Kubernetes - Historial de revisió

Marti: /* Day 3 */

2019-01-17T15:28:45Z

Day 3

← Versió més antiga		Revisió del 15:28, 17 gen 2019
Línia 256:		Línia 256:

	===Day 3===		===Day 3===


			https://github.com/helm/helm/releases



			kubectl create ns tiller

			./helm init --tiller-namespace tiller

			copy ingress to local disc:

			./helm fetch <chartname>
			./helm fetch stable-nginx-ingress




			helm install -f values.yaml --name <reponame>/<chartname> <deploymentname>

			kubehelm install -f values.yaml --name stable/nginx-ingress --name ingressmarti --tiller-namespace tiller


			https://hub.kubeapps.com

			helm install -f values.yaml stable/nginx-ingress --name nginx --dry-run --tiller-namespace tiller



			helm create <chartname>



			Deployment:https://pastebin.com/S6GmXdYm

			<pre>
			apiVersion: extensions/v1beta1
			kind: Deployment
			metadata:
			name: coffee
			spec:
			replicas: 2
			selector:
			matchLabels:
			app: coffee
			template:
			metadata:
			labels:
			app: coffee
			spec:
			strategy:
			type: RollingUpdate
			rollingUpdate:
			maxSurge: 2
			maxUnavailable: 0
			containers:
			- name: coffee
			image: nginxdemos/hello:plain-text
			ports:
			- containerPort: 80

			</pre>



			Ingress: https://pastebin.com/Rd7aNTF7

			<pre>
			apiVersion: extensions/v1beta1
			kind: Ingress
			metadata:
			name: cafe-ingress
			spec:
			rules:
			- host: cafe.example.com
			http:
			paths:
			- path: /coffee
			backend:
			serviceName: coffee-svc
			servicePort: 80

			</pre>


			Service: https://pastebin.com/qvU2Q5u4


			<pre>
			apiVersion: v1
			kind: Service
			metadata:
			name: coffee-svc
			spec:
			ports:
			- port: 80
			targetPort: 80
			protocol: TCP
			name: http
			selector:
			app: coffee


			</pre>

Marti a 10:56, 17 gen 2019

2019-01-17T10:56:58Z

@@ Línia 1: / Línia 1: @@
 ==Kubernetes Administration training==
 https://pastebin.com/D1WrNMew
@@ Línia 242: / Línia 251: @@
   kubectl describe ubuntu-deployment-5b6896777c-4lv8g

Marti: /* Kubernetes Administration training */

2019-01-17T10:49:42Z

Kubernetes Administration training

@@ Línia 2: / Línia 2: @@
 ==Kubernetes Administration training==
 https://pastebin.com/D1WrNMew
@@ Línia 139: / Línia 137: @@
 For troubleshooting:
      docker ps
      kubectl get pods -n kube-system
+To see why a pod crashed:
+    kubectl describe -n kube-system pod kubernetes-dashboard-57df4db6b-n5wmm
@@ Línia 158: / Línia 160: @@
    policyTypes:
    - Ingress
 apiVersion: networking.k8s.io/v1
@@ Línia 178: / Línia 183: @@
 </pre>

Marti: /* Kubernetes Administration training */

2019-01-16T15:06:21Z

Kubernetes Administration training

@@ Línia 3: / Línia 3: @@
 ==Kubernetes Administration training==
-Two machines/nodes for testing.
+https://pastebin.com/D1WrNMew
 On the Master node:
@@ Línia 40: / Línia 42: @@
 </pre>
 On the Worker Node:
@@ Línia 56: / Línia 72: @@
 apt-get install -y kubelet kubeadm kubernetes-cni
 systemctl enable docker.service
 kubeadm join <connection parameters>
 </pre>
 Create the following file marti.yaml:
@@ Línia 111: / Línia 131: @@
 Using Firefox try to connect to the the dashboard using the public ip:30080
-To know which token run on the master:
+To know which token to use in login, run on the master:
   # kubectl -n martinamespace describe secret $(kubectl -n kube-system get secret | grep martiusername | awk ' {print $1}')
   kubectl -n martinamespace describe secret $(kubectl -n martinamespace get secret | grep martiusername | awk ' {print $1}')

Marti: Es crea la pàgina amb « ==Kubernetes Administration training== https://beta.etherpad.org/p/cgi Two machines/nodes for testing. On the Master node:

 sudo apt-get update sudo apt-ge...».

2019-01-16T14:45:51Z

Es crea la pàgina amb « ==Kubernetes Administration training== https://beta.etherpad.org/p/cgi Two machines/nodes for testing. On the Master node: <pre> sudo apt-get update sudo apt-ge...».

Pàgina nova

==Kubernetes Administration training==

https://beta.etherpad.org/p/cgi

Two machines/nodes for testing.

On the Master node:

<pre>
sudo apt-get update
sudo apt-get install -y apt-transport-https
sudo su -
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 http://apt.kubernetes.io/ kubernetes-xenial main
EOF

apt-get update
apt-get install -y docker.io
apt-get install -y kubelet kubeadm kubectl kubernetes-cni
systemctl enable docker.service
# kubeadm init

# only one of the following 3:
# WEAVE
kubeadm init
kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"

#flanel
kubeadm init --pod-network-cidr=10.244.0.0/16
kubectl apply -f "https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml"

# calico
kubeadm init --pod-network-cidr=10.233.64.0/18
kubectl apply -f "https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml"
kubectl apply -f "https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml"

</pre>

On the Worker Node:

<pre>
sudo apt-get update
sudo apt-get install -y apt-transport-https
sudo su -
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 http://apt.kubernetes.io/ kubernetes-xenial main
EOF

apt-get update
apt-get install -y docker.io
apt-get install -y kubelet kubeadm kubernetes-cni
systemctl enable docker.service
kubeadm join <connection parameters>

</pre>

Create the following file marti.yaml:

<pre>
apiVersion: v1
kind: ServiceAccount
metadata:
name: martiusername
namespace: martinamespace

---

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: martiusername
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: martiusername
namesapce: martinamespace

</pre>

Execute it with:
kubectl create -f marti.yaml

Instead of:
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v1.10.1/src/deploy/recommended/kubernetes-dashboard.yaml

Download https://raw.githubusercontent.com/kubernetes/dashboard/v1.10.1/src/deploy/recommended/kubernetes-dashboard.yaml and replace the last part with:
<pre>
spec:
type: NodePort
ports:
- port: 8443
nodePort: 30080
</pre>

kubectl apply -f kubernetes-dashboard-EDITED.yaml

Using Firefox try to connect to the the dashboard using the public ip:30080

To know which token run on the master:

# kubectl -n martinamespace describe secret $(kubectl -n kube-system get secret | grep martiusername | awk ' {print $1}')
kubectl -n martinamespace describe secret $(kubectl -n martinamespace get secret | grep martiusername | awk ' {print $1}')