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Deploying multiple nodes with Kubeadm

Preparing Environment

OS: Ubuntu 16.04 LTS

Master Node:

  • enp0s3: NAT (Access to Internet)
  • enp0s8:
    • Host Only
    • 192.168.205.10 (Master Node IP)

Worker Node:

  • enp0s3: NAT (Access to Internet)
  • enp0s8:
    • Host Only
    • 192.168.205.11 (Worker Node IP)

Configure static ip for enp0s8 interface:

$ sudo vim /etc/network/interfaces
...
auto enp0s8
iface enp0s8 inet static
address 192.168.205.10
netmask 255.255.255.0

Configure proxy for apt:

$ sudo vim /etc/apt/apt.conf
...
Acquire::http::proxy "http://[Proxy_Server]:[Proxy_Port]/";                                                                                                                                                
Acquire::HTTP::proxy "http://[Proxy_Server]:[Proxy_Port]/";

Configure proxy for docker:

$ sudo mkdir -p /etc/systemd/system/docker.service.d
$ sudo vim /etc/systemd/system/docker.service.d/http-proxy.conf

[Service]
Environment="HTTP_PROXY=http://[Proxy_Server]:[Proxy_Port]/"

Disable swap memory usage with the following command:

swapoff -a

Installation & Deploy

Adding kubernetes repo:

$ echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" >> ~/kubernetes.list
$ sudo mv ~/kubernetes.list /etc/apt/sources.list.d
$ sudo apt-get update

Install docker kubelet kubeadm kubectl kubernetes-cni for each node:

$ sudo apt-get install -y docker.io kubelet kubeadm kubectl kubernetes-cni --allow-unauthenticated

Deploy Master node:

annp@k8s-master$ sudo kubeadm init --apiserver-advertise-address=192.168.205.10

Apply a pods network:

annp@k8s-master$ kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml

Join cluster for worker node:

annp@k8s-worker$ kubeadm join 192.168.205.10:6443 --token 2r1hcb.aa7rqdfi6rfasfqo --discovery-token-ca-cert-hash sha256:e8b11f2fe6cb313cd605ffb4eb506cb9d8dffc332af5b3f77015fefb245cd13b

Happy Learning!