We have covered Graylog a fair bit, but to make the most of all it’s functionality we need to upgrade to an Enterprise license. Now before you start screaming “I want a FREE solution” Graylog Enterprise is free for up to 5GB of data a day, and if you are using more than that then you should be paying for it. You can use Graylog for logging without a license, however you won’t be able to make use of the Enterprise Plugins. It depends how much functionality you want from Graylog.
First we need to request a license by going to https://www.graylog.org/downloads and completing the form shown below.
Now while we are waiting for our license key to arrive we need to install the Enterprise Plugin Package to our Graylog Server. As we are running the latest version it’s as simple as below
sudo apt-get install graylog-enterprise-plugins -y
Now we need to restart the graylog server
sudo shutdown now -r
While the server is rebooting hopefully you should have received an email which contains instructions for getting your license key. Once you have your key you need to head back to Graylog and import our key. Go to the “Systems” Tab and select “License”. Then select the “Import New License” button and paste in your license.
You will then receive a message that your instance is activated, and your license will show under installed licenses on the same page.
That’s it, we are now licensed and ready to make full use of Graylog. Check back for the next steps of our free SIEM, and eventually adding threat feeds, and custom alerts to our Graylog server.