Add More SWAP Memory to avoid "Memory Allocation Error"

add-swap-memory.sh

# Confirm you have no swap
sudo swapon -s
 
# Allocate 4GB (or more if you wish) in /swapfile
sudo fallocate -l 4G /swapfile
 
# Make it secure
sudo chmod 600 /swapfile
ls -lh /swapfile
 
# Activate it
sudo mkswap /swapfile
sudo swapon /swapfile
 
# Confirm again there's indeed more memory now
free -m
sudo swapon -s
 
# Configure fstab to use swap when instance restart
sudo nano /etc/fstab
 
# Add this line to /etc/fstab, save and exit
/swapfile   none    swap    sw    0   0
 
# Change swappiness to 10, so that swap is used only when 10% RAM is unused
# The default is too high at 60
echo 10 | sudo tee /proc/sys/vm/swappiness
echo vm.swappiness = 10 | sudo tee -a /etc/sysctl.conf