Creating Templates
Creating a Variable Template
To create a simple template in Grafana, you can use variables. Variables can be defined in the dashboard settings, and you can use them in panels or queries. Below is an example of creating a basic variable template in Grafana.
{
"variables": [
{
"name": "server",
"type": "query",
"query": "label_values(up, instance)"
}
]
}
Variable with Custom Values
Grafana allows you to create variables with custom values. You can specify static options, like a list of server names or IP addresses. Here's an example of creating a custom variable for a server list:
{
"variables": [
{
"name": "server",
"type": "custom",
"options": ["server1", "server2", "server3"]
}
]
}
Using Variables in Dashboards
Using Variables in Queries
Once you’ve created a variable, you can use it in queries. Below is an example of using a variable in a Prometheus query:
avg(rate(cpu_load{instance=~"$server"}[5m]))
Using Variables in Dashboards
In Grafana dashboards, you can apply variables to filter data dynamically. For instance, you can use a dropdown to select a server dynamically and apply that filter to all your visualizations in the dashboard:
avg(rate(cpu_load{instance=~"$server"}[5m]))
Dynamic Dashboards with Templating
Creating Dynamic Dashboards
Dynamic dashboards can be created in Grafana by using templates to filter the data being displayed. For example, you can use variables to filter the displayed metrics based on the selected time range or the server name:
avg(rate(cpu_load{instance=~"$server"}[5m]))
Interactivity with Dynamic Variables
Dynamic dashboards allow for interactivity by allowing users to filter data on the fly. A common use case is using a drop-down menu to select a specific server to view its metrics:
avg(rate(cpu_load{instance=~"$server"}[5m]))
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