Istio 1.6.7 install from binary failed by x509: certificate signed by unknown authority

Networking
1

Attempting to install istio 1.6.7 on Ubuntu 20.04. MicroK8s 1.18.6 already installed and the istio addon is NOT enabled (because it’s an old version 1.5.1).

Following the instructions on https://istio.io/latest/docs/setup/getting-started/#install

istio-1.6.7$ export PATH=$PWD/bin:$PATH

istio-1.6.7$ istioctl install --set profile=demo
Error: failed to apply manifests: Get "https://192.168.1.98:16443/api?timeout=32s": x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying to verify candidate authority certificate "10.152.183.1")
2

This has nothing to do with istio. It’s just mis-configuration of authentication for kubectl to access the microk8s cluster.

Solution: Where does microk8s store kubectl config file?