Istio CNI integration with Istio 1.0.x

[rafik8]

Hi Team,

I come across a discussion on github that some members had successfully installed istio CNI (version 0.1.0) with Istio 1.0.4: https://github.com/istio/old_issues_repo/issues/316#issuecomment-456075750.

I would like to know if CNI plugin is enough stable to be used and if there is any plan to be supported for Istio 1.0.x. What I have understand from the Status of Istio 1.1 thread that it will experimental in Istio 1.1.

[tiswanso]

Hi @rafik8,

Sorry for the late reply. I was not monitoring discuss.istio.io much prior to 1.1 release.

As you mention the Istio CNI is indeed officially experimental for 1.1. That being said, the primary integration is with the installation and the setup of the istio-sidecar-injector configmap. So, the Istio CNI 0.1.0 should be usable with Istio 1.0.x as long as the istio-sidecar-injector configmap is modified to remove the istio-init from initContainers section of the template.

See the following discussion for more explanation on modifying the istio-sidecar-injector configmap:

Installing CNI - update sidecar config

Hi Sourabh, To make sure I understand, you want to modify an existing Istio install’s istio-sidecar-injector configmap to enable Istio CNI, right? If that’s the case, what needs to be done is to edit the template and remove the istio-init entry in the initContainers section. That will allow you to use auto-sidecar injection OR istioctl as shown in the Istio CNI install guide. You can see a detailed example of what the istio_cni.enabled=true helm setting does via: ~/tmp/istio/istio-1.1.1 hel…

[rafik8]

thank you @tiswanso for the updates!