Power Control

You can control the power to your slice using the power buttons in the panel.

Note

It is recommended that you powerdown and reboot your slices directly, using their respective commands over SSH:

• For poweroff, using poweroff or shutdown commands

• For reboot, the reboot commmand.

Details as to why are described below.

Power Off

Upon clicking the Power Off button, the system will issue an ACPI (“soft”) power down request. It will wait 90 seconds for the slice to report it has cleanly shutdown. If it does not, the system will issue a hard shutdown, which is the equivalent of pulling the power plug.

This is why we recommend you issue the commands over SSH instead: there is no time limit in that case, so you can wait as long as you need (and possibly watch the shutdown over the Console as well, by opening it prior to clicking Power Off).

But the panel button is still required for cases where a slice might be unreachable, e.g. a slice is hard locked. Or, someone with panel access but not direct SSH access needs to power cycle, etc.

Power On

Upon clicking the Power On button, the system will issue an ACPI poweron request and wait for the slice to report success.

Note

The status reflected on the panel is what is reported by the slice; the system only knows if your slice is in a running state or not. But your slice might still be unreachable for some other reason, such as SSH did not start or a rogue firewall rule, etc.

The Console is often useful in these cases.

Reboot

Upon clicking the Reboot button, the system will issue an ACPI reboot request and wait for the slice to report success. This is different than Power Off in that there is no time limit; from the perspective of the host the slice remains in a running state. In cases where a slice hard locks during reboot, you can use the Power Off button to force a hard shutdown, which is the equivalent of pulling the power plug.