Log disk usage still higher than 80% after logrotate and 24 times log deletion

i get the following warning message on my LTM Jun 30 17:25:24 XXXXXXX emerg alertd[7889]: 01100048:0: Log disk usage still higher than 80% after logrotate and 24 times log deletion

 

i checked my disk

 

df -h

Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg--db--sda-set.2.root380M 212M 149M 59% / /dev/mapper/vg--db--sda-set.2._config 3.0G 75M 2.8G 3% /config /dev/mapper/vg--db--sda-set.2._usr2.5G 1.8G 533M 78% /usr /dev/mapper/vg--db--sda-set.2._var3.0G 371M 2.5G 13% /var /dev/mapper/vg--db--sda-dat.share.130G 3.6G 25G 13% /shared /dev/mapper/vg--db--sda-dat.log.16.9G 6.5G 44M 100% /var/log none 7.9G 916K 7.9G 1% /dev/shm none 7.9G 36M 7.9G 1% /shared/rrd.1.2 none 7.9G 14M 7.9G 1% /var/tmstat none 7.9G 1.5M 7.9G 1% /var/run prompt 4.0M 28K 4.0M 1% /var/prompt none 7.9G 0 7.9G 0% /var/loipc

 

how do i go about and resolve this issue by make controlling the size or keeping record for only a time period. in fact what will best practice here

 

thank you