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# apache

## Default Metrics

The following metrics are emitted by default. Each of them can be disabled by applying the following configuration:

```yaml
metrics:
  <metric_name>:
    enabled: false
```

### apache.cpu.load

Current load of the CPU.

| Unit | Metric Type | Value Type |
| ---- | ----------- | ---------- |
| % | Gauge | Double |

### apache.cpu.time

Jiffs used by processes of given category.

| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
| ---- | ----------- | ---------- | ----------------------- | --------- |
| {jiff} | Sum | Double | Cumulative | true |

#### Attributes

| Name | Description | Values |
| ---- | ----------- | ------ |
| level | Level of processes. | Str: ``self``, ``children`` |
| mode | Mode of processes. | Str: ``system``, ``user`` |

### apache.current_connections

The number of active connections currently attached to the HTTP server.

| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
| ---- | ----------- | ---------- | ----------------------- | --------- |
| {connections} | Sum | Int | Cumulative | false |

### apache.load.1

The average server load during the last minute.

| Unit | Metric Type | Value Type |
| ---- | ----------- | ---------- |
| % | Gauge | Double |

### apache.load.15

The average server load during the last 15 minutes.

| Unit | Metric Type | Value Type |
| ---- | ----------- | ---------- |
| % | Gauge | Double |

### apache.load.5

The average server load during the last 5 minutes.

| Unit | Metric Type | Value Type |
| ---- | ----------- | ---------- |
| % | Gauge | Double |

### apache.request.time

Total time spent on handling requests.

| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
| ---- | ----------- | ---------- | ----------------------- | --------- |
| ms | Sum | Int | Cumulative | true |

### apache.requests

The number of requests serviced by the HTTP server per second.

| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
| ---- | ----------- | ---------- | ----------------------- | --------- |
| {requests} | Sum | Int | Cumulative | true |

### apache.scoreboard

The number of workers in each state.

The apache scoreboard is an encoded representation of the state of all the server's workers. This metric decodes the scoreboard and presents a count of workers in each state. Additional details can be found [here](https://metacpan.org/pod/Apache::Scoreboard#DESCRIPTION).

| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
| ---- | ----------- | ---------- | ----------------------- | --------- |
| {workers} | Sum | Int | Cumulative | false |

#### Attributes

| Name | Description | Values |
| ---- | ----------- | ------ |
| state | The state of a connection. | Str: ``open``, ``waiting``, ``starting``, ``reading``, ``sending``, ``keepalive``, ``dnslookup``, ``closing``, ``logging``, ``finishing``, ``idle_cleanup``, ``unknown`` |

### apache.traffic

Total HTTP server traffic.

| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
| ---- | ----------- | ---------- | ----------------------- | --------- |
| By | Sum | Int | Cumulative | true |

### apache.uptime

The amount of time that the server has been running in seconds.

| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
| ---- | ----------- | ---------- | ----------------------- | --------- |
| s | Sum | Int | Cumulative | true |

### apache.workers

The number of workers currently attached to the HTTP server.

| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
| ---- | ----------- | ---------- | ----------------------- | --------- |
| {workers} | Sum | Int | Cumulative | false |

#### Attributes

| Name | Description | Values |
| ---- | ----------- | ------ |
| state | The state of workers. | Str: ``busy``, ``idle`` |

## Resource Attributes

| Name | Description | Values | Enabled |
| ---- | ----------- | ------ | ------- |
| apache.server.name | The name of the Apache HTTP server. | Any Str | true |
| apache.server.port | The port of the Apache HTTP server. | Any Str | true |