When there is no data how can show my service as DOWN in grafana

For one service i am able to make like below with vector(0)

vector(0) OR sum(etcd_server_has_leader{instance=“172.16.46.118:2329”})

But when the operation comes to AND it is failing since no data for output it is failing.

Let me know if there is any alertnatives to fix this.

Hi …Can any one help on this …let us know if we don’t have any kind of feature.