1. Shared Hosting Workshop
OSSCOM 2016
Managing shared hosting with FreeBSD, nginx, MariaDB, Salt, and ZFS

2. FreeBSD in a nutshell
Freely available, POSIX compliant Unix-like operating system
Runs on x86, Alpha, Sparc64, IA-64, AMD64 architectures
Over 25,000 software packages available
Many commercial users
Thousands of developers around the world contributing to it
Used as an operating systems research platform
So far, so Linux...
Talal Abu-Ghazaleh Organization

3. Where it differs from Linux
Inherits code from 4.4BSD-Lite, not a clone
A “Base” system with 3rd party components
Userland tools are not GNU (bsdtar vs gnutar)
/bin/sh is really /bin/sh
Liberal BSD license
Don't claim that you wrote the code
Don't blame us if the code doesn't work
Apart from that, do anything you want with the code
Two supported OS update methods
Binary (freebsd-update)
Source (make world; make installworld)
CLI administration. X is not installed by default, all settings are tunable via CLI
Services:
Configuration files are located in /etc and /usr/local/etc
Services are enabled and configured through rc.conf.d files

4. Why FreeBSD? Security Reliability Network performance Storage
Patch/Audit tools for both system updates and 3rd part “ports”
Set UID 0 alerts on new software
Jails
Reliability
Stable ABI
POLA
Proven under heavy load
Netflix
Yahoo!
NASA
Network performance
40Gbps performance is now possible with research being done for 100Gpbs
Storage
UFS
Solid 64bit filesystem
15+ years old
Snapshots
ZFS
'nuff said
Flexibility
Ports, mix and match different software versions, no dependency hell
Linux Compatibility
Documentation
Complete, rich man pages
FreeBSD.org’s documentation is very active and has great relevant information
BSD License

5. Nginx
Nginx (pronounced "engine x") is software to provide a web server. It can act as a reverse proxy server for TCP, UDP, HTTP, HTTPS, SMTP, POP3, and IMAP protocols, as well as a load balancer and an HTTP cache.
Low memory print
Very high performance
Simple and versatile configuration file syntax
Does not support Apache’s .htaccess files

6. ZFS
ZFS is a combined file system and logical volume manager designed by Sun Microsystems. The features of ZFS include protection against data corruption, support for high storage capacities, efficient data compression, integration of the concepts of filesystem and volume management, snapshots and copy-on-write clones, continuous integrity checking and automatic repair, RAID-Z and native NFSv4 ACLs.

7. Salt
Salt is a Python-based open-source configuration management software and remote execution engine. Supporting the "Infrastructure as Code" approach to deployment and cloud management, it competes primarily with Puppet, Chef, and Ansible.