Merge branch 'dev-arcter' into 'master'

Add example playbook

See merge request !1

ansible/example-playbook/README.md

+This is an example playbook.
+
+Kubernetes example: https://git.sch.bme.hu/kszk/sysadmin/kubernetes/cluster-setup/-/tree/master/ansible/mgmt

ansible/example-playbook/exampleplay.yml

+- name: task examples
+  hosts: host1.sch.bme.hu
+  vars_files:
+  - vars/example.yml
+  tasks:
+    - name: Simple task
+      script: "echo hello world!"
+
+    - name: Import task file
+      import_tasks: tasks/installpackage.yml
+
+    - name: Only do task when requirement meet
+      debug:
+        msg: "Random task was executed"
+      when: condition
+
+    - name: use vars
+      debug:
+        msg: "{{ user }}"
+
+    - name: use loop
+      debug:
+        msg: "{{ item }}"
+      loop:
+        "{{ list }}"

ansible/example-playbook/files/README.md

+You may place your files here that should be copyed to the target machine,
+and doesn't need templating.

ansible/example-playbook/tasks/README.md

+You may place your task files here.
+
+Task files are a list of tasks that can be executed separetly.
+You would use this if you want to group some tasks.
+Ie: you want to install Podman on Ubuntu 20.04

ansible/example-playbook/tasks/installpackage.yml

+---
+- name: Add the GPG key for the repository
+  become: true
+  ansible.builtin.apt_key:
+    url: https://urlforgpgkey
+    state: present
+
+- name: Add the repository
+  become: true
+  ansible.builtin.apt_repository:
+    repo: "deb http://hu.archive.ubuntu.com/ubuntu/ focal main restricted" #Example line
+    state: present
+
+- name: "Update apt packages"
+  become: true
+  apt:
+    upgrade: yes
+    update_cache: yes
+
+- name: Install the software
+  apt:
+    name: Name_of_SW
+    state: present
\ No newline at end of file

ansible/example-playbook/templates/README.md

+You may place templates here. Templates can use variables that will be replaced by the task later.
+Example for a template:
+```
+This file holds the {{ meaning_of_life }}.
+```
+If you give value for the `meaning_of_life`, then you can copy it by this task:
+```
+- name: Use template
+  vars:
+    meaning_of_life: 42
+  template:
+    src: ../templates/README.md
+    dest: /the/full/path/of/destination
+# You may set other parameters of the target file such as owner or permissins
+```
\ No newline at end of file

ansible/example-playbook/vars/README.md

+You may place your var files here.
+Var files can hold variables that can be used by tasks, rules and playes.
+The vars should use the "key: value" form.
+If you use variables that should be encrypted you can do so by ansible-vault
+Encrypt it
+
+```bash
+ansible-vault encrypt file_name
+```
+
+Decrypt it
+```bash
+ansible-vault decrypt file_name
+```

ansible/example-playbook/vars/example.yml

+list:
+  - one: 1
+  - two: 2
+  - three: 3
+user: {name: user1 , home_address: moon}
\ No newline at end of file

ansible/inventory.yaml

 all:
+  #You should be able to SSH into all of these machines
   hosts:
     # Use OpenSSH config to make it comfortable
     host1.sch.bme.hu: 

ansible/playbook-name/README.md

-You place here your usual playbook.
-
-Example: https://git.sch.bme.hu/kszk/sysadmin/kubernetes/cluster-setup/-/tree/master/ansible/mgmt