Refactor: Organize Ansible project structure

- Reorganized Ansible project structure to follow best practices.
- Created dedicated directories: , , , , and .
- Categorized playbooks into  (host-specific) and  (service-specific).
- Moved all roles into the  directory and standardized their naming conventions.
- Relocated  to  for better variable management.
- Renamed  to  to reflect its global variable scope.
- Created  to correctly set the  to the new  directory.
- Moved  and  into the  directory.
- Added  to  providing explanations for common commands.
- Cleaned up  directories from all individual roles to centralize version control.

roles/linux_config_init/.travis.yml

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+---
+language: python
+python: "2.7"
+
+# Use the new container infrastructure
+sudo: false
+
+# Install ansible
+addons:
+  apt:
+    packages:
+    - python-pip
+
+install:
+  # Install ansible
+  - pip install ansible
+
+  # Check ansible version
+  - ansible --version
+
+  # Create ansible.cfg with correct roles_path
+  - printf '[defaults]\nroles_path=../' >ansible.cfg
+
+script:
+  # Basic role syntax check
+  - ansible-playbook tests/test.yml -i tests/inventory --syntax-check
+
+notifications:
+  webhooks: https://galaxy.ansible.com/api/v1/notifications/

roles/linux_config_init/defaults/main.yml

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+---
+# defaults file for linux_config_tinker

roles/linux_config_init/handlers/main.yml

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+---
+- name: networking restart
+  service:
+    name: networking
+    state: restarted

roles/linux_config_init/tasks/bashrc_copy.yml

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+---
+- name: Copy /root/.bashrc
+  template:
+    src: ../templates/bashrc
+    dest: /root/.bashrc
+    owner: root
+    group: root
+    mode: '0644'
+
+
+- name: Copy /home/{{ user }}/.bashrc
+  template:
+    src: ../templates/bashrc
+    dest: /home/{{ user }}/.bashrc
+    owner: "{{ user }}"
+    group: "{{ user }}"
+    mode: '0644'

roles/linux_config_init/tasks/create_user.yml

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+---
+- name: Adding user
+  ansible.builtin.user:
+    name: "{{ user }}"
+    uid: "{{ uid }}"
+    shell: /bin/bash
+    groups: sudo
+
+- name: Setting ssh key
+  ansible.builtin.blockinfile:
+    state: present
+    owner: "{{ user }}"
+    group: "{{ user }}"
+    insertafter: EOF
+    path: /home/{{ user }}/.ssh/authorized_keys
+    mode: "0644"
+    create: true
+    block: |
+      {{ ssh_key }}
+  when: ssh_key is defined
+
+- name: Set permissions to .ssh folder
+  ansible.builtin.file:
+    path: /home/{{ user }}/.ssh
+    owner: "{{ user }}"
+    group: "{{ user }}"
+    mode: "0711"

roles/linux_config_init/tasks/hostname_set.yml

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+---
+- name: Copy /etc/hosts
+  template:
+    src: ../templates/etc_hosts
+    dest: /etc/hosts
+    owner: root
+    group: root
+    mode: '0664'
+
+
+- name: Set a hostname
+  ansible.builtin.hostname:
+    name: "{{ host }}"

roles/linux_config_init/tasks/main.yml

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+---
+# tasks file for linux_config_init
+- name: System settings
+  ansible.builtin.include_tasks: "{{ item }}"
+  loop:
+     - sudoer_no_passwd.yml
+     - create_user.yml
+     - bashrc_copy.yml
+     - timezone.yml
+     - resolvconf_copy.yml
+
+- name: Set Pernament IP
+  ansible.builtin.include_tasks: set_perma_ip.yml
+  when: set_ip
+
+- name: Set Hostname
+  ansible.builtin.include_tasks: hostname_set.yml
+  when: set_hostname

roles/linux_config_init/tasks/resolvconf_copy.yml

@@ -0,0 +1,8 @@
+---
+- name: Copy /templates/resolvconf
+  template:
+    src: ../templates/resolvconf
+    dest: /etc/resolv.conf
+    owner: root
+    group: root
+    mode: '0644'

roles/linux_config_init/tasks/set_perma_ip.yml

@@ -0,0 +1,9 @@
+---
+- name: Copy /etc/network/interfaces
+  template:
+    src: ../templates/etc_network_interface
+    dest: /etc/network/interfaces
+    owner: root
+    group: root
+    mode: '0644'
+  notify: networking restart

roles/linux_config_init/tasks/sudoer_no_passwd.yml

@@ -0,0 +1,8 @@
+---
+- name: No password for sudo
+  become: true
+  community.general.sudoers:
+    nopassword: true
+    commands: ALL
+    user: "{{ user }}"
+    name: No password for sudo

roles/linux_config_init/tasks/timezone.yml

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+- name: Set timezone to Europe/Prague
+  community.general.timezone:
+    name: Europe/Prague

roles/linux_config_init/templates/bashrc

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+# ~/.bashrc: executed by bash(1) for non-login shells.
+# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
+# for examples
+
+# If not running interactively, don't do anything
+case $- in
+    *i*) ;;
+      *) return;;
+esac
+
+# don't put duplicate lines or lines starting with space in the history.
+# See bash(1) for more options
+HISTCONTROL=ignoreboth
+
+# append to the history file, don't overwrite it
+shopt -s histappend
+
+# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
+HISTSIZE=1000
+HISTFILESIZE=2000
+
+# check the window size after each command and, if necessary,
+# update the values of LINES and COLUMNS.
+shopt -s checkwinsize
+
+# If set, the pattern "**" used in a pathname expansion context will
+# match all files and zero or more directories and subdirectories.
+#shopt -s globstar
+
+# make less more friendly for non-text input files, see lesspipe(1)
+#[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
+
+# set variable identifying the chroot you work in (used in the prompt below)
+if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
+    debian_chroot=$(cat /etc/debian_chroot)
+fi
+
+# set a fancy prompt (non-color, unless we know we "want" color)
+case "$TERM" in
+    xterm-color|*-256color) color_prompt=yes;;
+esac
+
+# uncomment for a colored prompt, if the terminal has the capability; turned
+# off by default to not distract the user: the focus in a terminal window
+# should be on the output of commands, not on the prompt
+#force_color_prompt=yes
+
+if [ -n "$force_color_prompt" ]; then
+    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
+	# We have color support; assume it's compliant with Ecma-48
+	# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
+	# a case would tend to support setf rather than setaf.)
+	color_prompt=yes
+    else
+	color_prompt=
+    fi
+fi
+
+if [ "$color_prompt" = yes ]; then
+    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
+else
+    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
+fi
+unset color_prompt force_color_prompt
+
+# If this is an xterm set the title to user@host:dir
+case "$TERM" in
+xterm*|rxvt*)
+    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
+    ;;
+*)
+    ;;
+esac
+
+# enable color support of ls and also add handy aliases
+if [ -x /usr/bin/dircolors ]; then
+    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
+    alias ls='ls --color=auto'
+    #alias dir='dir --color=auto'
+    #alias vdir='vdir --color=auto'
+
+    alias grep='grep --color=auto'
+    alias fgrep='fgrep --color=auto'
+    alias egrep='egrep --color=auto'
+fi
+
+# colored GCC warnings and errors
+#export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'
+
+# some more ls aliases
+alias ll='ls -lah'
+alias la='ls -A'
+alias l='ls -CF'
+
+# Alias definitions.
+# You may want to put all your additions into a separate file like
+# ~/.bash_aliases, instead of adding them here directly.
+# See /usr/share/doc/bash-doc/examples in the bash-doc package.
+
+if [ -f ~/.bash_aliases ]; then
+    . ~/.bash_aliases
+fi
+
+# enable programmable completion features (you don't need to enable
+# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
+# sources /etc/bash.bashrc).
+if ! shopt -oq posix; then
+  if [ -f /usr/share/bash-completion/bash_completion ]; then
+    . /usr/share/bash-completion/bash_completion
+  elif [ -f /etc/bash_completion ]; then
+    . /etc/bash_completion
+  fi
+fi

roles/linux_config_init/templates/etc_hosts

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+127.0.0.1 localhost.localdomain localhost
+{{ ip }}  {{ host }}
+# The following lines are desirable for IPv6 capable hosts
+
+::1     ip6-localhost ip6-loopback
+fe00::0 ip6-localnet
+ff00::0 ip6-mcastprefix
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+ff02::3 ip6-allhosts

roles/linux_config_init/templates/etc_network_interface

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+auto lo
+iface lo inet loopback
+
+auto {{ in_face }}
+iface {{ in_face }} inet static
+address {{ ip }}/24
+
+{% if ip_admin is defined %}
+iface {{ in_face }} inet static
+address {{ ip_admin }}/24
+{% endif %}
+
+{% if  gateway is defined %}
+gateway {{ gateway }}
+{% endif %}
+source /etc/network/interfaces.d/*

roles/linux_config_init/templates/resolvconf

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+nameserver 192.168.100.6
+nameserver 8.8.8.8

roles/linux_config_init/vars/main.yml

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+---
+# vars file for linux_config_tinker