Increase Swap size - digitalocean droplet
Set the swap size to 512M and after a while mysql failed to start. Tail the /var/log/mysql/error.log and found that innodb had memory-related error. For now I solved it by increasing the swapfile size. 1. Cannot swapoff since there was not enough memory 2. So I create new swapfile first and use it and then delete the old one and edit the /etc/fstab file sudo fallocate -l 4G /swapfilenew sudo mkswap /swapfilenew sudo swapon /swapfilenew sudo swapoff /swapfile # < delete old swap sudo rm /swapfile sudo swapon -s # check to make sure Edit /etc/fstab to turn on swap when reboot. Change from /swapfile to /swapfilenew