=v8_context_snapshot_data:100,v8_natives_data:10
           ├─27586 /opt/google/chrome/chrome --type=renderer --no-sandbox --allow-pre-commit-input --remote-debugging-port=0 --use-gl=swiftshader-webgl --field-trial-handle=4059520132588618078,763673117136711017,131072 --disable-databases --disable-gpu-compositing --lang=en-US --headless --enable-crash-reporter --num-raster-threads=1 --service-request-channel-token=5492735694971916027 --renderer-client-id=3 --shared-files=v8_context_snapshot_data:100,v8_natives_data:10
           └─27591 /opt/google/chrome/chrome --type=renderer --no-sandbox --allow-pre-commit-input --remote-debugging-port=0 --use-gl=swiftshader-webgl --field-trial-handle=4059520132588618078,763673117136711017,131072 --disable-databases --disable-gpu-compositing --lang=en-US --headless --enable-crash-reporter --num-raster-threads=1 --service-request-channel-token=4719066026970916391 --renderer-client-id=5 --shared-files=v8_context_snapshot_data:100,v8_natives_data:10

Jan 28 13:12:13 myserver systemd[1]: Starting The PHP FastCGI Process Manager...
Jan 28 13:12:13 myserver systemd[1]: Started The PHP FastCGI Process Manager.
Jan 28 13:19:41 myserver icingaweb2[27446]: WebSocket\ConnectionException in /usr/share/icingaweb2/modules/pdfexport/vendor/textalk/websocket/lib/Base.php:202 with message: Empty read; connection dead?  Stream state: {"timed_out":false,"blocked":true,"eof":true,"stream_type":"tcp_socket\/ssl","mode":"r+","unread_bytes":0,"seekable":false}    #0 /usr/share/icingaweb2/modules/pdfexport/vendor/textalk/websocket/lib/Base.php(92): WebSocket\Base->read(Integer)    #1 /usr/share/icingaweb2/modules/pdfexport/vendor/textalk/websocket/lib/Base.php(173): WebSocket\Base->receive()    #2 /usr/share/icingaweb2/modules/pdfexport/library/Pdfexport/HeadlessChrome.php(276): WebSocket\Base->close()    #3 /usr/share/icingaweb2/modules/pdfexport/library/Pdfexport/HeadlessChrome.php(215): Icinga\Module\Pdfexport\HeadlessChrome->printToPDF(String, String, Array)    #4 /usr/share/icingaweb2/modules/reactbundle/vendor/evenement/evenement/src/Evenement/EventEmitterTrait.php(34): Icinga\Module\Pdfexport\HeadlessChrome->Icinga\Module\Pdfexport\{closure}(String)    #5 /usr/share/icingaweb2/modules/reactbundle/vendor/evenement/evenement/src/Evenement/EventEmitterTrait.php(70): Evenement\EventEmitter->Evenement\{closure}(String)    #6 /usr/share/icingaweb2/modules/reactbundle/vendor/react/stream/src/ReadableResourceStream.php(146): Evenement\EventEmitter->emit(String, Array)    #7 /usr/share/icingaweb2/modules/reactbundle/vendor/react/event-loop/src/StreamSelectLoop.php(244): React\Stream\ReadableResourceStream->handleData(Resource)    #8 /usr/share/icingaweb2/modules/reactbundle/vendor/react/event-loop/src/StreamSelectLoop.php(211): React\EventLoop\StreamSelectLoop->waitForStreamActivity(NULL)    #9 /usr/share/icingaweb2/modules/pdfexport/library/Pdfexport/HeadlessChrome.php(225): React\EventLoop\StreamSelectLoop->run()    #10 /usr/share/icingaweb2/modules/pdfexport/library/Pdfexport/ProvidedHook/Pdfexport.php(82): Icinga\Module\Pdfexport\HeadlessChrome->toPdf()    #11 /usr/share/icingaweb2/modules/reporting/application/controllers/ReportController.php(118): Icinga\Module\Pdfexport\ProvidedHook\Pdfexport->streamPdfFromHtml(Object(Icinga\Module\Pdfexport\PrintableHtmlDocument), String)    #12 /usr/share/icingaweb2/library/vendor/Zend/Controller/Action.php(507): Icinga\Module\Reporting\Controllers\ReportController->downloadAction()    #13 /usr/share/php/Icinga/Web/Controller/Dispatcher.php(76): Zend_Controller_Action->dispatch(String)    #14 /usr/share/icingaweb2/library/vendor/Zend/Controller/Front.php(937): Icinga\Web\Controller\Dispatcher->dispatch(Object(Icinga\Web\Request), Object(Icinga\Web\Response))    #15 /usr/share/php/Icinga/Application/Web.php(300): Zend_Controller_Front->dispatch(Object(Icinga\Web\Request), Object(Icinga\Web\Response))    #16 /usr/share/php/Icinga/Application/webrouter.php(99): Icinga\Application\Web->dispatch()    #17 /usr/share/icingaweb2/public/index.php(4): require_once(String)    #18 {main}

aclark6996 · January 28, 2020, 8:56pm

I just found an open issue with this problem on GitHub. I will follow this and wait for a solution.