Plesk License Panel - 502 Bad Gateway(nginx)

[CurlyBoss]

Fix: Plesk License Panel - 502 Bad Gateway(nginx)

Hi,

Problem: After Upgrade to Plesk 12: When I log in to the Plesk Panel and click on
Tools/Settings -> License-Management
I get this error in the main browser frame: 502 Bad Gateway (nginx)

Environment:

OS: Linux Ubuntu 10.04 x86_64
Plesk: 12.0.18 Update #13
RAM: 4GB
HDD: 200 GB / 50 GB Used
Hardware: Citrix XenServer 6.2 VM

I did the following things, after that I am able to use License Managent Panel again:

1. App Armor removed (Look here: http://kb.odin.com/en/112903 )
2. nginx was not installed, so I installed again from package cache
   

   cd /var/cache/apt/archives
   dpkg -i libapache2-mod-aclr2-psa_....deb  sw-nginx_1.6....deb

   If Cached file not available, on Debian|Ubuntu check if plesk 12 sources are setup in /etc/apt/sources.list or /etc/sources.list.d/plesk and if not set up a file (/etc/apt/sources.list.d/plesk)with this contents:
   

   deb https://autoinstall.plesk.com/ubuntu/PSA_12.0.18 lucid all

   And run "apt-get update" afterwards and use Plesk Webinterface or Console Command /usr/local/psa/admin/sbin/autoinstaller to install all nginx Components.
   
   
3. Increased Buffers of sw-cp-server (Look here: http://kb.odin.com/en/118757 )
4. Activate Nginx for Plesk
   

    /opt/psa/admin/sbin/mngnginx --enable

5. Restart Nginx
   

   /etc/init.d/nginx restart

6. Get your Plesk License File and activate it from command line with this
   

    /opt/psa/admin/sbin/keymng --install --source-file=/tmp/PLSK.123456789.key

After these steps Plesk License Manger was working again. I'm not sure if all steps are really necessary.