Added nfs server ansible role

data/ansible/k8s_cluster/hosts

@@ -1,4 +1,6 @@
+[k8smaster]
+k8s-master  ansible_host=192.168.56.10 ansible_ssh_user=user
+
 [k8snodes]
-k8s-master  ansible_host=192.168.56.120 ansible_ssh_user=gezim
-k8s-node1   ansible_host=192.168.56.121 ansible_ssh_user=gezim
-k8s-node2   ansible_host=192.168.56.122 ansible_ssh_user=gezim
+k8s-node1 ansible_host=192.168.56.11 ansible_ssh_user=user
+k8s-node2 ansible_host=192.168.56.12 ansible_ssh_user=user

data/ansible/k8s_cluster/main.yaml

@@ -1,105 +1,26 @@
 ---
 
-- hosts: k8snodes
+- hosts: all
   vars:
+     m_node_ip: "{{ hostvars['k8s-master']['ansible_host'] }}"
   tasks:
 
   - name: Install kubeadm,containerd,kubectl
     import_role:
          name: ../roles/k8s
   
-  - name: Disable swap permanently
-    lineinfile:
-      path: /etc/fstab
-      regexp: '^\s*UUID=\S+\s+none\s+swap'
-      state: absent
-    become: true
-
-  - name: Disable swap on current session
-    become: true
-    command:
-      cmd: swapoff -a
-    when: ansible_swaptotal_mb > 0
+  - name: Start nfs server 
+    import_role:
+       name: ../roles/nfs_server
 
 
-- hosts: k8s-master
-  vars:
-     kube_config: "{{ ansible_env.HOME }}/.kube/config"
-     iface: enp0s8
-  tasks:
-  - name: Install kubectl 
-    become: true
-    apt: 
-     name: kubectl
-     state: present
-
-  - name: Get flannel configuration 
-    get_url:
-     url: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
-     dest: "{{ ansible_env.HOME }}"
-
-  - name: Add iface for flannel
-    lineinfile:
-         path: "{{ ansible_env.HOME }}/kube-flannel.yml"
-         insertafter: "- --kube-subnet-mgr"
-         line : "        - --iface={{ iface }}"
-
-
-  - name: Reset the kubeadm
-    become: true
-    command:
-       cmd: kubeadm reset -f
-
-  - name: Start the cluster
-    become: true
-    command:
-      cmd: "kubeadm init --apiserver-advertise-address {{ hostvars['k8s-master']['ansible_host'] }} --pod-network-cidr=10.244.0.0/16"
-    register: kubeadm_output
-
-  - name: Extract token value
-    set_fact:
-     kubeadm_token: "{{ kubeadm_output | regex_search('--token\\s+(\\S+)', '\\1') | first }}"
-     kubeadm_hash: "{{ kubeadm_output | regex_search('--discovery-token-ca-cert-hash\\s+sha256:(\\S+)', '\\1') | first }}"
-
-  - name: Remove $HOME/.config
-    file: 
-      path: "{{ kube_config }}"
-      state: absent
-
-  - name: Create .config
-    file: 
-      path: "{{ ansible_env.HOME }}/.kube"
-      state: directory
-
-  - name: Copy the file 
-    become: true
-    copy:
-      src: /etc/kubernetes/admin.conf
-      dest: "{{ kube_config }}"
-      remote_src: true
-      owner: "{{ ansible_env.USER }}"
-      group: "{{ ansible_env.USER }}"
-
-  - name: Apply flannel network settings
-    command:
-       cmd: kubectl apply -f kube-flannel.yml
-       chdir: "{{ ansible_env.HOME }}"
-    register: flannel
-
-
-- hosts: k8s-node1,k8s-node2
-
+- hosts: k8smaster
   tasks:
 
-  - name: Reset the kubeadm
-    become: true
-    command:
-       cmd: kubeadm reset -f
+    - name: Install Postgresql
+      import_role: 
+       name: ../roles/postgresql
 
-  - name: Join in the cluster
-    become: true
-    command:
-       cmd:   "kubeadm join {{ hostvars['k8s-master']['ansible_host'] }}:6443 --token {{ hostvars['k8s-master']['kubeadm_token'] }} --discovery-token-ca-cert-hash sha256:{{ hostvars['k8s-master']['kubeadm_hash'] }}"
-
-
-  
+    - name: Install Redis
+      import_role:
+        name: ../roles/redis

data/ansible/roles/k8s/defaults/main.yaml

@@ -3,6 +3,10 @@ keyring_path: /etc/apt/keyrings
 
 kubernetes_version: v1.28
 
+kube_config: "{{ ansible_env.HOME }}/.kube/config"
+
+iface: enp0s8
+
 k8s_dependencies:
 - ca-certificates
 - curl

data/ansible/roles/k8s/handlers/main.yaml

@@ -1,6 +1,7 @@
 ---
-- name: Restart containerd
-  become: true
-  ansible.builtin.systemd:
-    name: containerd
-    state: restarted
+
+- name: Restart kubelet
+  become: true 
+  systemd: 
+      name: kubelet
+      state: restarted

data/ansible/roles/k8s/tasks/k8s-master.yaml

@@ -0,0 +1,58 @@
+---
+
+- name: Install kubectl 
+  become: true
+  apt: 
+     name: kubectl
+     state: present
+
+- name: Get flannel configuration 
+  get_url:
+   url: https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
+   dest: "{{ ansible_env.HOME }}"
+
+- name: Add iface for flannel
+  lineinfile:
+       path: "{{ ansible_env.HOME }}/kube-flannel.yml"
+       insertafter: "- --kube-subnet-mgr"
+       line : "        - --iface={{ iface }}"
+
+- name: Reset the kubeadm
+  become: true
+  command:
+     cmd: kubeadm reset -f
+
+- name: Start the cluster
+  become: true
+  command:
+    cmd: "kubeadm init --apiserver-advertise-address {{ ansible_host }} --pod-network-cidr=10.244.0.0/16"
+  register: kubeadm_output
+
+- name: Extract token and hash valuew
+  set_fact:
+   kubeadm_token: "{{ kubeadm_output | regex_search('--token\\s+(\\S+)', '\\1') | first }}"
+   kubeadm_hash: "{{ kubeadm_output | regex_search('--discovery-token-ca-cert-hash\\s+sha256:(\\S+)', '\\1') | first }}"
+
+- name: Remove $HOME/.config
+  file: 
+     path: "{{ kube_config }}"
+     state: absent
+
+- name: Create .config
+  file: 
+    path: "{{ ansible_env.HOME }}/.kube"
+    state: directory
+
+- name: Copy the file 
+  become: true
+  copy:
+    src: /etc/kubernetes/admin.conf
+    dest: "{{ kube_config }}"
+    remote_src: true
+    owner: "{{ ansible_env.USER }}"
+    group: "{{ ansible_env.USER }}"
+
+- name: Apply flannel network settings
+  command:
+     cmd: kubectl apply -f kube-flannel.yml
+     chdir: "{{ ansible_env.HOME }}"

data/ansible/roles/k8s/tasks/k8s-nodes.yaml

@@ -0,0 +1,10 @@
+---
+- name: Reset the kubeadm
+  become: true
+  command:
+      cmd: kubeadm reset -f
+
+- name: Join in the cluster
+  become: true
+  command:
+       cmd:   "kubeadm join {{ m_node_ip }}:6443 --token {{ hostvars['k8s-master']['kubeadm_token'] }} --discovery-token-ca-cert-hash sha256:{{ hostvars['k8s-master']['kubeadm_hash'] }}"

data/ansible/roles/k8s/tasks/main.yaml

@@ -1,5 +1,18 @@
 ---
 
+- name: Disable swap permanently
+  lineinfile:
+    path: /etc/fstab
+    regexp: '^\s*UUID=\S+\s+none\s+swap'
+    state: absent
+  become: true
+
+- name: Disable swap on current session
+  become: true
+  command:
+    cmd: swapoff -a
+  when: ansible_swaptotal_mb > 0
+
 - name: Install containerd dependencies
   become: true
   apt:
@@ -93,8 +106,29 @@
       regexp: '^(\s*)SystemdCgroup'
       line: '\1SystemdCgroup = true'
       backrefs: yes
-  notify: Restart containerd
 
+- name: Restart containerd
+  become: true
+  ansible.builtin.systemd:
+    name: containerd
+    state: restarted
 
- 
+- include_tasks: k8s-master.yaml
+  when: "'k8smaster' in group_names"
 
+- include_tasks: k8s-nodes.yaml
+  when: "'k8snodes' in group_names"
+
+- name: Add worker label on nodes
+  command:
+      cmd: "kubectl label node {{ item }} node-role.kubernetes.io/worker=worker"
+  loop: "{{ groups['k8snodes']  }}"
+  when: "'k8smaster' in group_names"
+
+- name: Add the correct IP for the nodes
+  become: true
+  template:
+    dest: /var/lib/kubelet/kubeadm-flags.env
+    src:  kubeadm-flags.env.j2
+    force: yes
+  notify: Restart kubelet

data/ansible/roles/k8s/templates/kubeadm-flags.env.j2

@@ -0,0 +1 @@
+KUBELET_KUBEADM_ARGS="--container-runtime-endpoint=unix:///var/run/containerd/containerd.sock --pod-infra-container-image=registry.k8s.io/pause:3.9 --node-ip={{ ansible_host }}"

data/ansible/roles/nfs_server/tasks/client.yaml

@@ -0,0 +1,29 @@
+---
+
+- name: Install NFS client packages
+  become: true 
+  apt:
+    name: nfs-common
+    state: present 
+    update_cache: yes
+
+- name: Create  NFS Shared folder 
+  become: true
+  file:
+   state: directory
+   path: /mnt/nfs
+
+- name: Mount the shared folder
+  become: true 
+  mount: 
+    path: /mnt/nfs
+    src: "{{ m_node_ip }}:/nfs"
+    fstype: nfs
+    state: mounted
+
+# - name: Configure auto-mount 
+#   become: true
+#   lineinfile:
+#     path: /etc/fstab
+#     insertafter: 'EOF' 
+#     line: "{{ m_node_ip }}:/nfs /mnt/nfs  nfs defaults 0 0"

data/ansible/roles/nfs_server/tasks/main.yaml

@@ -0,0 +1,8 @@
+---
+
+- include_tasks: server.yaml
+  when: "'k8smaster' in group_names"
+
+
+- include_tasks: client.yaml
+  when: "'k8snodes' in group_names"

data/ansible/roles/nfs_server/tasks/server.yaml

@@ -0,0 +1,38 @@
+---
+- name: Install nfs-kernel-server
+  become: true
+  apt:
+    update_cache: yes
+    name: nfs-kernel-server 
+    state: present 
+
+
+- name: Create a directory for NFS share 
+  become: true
+  file:
+    path: /nfs
+    owner: nobody
+    group: nogroup
+    mode: '0777'
+    state: directory
+
+
+- name: Modyify the exports file
+  become: true
+  lineinfile:
+    path: /etc/exports
+    insertafter: 'EOF'
+    line: "/nfs *(rw,sync,no_subtree_check,no_root_squash)"
+
+- name: Export the NFS Share
+  become: true 
+  command:
+    cmd: "exportfs -a"
+
+
+- name: Enable and start nfs-kernel-server
+  become: true 
+  systemd: 
+    name: nfs-kernel-server
+    enabled: yes
+    state: started

data/ansible/roles/redis/tasks/main.yaml

@@ -0,0 +1,7 @@
+---
+
+- name: Get Redis from apt repository
+  become: true
+  apt:
+    name: redis-server 
+    state: present