After upgrade to 13.0.1 getting permission denied using logging app

[whositwhatnow]

When using the logging app in the admin panel, I get a spinning circle and when I look at my apache logs it gives the following error:

[Mon Apr 02 08:45:37 2018] [error] [client ] {"reqId":"Kj0LxKBlNBkMvCtHhAtB","level":3,"time":"2018-04-02T07:45:37-05:00","remoteAddr":"x.x.x.x","user":"admin","app":"PHP","method":"GET","url":
"\/nextcloud\/index.php\/apps\/logreader\/get?offset=0&count=50","message":"fopen(\/var\/log\/nextcloud.log): failed to open stream: Permission denied at \/var\/www\/html\/nextcloud\/apps\/logreade
r\/lib\/Controller\/LogController.php#56","userAgent":"Mozilla\/5.0 (X11; Linux x86_64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/64.0.3282.186 Safari\/537.36","version":"13.0.1.1"}

the permissions on that file is:

-rw-r--r-- 1 apache apache 6005 Mar 28 21:06 LogController.php

im assuming it needs the execute permission as well, but am not 100% sure.

I did the upgrade via teh command line using occ.

[MorrisJobke]

The parent folders need the executable bit set as well for the apache user. Most likely you need to set it for the world permissions for /var and /var/log.

[francescor]

world permissions for /var and /var/log ? mmh...

I solved it by moving the log file to a dedicated directory

sudo mkdir /var/log/nextcloud
sudo chown www-data.root /var/log/nextcloud
sudo cp /var/log/nextcloud/nextcloud.log /var/log/nextcloud
sudo chown www-data.root /var/log/nextcloud/nextcloud.log

then update settings (or just adding the new line) in /var/www/nextcloud/config/config.php to get:

<   'logfile' => '/var/log/nextcloud/nextcloud.log',
---
>   'logfile' => '/var/log/nextcloud.log',

then reboot