manage_server_power 0.0.6

Small library for shutting down and starting up local server

This library handles rather specific remote power management scenario.

• Server can be woken up with wake-on-lan (WOL)
• SSH access with public key authentication to the server (for shutting it down)
• Server responds to ping (checking whether the server is running)

Installation:

pip install manage_server_power

or clone the repository and use

python setup.py install

Configuration and notes

On the server side:

• Enable WOL (from BIOS/… settings).
• Take note of relevant MAC address.
• Add new user to server (say, powermanagement).
• Edit sudoers (visudo) and add powermanagement ALL=NOPASSWD: /sbin/poweroff

On the management computer:

• Generate ssh public key pair (ssh-keygen)
• Copy public key to powermanagement user on server (add it to .ssh/authorized_keys)
• Connect to server to check that public key works properly and to add server host key to known_hosts.

Notes:

• At least with some devices/networks, WOL won’t work if broadcast_ip is not set to local network’s broadcast, instead of 255.255.255.255.

Usage

import manage_server_power
sp = manage_server_power.ServerPower(server_hostname="example.com",
                                     server_mac="61:a3:18:1c:84:4b",
                                     server_port=22,  # optional, default is 22
                                     ssh_username="powermanagement",
                                     broadcast_ip="192.168.1.255",  # optional, default is 255.255.255.255
                                     socket_timeout=0.5,  # optional
                                     wol_port=9,  # optional, default is 9
                                     )
print sp.is_alive()
# SERVER_DOWN, SERVER_UP or SERVER_UP_NOT_RESPONDING
print sp.wake_up()  # send WOL packet
print sp.shutdown()  # ssh in and run "sudo poweroff"