# Istio Not Creating Sidecars


If Istio is not creating sidecars when you enable sidecar injection, there are a few things you can check:

1. Check if the istio-sidecar-injector webhook is running:

```bash
kubectl get mutatingwebhookconfiguration istio-sidecar-injector -n istio-system -o yaml
```

This should show the **istio-sidecar-injector** webhook with a status of **AdmissionController** and the **istio-sidecar-injector** pod running in the istio-system namespace.

2. Verify that your application deployment has the istio.io/rev annotation:

```bash
kubectl describe deployment <your-deployment> -n <your-namespace>
```

Look for the **Annotations:** section and make sure it includes the **istio.io/rev** annotation with the Istio version you have installed. For example, **istio.io/rev: 1.16.1**.

3. Verify that your application pod has the **istio-proxy** container:

```bash
kubectl describe pod <your-pod> -n <your-namespace>
```

Look for the **Containers:** section and make sure it includes the **istio-proxy** container.

4. Look for the Containers: section and make sure it includes the istio-proxy container.

```bash
kubectl get configmap istio-sidecar-injector -n istio-system -o yaml
```

Look for the **values.global.proxy.image** field and make sure it points to the Istio proxy image for the version you have installed.

If all of the above checks look good, and you're still not seeing the sidecar being injected, there may be an issue with the webhook or with the configuration of your Kubernetes cluster. You can check the logs of the **istio-sidecar-injector** pod for any errors or warnings that may indicate the issue.




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