title: “Openshift prometheus targets”
date: 2020-02-14T18:02:43
slug: openshift-prometheus-targets

Create Rolebinding for prometheus for scraping:

apiVersion: authorization.openshift.io/v1
kind: Role
metadata:
 name: prometheus-k8s
 namespace: emqx-openshift
rules:
- apiGroups:
 - ""
 attributeRestrictions: null
 resources:
 - endpoints
 - nodes
 - pods
 - services
 verbs:
 - get
 - list
 - watch
---
apiVersion: authorization.openshift.io/v1
groupNames: null
kind: RoleBinding
metadata:
 name: prometheus-k8s
 namespace: emqx-openshift
roleRef:
 name: prometheus-k8s
 namespace: emqx-openshift
subjects:
- kind: ServiceAccount
 name: prometheus-k8s
 namespace: openshift-monitoring
userNames:
- system:serviceaccount:openshift-monitoring:prometheus-k8s

Create a Service Monitor

# Please edit the object below. Lines beginning with a '#' will be ignored,
# and an empty file will abort the edit. If an error occurs while saving this file will be
# reopened with the relevant failures.
#
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
 labels:
 k8s-app: emqx-metrics
 name: emqx-metrics
 namespace: openshift-monitoring
spec:
 endpoints:
 - interval: 30s
 port: metrics
 scheme: http
 targetPort: 9091
 jobLabel: k8s-app
 namespaceSelector:
 matchNames:
 - emqx-openshift
 selector:
 matchLabels:
 k8s-app: emqx-metrics

Create a metrics Service

apiVersion: v1
kind: Service
metadata:
 creationTimestamp: "2020-02-14T16:38:26Z"
 labels:
 k8s-app: emqx-metrics
 name: emqx
 namespace: emqx-openshift
 resourceVersion: "810916"
 selfLink: /api/v1/namespaces/emqx-openshift/services/emqx
 uid: 6c740138-4f48-11ea-8568-fa163e8ef4af
spec:
 clusterIP: None
 ports:
 - name: metrics
 port: 9091
 protocol: TCP
 targetPort: 9091
 selector:
 deploymentconfig: emqx-openshift
 sessionAffinity: None
 type: ClusterIP