cleaning up memuse

scaledown_check.sh

@@ -27,15 +27,11 @@ echo "metric sysload_avg float" $sysloadavg
 
 
 # Setting proper values for average memory usage from last hour
-memfree=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $2}'`
-memused=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $3}'`
-memtotal=`awk -v memfree=$memfree -v memused=$memused 'BEGIN { print memfree + memused }'`
-buffers=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $5}'`
-cached=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $6}'`
-nocache=`awk -v memused=$memused -v buffers=$buffers -v cached=$cached 'BEGIN { print memused - ( buffers + cached ) }'`
+memavg=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' '`
+
 
 # Find use percentage
-mempercentage=`awk -v nocache=$nocache -v memtotal=$memtotal 'BEGIN { print nocache * 100 / memtotal }'`
+mempercentage=`echo $memavg | awk '{ print ( $3 - ( $5 + $6 ) ) * 100 / ( $2 + $3 ) }'`
 
 # Print metric memory
 echo "metric percent_memory_used float" $mempercentage

scaledown_check.sh.longver

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+# Example criteria :
+#
+#if (metric['sysload_avg'] < 2.0 && metric['percent_memory_used'] < 30 && metric['percent_maxclients'] < 30) {
+#  return new AlarmStatus(CRITICAL, 'Auto Scale servers have been over provisioned. Auto #scale group is being scaled down!');
+#}
+#
+#return new AlarmStatus(OK, 'Auto Scale servers are being used too heavily for safe scale down.');
+
+########################################################################################################################
+
+
+# Getting time parameters for sar command
+end=`date | awk '{ print $4}'`
+start=`date -d "1 hour ago" | awk '{ print $4}'`
+
+
+# Find average sysload from last hour
+sysloadavg=`sar -q -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $4}'`
+
+# Print metric system load
+echo "metric sysload_avg float" $sysloadavg
+
+
+########################################################################################################################
+
+
+# Setting proper values for average memory usage from last hour
+memfree=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $2}'`
+memused=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $3}'`
+memtotal=`awk -v memfree=$memfree -v memused=$memused 'BEGIN { print memfree + memused }'`
+buffers=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $5}'`
+cached=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $6}'`
+nocache=`awk -v memused=$memused -v buffers=$buffers -v cached=$cached 'BEGIN { print memused - ( buffers + cached ) }'`
+
+# Find use percentage
+mempercentage=`awk -v nocache=$nocache -v memtotal=$memtotal 'BEGIN { print nocache * 100 / memtotal }'`
+
+# Print metric memory
+echo "metric percent_memory_used float" $mempercentage
+
+
+########################################################################################################################
+
+
+# Find the number of active Apache clients
+activeconn=`pgrep -f "httpd|apache2" | wc -l`
+
+# Find the MaxClients setting from Apache config file
+if [ -f /etc/apache2/apache2.conf ]
+then
+        maxclients=`grep MaxClients /etc/apache2/apache2.conf | grep -v '#' | head -n 1 | awk '{print $2}'`
+elif [ -f /etc/httpd/conf/httpd.conf ]
+then
+        maxclients=`grep MaxClients /etc/httpd/conf/httpd.conf | grep -v '#' | head -n 1 | awk '{print $2}'`
+fi
+
+# Find use percentage
+maxclientuse=`awk -v ac=$activeconn -v mc=$maxclients 'BEGIN { print ac * 100 / mc }'`
+
+# Print metric maxclients
+echo "metric percent_maxclients float" $maxclientuse
+

scaledown_check_gen.sh

@@ -27,15 +27,10 @@ echo "metric sysload_avg float" $sysloadavg
 
 
 # Setting proper values for average memory usage from last hour
-memfree=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $2}'`
-memused=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $3}'`
-memtotal=`awk -v memfree=$memfree -v memused=$memused 'BEGIN { print memfree + memused }'`
-buffers=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $5}'`
-cached=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' ' | awk '{print $6}'`
-nocache=`awk -v memused=$memused -v buffers=$buffers -v cached=$cached 'BEGIN { print memused - ( buffers + cached ) }'`
+memavg=`sar -r -s $start -e $end | grep Average | tail -n 1 | tr -s ' '`
 
 # Find use percentage
-mempercentage=`awk -v nocache=$nocache -v memtotal=$memtotal 'BEGIN { print nocache * 100 / memtotal }'`
+mempercentage=`echo $memavg | awk '{ print ( $3 - ( $5 + $6 ) ) * 100 / ( $2 + $3 ) }'`
 
 # Print metric memory
 echo "metric percent_memory_used float" $mempercentage