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toshihirock/createSwapOnEC2.sh

Created February 28, 2015 12:25
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createSwapOnEC2.sh
WAPFILENAME=/swap.img
MEMSIZE=`cat /proc/meminfo | grep MemTotal | awk '{print $2}'`
if [ $MEMSIZE -lt 2097152 ]; then
SIZE=$(($MEMSIZE * 2))k
elif [ $MEMSIZE -lt 8388608 ]; then
SIZE=${MEMSIZE}k
elif [ $MEMSIZE -lt 67108864 ]; then
SIZE=$(($MEMSIZE / 2))k
else
SIZE=4194304k
fi
fallocate -l $SIZE $SWAPFILENAME && mkswap $SWAPFILENAME && swapon $SWAPFILENAME
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