Bump istio installation

[aerosouund]

What this PR does / why we need it:

Bump Istio to the latest stable release

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #1324

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[aerosouund]

/test check-provision-k8s-1.29

[mhenriks]

@aerosouund thanks for taking a crack at this! I am very keen to get this in. Do you need any help? The current version we are using is very old, and is not compatible with kubevirt/kubevirt#13422. The istio sidecar injection code is somehow stealing the runStrategy: Always bit from virt-tail. And since the istio container is not meant to always run, the virt-luancher pod never gets to running state.

cc @EdDev

[aerosouund]

@mhenriks
Thanks alot, I am facing a small challenge where after installation, checking the IstioOperator resource says that such a resource doesn't exist.
I am suspecting its because many things changed between the version we had and the version i am introducing 1.15 >> 1.24
I just need to check whats going on, but likely its not a big deal. I will ping you if i need any assistance!

[aerosouund]

On inspecting the cluster post running istioctl install -y (the operator init has been deprecated) it seems it the IstioOperator resource is no longer used

[vagrant@node01 ~]$ sudo kubectl --kubeconfig=/etc/kubernetes/admin.conf api-resources | grep istio
wasmplugins                                      extensions.istio.io/v1alpha1      true         WasmPlugin
destinationrules                    dr           networking.istio.io/v1            true         DestinationRule
envoyfilters                                     networking.istio.io/v1alpha3      true         EnvoyFilter
gateways                            gw           networking.istio.io/v1            true         Gateway
proxyconfigs                                     networking.istio.io/v1beta1       true         ProxyConfig
serviceentries                      se           networking.istio.io/v1            true         ServiceEntry
sidecars                                         networking.istio.io/v1            true         Sidecar
virtualservices                     vs           networking.istio.io/v1            true         VirtualService
workloadentries                     we           networking.istio.io/v1            true         WorkloadEntry
workloadgroups                      wg           networking.istio.io/v1            true         WorkloadGroup
authorizationpolicies               ap           security.istio.io/v1              true         AuthorizationPolicy
peerauthentications                 pa           security.istio.io/v1              true         PeerAuthentication
requestauthentications              ra           security.istio.io/v1              true         RequestAuthentication
telemetries                         telemetry    telemetry.istio.io/v1             true         Telemetry

With that said, the yaml files we use to install the operator will no longer work (istio-operator.cr.yaml & istio-operator-with-cnao.cr.yaml)
This signifies a huge migration from what we have, previously what you would have in the cluster is

[vagrant@node01 ~]$ sudo kubectl --kubeconfig=/etc/kubernetes/admin.conf get pods -A | grep istio
istio-operator   istio-operator-6c4fc4d784-2qqff            1/1     Running   0          2m50s
istio-system     istio-egressgateway-79c995f7cb-w4ppg       1/1     Running   0          88s
istio-system     istio-ingressgateway-775fdbc456-qq5cn      1/1     Running   0          88s
istio-system     istiod-5857496459-cnz5t                    1/1     Running   0          92s
kube-system      istio-cni-node-l99td                       1/1     Running   0          88s

After the upgrade, you only get

[vagrant@node01 ~]$ sudo kubectl --kubeconfig=/etc/kubernetes/admin.conf get pods -A | grep istio
istio-system   istio-ingressgateway-5f9df778cc-bl9sw      1/1     Running   0          33m
istio-system   istiod-69d6bb74c-z6fqk                     1/1     Running   0          34m

So we need to know how to get the same as what we had before in the previous version using 1.24. I might need help from the network team on this

cc: @oshoval @EdDev

[aerosouund]

Alternatively, we may not jump to 1.24. Maybe a lesser version that still behaves similar to 1.15 and has the things you want supported.
Needs a discussion for sure

[oshoval]

I am not familiar at all with Istio tbh, and currently on few other tasks,
if discussion will be still needed, i will try once i can, thanks

[aerosouund]

@oshoval
based on what changed across the deployments three questions need answered:

• is the egressgateway still needed or used ? has it's functionality been ported to any of the other components ?
• is the istiocni now being installed separately from the operator ? is yes, how ?
• would it be better to not skip to a very high version and upgrade to something intermediate? e.g: 1.18

[oshoval]

the first two need deeper understanding that i dont have now sorry,
if the 3rd helps advancing, lets go for that first thing, wdyt?
knowing where it stopped working, can also assist in debug latest sometimes

[aerosouund]

@mhenriks
whats the minimum compatible version that will contain the features you want ?

[mhenriks]

@mhenriks whats the minimum compatible version that will contain the features you want ?

1.20 is the oldest version that supports 1.29 (SideCar featuregate enabled) so that would be the minimum. But obviously latest would be best

https://istio.io/latest/docs/releases/supported-releases/#support-status-of-istio-releases

[ormergi]

* is the egressgateway still needed or used ? has it's functionality been ported to any of the other components ?

It seem we dont use in in e2e tests, we do use ingress-gateway though Istio API
https://github.com/kubevirt/kubevirt/blob/94d03645710c55dd35cf752bf6709bfb333518ad/tests/network/vmi_istio.go#L640
https://istio.io/latest/docs/setup/additional-setup/gateway/#deploying-a-gateway

* is the istiocni now being installed separately from the operator ? is yes, how ?

From what I remember Istio operator account for deploying its CNI, we have no dedicated scripting for doing that.
Check out https://istio.io/latest/docs/setup/additional-setup/cni/#installing-the-cni-node-agent

* would it be better to not skip to a very high version and upgrade to something intermediate? e.g: 1.18

Please note kubevirt e2e tests relays on the sidecar injection functionally.

I suggest to test this PR on kubevirt/kubevirt on sig-network lane so we can see where it fails and realize what our options.

[aerosouund]

@mhenriks @ormergi
Ok, based on this i will move the check for the IstioOperator resource (which is what's failing the tests here) and devise a way to install the CNI. Then we can run it against the sig network lane and see how it goes

[ormergi]

According to #1331 (comment) attached artifacts we see istio+passt tests are failing due to bug in Istio.
I posted a PR to quarantine the failing tests, once we have a workaround or bug fix we can un-quarentine them.
PTAL kubevirt/kubevirt#13924

[ormergi]

Hi, I managed to make istio 1.24.3 work with the following config:

apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
metadata:
  namespace: istio-system
  name: istio-operator
spec:
  profile: demo
  components:
    cni:
      enabled: true
      namespace: kube-system
      k8s:
        securityContext:
          seLinuxOptions:
            type: spc_t
  values:
    global:
      jwtPolicy: third-party-jwt
    cni:
      chained: false
      cniBinDir: /opt/cni/bin
      cniConfDir: /etc/cni/multus/net.d
      excludeNamespaces:
       - istio-system
       - kube-system
      logLevel: debug
    pilot:
      cni:
        enabled: true
        provider: "multus"
    sidecarInjectorWebhook:
      injectedAnnotations:
        k8s.v1.cni.cncf.io/networks: istio-cni

Missing part was setting Isito CNI pods with seLinuxOptions spc_t, following discussion at istio/istio#54815
@aerosouund @brianmcarey

[aerosouund]

@ormergi
Great work! Will push this to the branch ASAP. Do you prefer to stick with 1.23 or do we use 1.24?

[ormergi]

. Do you prefer to stick with 1.23 or do we use 1.24?

I prefer newer version, but if its a trouble we can start with 1.23

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[aerosouund]

/retest-required

[kubevirt-bot]

@aerosouund: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
check-provision-k8s-1.29	ac32724	link	true	/test check-provision-k8s-1.29
check-provision-k8s-1.32	d9eec16	link	true	/test check-provision-k8s-1.32

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