# Kubernetes event logs

To stream Kubernetes events into your workspace startup logs, you can use
Coder's [`coder-logstream-kube`](https://github.com/coder/coder-logstream-kube)
tool. `coder-logstream-kube` provides useful information about the workspace pod
or deployment, such as:

- Causes of pod provisioning failures, or why a pod is stuck in a pending state.
- Visibility into when pods are OOMKilled, or when they are evicted.

## Installation

Install the `coder-logstream-kube` helm chart on the cluster where the
deployment is running.

```shell
helm repo add coder-logstream-kube https://helm.coder.com/logstream-kube
helm install coder-logstream-kube coder-logstream-kube/coder-logstream-kube \
    --namespace coder \
    --set url=<your-coder-url-including-http-or-https>
```

## Example logs

Here is an example of the logs you can expect to see in the workspace startup
logs:

### Normal pod deployment

![normal pod deployment](https://raw.githubusercontent.com/coder/coder/main/docs/images/admin/integrations/coder-logstream-kube-logs-normal.png)

### Wrong image

![Wrong image name](https://raw.githubusercontent.com/coder/coder/main/docs/images/admin/integrations/coder-logstream-kube-logs-wrong-image.png)

### Kubernetes quota exceeded

![Kubernetes quota exceeded](https://raw.githubusercontent.com/coder/coder/main/docs/images/admin/integrations/coder-logstream-kube-logs-quota-exceeded.png)

### Pod crash loop

![Pod crash loop](https://raw.githubusercontent.com/coder/coder/main/docs/images/admin/integrations/coder-logstream-kube-logs-pod-crashed.png)

## How it works

Kubernetes provides an
[informers](https://pkg.go.dev/k8s.io/client-go/informers) API that streams pod
and event data from the API server.

coder-logstream-kube listens for pod creation events with containers that have
the CODER_AGENT_TOKEN environment variable set. All pod events are streamed as
logs to the Coder API using the agent token for authentication. For more
details, see the
[coder-logstream-kube](https://github.com/coder/coder-logstream-kube)
repository.