need to apply the prometheus rules from alertmanager repo in k8s - kubernetes

Question

Have 2 gitlab repos:
=> gitlab a
=> gitlab b
gitlab a - contains stateful set and pod of prometheus and prometheus pushgateway
gitlab b - conatins the alertmanager service and alermanager pod and prometheus rules.
all the pods and containers are up and running.
am trying to apply the prometheus-rules to the prometheus stateful set.
prometheusRule.png
need to apply the Kind:prometheus rule to stateful set of prometheus.
can someone help.
applied rules yaml :
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
labels:
prometheus: k8s
role: alert-rules
name: prometheus-k8s-rules
namespace: cmp-monitoring
spec:
groups:
- name: node-exporter.rules
rules:
- expr: |
count without (cpu) (
count without (mode) (
node_cpu_seconds_total{job="node-exporter"}
)
)
record: instance:node_num_cpu:sum
- expr: |
1 - avg without (cpu, mode) (
rate(node_cpu_seconds_total{job="node-exporter", mode="idle"}[1m])
)
record: instance:node_cpu_utilisation:rate1m
prometheus-statefulset
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: prometheus
labels:
app: prometheus
spec:
selector:
matchLabels:
app: prometheus
serviceName: prometheus
replicas: 1
template:
metadata:
labels:
app: prometheus
spec:
terminationGracePeriodSeconds: 10
containers:
- name: prometheus
image: prom/prometheus
imagePullPolicy: Always
ports:
- name: http
containerPort: 9090
volumeMounts:
- name: prometheus-config
mountPath: "/etc/prometheus/prometheus.yml"
subPath: prometheus.yml
- name: prometheus-data
mountPath: "/prometheus"
#- name: rules-general
# mountPath: "/etc/prometheus/prometheus.rules.yml"
# subPath: prometheus.rules.yml
livenessProbe:
httpGet:
path: /-/healthy
port: 9090
initialDelaySeconds: 120
periodSeconds: 40
successThreshold: 1
timeoutSeconds: 10
failureThreshold: 3
readinessProbe:
httpGet:
path: /-/healthy
port: 9090
initialDelaySeconds: 120
periodSeconds: 40
successThreshold: 1
timeoutSeconds: 10
failureThreshold: 3
securityContext:
fsGroup: 1000
volumes:
- name: prometheus-config
configMap:
name: prometheus-server-conf
#- name: rules-general
# configMap:
# name: prometheus-server-conf
volumeClaimTemplates:
- metadata:
name: prometheus-data
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: rbd-default
resources:
requests:
storage: 10Gi