Blank page in LibreNMS

Help
1

I have a LibreNMS instance where the web page returns a blank page.

The log in /opt/librenms/logs/error_log tells me

[Tue Apr 02 10:30:45.844481 2019] [:error] [pid 10320] [client 10.18.0.223:41092] PHP Fatal error: Uncaught Error: Class ‘App\Facades\LogManager’ not found in /opt/librenms/app/Providers/AppServiceProvider.php:74\nStack trace:\n#0 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(726): App\Providers\AppServiceProvider->App\Providers\{closure}(Object(App\Application), Array)\n#1 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(608): Illuminate\Container\Container->build(Object(Closure))\n#2 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(575): Illuminate\Container\Container->resolve(‘log’)\n#3 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(728): Illuminate\Container\Container->make(‘log’)\n#4 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(66): Illuminate\Foundation\Application->make(‘log’)\n#5 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(81): Illuminate\Foundation\Exceptions\Handler->report(Object(Symfony in /opt/librenms/app/Providers/AppServiceProvider.php on line 74

Running ./validate.php tells me

PHP Fatal error:  Uncaught Error: Class 'App\Facades\LogManager' not found in /opt/librenms/app/Providers/AppServiceProvider.php:74
Stack trace:
#0 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(726): App\Providers\AppServiceProvider->App\Providers\{closure}(Object(App\Application), Array)
#1 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(608): Illuminate\Container\Container->build(Object(Closure))
#2 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(575): Illuminate\Container\Container->resolve('log')
#3 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(728): Illuminate\Container\Container->make('log')
#4 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(66): Illuminate\Foundation\Application->make('log')
#5 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(81): Illuminate\Foundation\Exceptions\Handler->report(Object(Symfony in /opt/librenms/app/Providers/AppServiceProvider.php on line 74
2

If you run these commands, does it help?

sudo chown -R librenms:librenms /opt/librenms
sudo setfacl -d -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/
sudo chmod -R ug=rwX /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/

Can you post full daily.sh and validate.php outputs

and also du -sh /opt/librenms/storage/logs

3

Thanks for the quick response. I ran your commands.

Running daily.sh with the librenms user gives the (massive) output

librenms@librenms:~$ ./daily.sh 
PHP Fatal error:  Class 'Illuminate\Log\LogManager' not found in /opt/librenms/app/Facades/LogManager.php on line 30
PHP Fatal error:  Uncaught Error: Class 'App\Facades\LogManager' not found in /opt/librenms/app/Providers/AppServiceProvider.php:74
Stack trace:
#0 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(726): App\Providers\AppServiceProvider->App\Providers\{closure}(Object(App\Application), Array)
#1 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(608): Illuminate\Container\Container->build(Object(Closure))
#2 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(575): Illuminate\Container\Container->resolve('log')
#3 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(728): Illuminate\Container\Container->make('log')
#4 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(66): Illuminate\Foundation\Application->make('log')
#5 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(81): Illuminate\Foundation\Exceptions\Handler->report(Object(Symfony in /opt/librenms/app/Providers/AppServiceProvider.php on line 74
Unsupported PHP version, switched to php56 branch. FAIL
error: Your local changes to the following files would be overwritten by checkout:
	.travis.yml
	LibreNMS/Alert/AlertUtil.php
	LibreNMS/Alert/Template.php
	LibreNMS/Alert/Transport/Gitlab.php
	LibreNMS/Alert/Transport/Msteams.php
	LibreNMS/Alert/Transport/Pushover.php
	LibreNMS/Alert/Transport/Telegram.php
	LibreNMS/Alert/Transport/Victorops.php
	LibreNMS/Alerting/QueryBuilderFilter.php
	LibreNMS/Config.php
	....

More at https://pastebin.com/g2CMxUf8 (unable to post it all here)

Running ./validate.php with root gives the output
root@librenms:/opt/librenms# ./validate.php
PHP Fatal error: Class ‘Illuminate\Log\LogManager’ not found in /opt/librenms/app/Facades/LogManager.php on line 30
====================================
Component | Version
--------- | -------
LibreNMS | 1.44-54-gc37786d
DB Schema | Not Connected (0)
PHP | 7.0.33-0ubuntu0.16.04.3
MySQL | ?
RRDTool | 1.5.5
SNMP | NET-SNMP 5.7.3
====================================

[OK]    Composer Version: 1.8.4
[OK]    Dependencies up-to-date.
PHP Fatal error:  Uncaught Error: Class 'App\Facades\LogManager' not found in /opt/librenms/app/Providers/AppServiceProvider.php:74
Stack trace:
#0 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(726): App\Providers\AppServiceProvider->App\Providers\{closure}(Object(App\Application), Array)
#1 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(608): Illuminate\Container\Container->build(Object(Closure))
#2 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(575): Illuminate\Container\Container->resolve('log')
#3 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(728): Illuminate\Container\Container->make('log')
#4 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(66): Illuminate\Foundation\Application->make('log')
#5 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(81): Illuminate\Foundation\Exceptions\Handler->report(Object(Symfony in /opt/librenms/app/Providers/AppServiceProvider.php on line 74

The size of the logs are 12MB
12M /opt/librenms/storage/logs

Perhaps it could be as mentioned in the ./daily.sh output that my php version has changed (been updated) and is no longer supported? DB Schema is said to not be connected as well … Not sure what the expected behaviour / result should be

4

Is your environment set to manual updates?

did you try to update and then got the blank GUI, or do you roughly know how long its been blank for ?

Hopefully after you upgrade to php 7.2 you will see less issues.

5

It’s been blank for roughly the past week. I believe it was because of an update. It was set to automatic update but I turned it off today.

I may add that I run Ubuntu 16.04

6

I updated to php7.2 and ran ./validate.php and ./daily.sh again with similar result.

./validate.php
root@librenms:/opt/librenms# ./validate.php
PHP Fatal error: Class ‘Illuminate\Log\LogManager’ not found in /opt/librenms/app/Facades/LogManager.php on line 30
====================================
Component | Version
--------- | -------
LibreNMS | 1.44-54-gc37786d
DB Schema | Not Connected (0)
PHP | 7.2.16-1+ubuntu16.04.1+deb.sury.org+1
MySQL | ?
RRDTool | 1.5.5
SNMP | NET-SNMP 5.7.3
====================================

[OK]    Composer Version: 1.8.4
[OK]    Dependencies up-to-date.
PHP Fatal error:  Uncaught Error: Class 'App\Facades\LogManager' not found in /opt/librenms/app/Providers/AppServiceProvider.php:74
Stack trace:
#0 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(726): App\Providers\AppServiceProvider->App\Providers\{closure}(Object(App\Application), Array)
#1 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(608): Illuminate\Container\Container->build(Object(Closure))
#2 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(575): Illuminate\Container\Container->resolve('log')
#3 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(728): Illuminate\Container\Container->make('log')
#4 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(66): Illuminate\Foundation\Application->make('log')
#5 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(81): Illuminate\Foundation\Exceptions\Handler->report(Object(Symfony in /opt/librenms/app/Providers/AppServiceProvider.php on line 74

./daily.sh
librenms@librenms:~$ ./daily.sh
PHP Fatal error: Class ‘Illuminate\Log\LogManager’ not found in /opt/librenms/app/Facades/LogManager.php on line 30
PHP Fatal error: Uncaught Error: Class ‘App\Facades\LogManager’ not found in /opt/librenms/app/Providers/AppServiceProvider.php:74
Stack trace:
#0 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(726): App\Providers\AppServiceProvider->App\Providers{closure}(Object(App\Application), Array)
#1 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(608): Illuminate\Container\Container->build(Object(Closure))
#2 /opt/librenms/vendor/laravel/framework/src/Illuminate/Container/Container.php(575): Illuminate\Container\Container->resolve(‘log’)
#3 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(728): Illuminate\Container\Container->make(‘log’)
#4 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php(66): Illuminate\Foundation\Application->make(‘log’)
#5 /opt/librenms/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(81): Illuminate\Foundation\Exceptions\Handler->report(Object(Symfony in /opt/librenms/app/Providers/AppServiceProvider.php on line 74
PHP Fatal error: Class ‘Illuminate\Log\LogManager’ not found in /opt/librenms/app/Facades/LogManager.php on line 30
PHP Fatal error: Uncaught Error: Class ‘App\Facades\LogManager’ not found in /opt/librenms/app/Providers/AppServiceProvider.php:74
[…] More at https://pastebin.com/GjNUYuhS

7

Is MariaDB running?

Did you run those permission lines aswell any difference?

8

I tried to reach the webinterface and saw a couple of missing dependencies for php7.2 which I installed. Then daily.sh / validate gave me some more information and [FIX] recommendations that I kept going at. After a little tweaking I managed to reach the site again and everything works as expected.

Thanks a lot for the help!

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