These are the questions we have identified as Canonical:
Capacity Planning
- Generic Capacity Planning: Can you help me with my capacity planning?
- How do you do load testing and capacity planning for databases?
- How do you do load testing and capacity planning for web sites?
Career
- Starting out: What a beginner should know/learn for sysadmin job?
Datacenter Design
- Fire Suppression: What's the best fire suppression for a server room?
Documentation
EMail & Spam
- Incoming: Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?
- Bystander: How to stop people from using my domain to send spam?
- Outgoing: How to send emails and avoid them being classified as spam?
Hardware
- Why is Enterprise Storage so expensive?
- What are the different widely used RAID levels and when should I consider them?
Hosting provider/server hardware shopping
- Dedicated server or Cloud Hosting?
- http://serverfault.com/questions/292013
- Use Google Apps/Cloud Services as a Domain Controller Replacement
Infrastructure Software
- How long does it take for DNS records to propagate?
- What is a glue record?
- How to use DNS/Hostnames or Other ways to resolve to a specific IP:Port
- Why does DNS work the way it does?
- What is Active Directory Domain Services and how does it work?
- Can I have multiple DHCP servers on one network?
- What is Group Policy and how does it work?
Licensing
Networking
- Expected Ethernet performance: Networking Units: Not getting expected performance from 100Mb Ethernet
- Hairpin Nat: How come I can't redirect TCP ports on this wireless router?
- Monitoring: What tool do you use to monitor your servers?
- Monitoring: What am I looking for in a Monitoring Solution?
- Subnets: How does IPv4 Subnetting Work?
Security
- Hacked: How do I deal with a compromised server?
- Linux Webserver Rights: What permissions should my website files/folders have on a Linux webserver?
- Misbehaving users: What should I do about a "misbehaving" user?
- Restricted Shell: How to restrict the users' shell allowing to execute shell programs
- Restricting Windows Admin: How to convince a big boss that he does not need administrator privileges?
- Securing LAMP: Tips for Securing a LAMP Server
- Worms: How do I deal with the removal/eradication of an unknown worm on our network?
- Why is "chmod -R 777 /" destructive?
SSH
Terminal Server (RDS)
Uptime
Virtualisation
Web Servers
- Redirect, Change URLs or Redirect HTTP to HTTPS in Apache - Everything You Ever Wanted to Know About mod_rewrite Rules but Were Afraid to Ask
- Picking the right MPM (on *NIX systems): How do I select which Apache MPM to use?
- One-click (x)AMP: What to do with XAMPP/MAMP/WAMP questions
- What are the differences between Websites, Directories, Virtual Directories, and Applications in IIS 7?
- SNI: Multiple SSL domains on the same IP address and same port?
