kubernetes setup

gistfile1.txt

# ubuntu 16.04 used on all nodes

# all your nodes must have static ip in local network
# all your nodes must no have enabled swap partition

# perform this on all nodes:

apt update && apt upgrade -y
apt install -y docker.io
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" > /etc/apt/sources.list.d/kubernetes.list
apt update && apt install -y kubelet kubeadm kubectl

# run this on your master:

kubeadm init --pod-network-cidr=10.244.0.0/16 --apiserver-advertise-address=<master static ip>
# save last ~10 strings of otput with command for joining slave nodes

mkdir $HOME/.kube
cp -i /etc/kubernetes/admin.conf .kube/config

# enable bridging
echo "net.bridge.bridge-nf-call-iptables=1" >> /etc/sysctl.conf
sysctl -p

# apply weave net addon
kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"

# on slave node run saved previously command "kubeadm join...."

# dashboard
# on your local machine install kubectl
curl -Lo kubectl https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && chmod +x kubectl && sudo cp kubectl /usr/local/bin/ && rm kubectl

# copy ~/.kube/config from master to your local machine with same path and name
# create somwhere directory for your yml files, for example ~/myKubeYmls
# check connection with this command
kubectl cluster-info

# apply dashboard
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml

# run proxy on master node
kubectl proxy --accept-hosts='^.*$' --address='{your_server_ip}' &

# back on your local machine
cd ~/myKubeYmls

# create ~/myKubeYmls/dashboard-admin.yml with this contents:

apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard
  labels:
    k8s-app: kubernetes-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: kubernetes-dashboard
  namespace: kube-system

#EOF

# run this to create role binding resource
kubectl create -f dashboard-admin.yml

# now you can access dashboard in your browser http://{your kubernetes master hostname}:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/