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Merge pull request #1517 from catherineluse/istio-edits

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Add clarifications to Istio docs
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Denise
2019-06-18 16:15:23 -07:00
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parent 44930ef252 ac476af1e6
commit bcaaeea010
2 changed files with 19 additions and 8 deletions
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content/rancher/v2.x/en/project-admin/istio/_index.md
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---
title: Istio
title: How to Use Istio in Your Project
weight: 3528
---
@@ -7,6 +7,8 @@ _Available as of v2.3.0-alpha4_
Using Rancher, you can connect, secure, control, and observe services through integration with [Istio](https://istio.io/), a leading open-source service mesh solution. Istio provides behavioral insights and operational control over the service mesh as a whole, offering a complete solution to satisfy the diverse requirements of microservice applications.
Istio requires each pod in the service mesh to run an Istio compatible sidecar. This section describes how to set up Istio sidecar auto injection in the Rancher UI. For more information on the Istio sidecar, refer to the [Istio docs](https://istio.io/docs/setup/kubernetes/additional-setup/sidecar-injection/).
>**Prerequisites:**
>
>- [Istio]({{< baseurl >}}/rancher/v2.x/en/cluster-admin/tools/istio/) must be enabled in the cluster.
@@ -14,11 +16,13 @@ Using Rancher, you can connect, secure, control, and observe services through in
## Istio Sidecar Auto Injection
If an Istio sidecar is not injected into a pod, Istio will not work for that pod. If you enable Istio sidecar auto injection for a namespace, all pods created in the namespace will have an injected Istio sidecar.
In the create and edit namespace page, you can enable or disable [Istio sidecar auto injection](https://istio.io/blog/2019/data-plane-setup/#automatic-injection). When you enable it, Rancher will add `istio-injection=enabled` label to the namespace automatically.
After the `istio-injection=enabled` label is added to the namespace, all pods that are created in the namespace will have an injected Istio sidecar.
Injection occurs at pod creation time. If the pod has been created before you enable auto injection, you need to kill the running pod and verify that a new pod is created with the injected sidecar.
> **Note:** Injection occurs at pod creation time. If the pod has been created before you enable auto injection. You need to kill the running pod and verify a new pod is created with the injected sidecar.
For information on how to inject the Istio sidecar manually, refer to the [Istio docs](https://istio.io/docs/setup/kubernetes/additional-setup/sidecar-injection/).
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