Re: certificate monitoring

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Sorry, but I can't resist sharing my certificate monitoring script!

https://github.com/szepeviktor/debian-server-tools/blob/master/monitoring/c=
ert-expiry.sh


Id=C3=A9zem/Quoting [email protected]:

> Hello Marco,
>
> as Lutz mentioned, Monit doesn't allow checking the certificate file itse=
lf.
>
> Checking the certificate validity on SMTP port with STARTTLS is=20=20
>=20possible though, and provides also the certificate integration=20=20
>=20testing, which I think is better than testing the certificate file=20=
=20
>=20only: if the SMTP will be configured for a different certificate=20=20
>=20file (e.g. old filename), or the SMTP server won't be restarted=20=20
>=20after the certificate was updated, the port test won't pass.=20=20
>=20Checking the file only is error-prone, I think.
>
> Best regards,
> Martin
>
>
>> On 24. 5. 2026, at 10:14, Marco Moock <[email protected]> wrote:
>>
>> Am 24.05.26 um 09:42 schrieb Lutz Mader via This is the general=20=20
>>=20mailing list for monit:
>>
>>> sorry, you cannot validate a certificate using a service check file.
>>> But, that sounds like a useful feature.
>>> You should describe your request in more detail and submit it as a
>>> feature suggestion/request.
>>
>> My idea was just to run openssl (or similar) to check the validity=20=20
>>=20and then provide a way to alert, like it exists for disk usage etc.
>>
>>
>>> https://mmonit.com/monit/documentation/monit.html#File
>>
>> This feature could be used for a workaround with a script that=20=20
>>=20creates a file if the validity is too low etc.
>>
>>
>> --
>> Gru=C3=9F
>> Marco
>> Muell und Spam bitte an [email protected]
>> <OpenPGP_0x559E1A331A46B463.asc>



SZ=C3=89PE Viktor, webes alkalmaz=C3=A1s =C3=BCzemeltet=C3=A9s / Running yo=
ur application
https://github.com/szepeviktor/debian-server-tools/blob/master/CV.md
~~~
=C3=BCgyelet =F0=9F=8C=B6=EF=B8=8F hotline: +36-20-4242498  [email protected]  =
skype: szepe.viktor
Budapest, III. ker=C3=BClet





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