# Add tidbcluster variables, query is ignored
```yaml
  "templating": {
    "list": [
      {
        "allValue": null,
        "datasource": "Prometheus-fake",
        "definition": "label_values({job=\"pd\"}, tidb_cluster)",
        "description": null,
        "error": null,
        "hide": 0,
        "includeAll": false,
        "label": "tidb_cluster",
        "multi": false,
        "name": "tidb_cluster",
        "options": [],
        "query": {
          "query": "label_values({job=\"pd\"}, tidb_cluster)",
          "refId": "StandardVariableQuery"
        },
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 0,
        "type": "query"
      }
```

# Update ${DS_TEST-CLUSTER} to prometheus datasource 
```yaml
replace:
  ${DS_TEST-CLUSTER} => Prometheus
```