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Unused space used occupied by alerts_v*.db files is reclaimed every day at midnight localtime. This should shrink the file automatically. The reason for a huge size of the file can be:
- Very large number of alerts
- Old ntopng version which is not reclaiming space
- ntopng not running at midnight localtime

By the way. It is safe to turn ntopng off and delete the file manually, if you can afford losing generated alerts.

Simone

> On 14 Sep 2020, at 17:55, Ken Kirchner <ken@kirchners.com> wrote:
>
> My /var/lib/ntopng/ directory seems to be consuming 8.1GB of space. Of that, 6.2GB seems to be in the /1/alerts/alerts_v20.db file. Is this just a poorly named file that contains more than just alerts, or do I have some kind of serious problem?
>
> -Ken
>
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Thank you, Simone. I am going to rebuild these boxes anyway, so I went ahead and purged the data. I will keep an eye on this one to see if it swells up quickly compared to my others. These have been through several upgrades so no telling what I might have messed up.

-Ken


> On Sep 15, 2020, at 12:35 AM, Simone Mainardi <mainardi@ntop.org> wrote:
>
>
> Unused space used occupied by alerts_v*.db files is reclaimed every day at midnight localtime. This should shrink the file automatically. The reason for a huge size of the file can be:
> - Very large number of alerts
> - Old ntopng version which is not reclaiming space
> - ntopng not running at midnight localtime
>
> By the way. It is safe to turn ntopng off and delete the file manually, if you can afford losing generated alerts.
>
> Simone
>
>> On 14 Sep 2020, at 17:55, Ken Kirchner <ken@kirchners.com> wrote:
>>
>> My /var/lib/ntopng/ directory seems to be consuming 8.1GB of space. Of that, 6.2GB seems to be in the /1/alerts/alerts_v20.db file. Is this just a poorly named file that contains more than just alerts, or do I have some kind of serious problem?
>>
>> -Ken
>>
>> _______________________________________________
>> Ntop mailing list
>> Ntop@listgateway.unipi.it
>> http://listgateway.unipi.it/mailman/listinfo/ntop
>
> _______________________________________________
> Ntop mailing list
> Ntop@listgateway.unipi.it
> http://listgateway.unipi.it/mailman/listinfo/ntop

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