Recurring disk space issues-i5800

• This is a most common issue in physical platform that working with many modules (LTM,APM,GTM,ASM..). So you can resolve this issue by simple things.
• You can check the free space in device and increase the size of mounts(/var,/shared..). 3.1 GB is usual /var size, and it should increase as per your need.
• Also, you can upgrade the platform to 16.x version (it will automatically increase the size to 50% - to 4.7GB)
• Main reason of increasing /var size is backup files, pcap files. you can setup an external backup storage mechanism (if bigiq there, you can schedule backup to BIG IQ).
• You can configure mount monitoring to get alerts.

 You can go through below link for doing it. Thanks 

adding link - The /var partition size is increased by 50% in BIG-IP 16.0.0 and later (f5.com)

Extending /var disk space on appliances. (f5.com)

Thanks, let me try that.

We faced similar issues on our VCMP host a couple of month ago. The solution was to backup configuraiton, recreate a new guest and restore the configuration. It seems that long living instance that have been upgraded several times conserve old files that accumulate over the time and use disk space.

check which file or subfolders has big size.
get help fro linux/unix admin if needed.

if it is file /var/log/ltm, check the file whether there are lots of log entries,
they minght be caused by log command in irules script.