[Grafana] 그라파나 알리아스 패턴 (Alias patterns)

http://docs.grafana.org/features/datasources/influxdb/

Alias patterns

• $m = replaced with measurement name
• $measurement = replaced with measurement name
• $col = replaced with column name
• $tag_exampletag = replaced with the value of the exampletag tag. The syntax is $tag_yourTagName (must start with $tag_). To use your tag as an alias in the ALIAS BY field then the tag must be used to group by in the query.
• You can also use [[tag_hostname]] pattern replacement syntax. For example, in the ALIAS BY field using this text Host: [[tag_hostname]] would substitute in the hostname tag value for each legend value and an example legend value would be: Host: server1.