`ticdc_new_arch_next_gen.json`'s label selection `sharedpool_id="$tidb_cluster"` is invalid

[kennytm]

What did you do?

The ticdc_new_arch_next_gen.json dashboard used the label selection sharedpool_id="$tidb_cluster" everywhere

ticdc/metrics/grafana/ticdc_new_arch_next_gen.json

Line 199 in 4e8ac08

"expr": "max(ticdc_owner_checkpoint_ts_lag{k8s_cluster=\"$k8s_cluster\", sharedpool_id=\"$tidb_cluster\", keyspace_name=~\"$keyspace_name\", changefeed=~\"$changefeed\"}) by (keyspace_name, changefeed)",

however in this dashboard there does not exist any tidb_cluster variable, only a sharedpool_id variable.

ticdc/metrics/grafana/ticdc_new_arch_next_gen.json

Lines 23329 to 23336 in 4e8ac08

	"label": "sharedpool_id",
	"multi": false,
	"name": "sharedpool_id",
	"options": [],
	"query": {
	"query": "label_values(go_goroutines{k8s_cluster=\"$k8s_cluster\"}, sharedpool_id)",
	"refId": "local-sharedpool_id-Variable-Query"
	},

I think all of them should be changed to sharedpool_id="$sharedpool_id" (and tidb_cluster="$tidb_cluster).

(Internal reference TICKET-8069; The customer is likely not using nextgen as this is an OP deployment. However tiup somehow only installed the nextgen version of the dashboard so they are still affected.)

What did you expect to see?

Dashboard panels have data.

What did you see instead?

All dashboard panels are empty.

Versions of the cluster

v8.5.4