$ vi /etc/logrotate.d/tomcat

/opt/entermediadb/tomcat/logs/catalina.out {  
  copytruncate  
  daily  
  rotate 7
  compress  
  missingok  
  dateext
  size 100m  
} 

specify the path to the log file. 
copytruncate – creates a copy of the log file and then truncates the original to an empty file so that the service can keep on logging uninterrupted.
daily – rotates the catalina.out daily.
rotate – keeps at most 7 log files. 
compress – create a gzip compressed file of the rotated files.
missingok – suppresses error messages if the file does not exist. 
dateext – add the date to the filename of the archived log file.
size – rotates if the size of catalina.out is bigger than 100m.  

/usr/sbin/logrotate /etc/logrotate.conf 

2 * * * * /usr/sbin/logrotate /etc/mylogrotate.d/tomcat