WikiEducator:Hosting/Migration/Final Spec
From WikiEducator
Each server will be configured the same. One will be the active server (replacing the current machine) and the other will be a hot failover machine.
Contents
Hardware Requirements
- 4GB (or more) RAM
- separate spindle for boot and swap
- dual network interfaces (one for public network, another for connection to other server)
- remote console access (?)
Software Requirements
- kvm-enabled kernel
- four filesystems totaling at least 150GB of usable space:
| use | size | notes |
|---|---|---|
| / | max(50, total/3) GB | |
| /boot | 5 GB | |
| /var/lib/mediawiki | at least 50 GB | (mounted noatime) |
| /var/lib/mysql | at least 50 GB | (mounted noatime) |
- MySQL in master/slave replication mode
Ideal Hardware Configuration
If an additional virtualized server is available, it would be nice to separate the database server(s) from the web servers. The current demands do not require it, but the move makes an ideal time to plan for the future. There might be three servers inter-connected with a private gigabit LAN. Each server should be equipped with a remote access card ("lights out management", DRAC, etc.) permitting control at the BIOS level over the 'net.
| # | function(s) | configuration |
|---|---|---|
| 1 | primary webserver | 4 to 8 GB RAM |
| 2 | database server | 4 to 8 GB RAM |
| 3 | backup webserver, MySQL slave | 4 GB RAM |
Old Server
After transition, the old will be decommissioned.
Backup Strategy
TBD - What can AU offer us?
