Bosun Templates: Graph and GraphAll Graph or GraphAll using inline or dynamic query
Example
Graph queries can be defined inline if you don't want to use an Alert variable.
template graph.template {
subject = ...
body = `{{template "header" .}}
<strong>Graph With Inline Query</strong>
<div>{{.Graph "q(\"avg:300s-avg:os.mem.percent_free{host=specifichost}\", \"1d\", \"\")" "Free Memory in GB"}}</div>
<strong>GraphAll with Inline Query</strong>
<div>{{.GraphAll "q(\"avg:300s-avg:os.mem.percent_free{host=host1|host2|host3}\", \"1d\", \"\")" "All Systems Free Memory in GB"}}</div>
`
}
Sometimes you may want to create the query for a graph dynamically in the template itself by combining one or more variables. For instance a host down alert might want to include the Bosun known hosts ping metric using the dst_host tag.
template host.down {
subject = ...
body = `{{template "header" .}}
<strong>Graph from one variable</strong>
<div>{{printf "q(\"sum:bosun.ping.timeout{dst_host=%s}\", \"8h\", \"\")" (.Group.host) | .Graph}}</div>
<strong>Graph from multiple variables</strong>
<div>{{printf "q(\"sum:%s{host=%s,anothertag=%s}\", \"8h\", \"\")" "some.metric.name" .Group.host "anothervalue" | .Graph}}</div>
`
}
The printf statement will generate q("sum:bosun.ping.timeout{dst_host=alerthostname}", "8h", "") when that host triggers an alert and then use that to create the graph in the notification.
