From 58a84d82b7d72a05dd0fee67fb6ce06a33a7827e Mon Sep 17 00:00:00 2001
From: GowthamChowta <gautigadu091@gmail.com>
Date: Tue, 29 Mar 2022 12:31:05 -0400
Subject: [PATCH] Adding kubernetes setup files

---
 install-k8s.yml      | 78 ++++++++++++++++++++++++++++++++++++++++++++
 instance-creation.sh | 17 ++++++----
 master.yml           | 48 +++++++++++++++++++++++++++
 users.yml            | 17 ++++++++++
 workers.yml          | 27 +++++++++++++++
 5 files changed, 180 insertions(+), 7 deletions(-)
 create mode 100644 install-k8s.yml
 create mode 100644 master.yml
 create mode 100644 users.yml
 create mode 100644 workers.yml

diff --git a/install-k8s.yml b/install-k8s.yml
new file mode 100644
index 0000000..188d29c
--- /dev/null
+++ b/install-k8s.yml
@@ -0,0 +1,78 @@
+---
+- hosts: 'terraclu-k8s-node-1, terraclu-k8s-master-1 '
+  remote_user: ubuntu
+  become: yes
+  become_method: sudo
+  become_user: root
+  gather_facts: yes
+  connection: ssh
+
+  tasks:
+     - name: Create containerd config file
+       file:
+         path: "/etc/modules-load.d/containerd.conf"
+         state: "touch"
+
+     - name: Add conf for containerd
+       blockinfile:
+         path: "/etc/modules-load.d/containerd.conf"
+         block: |
+               overlay
+               br_netfilter
+
+     - name: modprobe
+       shell: |
+               sudo modprobe overlay
+               sudo modprobe br_netfilter
+
+
+     - name: Set system configurations for Kubernetes networking
+       file:
+         path: "/etc/sysctl.d/99-kubernetes-cri.conf"
+         state: "touch"
+
+     - name: Add conf for containerd
+       blockinfile:
+         path: "/etc/sysctl.d/99-kubernetes-cri.conf"
+         block: |
+                net.bridge.bridge-nf-call-iptables = 1
+                net.ipv4.ip_forward = 1
+                net.bridge.bridge-nf-call-ip6tables = 1
+
+     - name: Apply new settings
+       command: sudo sysctl --system
+
+     - name: install containerd
+       shell: |
+               sudo apt-get update && sudo apt-get install -y containerd
+               sudo mkdir -p /etc/containerd
+               sudo containerd config default | sudo tee /etc/containerd/config.toml
+               sudo systemctl restart containerd
+
+     - name: disable swap
+       shell: |
+               sudo swapoff -a
+               sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
+
+     - name: install and configure dependencies
+       shell: |
+               sudo apt-get update && sudo apt-get install -y apt-transport-https curl
+               curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
+
+     - name: Create kubernetes repo file
+       file:
+         path: "/etc/apt/sources.list.d/kubernetes.list"
+         state: "touch"
+
+     - name: Add K8s Source
+       blockinfile:
+         path: "/etc/apt/sources.list.d/kubernetes.list"
+         block: |
+               deb https://apt.kubernetes.io/ kubernetes-xenial main
+
+     - name: install kubernetes
+       shell: |
+               sudo apt-get update
+               sudo apt-get install -y kubelet=1.22.0-00 kubeadm=1.22.0-00 kubectl=1.22.0-00
+               sudo apt-mark hold kubelet kubeadm kubectl
+
diff --git a/instance-creation.sh b/instance-creation.sh
index 9d79ca3..51f8cd5 100644
--- a/instance-creation.sh
+++ b/instance-creation.sh
@@ -10,12 +10,15 @@ sudo chmod +x terraform &&
 sudo cp terraform /usr/local/bin/ &&
 sudo mv terraform /usr/bin/ &&
 rm -rf terraform_0.14.4_linux_amd64.zip &&
+# Change the directory
+cd jetstream_kubespray &&
+# Export cluser name
+export CLUSTER=terraclu &&
+cp -r inventory/kubejetstream inventory/$CLUSTER &&
+cd inventory/$CLUSTER &&
+# Update the IP address you have provided
+sed -i '/k8s_master_fips/c\k8s_master_fips =["'$IP'"]'  cluster.tfvars &&
 
-export CLUSTER=terraclu
-cp -r inventory/kubejetstream inventory/$CLUSTER
-cd inventory/$CLUSTER
-sed -i '/k8s_master_fips/c\k8s_master_fips "=['$IP']"'  cluster.tfvars
-
-bash terraform_init.sh
-bash terraform_apply.sh
+bash terraform_init.sh &&
+bash terraform_apply.sh &&
 
diff --git a/master.yml b/master.yml
new file mode 100644
index 0000000..5ec2a0b
--- /dev/null
+++ b/master.yml
@@ -0,0 +1,48 @@
+- hosts: 'terraclu-k8s-master-1 '
+  become: yes
+  tasks:
+    - name: change docker driver     
+      shell: |
+          cat <<EOF | sudo tee /etc/docker/daemon.json
+            {"exec-opts": ["native.cgroupdriver=systemd"],"log-driver": "json-file","log-opts": {"max-size": "100m"},"storage-driver": "overlay2"}
+            EOF
+
+    - name: update and reset the changes
+      shell: |
+            sudo systemctl daemon-reload
+            sudo systemctl restart docker
+            sudo kubeadm reset -f    
+
+               
+    - name: initialize the cluster
+      shell: sudo kubeadm init --pod-network-cidr=192.168.0.0/16 --kubernetes-version 1.22.0
+      args:
+        chdir: $HOME
+        creates: cluster_initialized.txt
+
+    - name: for accessing kubectl
+      shell: |
+            mkdir -p $HOME/.kube
+            sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
+            sudo chown $(id -u):$(id -g) $HOME/.kube/config 
+
+
+    - name: install Pod network
+      become: yes
+      become_user: kube
+      shell: sudo kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml 
+      args:
+        chdir: $HOME
+        
+    - name: Get the token for joining the worker nodes
+      become: yes
+      become_user: kube
+      shell: sudo kubeadm token create  --print-join-command
+      register: kubernetes_join_command
+
+    - debug:
+        msg: "{{ kubernetes_join_command.stdout }}"
+
+    - name: Copy join command to local file.
+      become: yes
+      local_action: copy content="{{ kubernetes_join_command.stdout_lines[0] }}" dest="/tmp/kubernetes_join_command" mode=0777
\ No newline at end of file
diff --git a/users.yml b/users.yml
new file mode 100644
index 0000000..2edc3f5
--- /dev/null
+++ b/users.yml
@@ -0,0 +1,17 @@
+- hosts: 'terraclu-k8s-node-1, terraclu-k8s-master-1 '
+  become: yes
+
+  tasks:
+    - name: create the kube user account
+      user: name=kube append=yes state=present createhome=yes shell=/bin/bash
+
+    - name: allow 'kube' to use sudo without needing a password
+      lineinfile:
+        dest: /etc/sudoers
+        line: 'kube ALL=(ALL) NOPASSWD: ALL'
+        validate: 'visudo -cf %s'
+
+    - name: set up authorized keys for the kube user
+      authorized_key: user=kube key="{{item}}"
+      with_file:
+        - ~/.ssh/id_rsa.pub
\ No newline at end of file
diff --git a/workers.yml b/workers.yml
new file mode 100644
index 0000000..eeac127
--- /dev/null
+++ b/workers.yml
@@ -0,0 +1,27 @@
+- hosts: 'terraclu-k8s-node-1 '
+  become: yes
+  gather_facts: yes
+
+  tasks:
+   - name: change docker driver     
+     shell: |
+          cat <<EOF | sudo tee /etc/docker/daemon.json
+            {"exec-opts": ["native.cgroupdriver=systemd"],"log-driver": "json-file","log-opts": {"max-size": "100m"},"storage-driver": "overlay2"} EOF
+    
+   - name: update and reset the changes
+     shell: |
+            sudo systemctl daemon-reload
+            sudo systemctl restart docker
+            sudo kubeadm reset -f                    
+
+   - name: Copy join command from Ansiblehost to the worker nodes.
+     become: yes
+     copy:
+       src: /tmp/kubernetes_join_command
+       dest: /tmp/kubernetes_join_command
+       mode: 0777
+
+   - name: Join the Worker nodes to the cluster.
+     become: yes
+     command: sh /tmp/kubernetes_join_command
+     register: joined_or_not
\ No newline at end of file