Nextcloud behinde proxy return File could not be loaded. Please check your internet connection

ℹ️ Support
1

Hello,

I have my nextcloud snap behind pfsense haproxy and it’s have communication with the server. But I get this error and have read and do everything and can’t figure out what is wrong.

Screenshot from 2020-05-05 13-13-53
Screenshot from 2020-05-05 13-13-531632×156 8.96 KB
Screenshot from 2020-05-05 13-16-24
Screenshot from 2020-05-05 13-16-24839×121 16.9 KB

2

Hello, is your communication between haproxy and nginx in plain http or in https ?

3

Hi,
communication is between in plain https protocol.

4

Here is my configuration:

# Automaticaly generated, dont edit manually.
# Generated on: 2020-05-05 12:55
global
	maxconn			1000
	stats socket /tmp/haproxy.socket level admin  expose-fd listeners
	uid			80
	gid			80
	nbproc			1
	nbthread			1
	hard-stop-after		15m
	chroot				/tmp/haproxy_chroot
	daemon
	tune.ssl.default-dh-param	1024
	server-state-file /tmp/haproxy_server_state

frontend https_handler
	bind			xx.xx.xx.xx:443 name xx.xx.xx.xx:443   ssl crt-list /var/etc/haproxy/https_handler.crt_list  
	mode			http
	log			global
	option			http-keep-alive
	option			forwardfor
	acl https ssl_fc
	http-request set-header		X-Forwarded-Proto http if !https
	http-request set-header		X-Forwarded-Proto https if https
	timeout client		30000
	acl			OpenprojectServer	var(txn.txnhost) -m str -i xxxx.xxx-xxx.dk
	acl			SkyCloud	var(txn.txnhost) -m str -i xxx.xxx.dk
	acl			aclcrt_https_handler	var(txn.txnhost) -m reg -i ^project\.xxx-xxx\.dk(:([0-9]){1,5})?$
	acl			aclcrt_https_handler	var(txn.txnhost) -m reg -i ^cloud\.xxxx\.dk(:([0-9]){1,5})?$
	http-request set-var(txn.txnhost) hdr(host)
	use_backend OpenprojectServer_ipvANY  if  OpenprojectServer aclcrt_https_handler
	use_backend SkyCloud_ipvANY  if  SkyCloud aclcrt_https_handler

frontend SkyCloud_http
	bind			xx.xx.xx.xx:80 name xx.xx.xx.xx:80   
	mode			http
	log			global
	option			http-keep-alive
	timeout client		30000
	acl			SkyCloud	var(txn.txnhost) -m str -i xxx.xxx.dk
	http-request set-var(txn.txnhost) hdr(host)
	use_backend SkyCloud_ipvANY  if  SkyCloud 

backend OpenprojectServer_ipvANY
	mode			http
	id			100
	log			global
	timeout connect		30000
	timeout server		30000
	retries			3
	server			Openproject xx.xx.xx.xx:80 id 101  

backend SkyCloud_ipvANY
	mode			http
	id			102
	log			global
	timeout connect		50000
	timeout server		50000
	retries			3
	server			skycloud_80 xx.xx.xx.xxx:80 id 103  
	server			skycloud_443 xx.xx.xx.xxx:443 id 104 ssl  verify none crt /var/etc/haproxy/server_clientcert_5eafb8fceca26.pem
5

Is it working correctly when bypassing haproxy ?

6

Hello again,
I have found the issue that was making lost connection. In backend i set port 80 to run certificate and there was conflicting. When turn it off then it’s running as charm.

Thanks for your time.

7

I know this is from 3 years ago, but we’re seeing this same thing with the latest version of Nextcloud on CentOS Stream, with Apache and HAProxy. Can you share your updated HAProxy config, as I don’t understand exactly what you fixed? Thank you.

8

If I had to take a wild guess it was likely the final line in their config.

The way it was defined there would have been both http and https connections from haproxy to the backend(s) simultaneously which would have been quite unusual.

A common config is https on the front end and http (not https) for the backend. Even if https is desired for the backend interconnect, one would generally only use https rather than both there simultaneously.