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Revision 58 - (show annotations) (download)
Sat Oct 29 20:47:33 2016 UTC (6 years, 3 months ago) by dashley
File size: 3722 byte(s)
Initial commit.
1 #!/bin/bash
2 #-------------------------------------------------------------------------------------------------
3 #$Header$
4 #-------------------------------------------------------------------------------------------------
5 #This file is part of "Server Scripts, Automatic Maintenance, Cron", a set of scripts for
6 #performing automatic periodic maintenance on a Linux server.
7 #-------------------------------------------------------------------------------------------------
8 #This source code and any program in which it is compiled/used is provided under the MIT License,
9 #reproduced below.
10 #-------------------------------------------------------------------------------------------------
11 #Permission is hereby granted, free of charge, to any person obtaining a copy of
12 #this software and associated documentation files(the "Software"), to deal in the
13 #Software without restriction, including without limitation the rights to use,
14 #copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the
15 #Software, and to permit persons to whom the Software is furnished to do so,
16 #subject to the following conditions :
17 #
18 #The above copyright notice and this permission notice shall be included in all
19 #copies or substantial portions of the Software.
20 #
21 #THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 #IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 #FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
24 #AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 #LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 #OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
27 #SOFTWARE.
28 #-------------------------------------------------------------------------------------------------
29 #Powers off my Lenovo 11e server if the battery is too depleted. Designed to be run every 1-5
30 #minutes. It has its own cron entry (in /etc/crontab) because there is no guarantee that the
31 #Lenovo 11e built-in battery is robust enough to make it through the regular maintenance cron, so
32 #can't safely put this logic in there. Between interrupting maintenance tasks and a hard power
33 #fail, the interruption is less of a threat than a hard power fail.
34 #----------------------------------------------------------------------------------------------------
35 #Delay for 120 seconds if the power_fail_occurred lockfile exists, indicating that we are restarting
36 #after a previous power fail. The reason for the delay is to guard against a missing battery or
37 #a faulted battery -- if this occurs, it would be very hard to get the server running again without
38 #rescue media. The 120 seconds gives time to rename this script or kill the cron process(es) or
39 #something so the system can be started and will not power off.
40 if [ -f /etc/cron.custom/lockfiles/power_failure_occurred ] ; then
41 sleep 120
42 rm /etc/cron.custom/lockfiles/power_failure_occurred
43 fi
44 #----------------------------------------------------------------------------------------------------
45 #If the file with information doesn't exist, shutdown.
46 if [ ! -f /sys/class/power_supply/BAT1/capacity ] ; then
47 touch /etc/cron.custom/lockfiles/power_failure_occurred
48 poweroff
49 fi
50 #----------------------------------------------------------------------------------------------------
51 #If the file contains unfavorable information, shutdown.
52 if [ `cat /sys/class/power_supply/BAT1/capacity` -lt 30 ] ; then
53 touch /etc/cron.custom/lockfiles/power_failure_occurred
54 poweroff
55 fi
56 #----------------------------------------------------------------------------------------------------

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