On Thursday, 26 June 2025 at 15:42:36 UTC+1 Joel Djojotaroeno wrote:
I have two prometheus.yml files:
/home/rpbgintern2/prometheus.yml
/etc/prometheus/prometheus.yml
And two snmp.yml files:
/home/rpbgintern2/snmp_exporter-0.26.0.linux-amd64/snmp.yml
/home/rpbgintern2/snmp/snmp.yml
I don't know if multiple yml files are causing this error.
No. But you do need to work out which is being used.
This depends on how you are starting the services. Are you using systemd
services perhaps?
If you're not sure, then use
ps auxwww | grep prometheus
ps auxwww | grep snmp_exporter
to see what flags you're running them with.
For prometheus, the config file is specified by the --config.file argument.
If you don't specify it, it will read "prometheus.yml" in whatever the
current working directory is when prometheus is started.
snmp_exporter also has a --config.file argument; I believe it defaults to
"snmp.yml" in the current working directory. It can be used with a
wildcard, e.g. '--config.file=/etc/prometheus/snmp.d/*.yml'.
This is very useful because you can provide multiple files: the supplied
snmp.yml, and then a separate file (say "auth.yml") with just your
site-specific authentication parameters. For example:
auths:
test_v2:
version: 2
community: Testing123
test_v3:
version: 3
security_level: authNoPriv
username: admin
auth_protocol: SHA
password: Testing123
test_v3_priv:
version: 3
security_level: authPriv
username: admin
auth_protocol: SHA
password: Testing123
priv_protocol: AES
priv_password: VerySecret
If you're polling snmp_exporter with parameter public_v1, then this auth
needs to be defined. The supplied snmp.yml does define this, so perhaps
your snmp_exporter is not picking up *any* configuration files? That will
be down to the --config.file parameter you may or may not be passing.
Either that, or there's a typo somewhere. I note that your error message
complains about "public_v1_'' with a trailing underscore.
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