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[chore][receivercreator] docs: add data type to endpoints variables (#…
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…31407)

**Description:**

Adding data type to endpoints(pod/port/node/...) variables in the readme
doc.
The reason why I'd like to do this is, I tried to use the receiver
creator to scrape metrics with prometheus receiver and the configuration
is like:
```
receiver_creator/1:
    receivers:
      prometheus_simple/app_pods:
        rule: type == "port" && pod.annotations["prometheus.io/scrape"] == "true" && ( port == pod.annotations["prometheus.io/port"] || name == pod.annotations["prometheus.io/port"] )
        config:
          endpoint: '`endpoint`'
          metrics_path: '`"prometheus.io/path" in pod.annotations ? pod.annotations["prometheus.io/path"] : "/metrics"`'
          collection_interval: '`"prometheus.io/collection_interval" in pod.annotations ? pod.annotations["prometheus.io/collection_interval"] : "10s"`'
```
I made a silly mistake here in `port ==
pod.annotations["prometheus.io/port"]`, I ignored the data type of
`port` variable and it took me a while to fix it.
So I think it will help others and avoid such kinds of mistakes to add
the data types in readme.
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@chenlujjj
chenlujjj committed Feb 27, 2024
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136 changes: 68 additions & 68 deletions receiver/receivercreator/README.md
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Expand Up @@ -157,89 +157,89 @@ targeting it will have different variables available.

### Pod

| Variable | Description |
|-------------|-----------------------------------|
| type | `"pod"` |
| id | ID of source endpoint |
| name | name of the pod |
| namespace | namespace of the pod |
| uid | unique id of the pod |
| labels | map of labels set on the pod |
| annotations | map of annotations set on the pod |
| Variable | Description | Data Type |
|-------------|-----------------------------------|-------------------------------|
| type | `"pod"` | String |
| id | ID of source endpoint | String |
| name | name of the pod | String |
| namespace | namespace of the pod | String |
| uid | unique id of the pod | String |
| labels | map of labels set on the pod | Map with String key and value |
| annotations | map of annotations set on the pod | Map with String key and value |

### Port

| Variable | Description |
|-----------------|-----------------------------------------|
| type | `"port"` |
| id | ID of source endpoint |
| name | container port name |
| port | port number |
| protocol | The transport protocol ("TCP" or "UDP") |
| pod.name | name of the owning pod |
| pod.namespace | namespace of the pod |
| pod.uid | unique id of the pod |
| pod.labels | map of labels of the owning pod |
| pod.annotations | map of annotations of the owning pod |
| Variable | Description | Data Type |
|-----------------|-----------------------------------------|-------------------------------|
| type | `"port"` | String |
| id | ID of source endpoint | String |
| name | container port name | String |
| port | port number | Integer |
| protocol | The transport protocol ("TCP" or "UDP") | String |
| pod.name | name of the owning pod | String |
| pod.namespace | namespace of the pod | String |
| pod.uid | unique id of the pod | String |
| pod.labels | map of labels of the owning pod | Map with String key and value |
| pod.annotations | map of annotations of the owning pod | Map with String key and value |

### Host Port

| Variable | Description |
|---------------|--------------------------------------------------|
| type | `"hostport"` |
| id | ID of source endpoint |
| process_name | Name of the process |
| command | Command line with the used to invoke the process |
| is_ipv6 | true if endpoint is IPv6, otherwise false |
| port | Port number |
| transport | The transport protocol ("TCP" or "UDP") |
| Variable | Description | Data Type |
|---------------|--------------------------------------------------|-------------------------------|
| type | `"hostport"` | String |
| id | ID of source endpoint | String |
| process_name | Name of the process | String |
| command | Command line with the used to invoke the process | String |
| is_ipv6 | true if endpoint is IPv6, otherwise false | Boolean |
| port | Port number | Integer |
| transport | The transport protocol ("TCP" or "UDP") | String |

### Container

| Variable | Description |
|----------------|-------------------------------------------------------------------|
| type | `"container"` |
| id | ID of source endpoint |
| name | Primary name of the container |
| image | Name of the container image |
| port | Exposed port of the container |
| alternate_port | Exposed port accessed through redirection, such as a mapped port |
| command | The command used to invoke the process of the container |
| container_id | ID of the container |
| host | Hostname or IP of the underlying host the container is running on |
| transport | Transport protocol used by the endpoint (TCP or UDP) |
| labels | User-specified metadata labels on the container |
| Variable | Description | Data Type |
|----------------|-------------------------------------------------------------------|-------------------------------|
| type | `"container"` | String |
| id | ID of source endpoint | String |
| name | Primary name of the container | String |
| image | Name of the container image | String |
| port | Exposed port of the container | Integer |
| alternate_port | Exposed port accessed through redirection, such as a mapped port | Integer |
| command | The command used to invoke the process of the container | String |
| container_id | ID of the container | String |
| host | Hostname or IP of the underlying host the container is running on | String |
| transport | Transport protocol used by the endpoint (TCP or UDP) | String |
| labels | User-specified metadata labels on the container | Map with String key and value |

### Kubernetes Service

| Variable | Description |
|----------------|-------------------------------------------------------------------|
| type | `"k8s.service"` |
| id | ID of source endpoint |
| name | The name of the Kubernetes service |
| namespace | The namespace of the service |
| uid | The unique ID for the service |
| labels | The map of labels set on the service |
| annotations | The map of annotations set on the service |
| service_type | The type of the kubernetes service: ClusterIP, NodePort, LoadBalancer, ExternalName |
| cluster_ip | The cluster IP assigned to the service |
| Variable | Description | Data Type |
|----------------|---------------------------------------------------------------------------------------|-------------------------------|
| type | `"k8s.service"` | String |
| id | ID of source endpoint | String |
| name | The name of the Kubernetes service | String |
| namespace | The namespace of the service | String |
| uid | The unique ID for the service | String |
| labels | The map of labels set on the service | Map with String key and value |
| annotations | The map of annotations set on the service | Map with String key and value |
| service_type | The type of the kubernetes service: ClusterIP, NodePort, LoadBalancer, ExternalName | String |
| cluster_ip | The cluster IP assigned to the service | String |

### Kubernetes Node

| Variable | Description |
|----------------|-------------------------------------------------------------------|
| type | `"k8s.node"` |
| id | ID of source endpoint |
| name | The name of the Kubernetes node |
| uid | The unique ID for the node |
| hostname | The node's hostname as reported by its Status object |
| external_ip | The node's external IP address as reported by its Status object |
| internal_ip | The node's internal IP address as reported by its Status object |
| external_dns | The node's external DNS record as reported by its Status object |
| internal_dns | The node's internal DNS record as reported by its Status object |
| annotations | A key-value map of non-identifying, user-specified node metadata |
| labels | A key-value map of user-specified node metadata |
| kubelet_endpoint_port | The node Status object's DaemonEndpoints.KubeletEndpoint.Port value |
| Variable | Description | Data Type |
|-----------------------|----------------------------------------------------------------------|-------------------------------|
| type | `"k8s.node"` | String |
| id | ID of source endpoint | String |
| name | The name of the Kubernetes node | String |
| uid | The unique ID for the node | String |
| hostname | The node's hostname as reported by its Status object | String |
| external_ip | The node's external IP address as reported by its Status object | String |
| internal_ip | The node's internal IP address as reported by its Status object | String |
| external_dns | The node's external DNS record as reported by its Status object | String |
| internal_dns | The node's internal DNS record as reported by its Status object | String |
| annotations | A key-value map of non-identifying, user-specified node metadata | Map with String key and value |
| labels | A key-value map of user-specified node metadata | Map with String key and value |
| kubelet_endpoint_port | The node Status object's DaemonEndpoints.KubeletEndpoint.Port value | Integer |

## Examples

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