User genneko shares us their notes on what they learned about FreeBSD after using it in a production environment. They walk us through templates, configuring the jail NAT, to building the VIMAGE-enabled kernel. See the link below for the author’s notes to learn something new about jails. 
I have heard about jails many times since my early days of FreeBSD life but it was only the last year I began to use it in production.
This article is a sort of personal notebook where I summarize what I learned about jails. It would be frequently updated as I learn more.
Assumptions
- The host is running FreeBSD 11.2/amd64 on ZFS.
- Each jail has a separate root dataset under /vm on the host.
- Template datasets are created under /vm/tmpl like /vm/tmpl/11.2.
- Jails are generated by cloning or send/receive(copying) a template dataset. ….
Original post: https://genneko.github.io/playing-with-bsd/system/learning-notes-on-jails/
Hacker News discussion: https://news.ycombinator.com/item?id=18318771
