前提：在Kubernetes集群中部署好Prometheus，我这里是采用Prometheus-Operator方式进行部署的。
(1)首先创建RBAC
apiVersion: v1
kind: ServiceAccount
metadata:
name: service-level-operator
namespace: monitoring
labels:
app: service-level-operator
component: app
—
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: service-level-operator
labels:
app: service-level-operator
component: app
rules:
# Register and check CRDs.
– apiGroups:
– apiextensions.k8s.io
resources:
– customresourcedefinitions
verbs:
– "*"
# Operator logic.
– apiGroups:
– monitoring.spotahome.com
resources:
– servicelevels
– servicelevels/status
verbs:
– "*"
—
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: service-level-operator
subjects:
– kind: ServiceAccount
name: service-level-operator
namespace: monitoring
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: service-level-operator
（2）然后创建Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
name: service-level-operator
namespace: monitoring
labels:
app: service-level-operator
component: app
spec:
replicas: 1
selector:
matchLabels:
app: service-level-operator
component: app
strategy:
rollingUpdate:
maxUnavailable: 0
template:
metadata:
labels:
app: service-level-operator
component: app
spec:
serviceAccountName: service-level-operator
containers:
– name: app
imagePullPolicy: Always
image: quay.io/spotahome/service-level-operator:latest
ports:
– containerPort: 8080
name: http
protocol: TCP
readinessProbe:
httpGet:
path: /healthz/ready
port: http
livenessProbe:
httpGet:
path: /healthz/live
port: http
resources:
limits:
cpu: 220m
memory: 254Mi
requests:
cpu: 120m
memory: 128Mi
（3）创建service
apiVersion: v1
kind: Service
metadata:
name: service-level-operator
namespace: monitoring
labels:
app: service-level-operator
component: app
spec:
ports:
– port: 80
protocol: TCP
name: http
targetPort: http
selector:
app: service-level-operator
component: app
（4）创建prometheus serviceMonitor
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
name: service-level-operator
namespace: monitoring
labels:
app: service-level-operator
component: app
prometheus: myprometheus
spec:
selector:
matchLabels:
app: service-level-operator
component: app
namespaceSelector:
matchNames:
– monitoring
endpoints:
– port: http
interval: 10s
