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Lyes S edited this page Sep 26, 2021 · 32 revisions

Table Of Contents

Objective

VMs Configuration

Kubernetes Cluster with Kubeadm

Initialization

Master Node

kubeadm init

Mitsuke

Join

Worker Node(s)

kubeadm join 192.168.1.4:6443 --token vp8i2t.lzbba9edmkk6yb5t \
        --discovery-token-ca-cert-hash sha256:10e669de8d4518be18a2efb641237f58c97e966d8843398d578048c277f5aeac

Icetea

Covid

Verification

$ kubectl get nodes -o wide

NAME      STATUS   ROLES                  AGE    VERSION   INTERNAL-IP   EXTERNAL-IP   OS-IMAGE             KERNEL-VERSION     CONTAINER-RUNTIME
covid     Ready    <none>                 4d6h   v1.22.2   192.168.1.6   <none>        Ubuntu 20.04.3 LTS   5.4.0-86-generic   docker://20.10.8
ice-tea   Ready    <none>                 4d6h   v1.22.2   192.168.1.5   <none>        Ubuntu 20.04.3 LTS   5.4.0-86-generic   docker://20.10.8
mitsuke   Ready    control-plane,master   4d6h   v1.22.2   192.168.1.4   <none>        Ubuntu 20.04.3 LTS   5.4.0-86-generic   docker://20.10.8

Deployment

Calico

NAME                                           READY   STATUS    RESTARTS       AGE     IP               NODE      NOMINATED NODE   READINESS GATES
pod/calico-kube-controllers-69d59fc77d-hp67m   1/1     Running   4 (46m ago)    40h     172.16.187.66    ice-tea   <none>           <none>
pod/calico-node-jxtzk                          1/1     Running   2 (15h ago)    40h     192.168.1.5      ice-tea   <none>           <none>
pod/calico-node-ngjtr                          1/1     Running   2 (15h ago)    40h     192.168.1.6      covid     <none>           <none>
pod/calico-node-txrkf                          1/1     Running   2 (15h ago)    40h     192.168.1.4      mitsuke   <none>           <none>


NAME                         DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR            AGE     CONTAINERS    IMAGES                          SELECTOR
daemonset.apps/calico-node   3         3         3       3            3           kubernetes.io/os=linux   4d22h   calico-node   docker.io/calico/node:v3.20.1   k8s-app=calico-node

NAME                                      READY   UP-TO-DATE   AVAILABLE   AGE     CONTAINERS                IMAGES                                      SELECTOR
deployment.apps/calico-kube-controllers   1/1     1            1           4d22h   calico-kube-controllers   docker.io/calico/kube-controllers:v3.20.1   k8s-app=calico-kube-controllers

NAME                                                 DESIRED   CURRENT   READY   AGE     CONTAINERS                IMAGES                                      SELECTOR
replicaset.apps/calico-kube-controllers-69d59fc77d   1         1         1       40h     calico-kube-controllers   docker.io/calico/kube-controllers:v3.20.1   k8s-app=calico-kube-controllers,pod-template-hash=69d59fc77d

MetalLB

Installation

Configuration

apiVersion: v1
kind: ConfigMap
metadata:
  namespace: metallb-system
  name: config
data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
      - 192.168.1.240-192.168.1.254

$ kubectl get all -n metallb-system -o wide
NAME                              READY   STATUS    RESTARTS       AGE     IP             NODE      NOMINATED NODE   READINESS GATES
pod/controller-6b78bff7d9-wlf44   1/1     Running   2 (15h ago)    40h     172.16.38.93   covid     <none>           <none>
pod/speaker-5k6f7                 1/1     Running   11 (15h ago)   3d23h   192.168.1.6    covid     <none>           <none>
pod/speaker-95vdh                 1/1     Running   13 (15h ago)   3d23h   192.168.1.4    mitsuke   <none>           <none>
pod/speaker-wz2fj                 1/1     Running   12 (15h ago)   3d23h   192.168.1.5    ice-tea   <none>           <none>

NAME                     DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR            AGE     CONTAINERS   IMAGES                            SELECTOR
daemonset.apps/speaker   3         3         3       3            3           kubernetes.io/os=linux   3d23h   speaker      quay.io/metallb/speaker:v0.10.2   app=metallb,component=speaker

NAME                         READY   UP-TO-DATE   AVAILABLE   AGE     CONTAINERS   IMAGES                               SELECTOR
deployment.apps/controller   1/1     1            1           3d23h   controller   quay.io/metallb/controller:v0.10.2   app=metallb,component=controller

NAME                                    DESIRED   CURRENT   READY   AGE     CONTAINERS   IMAGES                               SELECTOR
replicaset.apps/controller-6b78bff7d9   1         1         1       3d23h   controller   quay.io/metallb/controller:v0.10.2   app=metallb,component=controller,pod-template-hash=6b78bff7d9

Kubernetes Ingress ngix

Configuration and Installation Using Helm 3

helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx

helm repo update

helm show values ingress-nginx/ingress-nginx > /tmp/ingress-nginx.yml

vi /tmp/ingress-nginx.yml
  • Host Network: true
  # Required for use with CNI based kubernetes installations (such as ones set up by kubeadm),
  # since CNI and hostport don't mix yet. Can be deprecated once https://github.com/kubernetes/kubernetes/issues/23920
  # is merged
  hostNetwork: false
  • Host Port Enabled: true
  ## Use host ports 80 and 443
  ## Disabled by default
  ##
  hostPort:
    enabled: false
    ports:
      http: 80
      https: 443
  • Kind: DaemonSet
  ## DaemonSet or Deployment
  ##
  kind: Deployment
  • Install
kubectl create namespace ingress-nginx

helm install my-ingress ingress-nginx/ingress-nginx -n ingress-nginx --values /tmp/ingress-nginx.yml

$ kubectl get all -n ingress-nginx -o wide
NAME                                            READY   STATUS    RESTARTS      AGE   IP            NODE      NOMINATED NODE   READINESS GATES
pod/my-ingress-ingress-nginx-controller-cdtld   1/1     Running   1 (16h ago)   16h   192.168.1.5   ice-tea   <none>           <none>
pod/my-ingress-ingress-nginx-controller-v5mzv   1/1     Running   1 (16h ago)   16h   192.168.1.6   covid     <none>           <none>

NAME                                                    TYPE           CLUSTER-IP       EXTERNAL-IP     PORT(S)                      AGE     SELECTOR
service/my-ingress-ingress-nginx-controller             LoadBalancer   10.101.25.246    192.168.1.240   80:31749/TCP,443:30044/TCP   2d19h   app.kubernetes.io/component=controller,app.kubernetes.io/instance=my-ingress,app.kubernetes.io/name=ingress-nginx
service/my-ingress-ingress-nginx-controller-admission   ClusterIP      10.101.184.186   <none>          443/TCP                      2d19h   app.kubernetes.io/component=controller,app.kubernetes.io/instance=my-ingress,app.kubernetes.io/name=ingress-nginx

NAME                                                 DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE SELECTOR            AGE     CONTAINERS   IMAGES                                                                                                               SELECTOR
daemonset.apps/my-ingress-ingress-nginx-controller   2         2         2       2            2           kubernetes.io/os=linux   2d19h   controller   k8s.gcr.io/ingress-nginx/controller:v1.0.1@sha256:26bbd57f32bac3b30f90373005ef669aae324a4de4c19588a13ddba399c6664e   app.kubernetes.io/component=controller,app.kubernetes.io/instance=my-ingress,app.kubernetes.io/name=ingress-nginx

Publisher/Subscriber

$ kubectl apply -f k8s/

service/apache-activemq created
deployment.apps/apache-activemq created
configmap/config unchanged
namespace/k8s unchanged
service/openzipkin-zipkin created
deployment.apps/openzipkin-zipkin created
service/publisher-service created
deployment.apps/publisher-service created
configmap/publisher-subscriber-config created
ingress.networking.k8s.io/publisher-subscriber-ingress created
secret/secret created
service/subscriber-service created
deployment.apps/subscriber-service created

$ kubectl get all -n k8s -o wide

NAME                                      READY   STATUS    RESTARTS   AGE     IP               NODE      NOMINATED NODE   READINESS GATES
pod/apache-activemq-7fcfdcc7f7-rkzmq      1/1     Running   0          2m39s   172.16.38.97     covid     <none>           <none>
pod/openzipkin-zipkin-75c5c4f5b4-9k9rk    1/1     Running   0          2m39s   172.16.187.126   ice-tea   <none>           <none>
pod/publisher-service-7dcd967b9d-6mdls    1/1     Running   0          2m39s   172.16.187.70    ice-tea   <none>           <none>
pod/publisher-service-7dcd967b9d-tb77x    1/1     Running   0          2m39s   172.16.38.96     covid     <none>           <none>
pod/publisher-service-7dcd967b9d-vh9wh    1/1     Running   0          2m39s   172.16.38.95     covid     <none>           <none>
pod/subscriber-service-556b6c7cf6-9tnc5   1/1     Running   0          2m39s   172.16.187.73    ice-tea   <none>           <none>
pod/subscriber-service-556b6c7cf6-d7lwg   1/1     Running   0          2m39s   172.16.187.71    ice-tea   <none>           <none>
pod/subscriber-service-556b6c7cf6-qltg4   1/1     Running   0          2m39s   172.16.38.94     covid     <none>           <none>

NAME                         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)              AGE     SELECTOR
service/apache-activemq      ClusterIP   10.110.179.217   <none>        8161/TCP,61616/TCP   2m40s   app=apache-activemq
service/openzipkin-zipkin    ClusterIP   10.111.137.119   <none>        9411/TCP             2m39s   app=openzipkin-zipkin
service/publisher-service    ClusterIP   10.96.66.134     <none>        8080/TCP             2m39s   app=publisher-service
service/subscriber-service   ClusterIP   10.101.36.223    <none>        8080/TCP             2m39s   app=subscriber-service

NAME                                 READY   UP-TO-DATE   AVAILABLE   AGE     CONTAINERS          IMAGES                               SELECTOR
deployment.apps/apache-activemq      1/1     1            1           2m39s   apache-activemq     lsefiane/activemq:5.16.2-alpine      app=apache-activemq
deployment.apps/openzipkin-zipkin    1/1     1            1           2m39s   openzipkin-zipkin   openzipkin/zipkin:latest             app=openzipkin-zipkin
deployment.apps/publisher-service    3/3     3            3           2m39s   publisher-service   lsefiane/publisher-service:latest    app=publisher-service
deployment.apps/subscriber-service   3/3     3            3           2m39s   publisher-service   lsefiane/subscriber-service:latest   app=subscriber-service

NAME                                            DESIRED   CURRENT   READY   AGE     CONTAINERS          IMAGES                               SELECTOR
replicaset.apps/apache-activemq-7fcfdcc7f7      1         1         1       2m39s   apache-activemq     lsefiane/activemq:5.16.2-alpine      app=apache-activemq,pod-template-hash=7fcfdcc7f7
replicaset.apps/openzipkin-zipkin-75c5c4f5b4    1         1         1       2m39s   openzipkin-zipkin   openzipkin/zipkin:latest             app=openzipkin-zipkin,pod-template-hash=75c5c4f5b4
replicaset.apps/publisher-service-7dcd967b9d    3         3         3       2m39s   publisher-service   lsefiane/publisher-service:latest    app=publisher-service,pod-template-hash=7dcd967b9d
replicaset.apps/subscriber-service-556b6c7cf6   3         3         3       2m39s   publisher-service   lsefiane/subscriber-service:latest   app=subscriber-service,pod-template-hash=556b6c7cf6

Kubernetes Dashboard

kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.3.1/aio/deploy/recommended.yaml

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