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...e-Telemetry-Framework/modules/proc_connecting-an-external-dashboard-system.adoc
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[id="connecting-an-external-dashboard-system_{context}"] | ||
= Connecting an external dashboard system | ||
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It is possible to configure third-party visualization tools to connect to the {ProjectShort} Prometheus for metrics retrieval. Access is controlled via an OAuth token, and a ServiceAccount is already created that has (only) the required permissions. A new OAuth token can be generated against this account for the external system to use. | ||
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To use the authentication token, the third-party tool must be configured to supply an HTTP Bearer Token Authorization header as described in RFC6750. Consult the documentation of the third-party tool for how to configure this header. For example link:https://grafana.com/docs/grafana/latest/datasources/prometheus/configure-prometheus-data-source/#custom-http-headers[Configure Prometheus - Custom HTTP Headers] in the _Grafana Documentation_. | ||
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.Procedure | ||
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. Log in to {OpenShift}. | ||
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. Change to the `service-telemetry` namespace: | ||
+ | ||
[source,bash] | ||
---- | ||
$ oc project service-telemetry | ||
---- | ||
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. Create a new token secret for the stf-prometheus-reader service account | ||
+ | ||
[source,bash] | ||
---- | ||
$ oc create -f - <<EOF | ||
apiVersion: v1 | ||
kind: Secret | ||
metadata: | ||
name: my-prometheus-reader-token | ||
namespace: service-telemetry | ||
annotations: | ||
kubernetes.io/service-account.name: stf-prometheus-reader | ||
type: kubernetes.io/service-account-token | ||
EOF | ||
---- | ||
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. Retrieve the token from the secret | ||
+ | ||
[source,bash] | ||
---- | ||
$ TOKEN=$(oc get secret my-prometheus-reader-token -o template='{{.data.token}}' | base64 -d) | ||
---- | ||
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. Retrieve the Prometheus host name | ||
+ | ||
[source,bash] | ||
---- | ||
$ PROM_HOST=$(oc get route default-prometheus-proxy -ogo-template='{{ .spec.host }}') | ||
---- | ||
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. Test the access token | ||
+ | ||
[source,bash] | ||
---- | ||
$ curl -k -H "Authorization: Bearer ${TOKEN}" https://${PROM_HOST}/api/v1/query?query=up | ||
{"status":"success",[...] | ||
---- | ||
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. Configure your third-party tool with the PROM_HOST and TOKEN values from above | ||
+ | ||
[source,bash] | ||
---- | ||
$ echo $PROM_HOST | ||
$ echo $TOKEN | ||
---- | ||
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. The token remains valid as long as the secret exists. You can revoke the token by deleting the secret. | ||
+ | ||
[source,bash] | ||
---- | ||
$ oc delete secret my-prometheus-reader-token | ||
secret "my-prometheus-reader-token" deleted | ||
---- | ||
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.Additional information | ||
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For more information about service account token secrets, see link:https://docs.openshift.com/container-platform/{NextSupportedOpenShiftVersion}/nodes/pods/nodes-pods-secrets.html#nodes-pods-secrets-creating-sa_nodes-pods-secrets[Creating a service account token secret] in the _OpenShift Container Platform Documentation_. |
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