logs - Tomcat7 logrotate: superx_default_xml.log.gz ya existe

log rotate catalina out

Question

Todos los días recibo un correo con el siguiente mensaje de error de mi cron:

/etc/cron.daily/tomcat7:
gzip: /var/log/tomcat7/superx_default_xml.log.gz already exists;    not overwritten
gzip: /var/log/tomcat7/superx.log.gz already exists;    not overwritten
gzip: /var/log/tomcat7/superx-dbforms.log.gz already exists;    not overwritten
gzip: /var/log/tomcat7/saiku.log.gz already exists; not overwritten
gzip: /var/log/tomcat7/superx_default.log.gz already exists;    not overwritten

Instalé Tomcat7 en Ubuntu 14.04 y no configuré nada en logrotate confs. Intenté establecer lo siguiente, pero el error persiste:

/var/log/tomcat7/superx.log {
  copytruncate
  weekly
  rotate 52
  compress
  nomail
  missingok
  create 640 tomcat7 adm
}
/var/log/tomcat7/superx-dbforms.log {
  copytruncate
  weekly
  rotate 52
  compress
  nomail
  missingok
  create 640 tomcat7 adm
}
/var/log/tomcat7/saiku.log {
  copytruncate
  weekly
  rotate 52
  compress
  nomail
  missingok
  create 640 tomcat7 adm
}