# Ansible Role: Common

Manage core Operating System components and system defaults.

## Variables

### APT Configuration

| Variable | Required | Default | Description |
|----------|----------|---------|-------------|
| `apt_automatic_reboot_time` | No | `04:00` | Automated reboot time |
| `apt_automatic_reboot` | No | `true` | Enable automated reboots |
| `apt_enable_multiverse` | No | `false` | Enable multiverse repository |
| `apt_enable_universe` | No | `true` | Enable universe repository |
| `apt_repository` | No | `https://archive.ubuntu.com/ubuntu` | APT repository URL (Ubuntu 22) |
| `apt_repository_main` | No | `https://archive.ubuntu.com/ubuntu` | Main APT repository (Ubuntu 24+) |
| `apt_repository_security` | No | `https://archive.ubuntu.com/ubuntu` | Security APT repository (Ubuntu 24+) |

### DNS Configuration

| Variable       | Required | Default                  | Description                    |
|----------------|----------|--------------------------|--------------------------------|
| `dns_servers`  | No       | `["192.168.10.1"]`       | List of DNS nameservers to use |
| `dns_search`   | No       | `["example.internal"]`   | List of search domains to use  |
| `dns_options`  | No       | `[]`                     | List of resolver options       |

### NTP Configuration

| Variable | Required | Default | Description |
|----------|----------|---------|-------------|
| `ntp_server` | No | `pool.ntp.org` | NTP server for time synchronization |
| `timezone` | No | `Europe/Amsterdam` | System timezone |

## Tags

Available tags for selective execution:

- `apt` - APT package management
- `apt-cleanup` - Clean APT cache
- `apt-update` - Update APT packages
- `dns` - Manage DNS configuration
- `cron` - Configure cron
- `environment-file` - Manage environment files
- `hostname` - Set hostname
- `hostfile` - Manage /etc/hosts
- `firewall` - Configure firewall
- `journald` - Configure journald
- `locale` - Set system locale
- `lldp` - Configure LLDP
- `lxd` - Configure LXD
- `motd` - Set message of the day
- `ntp` - Configure NTP
- `telemetry` - Configure telemetry
- `snap` - Manage snap packages
- `sshd` - Configure SSH daemon
- `swap` - Configure swap
- `sysctl` - Manage sysctl settings
- `systemctl` - Manage systemd services
- `syslog` - Configure syslog
- `timezone` - Set timezone
- `usermanagement` - Manage users

## Example

```yaml
apt_automatic_reboot: true
apt_automatic_reboot_time: "03:00"
ntp_server: "time.cloudflare.com"
timezone: "UTC"
```