Hi all,

is possible use PXE-Less discovery/provisioning from remote location over 
NAT/Openvpn?

In local network everythink works. USB fdi-bootable-3.3.1.iso boot, I enter 
https://FOREMANIP:8443, proxy mode. Discovery status is SUCCESS. In 
Discovery hosts I see new host, clik on Provisionin and select HostGroup. 
Host change kernel (kexec) and start instaling OS (Ubuntu) without reboot.

I have remote location with OpenWRT router configured as Openvpn client, 
all remote lan traffic is routed over this vpn connection. Client boot, 
Discovery status is SUCCESS, in Discovery hosts i see new host, But after 
click on Provisioning and saving new host, nothing happens. On Foreman gui 
a see:  

completed - Create IPv4 DNS record for mac525400a04515.mydomain.cz
completed - Deploy TFTP PXEGrub2 config for mac525400a04515.mydomain.cz
completed - Deploy TFTP PXELinux config for mac525400a04515.mydomain.cz
completed - Deploy TFTP PXEGrub config for mac525400a04515.mydomain.cz
completed - Fetch TFTP boot files for mac525400a04515.mydomain.cz
running - Reloading kernel on mac525400a04515.mydomain.cz

Client stay on Discovery status screen.

Now I testing on my laptop connected over VPN, host is kvm VM with virtual 
net: NAT.  Same problem.

In production.log on server I see ERROR:
.
.
.
2017-02-03T11:27:31 7f001834 [app] [I] Processing by TasksController#show 
as */*
2017-02-03T11:27:31 7f001834 [app] [I]   Parameters: 
{"id"=>"7ce38423-bc56-42cf-b523-ba12894e1b2b"}
2017-02-03T11:27:31 7f001834 [app] [I]   Rendered tasks/_list.html.erb 
(0.3ms)
2017-02-03T11:27:31 7f001834 [app] [I] Completed 200 OK in 5ms (Views: 
0.6ms | ActiveRecord: 0.7ms)
2017-02-03T11:27:32 7f001834 [app] [W] Unable to perform kexec on 
mac525400a04515
 | RestClient::InternalServerError: 500 Internal Server Error
 | 
/usr/share/foreman/vendor/ruby/2.3.0/gems/rest-client-2.0.0/lib/restclient/abstract_response.rb:223:in
 
`exception_with_response'
 | 
/usr/share/foreman/vendor/ruby/2.3.0/gems/rest-client-2.0.0/lib/restclient/abstract_response.rb:103:in
 
`return!'
.
.
.

On Foreman (1.14.1) I have:
1. Smart proxy with Template module enabled

2. One domain with two subnets: 
172.17.129.0/23 for local network - DHCP, TFTP, DNS, Discovery proxy 
enabled 
10.128.20.0/24 for remote location - TFTP, Discovery proxy enabled

3. Two HostGroup, one with local subnet, second with remote subnet

4. Host OS for provisioning Ubuntu 16.04

OpenVPN server 172.17.129.5 with 10.8.0.0/24
Foreman server 172.17.129.51 

What a may check/set for  PXE-Less discovery/provisioning remote host?

Thanks.

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