Virtuozzo container software reserves container IDs ranging from 0 to 100 for internal usage. Hence, if you are going to create any container then you need to start from 101. Container ID should be identical in particular Hardware node. For example, if you have 101 to 1001 containers set up on hardware node 1 then you can not create another container having 101 ID on same hardware node.

Below command will show you if the container ID you are going to assign is available to set up or not? Just SSH to the main hardware node and execute below command:

vzlist -a 101

If you receive message “container not found” then it shows that the container 101 does not exist on the particular hardware node.