https://security.stackexchange.com/questions/104139/generate-csr-from-existing-certificate
openssl x509 -x509toreq -in $SITENAME.crt -signkey $SITENAME.key -out $SITENAME-new.csr
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https://security.stackexchange.com/questions/104139/generate-csr-from-existing-certificate
openssl x509 -x509toreq -in $SITENAME.crt -signkey $SITENAME.key -out $SITENAME-new.csr