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dunkirk.sh
1# Apache Web Service
2
3## Service Name
4- `apache2` (Ubuntu/Debian)
5- `httpd` (CentOS/RHEL)
6
7## Check Service Status
8```bash
9systemctl status apache2 # Ubuntu
10systemctl status httpd # CentOS
11```
12
13## Configuration Locations
14
15Main config: `/etc/apache2/` (Ubuntu) or `/etc/httpd/` (CentOS)
16
17Key files:
18- `/etc/apache2/apache2.conf` - Main configuration
19- `/etc/apache2/sites-available/` - Available site configs
20- `/etc/apache2/sites-enabled/` - Active site configs (usually symlinks)
21
22## Default Site Configuration
23
24File: `/etc/apache2/sites-available/000-default.conf`
25
26Key directives:
27```apache
28<VirtualHost *:80>
29 DocumentRoot /var/www/html
30 # ... other settings
31</VirtualHost>
32```
33
34- **Listen port**: Default is `*:80` (any IP, port 80)
35- **DocumentRoot**: `/var/www/html` - where website files live
36
37## Website File Location
38
39Website files go in: `/var/www/html`
40
41Default file: `index.html` (or `index.php`)
42
43The web server automatically serves `index.html` when you visit the root URL.
44
45## Start/Restart Service
46
47```bash
48sudo systemctl start apache2
49sudo systemctl restart apache2
50```
51
52## Creating Website Content
53
54Make directories:
55```bash
56sudo mkdir /var/www/html/newfolder
57```
58
59Create files:
60```bash
61sudo touch /var/www/html/newfile.html
62```
63
64**Permission Requirements**: Web server needs read permissions to serve files.
65
66## Security Considerations
67
68- Don't put sensitive files (like `/etc/shadow`) in `/var/www/html`
69- Check permissions - files need to be readable by web server
70- Backup config files before making changes
71- The website displays actual files from the server's filesystem
72
73## Common Issues
74
751. **Service not starting**: Check config file syntax
762. **Can't access website**: Verify service is running, check IP/port
773. **404 errors**: Check DocumentRoot path and file permissions
784. **Permission denied**: Files need world-readable permissions for web server access