Commit 7dab50a3 authored by Scott Moser's avatar Scott Moser

support configuring and installing the Ubuntu fan driver

    config: |
      # fan 240 eth0/16 dhcp eth1/16 dhcp off
      # fan 241 eth0/16 dhcp
    config_path: /etc/network/fan

LP: #1504604
parents e9e86164 86bd318e
......@@ -62,6 +62,7 @@
- reporting: add reporting module for web hook or logging of events.
- NoCloud: fix consumption of vendordata (LP: #1493453)
- power_state_change: support 'condition' to disable or enable poweroff
- ubuntu fan: support for config and installing of ubuntu fan (LP: #1504604)
- open 0.7.6
- Enable vendordata on CloudSigma datasource (LP: #1303986)
# vi: ts=4 expandtab
# Copyright (C) 2015 Canonical Ltd.
# Author: Scott Moser <>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3, as
# published by the Free Software Foundation.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <>.
fan module allows configuration of Ubuntu Fan
Example config:
config: |
# fan 240 eth0/16 dhcp eth1/16 dhcp off
# fan 241 eth0/16 dhcp
config_path: /etc/network/fan
If cloud-init sees a 'fan' entry in cloud-config it will
a.) write 'config_path' with the contents
b.) install the package 'ubuntu-fan' if it is not installed
c.) ensure the service is started (or restarted if was previously running)
from cloudinit import log as logging
from cloudinit import util
from cloudinit.settings import PER_INSTANCE
LOG = logging.getLogger(__name__)
frequency = PER_INSTANCE
'config': None,
'config_path': '/etc/network/fan',
def stop_update_start(service, config_file, content, systemd=False):
if systemd:
cmds = {'stop': ['systemctl', 'stop', service],
'start': ['systemctl', 'start', service],
'enable': ['systemctl', 'enable', service]}
cmds = {'stop': ['service', 'stop'],
'start': ['service', 'start']}
def run(cmd, msg):
return util.subp(cmd, capture=True)
except util.ProcessExecutionError as e:
LOG.warn("failed: %s (%s): %s", service, cmd, e)
return False
stop_failed = not run(cmds['stop'], msg='stop %s' % service)
if not content.endswith('\n'):
content += '\n'
util.write_file(config_file, content, omode="w")
ret = run(cmds['start'], msg='start %s' % service)
if ret and stop_failed:
LOG.warn("success: %s started", service)
if 'enable' in cmds:
ret = run(cmds['enable'], msg='enable %s' % service)
return ret
def handle(name, cfg, cloud, log, args):
cfgin = cfg.get('fan')
if not cfgin:
cfgin = {}
mycfg = util.mergemanydict([cfgin, BUILTIN_CFG])
if not mycfg.get('config'):
LOG.debug("%s: no 'fan' config entry. disabling", name)
util.write_file(mycfg.get('config_path'), mycfg.get('config'), omode="w")
distro = cloud.distro
if not util.which('fanctl'):
service='ubuntu-fan', config_file=mycfg.get('config_path'),
content=mycfg.get('config'), systemd=distro.uses_systemd())
......@@ -53,6 +53,7 @@ cloud_config_modules:
- apt-pipelining
- apt-configure
- package-update-upgrade-install
- fan
- landscape
- timezone
- puppet
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