a question about Liferay configuration..
I have found it:
If you want to expose multiple websites with different domain names from the same portal installation then you will have to create multiple portal instances. Portal instance can be created from liferay control panel. The data for all the instances resides on the same database. Every table in liferay has a column - companyId. For each portal instance there is a unique companyID. This id is ued to distinguish data for multiple websites. You can use sharding technique if we want to physically store data for different instances into different databases.
Is possible to create many Liferay instances with separate - data and users data (for login) shared in all liferay instances?