diff --git a/.drone.yml b/.drone.yml
index df36a74..06cbf94 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -9,16 +9,19 @@ steps:
   - name: lint yaml
     image: registry.fedy95.com/baseimage-yamllint:latest
     commands:
-      - yamllint -c /yamllint/relaxed.yaml group_vars/all.yml
       - yamllint -c /yamllint/relaxed.yaml playbooks/docker-units/init.yml
       - yamllint -c /yamllint/relaxed.yaml playbooks/k8s/init.yml
+      - yamllint -c /yamllint/relaxed.yaml playbooks/k8s-dev/init.yml
       - yamllint -c /yamllint/relaxed.yaml roles/common/tasks/main.yml
       - yamllint -c /yamllint/relaxed.yaml roles/docker/defaults/main.yml
       - yamllint -c /yamllint/relaxed.yaml roles/docker/handlers/main.yml
       - yamllint -c /yamllint/relaxed.yaml roles/docker/tasks/main.yml
       - yamllint -c /yamllint/relaxed.yaml roles/docker-compose/tasks/main.yml
       - yamllint -c /yamllint/relaxed.yaml roles/docker-compose/vars/main.yml
+      - yamllint -c /yamllint/relaxed.yaml roles/k8s-init-first-master/tasks/main.yml
       - yamllint -c /yamllint/relaxed.yaml roles/k8s-init-machines/tasks/main.yml
+      - yamllint -c /yamllint/relaxed.yaml roles/k8s-init-workers/tasks/main.yml
+      - yamllint -c /yamllint/relaxed.yaml roles/k8s-join-workers-to-first-master/tasks/main.yml
       - yamllint -c /yamllint/relaxed.yaml .drone.yml
     when:
       event: pull_request
diff --git a/Makefile b/Makefile
index 19843a8..21a2d72 100644
--- a/Makefile
+++ b/Makefile
@@ -9,21 +9,25 @@ lint: lint-yaml
 LINT-YAML-CMD=docker run --rm -it -v $(PWD):/data ${REGISTRY}/${YAMLLINT_TAG}
 lint-yaml:
 	docker pull ${REGISTRY}/${YAMLLINT_TAG}
-	$(LINT-YAML-CMD) group_vars/all.yml
 	$(LINT-YAML-CMD) playbooks/docker-units/init.yml
 	$(LINT-YAML-CMD) playbooks/k8s/init.yml
+	$(LINT-YAML-CMD) playbooks/k8s-dev/init.yml
 	$(LINT-YAML-CMD) roles/common/tasks/main.yml
 	$(LINT-YAML-CMD) roles/docker/defaults/main.yml
 	$(LINT-YAML-CMD) roles/docker/handlers/main.yml
 	$(LINT-YAML-CMD) roles/docker/tasks/main.yml
 	$(LINT-YAML-CMD) roles/docker-compose/tasks/main.yml
 	$(LINT-YAML-CMD) roles/docker-compose/vars/main.yml
+	$(LINT-YAML-CMD) roles/k8s-init-first-master/tasks/main.yml
 	$(LINT-YAML-CMD) roles/k8s-init-machines/tasks/main.yml
+	$(LINT-YAML-CMD) roles/k8s-init-workers/tasks/main.yml
+	$(LINT-YAML-CMD) roles/k8s-join-workers-to-first-master/tasks/main.yml
 	$(LINT-YAML-CMD) .drone.yml
 
 check-playbooks-syntax:
 	ansible-playbook playbooks/docker-units/init.yml -i inventory/hosts --syntax-check
 	ansible-playbook playbooks/k8s/init.yml -i inventory/hosts --syntax-check
+	ansible-playbook playbooks/k8s-dev/init.yml -i inventory/hosts --syntax-check
 
 docker-units-init:
 	ansible-playbook playbooks/docker-units/init.yml -i inventory/hosts --ask-become-pass
@@ -31,6 +35,9 @@ docker-units-init:
 k8s-units-init:
 	ansible-playbook playbooks/k8s/init.yml -i inventory/hosts --ask-become-pass
 
+k8s-dev-units-init:
+	ansible-playbook playbooks/k8s-dev/init.yml -i inventory/hosts --ask-become-pass
+
 ping:
 	ansible -i inventory/hosts all -m ping
 
diff --git a/README.md b/README.md
index f01775a..2ae0ab6 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,11 @@
 - [ansible](https://www.ansible.com/)
 - https://github.com/IBM/ansible-kubernetes-ha-cluster
 - https://www.linuxsysadmins.com/install-kubernetes-cluster-with-ansible/
-
+- https://www.youtube.com/watch?v=l7gC4SgW7DU
 ### how to run
 - see Makefile
+
+Creating User Account
+Install Kubernetes & Docker Packages.
+Setting up Kubernetes Master Server
+Setting Up Worker Nodes
diff --git a/inventory/hosts b/inventory/hosts
index 808046e..f610e22 100644
--- a/inventory/hosts
+++ b/inventory/hosts
@@ -1,3 +1,18 @@
+[k8s-dev:children]
+k8s-dev-master
+k8s-dev-worker
+
+[k8s-dev-master-first]
+k8s-dev-master-01 ansible_host=192.168.1.200
+
+[k8s-dev-master]
+k8s-dev-master-01 ansible_host=192.168.1.200
+k8s-dev-master-02 ansible_host=192.168.1.201
+
+[k8s-dev-worker]
+k8s-dev-worker-01 ansible_host=192.168.1.202
+k8s-dev-worker-02 ansible_host=192.168.1.203
+
 [k8s:children]
 k8s-master
 k8s-worker
diff --git a/playbooks/k8s-dev/init.yml b/playbooks/k8s-dev/init.yml
new file mode 100644
index 0000000..62c71d5
--- /dev/null
+++ b/playbooks/k8s-dev/init.yml
@@ -0,0 +1,31 @@
+---
+- name: k8s-units playbook
+  hosts: k8s-dev
+  become: true
+  roles:
+    - common
+    - docker
+    - k8s-init-machines
+
+- name: k8s-units playbook 2
+  hosts: k8s-dev-master-first
+  become: true
+  vars_prompt:
+    - name: "k8s_master_ip"
+      prompt: "Enter the Apiserver advertise address, example: 192.168.1.200"
+      private: no
+  roles:
+    - k8s-init-first-master
+
+- name: k8s-units playbook 3
+  hosts: k8s-dev-worker
+  become: true
+  roles:
+    - k8s-init-workers
+
+- name: k8s-units playbook 4
+  hosts: k8s-dev-master-first
+  become: true
+  roles:
+    - k8s-join-workers-to-first-master
+...
diff --git a/roles/common/tasks/main.yml b/roles/common/tasks/main.yml
index e4c0b45..86f6edd 100644
--- a/roles/common/tasks/main.yml
+++ b/roles/common/tasks/main.yml
@@ -21,7 +21,11 @@
     state: latest
     update_cache: yes
     cache_valid_time: "{{ aptcachetime }}"
-  loop: [ 'git', 'make', 'nano', 'net-tools' ]
+  loop:
+    - 'git'
+    - 'make'
+    - 'nano'
+    - 'net-tools'
 
 - name: Upgrade installed packages
   apt: upgrade=yes
diff --git a/roles/docker/tasks/main.yml b/roles/docker/tasks/main.yml
index 92c19bf..22ca296 100644
--- a/roles/docker/tasks/main.yml
+++ b/roles/docker/tasks/main.yml
@@ -45,7 +45,7 @@
     name: "{{ item }}"
     groups: docker
     append: true
-  with_items: "{{ ansible_env.USER }}"
+  with_items: "fedy95"
 
 - name: "Ensure Docker is {{ docker.start | ternary('started','stopped') }}"
   service: name=docker state={{ docker.start | ternary('restarted','stopped') }} enabled={{ docker.service_enabled }}
diff --git a/roles/k8s-init-first-master/tasks/main.yml b/roles/k8s-init-first-master/tasks/main.yml
new file mode 100644
index 0000000..b39500c
--- /dev/null
+++ b/roles/k8s-init-first-master/tasks/main.yml
@@ -0,0 +1,45 @@
+---
+#- name: Intilizing Kubernetes Cluster
+#  command: kubeadm init --pod-network-cidr 192.168.0.0/16  --apiserver-advertise-address "{{ k8s_master_ip }}"
+#  run_once: true
+#  delegate_to: "{{ k8s_master_ip }}"
+
+- name: Create directory for kube config.
+  file:
+    path: /home/fedy95/.kube
+    state: directory
+    owner: "fedy95"
+    group: "fedy95"
+    mode: 0755
+
+- name: Copy /etc/kubernetes/admin.conf to user home directory /home/fedy95/.kube/config.
+  copy:
+    src: /etc/kubernetes/admin.conf
+    dest: /home/fedy95/.kube/config
+    remote_src: yes
+    owner: "fedy95"
+    group: "fedy95"
+    mode: '0644'
+
+- name: Remove the cache directory.
+  file:
+    path: /home/fedy95/.kube/cache
+    state: absent
+
+- name: Create Pod Network & RBAC.
+  command: "{{ item }}"
+  with_items:
+    - kubectl create -f https://docs.projectcalico.org/manifests/tigera-operator.yaml
+    - kubectl create -f https://docs.projectcalico.org/manifests/custom-resources.yaml
+
+- name: Get the token for joining the nodes with Kuberentes master.
+  shell: kubeadm token create --print-join-command
+  register: kubernetes_join_command
+
+- debug:
+    msg: "{{ kubernetes_join_command.stdout }}"
+
+- name: Copy join command to local file.
+  become: false
+  local_action: copy content="{{ kubernetes_join_command.stdout_lines[0] }}" dest="/tmp/kubernetes_join_command" mode=0777
+...
diff --git a/roles/k8s-init-machines/tasks/main.yml b/roles/k8s-init-machines/tasks/main.yml
index 6abeec5..29eb13c 100644
--- a/roles/k8s-init-machines/tasks/main.yml
+++ b/roles/k8s-init-machines/tasks/main.yml
@@ -26,7 +26,10 @@
     name: "{{ item }}"
     state: present
     cache_valid_time: "{{ aptcachetime }}"
-  loop: [ 'kubeadm', 'kubectl', 'kubelet' ]
+  loop:
+    - 'kubeadm'
+    - 'kubectl'
+    - 'kubelet'
 
 - name: Enable service kubelet persistently
   service:
diff --git a/roles/k8s-init-machines/tasks/other.yml b/roles/k8s-init-machines/tasks/other.yml
deleted file mode 100644
index 8d59650..0000000
--- a/roles/k8s-init-machines/tasks/other.yml
+++ /dev/null
@@ -1,55 +0,0 @@
-- hosts: k8s-master
-  become: yes
-  tasks:
-    - name: install kubectl
-      apt:
-        name: kubectl={{ kube_version }}
-        state: present
-        force: yes
-
-    - name: initialize the cluster
-      shell: kubeadm init --pod-network-cidr=10.244.0.0/16 >> cluster_initialized.txt
-      args:
-        chdir: $HOME
-        creates: cluster_initialized.txt
-
-    - name: create .kube directory
-      file:
-        path: $HOME/.kube
-        state: directory
-        mode: 0755
-
-    - name: copy admin.conf to user's kube config
-      copy:
-        src: /etc/kubernetes/admin.conf
-        dest: $HOME/.kube/config
-        remote_src: yes
-        owner: fedy95
-
-    - name: install Pod network
-      shell: kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/a70459be0084506e4ec919aa1c114638878db11b/Documentation/kube-flannel.yml >> pod_network_setup.txt
-      args:
-        chdir: $HOME
-        creates: pod_network_setup.txt
-
-- hosts: k8s-master
-  become: yes
-  gather_facts: false
-  tasks:
-    - name: get join command
-      shell: kubeadm token create --print-join-command
-      register: join_command_raw
-
-    - name: set join command
-      set_fact:
-        join_command: "{{ join_command_raw.stdout_lines[0] }}"
-
-
-- hosts: k8s-workers
-  become: yes
-  tasks:
-    - name: join cluster
-      shell: "{{ hostvars['master'].join_command }} >> node_joined.txt"
-      args:
-        chdir: $HOME
-        creates: node_joined.txt
diff --git a/roles/k8s-init-workers/tasks/main.yml b/roles/k8s-init-workers/tasks/main.yml
new file mode 100644
index 0000000..3346375
--- /dev/null
+++ b/roles/k8s-init-workers/tasks/main.yml
@@ -0,0 +1,14 @@
+---
+- name: Copy join command to worker nodes.
+  copy:
+    src: /tmp/kubernetes_join_command
+    dest: /tmp/kubernetes_join_command
+    mode: 0777
+
+- name: Join the Worker nodes with master.
+  command: sh /tmp/kubernetes_join_command
+  register: joined_or_not
+
+- debug:
+    msg: "{{ joined_or_not.stdout }}"
+...
diff --git a/roles/k8s-join-workers-to-first-master/tasks/main.yml b/roles/k8s-join-workers-to-first-master/tasks/main.yml
new file mode 100644
index 0000000..749d9e4
--- /dev/null
+++ b/roles/k8s-join-workers-to-first-master/tasks/main.yml
@@ -0,0 +1,7 @@
+---
+- name: Configure kubectl command auto completion.
+  lineinfile:
+    dest: /home/fedy95/.bashrc
+    line: 'source <(kubectl completion bash)'
+    insertafter: EOF
+...