> For the complete documentation index, see [llms.txt](https://docs.ionos.com/cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/cloud/observability/logging-service/quick-start/send-logs-to-platform.md).
# Send Logs to the Platform
You can send logs to the Logging Service using Fluent Bit, or natively in the OpenTelemetry Protocol (OTLP) format. Based on your infrastructure—Kubernetes, Docker, Linux Systemd, HTTP, or OTLP—the configuration differs.
{% hint style="info" %}
**Prerequisites:**
* A `Ready` pipeline instance. To obtain `tcpAddress` or `httpAddress`, see [Set Up a Logging Pipeline](/cloud/observability/logging-service/api-how-tos/set-up-logging-pipeline-instance.md).
* A [key](/cloud/observability/logging-service/api-how-tos/obtain-key.md) obtained from the REST API.
* Fluent Bit installed on your system. For more information, refer to the [Getting Started with Fluent Bit Documentation](https://docs.fluentbit.io/manual/installation/getting-started-with-fluent-bit).
{% endhint %}
{% stepper %}
{% step %}
## Obtain the pipeline endpoint
After creating a pipeline, the response includes either a `tcpAddress` or `httpAddress`. Save this value.
Example TCP endpoint:
`12be6dbe134f-logs.3b0b424eb27f.logging.de-txl.ionos.com`
Example `HTTP` endpoint:
`https://12be6dbe134f-logs.3b0b424eb27f.logging.de-txl.ionos.com`
{% endstep %}
{% step %}
## Obtain a key
Use the `Shared_Key` (TCP) or `APIKEY` (`HTTP`) returned when you created the pipeline for authentication. To generate a new key, see [Obtain a new Key](/cloud/observability/logging-service/api-how-tos/obtain-key.md).
{% endstep %}
{% endstepper %}
## Configure Fluent Bit
Each log source requires the pipeline endpoint and a key.
{% tabs %}
{% tab title="Kubernetes" %}
1. Install the Fluent Bit package for your Kubernetes distribution. For more information, refer to the [Fluent Bit on Kubernetes Documentation](https://docs.fluentbit.io/manual/installation/downloads/kubernetes).
2. Update the Fluent Bit configuration with the `tcpAddress` and `Shared_Key`.
3. Run Fluent Bit to forward logs to the Logging Service.
```ini
[OUTPUT]
Name forward
Match *
Port 9000
Tag
Host
tls on
Shared_Key
```
{% hint style="warning" %}
**Warning:** The port must be set to **9000** when using TCP.
{% endhint %}
{% hint style="info" %}
**Note:** For more information, refer to the [Kubernetes configuration examples](https://github.com/ionos-cloud/observability-services-user-documentation/tree/main/logging/examples/kubernetes).
{% endhint %}
{% endtab %}
{% tab title="Docker" %}
1. Install the Fluent Bit package for Docker. For more information, refer to the [Fluent Bit on Docker Documentation](https://docs.fluentbit.io/manual/installation/downloads/docker).
2. Update the Fluent Bit configuration with the `tcpAddress` and `Shared_Key`.
3. Run Fluent Bit to forward logs to the Logging Service.
```ini
[OUTPUT]
Name forward
Match *
Port 9000
Tag
Host
tls on
Shared_Key
```
{% hint style="warning" %}
**Warning:** The port must be set to **9000** when using TCP.
{% endhint %}
{% hint style="info" %}
**Note:** For more information, refer to the [Docker configuration examples](https://github.com/ionos-cloud/observability-services-user-documentation/tree/main/logging/examples/docker).
{% endhint %}
{% endtab %}
{% tab title="Linux Systemd" %}
1. Install the appropriate Fluent Bit package for your Linux distribution. For more information, refer to the [Getting Started with Fluent Bit Documentation](https://docs.fluentbit.io/manual/installation/getting-started-with-fluent-bit).
2. Update the Fluent Bit configuration with the `tcpAddress` and `Shared_Key`.
3. Run Fluent Bit to forward logs to the Logging Service.
```ini
[OUTPUT]
Name forward
Match *
Port 9000
Tag
Host
tls on
Shared_Key
```
{% hint style="warning" %}
**Warning:** The port must be set to **9000** when using TCP.
{% endhint %}
{% hint style="info" %}
**Note:** For more information, refer to the [Linux Systemd configuration examples](https://github.com/ionos-cloud/observability-services-user-documentation/tree/main/logging/examples/systemd).
{% endhint %}
{% endtab %}
{% tab title="HTTP" %}
Send logs directly via the `HTTP` REST endpoint. Only JSON-formatted logs are supported.
```bash
curl --location \
--request POST 'https:///' \
--header 'Content-Type: application/json' \
--header 'APIKEY: ' \
--data '{
"status": "Ready",
"ts": 1580306777.04728,
"pod": {
"name": "Example Name",
"namespace": "data"
},
"msg": "Pod status updated",
"level": "error",
"label_1": "test label"
}'
```
Alternatively, configure Fluent Bit to use the `HTTP` output plugin:
```ini
[OUTPUT]
Name http
Match *
Host
URI /
Format json
Header APIKEY
tls on
Port 443
```
{% endtab %}
{% tab title="OTLP" %}
Send logs directly in the OpenTelemetry Protocol (OTLP) format. This does not require Fluent Bit and works with any OTLP-compliant client, including the OpenTelemetry Collector.
```bash
curl --location \
--request POST 'https:///' \
--header 'Content-Type: application/json' \
--header 'APIKEY: ' \
--data '{
"resourceLogs": [
{
"resource": {
"attributes": [
{ "key": "service.name", "value": { "stringValue": "my-payment-service" } }
]
},
"scopeLogs": [
{
"scope": { "name": "manual-http-logger" },
"logRecords": [
{
"timeUnixNano": "1780669755483587000",
"severityText": "INFO",
"severityNumber": 9,
"body": { "stringValue": "Transaction processed successfully for user_id 9482." }
}
]
}
]
}
]
}'
```
Alternatively, configure an OpenTelemetry Collector `otlphttp` exporter:
```yaml
exporters:
otlphttp:
logs_endpoint: "https:///"
headers:
APIKEY: ""
```
{% endtab %}
{% endtabs %}
## Troubleshooting
1. **Verify:** Open the Logging Service dashboard and confirm that logs appear.
2. **Invalid key:** Check that you copied the correct `Shared_Key` or `APIKEY`.
3. **Connection errors:** Verify outbound access on port **9000** (TCP) or port **443** (`HTTP`).
4. **No logs displayed:** Enable verbose logging in Fluent Bit:
```ini
[OUTPUT]
Log_Level debug
```
For more information, see [Fluent Bit global configuration](https://docs.fluentbit.io/manual/administration/configuring-fluent-bit/classic-mode/configuration-file).
---
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