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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: 6875 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 #Master script for synthetic (custom) automatic maintenance of server.
30 #Runs every hour. Paradigm is that cannot run if already running,
31 #so must block concurrent executions.
32 #
33 #If the file with information about the battery status doesn't exist, cannot continue.
34 if [ -f /sys/class/power_supply/BAT1/capacity ] ; then
35 #
36 #If the file contains unfavorable information, cannot continue.
37 if [ `cat /sys/class/power_supply/BAT1/capacity` -gt 60 ] ; then
38 #
39 if [ ! -f /etc/cron.custom/lockfiles/auto_maint_cron_lock ] ; then
40 #If we're here, the lockfile does not exist, and we are clear
41 #to do the maintenance cron.
42 #
43 #Create the lockfile. This way, if we're invoked again
44 #while still running, will bail.
45 touch /etc/cron.custom/lockfiles/auto_maint_cron_lock
46 #
47 #Change to a safe working directory in case something goes wrong,
48 #especially a failed cd followed by a mass delete.
49 cd /root/cronjob_sandbox
50 #
51 #Gather required date information for exec'ing children. To avoid
52 #complexity, can use the lock file for the timestamp.
53 DATE_YEAR4=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%Y`
54 DATE_YEAR2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%y`
55 DATE_MONTH_LONG=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%B`
56 DATE_MONTH_SHORT=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%b`
57 DATE_MONTH2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%m`
58 DATE_DOM2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%d`
59 DATE_DOW_LONG=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%A`
60 DATE_DOW_SHORT=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%a`
61 DATE_DOW_DIGIT=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%w`
62 DATE_HOUR_24=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%H`
63 DATE_HOUR_12=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%I`
64 DATE_AM_PM=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%p`
65 DATE_MIN2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%M`
66 DATE_SEC2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%S`
67 #
68 #Run child script, sending both standard output and standard error to the temporary
69 #log file.
70 #
71 #The parameters passed to the child are, in order:
72 # 1)Year (4-digit)
73 # 2)Year (2-digit)
74 # 3)Month (long text)
75 # 4)Month (short text)
76 # 5)Month (2-digit)
77 # 6)Day of month (2-digit)
78 # 7)Day of week (long text)
79 # 8)Day of week (short text)
80 # 9)Day of week (single digit)
81 # 10)Hour (24-hour, 2-digit)
82 # 11)Hour (12-hour, 2-digit)
83 # 12)AM or PM, as a text string
84 # 13)Minutes (2-digit)
85 # 14)Seconds (2-digit)
86 #
87 nice /etc/cron.custom/scripts/master_logged ${DATE_YEAR4} ${DATE_YEAR2} ${DATE_MONTH_LONG} ${DATE_MONTH_SHORT} ${DATE_MONTH2} ${DATE_DOM2} ${DATE_DOW_LONG} ${DATE_DOW_SHORT} ${DATE_DOW_DIGIT} ${DATE_HOUR_24} ${DATE_HOUR_12} ${DATE_AM_PM} ${DATE_MIN2} ${DATE_SEC2} &>/hl/logs/maint_auto_root/log_in_progress.txt
88 #
89 #Change to a safe working directory in case something goes wrong,
90 #especially a failed cd followed by a mass delete.
91 cd /root/cronjob_sandbox
92 #
93 #Do an atomic move to replace the file that Apache can serve.
94 #The presumed atomic move below should prevent any race conditions
95 #with Apache. My understanding of Unix is that if the log file is open and another file
96 #is moved on top of it, it will stay available until it is closed. The
97 #atomic move should be SSD-friendly.
98 mv -f /hl/logs/maint_auto_root/log_in_progress.txt /hl/logs/maint_auto_root/${DATE_YEAR4}${DATE_MONTH2}${DATE_DOM2}_${DATE_HOUR_24}${DATE_MIN2}${DATE_SEC2}.txt
99 #
100 #We want to be really careful with this next section because of
101 #the recursive rm. Want to be sure the directory exists.
102 #
103 #Maintain about 90 days worth of logs. 24*90=2160.
104 if [ -d /hl/logs/maint_auto_root ] ; then
105 cd /hl/logs/maint_auto_root
106 rm -f `ls -1t | sed -e '2161,$!d'`
107 cd /root/cronjob_sandbox
108 fi
109 #
110 #Change to a safe working directory in case something goes wrong,
111 #especially a failed cd followed by a mass delete.
112 cd /root/cronjob_sandbox
113 #
114 #Remove the lock file.
115 rm /etc/cron.custom/lockfiles/auto_maint_cron_lock
116 fi
117 fi
118 fi
119 #End of script.

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