# Error Failed to open TCP connection to localhost:2633 (Connection refused - connect(2) for "localhost" port 2633)

**URL:** <https://forum.opennebula.io/t/error-failed-to-open-tcp-connection-to-localhost-2633-connection-refused-connect-2-for-localhost-port-2633/13766>\
**Category:** Product Support\
**Created:** [April 21, 2025, 2:16pm UTC](https://forum.opennebula.io/t/error-failed-to-open-tcp-connection-to-localhost-2633-connection-refused-connect-2-for-localhost-port-2633/13766 "2025-04-21T14:16:39Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Senthil\_Kumar\_M](https://avatars.discourse-cdn.com/v4/letter/s/4bbf92/32.png) [@Senthil\_Kumar\_M](https://forum.opennebula.io/u/Senthil_Kumar_M)\
**Post date:** [April 21, 2025, 2:16pm UTC](https://forum.opennebula.io/t/error-failed-to-open-tcp-connection-to-localhost-2633-connection-refused-connect-2-for-localhost-port-2633/13766/1 "2025-04-21T14:16:39Z")

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Hi I am installing opennebula 10 in Alma 9.

Front-end - Alma 9  
Firedge - Alma 9  
Mysql - Rocky 9

When I import Image from fireedge UI I am getting this error. Failed to open TCP connection to localhost:2633 (Connection refused - connect(2) for “localhost” port 2633)

As this topic is follow on to my previous i am getting struk here.

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**Author:** ![dclavijo](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/dclavijo/32/5265_2.png) [@dclavijo](https://forum.opennebula.io/u/dclavijo)\
**Post date:** [April 22, 2025, 7:25am UTC](https://forum.opennebula.io/t/error-failed-to-open-tcp-connection-to-localhost-2633-connection-refused-connect-2-for-localhost-port-2633/13766/2 "2025-04-22T07:25:53Z")

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Port 2633 is the port where the [main opennebula service](https://docs.opennebula.io/6.10/installation_and_configuration/opennebula_services/oned.html#opennebula-configuration-oned) runs by default. It looks like your web interface is trying to reach it but fails to do so. Make sure to properly point the [one\_xmlrpc](https://docs.opennebula.io/6.10/installation_and_configuration/opennebula_services/fireedge.html#configuration) to where oned is running. Make sure oned is running as well.

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**Author:** ![Senthil\_Kumar\_M](https://avatars.discourse-cdn.com/v4/letter/s/4bbf92/32.png) [@Senthil\_Kumar\_M](https://forum.opennebula.io/u/Senthil_Kumar_M)\
**Post date:** [April 22, 2025, 7:39am UTC](https://forum.opennebula.io/t/error-failed-to-open-tcp-connection-to-localhost-2633-connection-refused-connect-2-for-localhost-port-2633/13766/3 "2025-04-22T07:39:32Z")

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From Nebula-CORE;

[root@-70-108 NEBULA ~]# telnet 10.3.110.7 2616  
Trying 10.3.110.7…  
Connected to 10.3.110.7.  
Escape character is ‘^]’.  
^CConnection closed by foreign host.  
[root@e2e-70-108 NEBULA ~]# su - oneadmin  
Last login: Tue Apr 22 13:02:12 IST 2025 on pts/0  
[oneadmin@e2e-70-108 NEBULA ~]$  
[oneadmin@e2e-70-108 NEBULA ~]$ onezone show OpenNebula  
ZONE 0 INFORMATION  
ID : 0  
NAME : OpenNebula  
STATE : ENABLED

[fireedge-server.txt](https://forum.opennebula.io/uploads/short-url/krAafdqMhPwMkMmx17LuK7d3lk2.txt) (2.7 KB)

ENDPOINT=“[http://10.3.110.6:2633/RPC2](http://10.3.110.6:2633/RPC2)”  
[oneadmin@e2e-70-108 NEBULA ~]$

I have also attached my fireedge-server.conf configuration

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<div class="post-metadata">

**Author:** ![dclavijo](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.opennebula.io/dclavijo/32/5265_2.png) [@dclavijo](https://forum.opennebula.io/u/dclavijo)\
**Post date:** [April 23, 2025, 7:06am UTC](https://forum.opennebula.io/t/error-failed-to-open-tcp-connection-to-localhost-2633-connection-refused-connect-2-for-localhost-port-2633/13766/4 "2025-04-23T07:06:26Z")

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Try restarting the FireEdge as you configuration doesn’t point to localhost:2633. Do you get this error only. Can you do other operations in the Web UI besides image upload ?

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**Author:** ![system](https://canada1.discourse-cdn.com/flex031/uploads/opennebula/original/2X/1/14d66f1130b9cd292905f575da9b68a9f574dd03.png) [@system](https://forum.opennebula.io/u/system)\
**Post date:** [June 25, 2025, 3:47pm UTC](https://forum.opennebula.io/t/error-failed-to-open-tcp-connection-to-localhost-2633-connection-refused-connect-2-for-localhost-port-2633/13766/5 "2025-06-25T15:47:01Z")

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