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Move back into integrations prometheus doc

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doc/user/project/integrations/prometheus.md
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......@@ -331,7 +331,7 @@ The following tables outline the details of expected properties.
| -------- | ---- | -------- | ----------- |
| `variables` | Hash | no | Variables can be defined here. |
Read the documentation on [templating](../metrics/dashboard/templating.md).
Read the documentation on [templating](#templating-variables-for-metrics-dashboards).
##### **Panel group (`panel_groups`) properties**
......@@ -670,6 +670,106 @@ Note the following properties:
![heatmap panel type](img/heatmap_panel_type.png)
### Templating variables for metrics dashboards
Templating variables can be used to make your metrics dashboard more versatile.
#### Templating variable types
`templating` is a top-level key in the
[dashboard YAML](#dashboard-top-level-properties).
Define your variables in the `variables` key, under `templating`. The value of
the `variables` key should be a hash, and each key under `variables`
defines a templating variable on the dashboard.
A variable can be used in a Prometheus query in the same dashboard using the syntax
described [here](#using-variables).
##### `text` variable type
CAUTION: **Warning:**
This variable type is an _alpha_ feature, and is subject to change at any time
without prior notice!
For each `text` variable defined in the dashboard YAML, there will be a free text
box on the dashboard UI, allowing you to enter a value for each variable.
The `text` variable type supports a simple and a full syntax.
###### Simple syntax
This example creates a variable called `variable1`, with a default value
of `default value`:
```yaml
templating:
variables:
variable1: 'default value' # `text` type variable with `default value` as its default.
```
###### Full syntax
This example creates a variable called `variable1`, with a default value of `default`.
The label for the text box on the UI will be the value of the `label` key:
```yaml
templating:
variables:
variable1: # The variable name that can be used in queries.
label: 'Variable 1' # (Optional) label that will appear in the UI for this text box.
type: text
options:
default_value: 'default' # (Optional) default value.
```
##### `custom` variable type
CAUTION: **Warning:**
This variable type is an _alpha_ feature, and is subject to change at any time
without prior notice!
Each `custom` variable defined in the dashboard YAML creates a dropdown
selector on the dashboard UI, allowing you to select a value for each variable.
The `custom` variable type supports a simple and a full syntax.
###### Simple syntax
This example creates a variable called `variable1`, with a default value of `value1`.
The dashboard UI will display a dropdown with `value1`, `value2` and `value3`
as the choices.
```yaml
templating:
variables:
variable1: ['value1', 'value2', 'value3']
```
###### Full syntax
This example creates a variable called `variable1`, with a default value of `var1_option_2`.
The label for the text box on the UI will be the value of the `label` key.
The dashboard UI will display a dropdown with `Option 1` and `Option 2`
as the choices.
If you select `Option 1` from the dropdown, the variable will be replaced with `value option 1`.
Similarly, if you select `Option 2`, the variable will be replaced with `value_option_2`:
```yaml
templating:
variables:
variable1: # The variable name that can be used in queries.
label: 'Variable 1' # (Optional) label that will appear in the UI for this dropdown.
type: custom
options:
values:
- value: 'value option 1' # The value that will replace the variable in queries.
text: 'Option 1' # (Optional) Text that will appear in the UI dropdown.
- value: 'value_option_2'
text: 'Option 2'
default: true # (Optional) This option should be the default value of this variable.
```
### View and edit the source file of a custom dashboard
> [Introduced](https://gitlab.com/gitlab-org/gitlab/issues/34779) in GitLab 12.5.
......
doc/user/project/metrics/dashboard/templating.md deleted 100644 → 0
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---
stage: Monitor
group: APM
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
---
# Templating variables for metrics dashboards
Templating variables can be used to make your metrics dashboard more versatile.
## Templating variable types
`templating` is a top-level key in the
[dashboard YAML](../../integrations/prometheus.md#dashboard-top-level-properties).
Define your variables in the `variables` key, under `templating`. The value of
the `variables` key should be a hash, and each key under `variables`
defines a templating variable on the dashboard.
A variable can be used in a Prometheus query in the same dashboard using the syntax
described [here](../../integrations/prometheus.md#using-variables).
### `text` variable type
CAUTION: **Warning:**
This variable type is an _alpha_ feature, and is subject to change at any time
without prior notice!
For each `text` variable defined in the dashboard YAML, there will be a free text
box on the dashboard UI, allowing you to enter a value for each variable.
The `text` variable type supports a simple and a full syntax.
#### Simple syntax
This example creates a variable called `variable1`, with a default value
of `default value`:
```yaml
templating:
variables:
variable1: 'default value' # `text` type variable with `default value` as its default.
```
#### Full syntax
This example creates a variable called `variable1`, with a default value of `default`.
The label for the text box on the UI will be the value of the `label` key:
```yaml
templating:
variables:
variable1: # The variable name that can be used in queries.
label: 'Variable 1' # (Optional) label that will appear in the UI for this text box.
type: text
options:
default_value: 'default' # (Optional) default value.
```
### `custom` variable type
CAUTION: **Warning:**
This variable type is an _alpha_ feature, and is subject to change at any time
without prior notice!
Each `custom` variable defined in the dashboard YAML creates a dropdown
selector on the dashboard UI, allowing you to select a value for each variable.
The `custom` variable type supports a simple and a full syntax.
#### Simple syntax
This example creates a variable called `variable1`, with a default value of `value1`.
The dashboard UI will display a dropdown with `value1`, `value2` and `value3`
as the choices.
```yaml
templating:
variables:
variable1: ['value1', 'value2', 'value3']
```
#### Full syntax
This example creates a variable called `variable1`, with a default value of `var1_option_2`.
The label for the text box on the UI will be the value of the `label` key.
The dashboard UI will display a dropdown with `Option 1` and `Option 2`
as the choices.
If you select `Option 1` from the dropdown, the variable will be replaced with `value option 1`.
Similarly, if you select `Option 2`, the variable will be replaced with `value_option_2`:
```yaml
templating:
variables:
variable1: # The variable name that can be used in queries.
label: 'Variable 1' # (Optional) label that will appear in the UI for this dropdown.
type: custom
options:
values:
- value: 'value option 1' # The value that will replace the variable in queries.
text: 'Option 1' # (Optional) Text that will appear in the UI dropdown.
- value: 'value_option_2'
text: 'Option 2'
default: true # (Optional) This option should be the default value of this variable.
```
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