Forum Discussion
NimbostratusChanging the default ASM DB log size and the default number of entries
Hello,
Is it possible to change/reduce the default ASM DB log size and the default number of entries.
We are running BIG-IP 12.1.2 and I found on devcentral two answers from F5 saying that default values are
- 2 GB for the DB size or 3 million entries (depending on which one is reached first)
https://devcentral.f5.com/questions/asm-request-event-correlation-differencies
https://devcentral.f5.com/questions/asm-logging
Thanks
- CharlesCS
Cirrus
The ASM event log is a MySQL database that is created when ASM is first provisioned on a BIG-IP system. As such, its size and capacity are fixed.
samstepCirrocumulus
Why would you want to reduce it? it is not a 'default' size but a maximum one and its limits are defined by the fact that it is stored in mySQL database built-into ASM. I think you might be confusing it with asm.log file on the file system
JT,
While it is possible to increase the amount of requests that can be stored in the mysql db (either the number of requests or the size of the db itself), it's not something that we'd recommend as it can cause performance impact (particularly with the GUI in loading all the requests). If you see more requests being logged than the specified limit, then we'd recommend going with using remote storage.
Ashwin
Jad_Tabbara__J1Cirrostratus
Hello Ashwin,
Thanks for you answer. Based on links that I shared in my question. other "F5 members" have already clarified the fact that it is not recommended to increase theses values.
But my question was to decrease it. Indeed, my hope is to change these values for example from 2 GB to 1 GB and from 3 million events to 1.5.
Please share the procedure.
Regards
- Jad_Tabbara__J1
Hello Ashwin,
Please could you share how to do it ?
Thanks
Jerry_LeesEmployee
I realize this is old, but could you clarify why you would like to decrease the size? Most people end up wanting to increase thee numbers when they ask about database sizes.
I can't think of a reason to make it smaller other than a system is running low on disk space, honestly, that's a completely different problem too. One that an additional 1Gb isn't going to solve long term.
Ashwin_VenkatJT,
While it is possible to increase the amount of requests that can be stored in the mysql db (either the number of requests or the size of the db itself), it's not something that we'd recommend as it can cause performance impact (particularly with the GUI in loading all the requests). If you see more requests being logged than the specified limit, then we'd recommend going with using remote storage.
Ashwin
- Jad_Tabbara__J1
Hello Ashwin,
Thanks for you answer. Based on links that I shared in my question. other "F5 members" have already clarified the fact that it is not recommended to increase theses values.
But my question was to decrease it. Indeed, my hope is to change these values for example from 2 GB to 1 GB and from 3 million events to 1.5.
Please share the procedure.
Regards
- Jad_Tabbara__J1
Hello Ashwin,
Please could you share how to do it ?
Thanks
- Jerry_Lees
I realize this is old, but could you clarify why you would like to decrease the size? Most people end up wanting to increase thee numbers when they ask about database sizes.
I can't think of a reason to make it smaller other than a system is running low on disk space, honestly, that's a completely different problem too. One that an additional 1Gb isn't going to solve long term.
- Jeon_Byeong_Jun
how did you solve this case? i'm trying to change log size for asm. do you share soltion?
