139 lines
6 KiB
Markdown
139 lines
6 KiB
Markdown
# Left 4 Dead 2 — Complete Dedicated Server Guide
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## Startup Parameters
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**Default command line**
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```bash
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srcds_run -game left4dead2 -console -usercon +hostport 27015 +map de_dust2 +maxplayers 16 +exec server.cfg
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```
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**Parameters (exhaustive, server-relevant only)**
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- `-game <dir>` — Game directory. Required.
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- `-console` — Enable server console output.
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- `-usercon` — Enable user console commands.
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- `+hostport <port>` — Server port (UDP). Default: 27015.
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- `+ip <address>` — Bind to specific IP address.
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- `+map <mapname>` — Starting map. Required.
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- `+maxplayers <num>` — Maximum players (1-64).
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- `+exec <file>` — Execute config file on startup.
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- `+sv_setsteamaccount <token>` — Game Server Login Token for public servers.
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- `+rcon_password <pass>` — RCON password for remote administration.
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- `+sv_password <pass>` — Server password for private games.
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- `+hostname <name>` — Server name in browser.
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- `+sv_lan <0|1>` — LAN mode (0=Internet, 1=LAN only).
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- `-tickrate <rate>` — Server tickrate (default: 66, competitive: 128).
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- `-port <port>` — Alternative syntax for hostport.
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- `-nohltv` — Disable SourceTV.
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- `+tv_enable <0|1>` — Enable/disable SourceTV.
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- `+tv_port <port>` — SourceTV port (default: hostport + 5).
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- `-secure` — Enable VAC (Valve Anti-Cheat).
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- `-insecure` — Disable VAC (for testing only).
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- `+sv_region <num>` — Server region (255=world, 0-7=specific regions).
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- `+fps_max <fps>` — Server FPS limit.
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- `-threads <num>` — Number of worker threads.
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- `-norestart` — Don't restart server on crash.
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- `+log <on|off>` — Enable/disable logging.
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- `-condebug` — Log console output to file.
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- `+sv_logfile <0|1>` — Enable server logging.
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- `+sv_logflush <0|1>` — Flush logs immediately.
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**Ports**
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- Game: UDP **27015** (primary)
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- RCON: TCP **27015** (same as game port)
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- SourceTV: UDP **27020** (game port + 5)
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- Steam Query: UDP **27016** (game port + 1)
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## Config Files & Locations
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**Windows:**
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- `steamapps/common/Left 4 Dead 2/cfg/server.cfg` — Main server configuration
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- `steamapps/common/Left 4 Dead 2/cfg/autoexec.cfg` — Auto-executed commands
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- `steamapps/common/Left 4 Dead 2/mapcycle.txt` — Map rotation list
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- `steamapps/common/Left 4 Dead 2/motd.txt` — Message of the day
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- `steamapps/common/Left 4 Dead 2/banned_user.cfg` — Banned users
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- `steamapps/common/Left 4 Dead 2/banned_ip.cfg` — Banned IP addresses
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- `steamapps/common/Left 4 Dead 2/logs/` — Server logs directory
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**Linux:**
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- `~/.steam/steamapps/common/Left 4 Dead 2/cfg/server.cfg` — Main server configuration
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- `~/.steam/steamapps/common/Left 4 Dead 2/cfg/autoexec.cfg` — Auto-executed commands
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- `~/.steam/steamapps/common/Left 4 Dead 2/mapcycle.txt` — Map rotation list
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- `~/.steam/steamapps/common/Left 4 Dead 2/motd.txt` — Message of the day
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- `~/.steam/steamapps/common/Left 4 Dead 2/banned_user.cfg` — Banned users
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- `~/.steam/steamapps/common/Left 4 Dead 2/banned_ip.cfg` — Banned IP addresses
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- `~/.steam/steamapps/common/Left 4 Dead 2/logs/` — Server logs directory
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**Key Configuration Files:**
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- **server.cfg**: Core server settings (rates, game rules, admin settings)
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- **autoexec.cfg**: Commands executed on server start
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- **mapcycle.txt**: Map rotation configuration
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- **motd.txt**: Welcome message displayed to connecting players
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## Steam Workshop
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**Workshop Integration:**
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- Check Steam Workshop for community content
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- Subscribe to collections via Steam client
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- Server automatically downloads subscribed content
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- Configure workshop content loading in server configuration
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## Common Mods (curated)
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**Admin/Management Mods**
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- Check official mod repositories or community sites for Left 4 Dead 2
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- Look for server administration, anti-cheat, and quality-of-life mods
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- Install according to game's modding framework (if available)
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**Popular Community Mods**
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- Search Steam Workshop (if supported) for highly-rated server mods
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- Check game's official forums and community sites for recommended mods
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- Verify mod compatibility with current server version
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**Installation Notes**
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- Follow each mod's specific installation instructions
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- Some games require mod loading frameworks or special startup parameters
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- Test mods individually before combining multiple mods
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## Database
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Not applicable - this game does not use a database for core functionality.
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## Administration & Scripting
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**Remote Administration:**
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- RCON (Remote Console) access for server management
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- Web-based admin panels (game-specific or third-party)
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- In-game admin commands and permissions
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**Backup Strategy:**
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- Automated daily backups of save files and configuration
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- Rotate backups (keep 7 daily, 4 weekly, 12 monthly)
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- Test backup restoration procedures regularly
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- Store backups in separate location/drive
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**Auto-Update:**
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- Use SteamCMD for automatic server updates (Steam games)
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- Schedule updates during low-traffic periods
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- Backup before applying updates
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- Monitor for update announcements and patch notes
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**Monitoring:**
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- Server performance monitoring (CPU, memory, network)
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- Player connection logs and statistics
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- Error log monitoring and alerting
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- Uptime tracking and availability reporting
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## Troubleshooting (game-specific)
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**Server not starting**
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- **Cause**: Missing dependencies, incorrect configuration, or port conflicts
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- **Fix**: Check server logs, verify all required files are present, ensure ports are available
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**Players cannot connect**
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- **Cause**: Firewall blocking server port or incorrect network configuration
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- **Fix**: Open required ports in firewall, verify server is binding to correct IP address
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**Performance issues/lag**
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- **Cause**: Insufficient server resources or suboptimal configuration
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- **Fix**: Monitor CPU/memory usage, optimize server settings, reduce player/entity limits
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**Configuration not loading**
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- **Cause**: Syntax errors in config files or incorrect file paths
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- **Fix**: Validate configuration file syntax, check file permissions, review server logs
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**Mod/plugin conflicts**
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- **Cause**: Incompatible mods or plugin version mismatches
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- **Fix**: Test mods individually, update to compatible versions, check for known conflicts
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