AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error.
Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.
こんなのが出たので調査。
<VirtualHost *:80>
ServerName demo
DocumentRoot "/srv/demo/"
ServerAdmin root@localhost
CustomLog logs/access.log common
ErrorLog logs/error.log
+ LogLevel debug
</VirtualHost>
/var/log/httpd/error.log にログが出力される。