We have the issue “While retrieving data for this widget, the following error (s) occurred:” After we click to “Dashboard” tab and “Input” tab.
Can we will any process on graylog server ? With the Least impact
We not sure that Related to OVA file ? (Current, We using OVA file on production)
and We SSH to graylog server, We found “failed” status of elasticsearch after We ran systemctl status elasticsearch.service command. and Can we fixed the issue ?
With 2CPUs / 2GB Memory / 22GB Storage is good for testing out graylog but if you put any type of load on it you may need to increase you RAM, Storage and CPU. This is all depending on how many logs you are receieving and for how long you want to retain them. You may have to adjust your resources as needed.
If this is a virtual machine (VM) I would suggest you increase your memory to 4 GB. That would be your “Least impact”.
This depends on what kind of logs your ingesting, how long you want to retain logs.
To find out more have a look at these links below, they might give you a better idea on how to setup Graylog for your environment.