Docker and Kubernetes setup playbooks + updates to older ones

.gitignore

@@ -2,3 +2,4 @@ ios_devices/device_backups
 linux-ubuntu/.DS_Store
 ios_devices/.DS_Store
 .DS_Store
+home_linux/downloads/*

home_linux/config_files/status.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+let upSeconds="$(/usr/bin/cut -d. -f1 /proc/uptime)"
+let secs=$((${upSeconds}%60))
+let mins=$((${upSeconds}/60%60))
+let hours=$((${upSeconds}/3600%24))
+let days=$((${upSeconds}/86400))
+UPTIME=`printf "%d days, %02dh%02dm%02ds" "$days" "$hours" "$mins" "$secs"`
+
+# get the load averages
+read one five fifteen rest < /proc/loadavg
+
+echo "$(tput setaf 2)
+   .~~.   .~~.    `date +"%A, %e %B %Y, %r"`
+  '. \ ' ' / .'   `uname -srmo`$(tput setaf 1)
+   .~ .~~~..~.
+  : .~.'~'.~. :   Uptime.............: ${UPTIME}
+ ~ (   ) (   ) ~  Memory.............: `cat /proc/meminfo | grep MemFree | awk {'print $2'}`kB (Free) / `cat /proc/meminfo | grep MemTotal | awk {'print $2'}`kB (Total)
+( : '~'.~.'~' : ) Load Averages......: ${one}, ${five}, ${fifteen} (1, 5, 15 min)
+ ~ .~ (   ) ~. ~  Running Processes..: `ps ax | wc -l | tr -d " "`
+  (  : '~' :  )   IP Addresses.......: `ip addr | grep inet | awk ' /'192'/   { print $2 }'` and `wget -q -O - http://ipecho.net/plain | tail`
+   '~ .~~~. ~'    Weather............: `curl -s "http://rss.accuweather.com/rss/liveweather_rss.asp?metric=1&locCode=EUR|UK|UK001|NAILSEA|" | sed -n '/Currently:/ s/.*: \(.*\): \([0-9]*\)\([CF]\).*/\2°\3, \1/p'`
+       '~'
+$(tput sgr0)"

home_linux/disable_swap.yml

@@ -0,0 +1,17 @@
+---
+- name: Disable swap on Raspberries
+  hosts: all
+  roles: 
+    - common
+  become: yes
+  gather_facts: no
+  
+  tasks:
+  
+  - name: Disable swap
+    ansible.builtin.shell: sudo swapoff -a
+
+  - name: Reboot
+    ansible.builtin.reboot:
+      test_command: uptime
+

home_linux/get_logs.yml

@@ -4,6 +4,7 @@
   roles:
     - common
   become: yes
+  gather_facts: no
 
   tasks:
 
@@ -14,7 +15,7 @@
   - name: Copy the log files
     fetch:
       src: /var/log/{{ item }}
-      dest: /mnt/c/Ansible/fetched_logs
+      dest: ./downloads/{{ inventory_hostname }}/
     with_items: "{{ files_to_copy.stdout_lines }}"
 
 

home_linux/get_status.yml

@@ -4,11 +4,20 @@
   roles: 
     - common
   become: yes
+  gather_facts: no
   
   tasks:
   
+  - name: Ensure status script is present
+    ansible.builtin.copy:
+      src: ./config_files/status.sh
+      dest: ./status.sh
+      owner: "{{ ansible_user }}"
+      group: "{{ ansible_user }}"
+      mode: '0755'
+
   - name: Get device information
-    command: bash /home/vlad/status.sh
+    command: ./status.sh
     register: status
 
   - name: Print device information

home_linux/home_inventory.yml

@@ -1,9 +1,16 @@
-home:
-  hosts:
-    192.168.0.50:
-    192.168.0.51:
-    192.168.0.52:
-    192.168.0.53:
-    192.168.0.54:
+all:
+  children:
+    kubernetes:
+      hosts:
+        192.168.0.51:
+        192.168.0.52:
+        192.168.0.53:
+    docker:
+      hosts:
+        192.168.0.50:
+    zero:
+      hosts:
+        192.168.0.54:
+        192.168.0.55:
   vars:
     ansible_ssh_private_key_file = /home/vraducanu/.ssh/id_rsa

home_linux/install_docker.yml

@@ -0,0 +1,65 @@
+---
+- name: Install Docker on Raspberries
+  hosts: docker
+  roles: 
+    - common
+  become: yes
+  gather_facts: no
+  
+  tasks:
+  
+  - name: Download Docker install script
+    ansible.builtin.get_url:
+      url: https://test.docker.com/
+      dest: ./get-docker.sh
+      group: "{{ ansible_user }}"
+      mode: '0755'
+
+  - name: Trigger script
+    ansible.builtin.command:
+      cmd: ./get-docker.sh >> get-docker.log
+
+  - name: Ensure group "docker" exists 
+    ansible.builtin.group:
+      name: docker
+      state: present
+
+  - name: Add user to "docker" group
+    ansible.builtin.user:
+      name: "{{ ansible_user }}"
+      group: docker
+
+  - name: Reboot
+    ansible.builtin.reboot:
+      msg: "Reboot initiated by Ansible"
+
+  - name: Install python3 and pip3
+    ansible.builtin.apt:
+      pkg: 
+        - python3
+        - python3-pip
+      state: present
+
+  - name: Install docker-compose
+    ansible.builtin.command:
+      cmd: sudo pip3 install docker-compose
+
+  - name: Enable Docker service 
+    ansible.builtin.systemd:
+      name: docker
+      enabled: yes
+
+  - name: Run test container to ensure Docker works
+    ansible.builtin.command:
+      cmd: docker run hello-world
+    register: result
+
+  - name: Show test result
+    ansible.builtin.debug:
+      var: result
+
+  - name: Cleanup install files
+    ansible.builtin.command:
+      cmd: sudo rm get-docker.*
+
+      

home_linux/install_microk8s.yml

@@ -0,0 +1,38 @@
+---
+- name: Install MicroK8s on Raspberries
+  hosts: kubernetes
+  roles: 
+    - common
+  become: yes
+  gather_facts: no
+  
+  tasks:
+  
+  - name: Install MicroK8s
+    ansible.builtin.snap:
+      channel: stable
+      classic: true
+      name: microk8s
+      state: present
+    register: result
+
+  - name: Display install outcome
+    ansible.builtin.debug:
+      var: result.stdout_lines
+
+  - name: Install kubectl
+    ansible.builtin.snap:
+      channel: stable
+      classic: true
+      name: kubectl
+      state: present
+
+  - name: Create kubectl config folder
+    ansible.builtin.file:
+      path: ~/.kube
+      state: directory
+      mode: "0644"
+
+  - name: Populate kubectl config file
+    ansible.builtin.command:
+      cmd: sudo microk8s config > ~/.kube/config

home_linux/remove_microk8s.yml

@@ -0,0 +1,19 @@
+---
+- name: Remove MicroK8s from Raspberries
+  hosts: kubernetes
+  roles: 
+    - common
+  become: yes
+  gather_facts: no
+  
+  tasks:
+  
+  - name: Uninstall MicroK8s
+    community.general.snap:
+      name: microk8s
+      state: absent
+    register: result
+
+  - name: Display uninstall outcome
+    ansible.builtin.debug:
+      var: result.stdout_lines

home_linux/update_apt.yml

@@ -36,7 +36,7 @@
       verbosity: 0
 
   - name: Get interface configuration
-    shell: "ifconfig"
+    shell: "ip addr"
     register: my_interfaces
 
   - name: Print interface information