Fastest way to add swap memory

Swap space in Linux is used when the amount of physical memory (RAM) is full. When the system needs more memory resources and the RAM is full, inactive pages in memory are moved to the swap space. Swap Memory can be very useful for Steem and EOS node administrators as it can prevent your server from crashing.

I recommend using at least 1gb of Swap Memory, specially if you have a fast SSD drive. So, one of the first things I do when I set up a server is run this little script that installs 1gb of RAM in a couple of seconds.

First, create a file called swap.sh:

sudo nano swap.sh

Then paste this code inside it:

cd
sudo fallocate -l 1G /swapfile
ls -lh /swapfile
sudo chmod 600 /swapfile
ls -lh /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
free -h
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
sudo sysctl vm.swappiness=10
echo 'vm.swappiness=10' | sudo tee -a /etc/sysctl.conf

Exit nano editor with Ctrl X and save it with Y, then make the file executable:

chmod 755 swap.sh

Run the script with:

sudo ./swap.sh

The output should look something like this:

And thats it, you are all set with your new swap space.

Code in Gist