Securing your VM
Our VMs are outfitted with a public IP Address, and are connected to the Internet.
It is imperative that you keep your VMs up-to-date, secure and monitored.
We recommend setting up automatic updates, a firewall, being conservative with permissions, and disabling password authentication (use public keys instead). Please contact us if you need help with this.
You are fully responsible for Virtual Machines you administer.
VMware Tools/Upgrades of the virtual Hardware
We require installation of a system service within VMs for keeping VMware tools up to date and secure to allow orderly communication with the VMs over vSphere, and to ensure stability of our VMware cluster.
An installation guide for these tools is available from VMware here (pdf).
Warning: If the VMware Tools are not installed or problems occur due to out-of-date virtual hardware, then the VM may be shut down during maintenance.
Lifetime of ISOs, Snapshots, and other Disk Images
Mounted ISOs complicate internal shuffling of VMs between cluster servers, which can severely impact the performance of your VM. In addition, snapshotting VMs with mounted ISOs creates a hard dependency on these, only resolvable via deletion of the affected snapshot, which drastically reduces the flexibility of these snapshots.
ISOs should only be mounted briefly, and no snapshots should be made of a VM with a mounted ISO.
We reserve the right to forcibly unmount ISOs or delete such snapshots if these impede necessary cluster management operation.