title: Can I create tag for metrics in cloudwatch?
body: <p>I am using AWS ALB and querying some metrics like <code>UnHealthyHostCount</code> under Application Load Balancer -> TargetGroup. I use this address to query the value <code>targetgroup/my-service-api/xxxxxxxx</code>. I wonder whether I can create tags for this metrics. I have many services using the same merics. I'd like to find a way to query a metrics for all my services.</p>