AH00558: apache2: Could not reliably determine the server's fully qualified domain name 에러 해결하기 문제의 에러AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1. Set the 'ServerName' directive globally to suppress this message 해당 문제 해결하기$sudo echo "ServerName $(cat /etc/hostname)" >> /etc/apache2/apache2.conf 문제 해결 아파치 재시작$sudo service apache2 restart