FreeBSD jails
From wikinotes
Jails are a hardened version of chroots. They allow multiple separate FreeBSD installations to run on one machine, while sharing a kernel, ram, resources.
Documentation
Tutorials
excellent/comprehensive tutorial http://clinta.github.io/freebsd-jails-the-hard-way/ FreeBSD Manual https://www.freebsd.org/doc/handbook/jails.html
Locations
/etc/rc.conf
enable jails, global jail configuration /etc/jail.conf
configure individual jails /etc/jails/*.fstab
individual jail fstabs
Notes
jail usage jail setup jail maintenance jail troubleshooting
Jail Management Tools
cbsd abstraction layer over jails/bhyve/xen iocage more powerful tool to facilitate managing jails ezjail shellscript to facilitate managing jails