From Sugar Labs
Jump to navigation Jump to search




Freedom and Justice are two twin KVM hosts bought by Sugar Labs in 2012.

Justice is currently our primary VM hosting box, while freedom is a hot-standby running some secondary services in docker containers and backups.


The following machines services are hosted:


  • 2U rack-mountable case
  • Motherboard Supermicro H8SGL (or maybe H8SGL-F)
  • 8-core Opteron 6212 @ 1.7GHz
  • 64GB RAM
  • 2x1TB RAID1


The two servers have SMT management cards from Supermicro with a seriously awful web interface:

Of course you need a separate account. Full KVM support requires the Java browser plugin (yuck!), so we mostly use them for the big reset button in case a server hangs (it happened about once per year).

Use a long, unguessable password, but not one you're also using elsewhere! A few years ago, a backdoor was discovered in this firmware which would reveal all passwords in plaintext with a simple telnet! Also, login uses unencrypted http.

It's also possible to talk to the management card from Linux using ipmitool.

Both cards are running firmware version 3.16, which patched a huge backdoor that would trivially reveal all passwords in plaintext. No kidding. There's a newer firmware version, but attempts to update to it failed with both Chrome and Firefox (error: "413 - Request Entity Too Large"). I suspect a bug in their http POST implementation :-(


  • Justice: Ubuntu 18.04 LTS Bionic
  • Freedom: Ubuntu 18.04 LTS Bionic


Hosted by the MIT Media Lab in server room E15-243.


Network configuration

Justice is globally accessible through public, static IPv4. The IPv6 /64 subnet (6to4) is currently experimental and not associated with AAAA records.

Hosted VMs

All KVM virtual machines are managed by libvirtd.

See Sysadmin/Add virtual machine for creating new VMs.