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dashley |
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#!/bin/bash |
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#------------------------------------------------------------------------------------------------- |
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#$Header$ |
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#------------------------------------------------------------------------------------------------- |
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#This file is part of "Server Scripts, Automatic Maintenance, Cron", a set of scripts for |
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#performing automatic periodic maintenance on a Linux server. |
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#------------------------------------------------------------------------------------------------- |
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#This source code and any program in which it is compiled/used is provided under the MIT License, |
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#reproduced below. |
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#------------------------------------------------------------------------------------------------- |
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#Permission is hereby granted, free of charge, to any person obtaining a copy of |
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#this software and associated documentation files(the "Software"), to deal in the |
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#Software without restriction, including without limitation the rights to use, |
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#copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the |
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#Software, and to permit persons to whom the Software is furnished to do so, |
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#subject to the following conditions : |
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# |
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#The above copyright notice and this permission notice shall be included in all |
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#copies or substantial portions of the Software. |
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# |
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#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE |
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#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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#SOFTWARE. |
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#------------------------------------------------------------------------------------------------- |
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#Master script for synthetic (custom) automatic maintenance of server. |
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#Runs every hour. Paradigm is that cannot run if already running, |
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#so must block concurrent executions. |
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# |
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#If the file with information about the battery status doesn't exist, cannot continue. |
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if [ -f /sys/class/power_supply/BAT1/capacity ] ; then |
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# |
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#If the file contains unfavorable information, cannot continue. |
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if [ `cat /sys/class/power_supply/BAT1/capacity` -gt 60 ] ; then |
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# |
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if [ ! -f /etc/cron.custom/lockfiles/auto_maint_cron_lock ] ; then |
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#If we're here, the lockfile does not exist, and we are clear |
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#to do the maintenance cron. |
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# |
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#Create the lockfile. This way, if we're invoked again |
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#while still running, will bail. |
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touch /etc/cron.custom/lockfiles/auto_maint_cron_lock |
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# |
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#Change to a safe working directory in case something goes wrong, |
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#especially a failed cd followed by a mass delete. |
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cd /root/cronjob_sandbox |
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# |
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#Gather required date information for exec'ing children. To avoid |
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#complexity, can use the lock file for the timestamp. |
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DATE_YEAR4=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%Y` |
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DATE_YEAR2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%y` |
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DATE_MONTH_LONG=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%B` |
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DATE_MONTH_SHORT=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%b` |
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DATE_MONTH2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%m` |
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DATE_DOM2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%d` |
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DATE_DOW_LONG=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%A` |
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DATE_DOW_SHORT=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%a` |
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DATE_DOW_DIGIT=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%w` |
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DATE_HOUR_24=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%H` |
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DATE_HOUR_12=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%I` |
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DATE_AM_PM=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%p` |
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DATE_MIN2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%M` |
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DATE_SEC2=`date --reference=/etc/cron.custom/lockfiles/auto_maint_cron_lock +%S` |
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# |
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#Run child script, sending both standard output and standard error to the temporary |
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#log file. |
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# |
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#The parameters passed to the child are, in order: |
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# 1)Year (4-digit) |
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# 2)Year (2-digit) |
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# 3)Month (long text) |
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# 4)Month (short text) |
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# 5)Month (2-digit) |
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# 6)Day of month (2-digit) |
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# 7)Day of week (long text) |
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# 8)Day of week (short text) |
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# 9)Day of week (single digit) |
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# 10)Hour (24-hour, 2-digit) |
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# 11)Hour (12-hour, 2-digit) |
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# 12)AM or PM, as a text string |
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# 13)Minutes (2-digit) |
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# 14)Seconds (2-digit) |
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# |
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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} ${DATE_SEC2} &>/hl/logs/maint_auto_root/log_in_progress.txt |
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# |
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#Change to a safe working directory in case something goes wrong, |
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#especially a failed cd followed by a mass delete. |
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cd /root/cronjob_sandbox |
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# |
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#Do an atomic move to replace the file that Apache can serve. |
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#The presumed atomic move below should prevent any race conditions |
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#with Apache. My understanding of Unix is that if the log file is open and another file |
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#is moved on top of it, it will stay available until it is closed. The |
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#atomic move should be SSD-friendly. |
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mv -f /hl/logs/maint_auto_root/log_in_progress.txt /hl/logs/maint_auto_root/${DATE_YEAR4}${DATE_MONTH2}${DATE_DOM2}_${DATE_HOUR_24}${DATE_MIN2}${DATE_SEC2}.txt |
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# |
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#We want to be really careful with this next section because of |
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#the recursive rm. Want to be sure the directory exists. |
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# |
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#Maintain about 90 days worth of logs. 24*90=2160. |
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if [ -d /hl/logs/maint_auto_root ] ; then |
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cd /hl/logs/maint_auto_root |
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rm -f `ls -1t | sed -e '2161,$!d'` |
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cd /root/cronjob_sandbox |
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fi |
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# |
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#Change to a safe working directory in case something goes wrong, |
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#especially a failed cd followed by a mass delete. |
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cd /root/cronjob_sandbox |
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# |
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#Remove the lock file. |
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rm /etc/cron.custom/lockfiles/auto_maint_cron_lock |
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fi |
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fi |
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fi |
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#End of script. |
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