If your issue is simply that you are in the process of migrating
node_exporter configs from http to https, I'd suggest you configure the
required scheme for each target using labels
<https://prometheus.io/docs/prometheus/latest/configuration/configuration/#relabel_config>
in
the service discovery:
- labels:
__scheme__: http
targets:
- foo:9100
- bar:9100
- labels:
__scheme__: https
targets:
- baz:9100
- quz:9100
Then move the targets from one section to the other as you migrate them. Or
at worst, simply scrape all targets twice, and let one fail and the other
succeed. When the migration is complete, remove the http targets.
(Obviously you'll want to tweak your alerting rules in this case)
If you really want to try https first and fall back to http for all targets
(on the same port? on different ports?) then I don't think Prometheus can
do this. But you could write your own proxy, which makes connection type A
and then falls back to connection type B, and scrape the proxy. Pass the
connection parameters (e.g. target address) as part of the URL.
On Tuesday, 25 February 2025 at 14:54:19 UTC mohan garden wrote:
> Hi All,
> I am trying to secure the node exporter end points using self signed TLS
> certificates, here are the configurations:
> a) node exporter - tls_server_config:
> cert_file: node_exporter.crt
> key_file: node_exporter.key
>
> b) Prometheus - scrape_configs: - job_name: 'prometheus' scheme: https
> tls_config: ca_file: prometheus.crt file_sd_configs: - files: -
> /data/inventory.yml
> is it possible to configure the scrape_configs in a way where in if the
> https collection is not possible then prometheus falls back to http for
> same job/target?
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