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Increasing swap size. Only tested on the ubuntu/trusty64 Vagrant box. CREDIT GOES TO ---> http://jeqo.github.io/blog/devops/vagrant-quickstart/
#!/bin/sh
# size of swapfile in megabytes
swapsize=8000
# does the swap file already exist?
grep -q "swapfile" /etc/fstab
# if not then create it
if [ $? -ne 0 ]; then
echo 'swapfile not found. Adding swapfile.'
fallocate -l ${swapsize}M /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
echo '/swapfile none swap defaults 0 0' >> /etc/fstab
else
echo 'swapfile found. No changes made.'
fi
# output results to terminal
df -h
cat /proc/swaps
cat /proc/meminfo | grep Swap
@jimbasilio

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commented Jan 12, 2016

great script, thanks!!

@Mec-iS

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commented Jan 23, 2016

@fcarrega

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commented Apr 1, 2016

Thanks !

@luizs81

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commented Jul 5, 2016

For me it only worked putting sudo in front of every command and replaced

echo '/swapfile none swap defaults 0 0' >> /etc/fstab

by

echo '/swapfile none swap defaults 0 0' | sudo tee -a /etc/fstab

I'm calling this script from my Vagrantfile.

@sergiopereiraTT

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commented Jul 19, 2016

@luizs81 normally Vagrant runs the provision script with sudo. Maybe you have something like this config.vm.provision :shell, privileged: false, path: "provision.sh", with privileged: false. It could be intentional, though.

@luizs81

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commented Jul 21, 2016

@sergiopereiraTT You are right! I indeed had the privileged: false in my Vagrantfile. Thanks for the heads up.

@nadeemkauser

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commented Mar 4, 2018

You are helpful, your script is very clean. If logged in with vagrant, use sudo infront of script eg sudo ./swapt.sh

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