Config loki+promtail get and store logs from specific namespaces

Grafana Loki
,
1

Hi all,
I have k8s cluster internal , I installed loki , grafana , promtail by helm

helm -n monitoring install loki grafana/loki -f loki-values.yaml
loki-values.yaml
loki:
  auth_enabled: false
  commonConfig:
    replication_factor: 1
  storage:
    type: 'filesystem'
    filesystem:
      volumeClaimTemplate:
        spec:
          storageClassName: storageclass-csi-nfs-sgnnas03
          accessModes: ["ReadWriteOnce"]
          resources:
            requests:
              storage: 10Gi
  monitoring:
    serviceMonitor:
      enabled: false
    selfMonitoring:
      enabled: false
  tableManager:
    enabled: true
    retention_deletes_enabled: true
    retention_period: 720h
singleBinary:
  replicas: 1

helm -n monitoring install promtail grafana/promtail -f promtail-values.yaml
promtail-values.yaml
config:
  # publish data to loki
  clients:
    - url: http://loki-gateway/loki/api/v1/push
      tenant_id: 1

They work fine but as default promtail will get logs from all pod in all namespace and store logs in loki.
I want to config loki+promtail so they get logs from specific namespaces (for ex namespace1 & namespace2) only and store logs in loki.
So from grafana → explore can only query filter label namespace=namespace1 and view logs of pods in namespace1 , cannot query filter label namespace=cert-manager or kube-system.
Is it feasible? Please give me some advice , thank you very much.