How to add swap space on Linux
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My server is running out of memory. How can I add swap space without reinstalling the system?
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fatima_dev
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1 Answer
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Create swap file
# Create 4GB swap file
sudo fallocate -l 4G /swapfile
# Or using dd
sudo dd if=/dev/zero of=/swapfile bs=1G count=4
# Set correct permissions
sudo chmod 600 /swapfile
# Set up swap area
sudo mkswap /swapfile
# Enable swap
sudo swapon /swapfileMake permanent
# Add to /etc/fstab
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
# Verify
free -h
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