feat: add guides for more otel collector use cases

docs/concepts/otlp/index.mdx

@@ -250,3 +250,7 @@ The following SDKs have dedicated integrations that make OTLP setup easy:
     label="Python"
     url="/platforms/python/integrations/otlp"
   />
+
+## OpenTelemetry Collector Guides
+
+View the [OpenTelemetry Collector Guides](/product/drains/integration/opentelemetry-collector/#open-telemetry-collector-guides) to learn how to leverage the OpenTelemetry Collector to send traces and logs to Sentry from different sources like Kafka or Nginx.

docs/product/drains/integration/opentelemetry-collector.mdx

@@ -137,3 +137,13 @@ service:
       receivers: [routing]
       exporters: [otlphttp/project-b]
 ```
+
+## OpenTelemetry Collector Guides
+
+These guides show you how to leverage the OpenTelemetry Collector to send traces and logs to Sentry from different sources.
+
+- [Forwarding AWS CloudWatch Logs to Sentry](/product/drains/otlp-guides/aws-cloudwatch/)
+- [Forwarding Logs and Traces from Kafka to Sentry](/product/drains/otlp-guides/kafka/)
+- [Forwarding Nginx Logs to Sentry](/product/drains/otlp-guides/nginx/)
+- [Forwarding Syslog Messages to Sentry](/product/drains/otlp-guides/syslog/)
+- [Forwarding Windows Event Logs to Sentry](/product/drains/otlp-guides/windows-events/)

docs/product/drains/otlp-guides/aws-cloudwatch.mdx

@@ -0,0 +1,199 @@
+---
+title: Forwarding AWS CloudWatch Logs to Sentry via the OpenTelemetry Protocol (OTLP)
+sidebar_order: 100
+description: "Learn how to forward AWS CloudWatch logs to Sentry via the OpenTelemetry Protocol (OTLP)."
+keywords:
+  ["otlp", "otel", "opentelemetry", "aws", "cloudwatch", "logs", "amazon"]
+---
+
+This guide shows you how to collect AWS CloudWatch logs and forward them to Sentry using the OpenTelemetry Collector with the [AWS CloudWatch Receiver](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/awscloudwatchreceiver).
+
+## Prerequisites
+
+Before you begin, ensure you have:
+
+- AWS credentials configured with permissions to read CloudWatch logs
+- A Sentry project to send data to
+
+## Step 1: Install the OpenTelemetry Collector
+
+The AWS CloudWatch Receiver is included in the [OpenTelemetry Collector Contrib](https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib) distribution. You'll need to download and install this version, as the standard `otelcol` binary does not include the AWS CloudWatch Receiver.
+
+Download the latest `otelcol-contrib` binary from the [OpenTelemetry Collector releases page](https://github.com/open-telemetry/opentelemetry-collector-releases/releases).
+
+## Step 2: Configure AWS Credentials
+
+The AWS CloudWatch Receiver uses the [AWS SDK](https://docs.aws.amazon.com/sdk-for-go/v1/developer-guide/configuring-sdk.html) for authentication, which supports multiple methods including credentials files and EC2 instance metadata (IMDS).
+
+### Using AWS Credentials File
+
+Configure your AWS credentials using the AWS CLI:
+
+```bash
+aws configure
+```
+
+This creates a credentials file at `~/.aws/credentials` with your access key and secret.
+
+### Using IAM Role (EC2)
+
+If running on EC2, attach an IAM role with the `CloudWatchLogsReadOnlyAccess` policy to your instance.
+
+### Required IAM Permissions
+
+Your AWS credentials need the following permissions:
+
+- `logs:DescribeLogGroups`
+- `logs:DescribeLogStreams`
+- `logs:GetLogEvents`
+
+## Step 3: Get Your Sentry OTLP Credentials
+
+You'll need your Sentry OTLP endpoint and authentication header. These can be found in your [Sentry Project Settings](https://sentry.io/settings/projects/) under **Client Keys (DSN)** > **OpenTelemetry (OTLP)**.
+
+### Logs Endpoint
+
+```bash
+___OTLP_LOGS_URL___
+```
+
+### Authentication Header
+
+```
+x-sentry-auth: sentry sentry_key=___PUBLIC_KEY___
+```
+
+## Step 4: Configure the Collector
+
+Create a configuration file with the AWS CloudWatch Receiver and the OTLP HTTP exporter configured to send logs to Sentry.
+
+For additional configuration options, see the [AWS CloudWatch Receiver Documentation](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/awscloudwatchreceiver).
+
+### Collect All Log Groups (Autodiscover)
+
+This configuration automatically discovers and collects logs from all CloudWatch log groups:
+
+```yaml {filename:config.yaml}
+receivers:
+  awscloudwatch:
+    region: us-east-1
+    logs:
+      poll_interval: 1m
+
+processors:
+  batch:
+    send_batch_size: 1024
+    send_batch_max_size: 2048
+    timeout: "1s"
+
+exporters:
+  otlphttp/sentry:
+    logs_endpoint: ___OTLP_LOGS_URL___
+    headers:
+      x-sentry-auth: "sentry sentry_key=___PUBLIC_KEY___"
+    compression: gzip
+    encoding: proto
+
+service:
+  pipelines:
+    logs:
+      receivers:
+        - awscloudwatch
+      processors:
+        - batch
+      exporters:
+        - otlphttp/sentry
+```
+
+### Collect Specific Log Groups by Prefix
+
+This configuration discovers log groups matching a specific prefix, useful for collecting logs from specific AWS services like EKS or Lambda:
+
+```yaml {filename:config.yaml}
+receivers:
+  awscloudwatch:
+    region: us-east-1
+    logs:
+      poll_interval: 1m
+      groups:
+        autodiscover:
+          limit: 100
+          prefix: /aws/lambda/
+
+processors:
+  batch:
+    send_batch_size: 1024
+    send_batch_max_size: 2048
+    timeout: "1s"
+
+exporters:
+  otlphttp/sentry:
+    logs_endpoint: ___OTLP_LOGS_URL___
+    headers:
+      x-sentry-auth: "sentry sentry_key=___PUBLIC_KEY___"
+    compression: gzip
+    encoding: proto
+
+service:
+  pipelines:
+    logs:
+      receivers:
+        - awscloudwatch
+      processors:
+        - batch
+      exporters:
+        - otlphttp/sentry
+```
+
+### Collect Named Log Groups
+
+This configuration collects logs from specific, named log groups:
+
+```yaml {filename:config.yaml}
+receivers:
+  awscloudwatch:
+    region: us-east-1
+    logs:
+      poll_interval: 1m
+      groups:
+        named:
+          /aws/lambda/my-function:
+          /aws/eks/my-cluster/cluster:
+
+processors:
+  batch:
+    send_batch_size: 1024
+    send_batch_max_size: 2048
+    timeout: "1s"
+
+exporters:
+  otlphttp/sentry:
+    logs_endpoint: ___OTLP_LOGS_URL___
+    headers:
+      x-sentry-auth: "sentry sentry_key=___PUBLIC_KEY___"
+    compression: gzip
+    encoding: proto
+
+service:
+  pipelines:
+    logs:
+      receivers:
+        - awscloudwatch
+      processors:
+        - batch
+      exporters:
+        - otlphttp/sentry
+```
+
+## Troubleshooting
+
+- Verify your AWS credentials are correctly configured and have the required permissions
+- Ensure the specified AWS region matches where your CloudWatch log groups are located
+- Check that the log group names or prefixes match existing CloudWatch log groups
+
+## Additional Resources
+
+- [AWS CloudWatch Receiver Documentation](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/receiver/awscloudwatchreceiver)
+- [AWS SDK Authentication](https://docs.aws.amazon.com/sdk-for-go/v1/developer-guide/configuring-sdk.html)
+- [Sentry OpenTelemetry Collector Configuration](/product/drains/integration/opentelemetry-collector/)
+- [Sentry Logs](/product/explore/logs/)