I am looking to use ISPConfig in a production cluster. Since there will be paid support plans soon, this makes it a much more attractive alternative.
Like many, I am installing on virtualized servers - in my case Rackspace cloud servers. And like many, I cannot get quota to work on these machines.
Quotacheck works fine, but quotaon returns multiple errors, including not being supported on the kernel.
Now, I am looking to change my corporate billing process, and move away from traditional hosting "plans", and simply charge for disk space and bandwidth actual usage.
The ISPConfig interface shows bandwidth, but I'm having a few strange behaviours with disk usage, probably due to quota. The usage is not being updated properly, but every now and then, it is.
I'm assuming that real-time updating is not working because quota is not running, but when I run quotacheck, it updates things.
I'm not totally sure yet, because I've only noticed this, and haven't tested all the way.
Can someone please clarify for me how ISPConfig calculates disk space used, and what it needs for this? Is quota required, and what does quota REALLY do? And how does ISPConfig calculate MySQL and mail disk usage?