# TLS Check Receiver

<!-- llms-txt-link: /llms.txt -->

> OpenTelemetry Collector receiver · contrib distribution

This receiver emits metrics about x.509 certificates.

- **Component ID**: `contrib-tlscheckreceiver`
- **Name**: `tlscheckreceiver`
- **Type**: receiver
- **Distribution**: contrib
- **Repository**: `opentelemetry-collector-contrib`

## Stability

| Level | Signals |
| --- | --- |
| alpha | metrics |

## Attributes

| Attribute | Type | Description |
| --- | --- | --- |
| `tlscheck.x509.cn` | string | The commonName in the subject of the certificate. |
| `tlscheck.x509.issuer` | string | The entity that issued the certificate. |
| `tlscheck.x509.san` | slice | The Subject Alternative Name of the certificate. |

## Data

- **JSON**: [/data/collector/components/contrib-tlscheckreceiver/contrib-tlscheckreceiver-d76fbd94d31c.json](/data/collector/components/contrib-tlscheckreceiver/contrib-tlscheckreceiver-d76fbd94d31c.json)
- **Explore**: [/collector/components/contrib/tlscheckreceiver](/collector/components/contrib/tlscheckreceiver)