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Document istio-csr v0.13.0: Supported versions + Ambient service mesh #1601

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Nov 25, 2024
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Document istio-csr v0.13.0: Supported versions + Ambient service mesh #1601

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24 changes: 13 additions & 11 deletions content/docs/usage/istio-csr/installation.md
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Expand Up @@ -11,6 +11,18 @@ Note that if you're following the Platform Setup guide for OpenShift, do not run

### 0. Background

#### Supported Istio Versions

istio-csr is only tested against a subset of Istio versions, and older Istio versions are generally dropped from tests as they reach end-of-life upstream.

That said, most Istio versions work well with most istio-csr versions, and istio-csr is regularly tested against supported Istio versions for compatibility,
as well as always being tested against the latest Istio release (including Istio pre-releases).

Also note that:

- For Istio Ambient support, istio-csr `v0.12.0` or higher is required
- For Istio version 1.24 and newer, istio-csr `v0.13.0` or higher is required

#### Issuer Configuration

istio-csr uses cert-manager to issue Istio certificates, and needs to be able to reference an issuer resource to do this.
Expand Down Expand Up @@ -165,7 +177,7 @@ istioctl install -f istio-install-config.yaml
You will be prompted for input to confirm your choice of Istio profile:

```console
This will install the Istio 1.14.1 demo profile with ["Istio core" "Istiod" "Ingress gateways" "Egress gateways"] components into the cluster. Proceed? (y/N)
This will install the Istio 1.24.0 profile "demo" into the cluster. Proceed?
```
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note: I updated this to match the latest, since Istio 1.14.x is very old


Confirm your selection by entering `y` into the console to proceed with installation.
Expand Down Expand Up @@ -255,16 +267,6 @@ kubectl logs $(kubectl get pod -n $NAMESPACE -o jsonpath="{.items...metadata.nam

You should see some early logs similar to this example:

Istio v1.12 and earlier versions:

```
2022-01-13T16:51:58.495493Z info CA Endpoint cert-manager-istio-csr.cert-manager.svc:443, provider Citadel
2022-01-13T16:51:58.495817Z info Using CA cert-manager-istio-csr.cert-manager.svc:443 cert with certs: var/run/secrets/istio/root-cert.pem
2022-01-13T16:51:58.495941Z info citadelclient Citadel client using custom root cert: cert-manager-istio-csr.cert-manager.svc:443
```
Comment on lines -258 to -264
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note: This is very out of date. We don't test with any version of Istio even close to this old - seems worth removing.


Istio v1.13+

```
2022-01-13T16:51:58.495493Z info CA Endpoint cert-manager-istio-csr.cert-manager.svc:443, provider Citadel
2022-01-13T16:51:58.495817Z info Using CA cert-manager-istio-csr.cert-manager.svc:443 cert with certs: var/run/secrets/istio/root-cert.pem
Expand Down