Enabling second level quota on an OpenVZ node

To enable second level quota on the node. Execute the following command on the node:

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vzctl set CTID --quotaugidlimit 200 --save

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Then, if the server has cPanel, do run /script/fixquota

NOTE:
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On the command,  --quotaugidlimit 200 < this is the number that defines the max file owners.

Example: You have 200 users into the vps, set it to 220. You have 500 users into the vps, set it to something more than 500.The high value, the more kernel memory overhead will be created.