"All" value in any variable is creating issue while using Alertmanager as a datasource in Grafana.

[Yagyansh S. Kumar]

Hi. I have made a variable "cluster" in Grafana that contains all my clusters(ADS,TV etc.) present in my Infra.

Now, I want the critical alert count for every service(CPU, Memory, Disk) clusterwise which I am getting successfully using the alertmanager query - alertname="CPULOAD", cluster="$cluster" .

This works fine when I select a particular cluster. But when I need the total critical count for that service, I select "All" in the cluster variable and it breaks. 

Can someone help? Or suggest a better method, if any.

Thanks in advance.

[Brian Candler]

If you are using multi-select in Grafana, you have to write your label match as cluster=~"$cluster"

[Yagyansh S. Kumar]

Oh man! Can't believe I missed the tilde.

Thanks Brain.