Only one Server is visible

[Maik_Garbade]

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┃ Key                  ┃ Value                                 ┃
┣━━━━━━━━━━━━━━━━━━━━━━╋━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
┃ Operating System     ┃ Linux - Debian GNU/Linux 12 on x86_64 ┃
┃ Product              ┃ AMP 'Phobos' v2.6.1.6 (Mainline)      ┃
┃ Virtualization       ┃ None                                  ┃
┃ Application          ┃ Application Deployment                ┃
┃ Module               ┃ ADSModule                             ┃
┃ Running in Container ┃ No                                    ┃
┃ Current State        ┃ Indeterminate                         ┃
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Problem Description:

I configured one ARMA Reforger server and it works like a sharm. But i add one more then and the second will not be visible for players. I checkt it in game and one “https://www.battlemetrics.com”. Both with the same result.

The 2 Server got any ip … 0.0.0.0:2001 and 0.0.0.0:2002. Iptables looking nice. I add more Server and none of them are visible. I thought hmm maybe the ports … i changed the port of the working Server to 2004 as a time were now Server exist with this port. It changed and is still visable. The port itself couldn´t be the problem i think.

The Counter-Strike CZ Server is only for testing and i dont check if it works. Cause i dont have this game installed yet.

ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:https /* AMP Reverse Proxy */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:http /* AMP Reverse Proxy */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:https /* AMP Reverse Proxy */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:http /* AMP Reverse Proxy */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:2223 /* AMP:ADS01:FileManagerPlugin.SFTP.SFTPPortNumber */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:12820 /* AMP:ADS01:ADSModule.Network.MetricsServerPort */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:http-alt /* AMP:ADS01:Core.Webserver.Port */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:2224 /* AMP:ArmaReforgerTestServer01:FileManagerPlugin.SFTP.SFTPPortNumber */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:17777 /* AMP:ArmaReforgerTestServer01:GenericModule.App.Ports.$QueryPort */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:19999 /* AMP:ArmaReforgerTestServer01:GenericModule.App.Ports.$RCONPort */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:2225 /* AMP:EUGNet2Conflict-EverlonPvPenglishonlyisrequired01:FileManagerPlugin.SFTP.SFTPPortNumber */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:2002 /* AMP:EUGNet2Conflict-EverlonPvPenglishonlyisrequired01:GenericModule.App.Ports.$GamePort */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:17778 /* AMP:EUGNet2Conflict-EverlonPvPenglishonlyisrequired01:GenericModule.App.Ports.$QueryPort */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:20000 /* AMP:EUGNet2Conflict-EverlonPvPenglishonlyisrequired01:GenericModule.App.Ports.$RCONPort */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:2226 /* AMP:DEGNet3Test-Server01:FileManagerPlugin.SFTP.SFTPPortNumber */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:2003 /* AMP:DEGNet3Test-Server01:GenericModule.App.Ports.$GamePort */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:17779 /* AMP:DEGNet3Test-Server01:GenericModule.App.Ports.$QueryPort */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:20001 /* AMP:DEGNet3Test-Server01:GenericModule.App.Ports.$RCONPort */
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:2227 /* AMP:DEGNet4Test-Server01:FileManagerPlugin.SFTP.SFTPPortNumber */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:27015 /* AMP:DEGNet4Test-Server01:GenericModule.App.Ports.$GameRCONPort */
ACCEPT     udp  --  anywhere             anywhere             udp dpt:2001 /* AMP:ArmaReforgerTestServer01:GenericModule.App.Ports.$GamePort */

Sorry for the Pic but i think it would be very helpfull to get an overview. May u can help me =(

[Francisco_Enriquez_I]

Hey @Maik_Garbade,

I saw your post and wanted to help troubleshoot your AMP multi-server visibility issue in Phobos v2.6.1.6. Based on your setup, your first ARMA Reforger server works, but additional servers are not visible to players.

Steps to Try:

1. Check AMP Logs for Errors – Look at AMP/logs to see if there are any errors related to server visibility.
2. Verify Port Bindings – The servers are using 0.0.0.0:2001 and 0.0.0.0:2002. Try explicitly binding them to your public IP instead of 0.0.0.0.
3. Confirm Firewall Rules – Your iptables look fine, but double-check that no external firewall (e.g., cloud provider security groups) is blocking connections.
4. Test Server Discovery – Can you manually connect to the second server using its direct IP and port? If not, it may not be properly registering.
5. Check for Known Issues – Some users have reported AMP instance visibility issues in recent versions. If upgrading doesn’t fix it, check AMP forums or GitHub issues for similar reports.

A Few Questions to Help Troubleshoot:

• Does the AMP log show any errors when starting the second server?
• Have you tried binding the servers to a specific IP instead of 0.0.0.0?
• Can you connect manually using the direct IP and port?

Let me know if any of these steps help or if you can provide more details—I’d be happy to troubleshoot further!