HTTP: failed to make connection to backend: localhost

/var/log/apache2/error.log:[Thu Jul 12 14:52:47.565151 2018] [proxy:error] pid 29746:tid 139938330822400Connecti
on refused: AH00957: HTTP: attempt to connect to [::1]:3001
(localhost) failed
/var/log/apache2/error.log:[Thu Jul 12 14:52:47.565213 2018] [proxy:error] [pid 29746:tid 139938330822400] AH00959: app roxyconnectbackend disabling worker for (localhost) for 60s /var/log/apache2/error.log:[Thu Jul 12 14:52:47.565220 2018] [proxyhttp:error] [pid 29746:tid 139938330822400] [client] AH01114: HTTP: failed to make connection to backend: localhost, referer:
/var/log/apache2/error.log:[Thu Jul 12 14:52:50.786689 2018] [proxy:error] [pid 29746:tid 139938435008256] AH00940: HTTP
: disabled connection for (localhost)

things checked:
1)apache2 is active
2) ps aux | grep node" result:

background process is not working and browser show 503 error service unavailable.. did googling and still not working..

son 30660 0.0 0.0 14224 936 ttyS0 S+ 15:14 0:00 grep --color=auto node

-user able to log in into dashboard

Current result
-browser gave output 503
-maintain in log in page

2 Replies

The site “” is up and responding successfully.

PING ( 56 data bytes
64 bytes from icmpseq=0 ttl=46 time=361.571 ms 64 bytes from icmpseq=1 ttl=46 time=255.249 ms
64 bytes from icmpseq=2 ttl=46 time=256.022 ms 64 bytes from icmpseq=3 ttl=46 time=330.752 ms

The appropriate ports are also open.

Nmap 7.60 ( ) at 2018-07-12 07:19 EDT
Nmap scan report for (
Host is up (0.33s latency).
Not shown: 997 filtered ports
22/tcp open ssh
80/tcp open http
443/tcp open https

Are you able to elaborate as to what you are trying to access?
When I try go to ( I get a 404 not found error.

The requested URL /login. was not found on this server.

I don't know that we have enough information to completely answer your question but these links may be of some service.

If you are able to provide some more details we can certainly try to point you the right direction but I would definitely give a look at those links.

Hi, sorry for late reply.. I already able to solve this. The problem is my nodejs port not running in the background.. To solve this i used PM2 to make nodejs to run in the background.


Please enter an answer

You can mention users to notify them: @username

You can use Markdown to format your question. For more examples see the Markdown Cheatsheet.

> I’m a blockquote.

I’m a blockquote.

[I'm a link] (

I'm a link

**I am bold** I am bold

*I am italicized* I am italicized

Community Code of Conduct