Kubernetes TLS certificate errors

Error:
Unable to connect to the server: x509: certificate signed by unknown authority

Fix:
unset KUBECONFIG
export KUBECONFIG=/etc/kubernetes/admin.conf

mv  $HOME/.kube $HOME/.kube.bak
mkdir $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

Sudo without password in Ubuntu/Debian

sudo visudo

user ALL=(ALL) NOPASSWD:ALL

MacOS Connect to KVM

Install:

brew tap jeffreywildman/homebrew-virt-manager
brew install virt-manager virt-viewer libvirt

Fix error (g-io-error-quark: Error opening file /usr/local/Cellar/libosinfo/1.7.1/share/libosinfo/pci.ids: No such file or directory (1)):

mkdir -p /usr/local/Cellar/libosinfo/1.7.1/share/libosinfo/

cd /usr/local/Cellar/libosinfo/1.7.1/share/libosinfo/

wget https://pci-ids.ucw.cz/v2.2/pci.ids

wget http://www.linux-usb.org/usb.ids

Copy ssh key:
ssh-copy-id -i ~/.ssh/id_rsa.pub user@ip_address

Connect:

virt-manager -c 'qemu+ssh://user@ip_address/system?socket=/var/run/libvirt/libvirt-sock'