Freebsd jail setup: thick jail
From wikinotes
A Thick jail is a totally separate FreeBSD install.
It can be running a differrent release from the host, and any of the other jails.
Setup Methods
Download Releases
This approach is my favourite, since it lets you download binaries for target releases.
See for available releases: ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/amd64
Download/Extract release
fetch ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/amd64/12.1-RELEASE/base.txz -o /tmp/base.txz fetch ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/amd64/12.1-RELEASE/lib32.txz -o /tmp/lib32.txz fetch ftp://ftp.freebsd.org/pub/FreeBSD/releases/amd64/amd64/12.1-RELEASE/ports.txz -o /tmp/ports.txz tar -xvf /tmp/base.txz -C /usr/local/jails/testjail/filesystem tar -xvf /tmp/lib32.txz -C /usr/local/jails/testjail/filesystem tar -xvf /tmp/ports.txz -C /usr/local/jails/testjail/filesystemUpdate/Verify baseinstall
env UNAME_r=12.1-RELEASE freebsd-update -b /usr/local/jails/testjail/filesystem fetch install env UNAME_r=12.1-RELEASE freebsd-update -b /usr/local/jails/testjail/filesystem IDSConfigure Inside of Jail
cp /etc/resolv.conf /usr/local/jails/testjail/filesystem/etc/resolv.conf echo hostname=\"fulljail1\" > /usr/local/jails/testjail/filesystem/etc/rc.conf/etc/jail.conf
# vim: ft=conf exec.start = "/bin/sh /etc/rc"; exec.stop = "/bin/sh /etc/rc.shutdown"; path = "/usr/local/jails/${host.hostname}/filesystem"; testjail { mount.devfs; host.hostname = "testjail"; interface = "em0"; ip4.addr = "192.168.1.240"; }/etc/rc.conf
# /etc/rc.conf jail_enable="YES" jail_set_hostname_allow="NO" jail_list="jail1 jail2 jail3 ..." # determines which jails start at boot