[chore] Move system metric attributes to the registry

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -61,6 +61,7 @@ body:
         - area:service
         - area:session
         - area:source
+        - area:system
         - area:telemetry
         - area:thread
         - area:tls

.github/ISSUE_TEMPLATE/change_proposal.yaml

@@ -54,6 +54,7 @@ body:
         - area:service
         - area:session
         - area:source
+        - area:system
         - area:telemetry
         - area:thread
         - area:tls

.github/ISSUE_TEMPLATE/new-conventions.yaml

@@ -63,6 +63,7 @@ body:
         - area:service
         - area:session
         - area:source
+        - area:system
         - area:telemetry
         - area:thread
         - area:tls

docs/attributes-registry/system.md

@@ -0,0 +1,178 @@
+# System
+
+<!-- toc -->
+
+- [CPU attributes](#cpu-attributes)
+- [Memory attributes](#memory-attributes)
+- [Paging attributes](#paging-attributes)
+- [Filesystem attributes](#filesystem-attributes)
+- [Network attributes](#network-attributes)
+- [Process attributes](#process-attributes)
+- [Deprecated System Attributes](#deprecated-system-attributes)
+
+<!-- tocstop -->
+
+<!-- semconv registry.system(omit_requirement_level) -->
+| Attribute  | Type | Description  | Examples  | Stability |
+|---|---|---|---|---|
+| `system.device` | string | The device identifier | `(identifier)` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+<!-- endsemconv -->
+
+## CPU attributes
+
+<!-- semconv registry.system.cpu(omit_requirement_level) -->
+| Attribute  | Type | Description  | Examples  | Stability |
+|---|---|---|---|---|
+| `system.cpu.logical_number` | int | The logical CPU number [0..n-1] | `1` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `system.cpu.state` | string | The state of the CPU | `idle`; `interrupt` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.cpu.state` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
+
+| Value  | Description | Stability |
+|---|---|---|
+| `user` | user | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `system` | system | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `nice` | nice | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `idle` | idle | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `iowait` | iowait | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `interrupt` | interrupt | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `steal` | steal | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+<!-- endsemconv -->
+
+## Memory attributes
+
+<!-- semconv registry.system.memory(omit_requirement_level) -->
+| Attribute  | Type | Description  | Examples  | Stability |
+|---|---|---|---|---|
+| `system.memory.state` | string | The memory state | `free`; `cached` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.memory.state` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
+
+| Value  | Description | Stability |
+|---|---|---|
+| `used` | used | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `free` | free | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `shared` | shared | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `buffers` | buffers | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `cached` | cached | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+<!-- endsemconv -->
+
+## Paging attributes
+
+<!-- semconv registry.system.paging(omit_requirement_level) -->
+| Attribute  | Type | Description  | Examples  | Stability |
+|---|---|---|---|---|
+| `system.paging.direction` | string | The paging access direction | `in` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `system.paging.state` | string | The memory paging state | `free` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `system.paging.type` | string | The memory paging type | `minor` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.paging.direction` MUST be one of the following:
+
+| Value  | Description | Stability |
+|---|---|---|
+| `in` | in | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `out` | out | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.paging.state` MUST be one of the following:
+
+| Value  | Description | Stability |
+|---|---|---|
+| `used` | used | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `free` | free | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.paging.type` MUST be one of the following:
+
+| Value  | Description | Stability |
+|---|---|---|
+| `major` | major | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `minor` | minor | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+<!-- endsemconv -->
+
+## Filesystem attributes
+
+<!-- semconv registry.system.filesystem(omit_requirement_level) -->
+| Attribute  | Type | Description  | Examples  | Stability |
+|---|---|---|---|---|
+| `system.filesystem.mode` | string | The filesystem mode | `rw, ro` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `system.filesystem.mountpoint` | string | The filesystem mount path | `/mnt/data` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `system.filesystem.state` | string | The filesystem state | `used` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `system.filesystem.type` | string | The filesystem type | `ext4` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.filesystem.state` MUST be one of the following:
+
+| Value  | Description | Stability |
+|---|---|---|
+| `used` | used | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `free` | free | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `reserved` | reserved | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.filesystem.type` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
+
+| Value  | Description | Stability |
+|---|---|---|
+| `fat32` | fat32 | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `exfat` | exfat | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `ntfs` | ntfs | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `refs` | refs | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `hfsplus` | hfsplus | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `ext4` | ext4 | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+<!-- endsemconv -->
+
+## Network attributes
+
+<!-- semconv registry.system.network(omit_requirement_level) -->
+| Attribute  | Type | Description  | Examples  | Stability |
+|---|---|---|---|---|
+| `system.network.state` | string | A stateless protocol MUST NOT set this attribute | `close_wait` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.network.state` MUST be one of the following:
+
+| Value  | Description | Stability |
+|---|---|---|
+| `close` | close | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `close_wait` | close_wait | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `closing` | closing | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `delete` | delete | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `established` | established | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `fin_wait_1` | fin_wait_1 | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `fin_wait_2` | fin_wait_2 | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `last_ack` | last_ack | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `listen` | listen | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `syn_recv` | syn_recv | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `syn_sent` | syn_sent | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `time_wait` | time_wait | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+<!-- endsemconv -->
+
+## Process attributes
+
+<!-- semconv registry.system.process(omit_requirement_level) -->
+| Attribute  | Type | Description  | Examples  | Stability |
+|---|---|---|---|---|
+| `system.process.status` | string | The process state, e.g., [Linux Process State Codes](https://man7.org/linux/man-pages/man1/ps.1.html#PROCESS_STATE_CODES) | `running` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+`system.process.status` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
+
+| Value  | Description | Stability |
+|---|---|---|
+| `running` | running | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `sleeping` | sleeping | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `stopped` | stopped | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `defunct` | defunct | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+<!-- endsemconv -->
+
+## Deprecated System Attributes
+
+<!-- semconv registry.system.deprecated(omit_requirement_level) -->
+| Attribute  | Type | Description  | Examples  | Stability |
+|---|---|---|---|---|
+| `system.processes.status` | string | Deprecated, use `system.process.status` instead. | `running` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by `system.process.status`. |
+
+`system.processes.status` has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
+
+| Value  | Description | Stability |
+|---|---|---|
+| `running` | running | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `sleeping` | sleeping | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `stopped` | stopped | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| `defunct` | defunct | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+<!-- endsemconv -->

docs/system/container-metrics.md

@@ -65,7 +65,7 @@ This metric is [opt-in][MetricOptIn].
 | Attribute  | Type | Description  | Examples  | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
 |---|---|---|---|---|---|
 | [`disk.io.direction`](../attributes-registry/disk.md) | string | The disk IO operation direction. | `read` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
-| `system.device` | string | The device identifier | `(identifier)` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| [`system.device`](../attributes-registry/system.md) | string | The device identifier | `(identifier)` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 
 `disk.io.direction` MUST be one of the following:
 
@@ -91,7 +91,7 @@ This metric is [opt-in][MetricOptIn].
 | Attribute  | Type | Description  | Examples  | [Requirement Level](https://opentelemetry.io/docs/specs/semconv/general/attribute-requirement-level/) | Stability |
 |---|---|---|---|---|---|
 | [`network.io.direction`](../attributes-registry/network.md) | string | The network IO operation direction. | `transmit` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
-| `system.device` | string | The device identifier | `(identifier)` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| [`system.device`](../attributes-registry/system.md) | string | The device identifier | `(identifier)` | `Recommended` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 
 `network.io.direction` MUST be one of the following: