After migrating letsencrypt to a new server, you may encounter with errors like "SSLCertificateFile: file '/etc/letsencrypt/live/example.com/fullchain.pem' does not exist or is empty", this script fix it.

auto-fix-letsencrypt-symlink.sh

#!/bin/bash

domains=`ls /etc/letsencrypt/archive/`
for domain in $domains; do
    max=`ls -v /etc/letsencrypt/archive/${domain} | grep cert | tail -n 1 | grep -oP "\d+"`
    echo "create symlink for ${domain} version ${max}"
    cd /etc/letsencrypt/live/${domain}
    rm cert.pem privkey.pem chain.pem fullchain.pem
    ln -s ../../archive/${domain}/cert${max}.pem cert.pem
    ln -s ../../archive/${domain}/privkey${max}.pem privkey.pem
    ln -s ../../archive/${domain}/chain${max}.pem chain.pem
    ln -s ../../archive/${domain}/fullchain${max}.pem fullchain.pem
done