tidy up for the example configuration of k8s

k8s/demo/configmap/configmap.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: special-config
+  namespace: default
+data:
+  special.how: very
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: env-config
+  namespace: default
+data:
+  log_level: INFO

k8s/demo/nginx.yaml → k8s/demo/deployment/nginx.yaml

@@ -1,18 +1,21 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: nginx0-deployment
+  name: nginx-deployment
   labels:
-    app: nginx0-deployment
+    app: nginx
 spec:
-  replicas: 2
+  replicas: 3
+  selector:
+    matchLabels:
+      app: nginx
   template:
     metadata:
       labels:
-        app: nginx0
+        app: nginx
     spec:
       containers:
       - name: nginx
-        image: k8s.gcr.io/nginx:1.7.9
+        image: nginx:1.7.9
         ports:
         - containerPort: 80

k8s/demo/role/role.yaml

@@ -0,0 +1,9 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  namespace: default
+  name: pod-reader
+rules:
+- apiGroups: [""] # "" indicates the core API group
+  resources: ["pods"]
+  verbs: ["get", "watch", "list"]

k8s/demo/scripts/install.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+sudo swapoff -a
+
+# install docker
+sudo apt-get remove docker docker-engine docker.io containerd runc
+sudo apt-get update
+sudo apt-get install \
+    apt-transport-https \
+    ca-certificates \
+    curl \
+    gnupg-agent \
+    software-properties-common
+
+
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
+sudo apt-key fingerprint 0EBFCD88
+
+# on arm
+sudo add-apt-repository \
+   "deb [arch=arm64] https://download.docker.com/linux/ubuntu \
+   $(lsb_release -cs) \
+   stable"
+sudo apt-get update
+sudo apt-get install docker-ce docker-ce-cli containerd.io
+# do a sanity check
+sudo docker run hello-world
+
+# install kubeadm/kubectl
+apt-get update && apt-get install -y apt-transport-https curl
+curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
+cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
+deb https://apt.kubernetes.io/ kubernetes-xenial main
+EOF
+apt-get update
+apt-get install -y kubelet kubeadm kubectl
+apt-mark hold kubelet kubeadm kubectl
+
+# setup cluster with kubeadm
+
+# replace "10.169.40.58" with your host IP
+kubeadm init --apiserver-advertise-address 10.169.40.58 --pod-network-cidr=10.244.0.0/16
+kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/62e44c867a2846fefb68bd5f178daf4da3095ccb/Documentation/kube-flannel.yml
+
+# make it work for non-root user, might need to remove the cofig file
+mkdir -p $HOME/.kube
+sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
+sudo chown $(id -u):$(id -g) $HOME/.kube/config
+
+
+# join other nodes
+#kubeadm join xxx --token xxx --discovery-token-ca-cert-hash xxx