Hi
Probably not with the blackbox_exporter. Although you can upgrade TCP
connections to TLS using starttls=true in the query_response, as far as I
can see this is only intended to be used for line-based protocols since the
blackbox_exporter will always append a newline to the data (there is a
similar issue here:
https://github.com/prometheus/blackbox_exporter/issues/295). So you could
create a blackbox_exporter module using something like
postgres:
prober: tcp
tcp:
query_response:
- send: !!binary AAAACATSFi8=
- starttls: true
to send a startup packet (which basically sends 0x00 0x00 0x00 0x08 0x04
0xd2 0x16 0x2f to postgres). But since the blackbox_exporter always appends
a newline, postgres will receive 0x00 0x00 0x00 0x08 0x04 0xd2 0x16 0x2f
0x0a and throw an error.
Cheers,
Reto
On Thursday, June 3, 2021 at 8:13:11 AM UTC+2 [email protected] wrote:
> Hi,
>
> Is there any way to get metrics out of postgres ssl certs? AFAIK black box
> exporter can not do it because of the way postgres doing starttls.
>
> /Ihor
>
>
>
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