3. Trouble shooting¶
This section describes some issues and how to resolve them. If you encounter an issue that is not covered here, see Reporting issues.
3.1. Permission error¶
$ zhmc_prometheus_exporter Permission error. Make sure you have appropriate permissions to read from /etc/zhmc-prometheus-exporter/hmccreds.yaml.
You don’t have permission to read from a YAML file. Change the permissions with
man chmod if you are unfamiliar with it.
3.2. File not found¶
$ zhmc_prometheus_exporter Error: File not found. It seems that /etc/zhmc-prometheus-exporter/hmccreds.yaml does not exist.
A required YAML file (
metrics.yaml) does not exist.
Make sure that you specify paths, relative or absolute, with
if the file is not in
etc/zhmc-prometheus-exporter/. You have to copy the
HMC credentials file from the
examples folder and fill in your own
credentials, see Quickstart for more information.
3.3. Section not found¶
$ zhmc_prometheus_exporter Section metric_groups not found in file /etc/zhmc-prometheus-exporter/metrics.yaml.
At least one of the sections
metrics in your
hmccreds.yaml is missing in its
entirety. See chapter Metric definition file for more information.
3.4. Doesn’t follow the YAML syntax¶
$ zhmc_prometheus_exporter /etc/zhmc-prometheus-exporter/metrics.yaml does not follow the YAML syntax
A YAML file you specified breaks the syntax rules of the YAML specification. If you derive your YAML files from the existing examples (see chapter Quickstart), this error should not occur, you can also check the YAML specification.
3.5. You did not specify¶
$ zhmc_prometheus_exporter You did not specify the IP address of the HMC in /etc/zhmc-prometheus-exporter/hmccreds.yaml.
There is a lot of mandatory information in the two YAML files that might be missing if you improperly filled the credentials file (see Quickstart) or made bad changes to the metrics file (see Metric definition file).
All of these values could in some way be missing or incorrect:
In the credentials YAML file, in the section “metrics”
hmc, the IP address of the HMC (it must be a correct IP address as well!)
userid, a username for the HMC
password, the respective password
In the metrics YAML file, in the section “metric_groups”, for each metric group
prefix, the prefix for the metrics to be exported
fetch, specifying whether the group should be fetched (it must be one of
In the metrics YAML file, in the section “metrics”, for each metric group
The group must also exist in the
percent, specifying whether the metric is a percent value (it must be one of
exporter_name, the name for the exporter (minus the prefix)
exporter_desc, the mandatory description for the exporter
3.6. Time out¶
$ zhmc_prometheus_exporter Time out. Ensure that you have access to the HMC and that you have stored the correct IP address in /etc/zhmc-prometheus-exporter/hmccreds.yaml.
There is a certain timeout threshold if the HMC cannot be found. Check that you have access to the HMC on the IP address that you specified in the HMC credentials file.
3.7. Authentication error¶
$ zhmc_prometheus_exporter Authentication error. Ensure that you have stored a correct user ID-password combination in /etc/zhmc-prometheus-exporter/hmccreds.yaml.
Wrong username or password in the HMC credentials file. Check if you can regularly access the HMC with this username-password combination.
3.8. Warning: Skipping metric or metric group¶
$ zhmc_prometheus_exporter ...: UserWarning: Skipping metric group 'new-metric-group' returned by the HMC that is not defined in the 'metric_groups' section of metric definition file metrics.yaml warnings.warn(warning_str % (metric, filename)) $ zhmc_prometheus_exporter ...: UserWarning: Skipping metric 'new-metric' of metric group 'new-metric-group' returned by the HMC that is not defined in the 'metrics' section of metric definition file metrics.yaml warnings.warn(warning_str % (metric, filename))
If the HMC implements new metrics, or if the metric definition file misses a metric or metric group, the exporter issues ths warning to make you aware of that.