GLPI agent unable to contact server when proxy set in environement variables

[gothiksnake]

Documentation & bug reporting acknowledgment

Yes, I read it

Describe your problem

Hi, I read that GLPI agent automatically uses HTTP_PROXY and HTTPS_PROXY environment variables if set, however this behavior prevents the agent from talking to my server. Everything works as expected if I remove the environment variables, but I have other software that depend on those variables to function properly, so that is not a fix.

How can I tell the agent to avoid the ENV completely?

I've tried modifying the agent.cfg file and not installing the agent as a service to no avail.

My log file after a fresh reinstall :

[Thu Oct 31 08:27:45 2024][debug] Logger backend File initialized
[Thu Oct 31 08:27:45 2024][debug] GLPI Agent (1.11)
[Thu Oct 31 08:27:45 2024][debug] Configuration directory: C:/Program Files/GLPI-Agent/etc
[Thu Oct 31 08:27:45 2024][debug] Data directory: C:/Program Files/GLPI-Agent/share
[Thu Oct 31 08:27:45 2024][debug] Storage directory: C:\Program Files\GLPI-Agent\var
[Thu Oct 31 08:27:45 2024][debug] Lib directory: C:/Program Files/GLPI-Agent/perl/agent
[Thu Oct 31 08:27:45 2024][debug] [target server0] Next server contact planned for Thu Oct 31 09:24:33 2024
[Thu Oct 31 08:27:45 2024][debug2] getAvailableTasks() : add of task Collect version 2.9
[Thu Oct 31 08:27:45 2024][debug2] getAvailableTasks() : add of task Deploy version 3.3
[Thu Oct 31 08:27:45 2024][debug2] getAvailableTasks() : add of task ESX version 2.11
[Thu Oct 31 08:27:45 2024][debug2] getAvailableTasks() : add of task Inventory version 1.18
[Thu Oct 31 08:27:45 2024][debug2] getAvailableTasks() : add of task NetDiscovery version 6.4
[Thu Oct 31 08:27:45 2024][debug2] getAvailableTasks() : add of task NetInventory version 6.4
[Thu Oct 31 08:27:45 2024][debug2] getAvailableTasks() : add of task RemoteInventory version 1.5
[Thu Oct 31 08:27:45 2024][debug] Available tasks:
[Thu Oct 31 08:27:45 2024][debug] - Collect: 2.9
[Thu Oct 31 08:27:45 2024][debug] - Deploy: 3.3
[Thu Oct 31 08:27:45 2024][debug] - ESX: 2.11
[Thu Oct 31 08:27:45 2024][debug] - Inventory: 1.18
[Thu Oct 31 08:27:45 2024][debug] - NetDiscovery: 6.4
[Thu Oct 31 08:27:45 2024][debug] - NetInventory: 6.4
[Thu Oct 31 08:27:45 2024][debug] - RemoteInventory: 1.5
[Thu Oct 31 08:27:45 2024][debug] target server0: server http://myserverip
[Thu Oct 31 08:27:45 2024][debug] Planned tasks for server0: ESX,Collect,Deploy,NetDiscovery,RemoteInventory,Inventory,NetInventory
[Thu Oct 31 08:27:45 2024][debug] Provided by Teclib Edition
[Thu Oct 31 08:27:45 2024][debug] Installer built on Tue Sep 24 09:47:14 2024 UTC
[Thu Oct 31 08:27:45 2024][debug] Built with Strawberry Perl 5.38.2
[Thu Oct 31 08:27:45 2024][debug] Built on github actions windows image for glpi-project/glpi-agent repository
[Thu Oct 31 08:27:45 2024][info] GLPI Agent service starting
[Thu Oct 31 08:27:45 2024][debug] Trusted target ip: myserverip/32, ::ffff:869d:679e/128
[Thu Oct 31 08:27:45 2024][debug] Trusted client ip/range: 127.0.0.1/32, ::ffff:7f00:1/128, ::1/128
[Thu Oct 31 08:27:45 2024][debug] [http server] Trying to load BasicAuthentication Server plugin
[Thu Oct 31 08:27:45 2024][debug] [basic authentication server plugin] Initializing BasicAuthentication v1.0 Server plugin...
[Thu Oct 31 08:27:45 2024][debug] [basic authentication server plugin] Loading BasicAuthentication Server plugin configuration from C:/Program Files/GLPI-Agent/etc/basic-authentication-server-plugin.cfg
[Thu Oct 31 08:27:45 2024][debug] [http server] HTTPD BasicAuthentication Server plugin loaded but disabled
[Thu Oct 31 08:27:45 2024][debug] [http server] Trying to load Inventory Server plugin
[Thu Oct 31 08:27:45 2024][debug] [inventory server plugin] Initializing Inventory v1.1 Server plugin...
[Thu Oct 31 08:27:45 2024][debug] [inventory server plugin] Loading Inventory Server plugin configuration from C:/Program Files/GLPI-Agent/etc/inventory-server-plugin.cfg
[Thu Oct 31 08:27:45 2024][debug] [http server] HTTPD Inventory Server plugin loaded but disabled
[Thu Oct 31 08:27:45 2024][debug] [http server] Trying to load Proxy Server plugin
[Thu Oct 31 08:27:45 2024][debug] [proxy server plugin] Initializing Proxy v2.5 Server plugin...
[Thu Oct 31 08:27:45 2024][debug] [proxy server plugin] Loading Proxy Server plugin configuration from C:/Program Files/GLPI-Agent/etc/proxy-server-plugin.cfg
[Thu Oct 31 08:27:45 2024][debug] [http server] HTTPD Proxy Server plugin loaded but disabled
[Thu Oct 31 08:27:45 2024][debug] [http server] Trying to load SecondaryProxy Server plugin
[Thu Oct 31 08:27:45 2024][debug] [proxy2 server plugin] Initializing SecondaryProxy v1.1 Server plugin...
[Thu Oct 31 08:27:45 2024][debug] [proxy2 server plugin] Loading SecondaryProxy Server plugin configuration from C:/Program Files/GLPI-Agent/etc/proxy2-server-plugin.cfg
[Thu Oct 31 08:27:45 2024][debug] [http server] HTTPD SecondaryProxy Server plugin loaded but disabled
[Thu Oct 31 08:27:45 2024][debug] [http server] Trying to load SSL Server plugin
[Thu Oct 31 08:27:45 2024][debug] [ssl server plugin] Initializing SSL v1.2 Server plugin...
[Thu Oct 31 08:27:45 2024][debug] [ssl server plugin] Loading SSL Server plugin configuration from C:/Program Files/GLPI-Agent/etc/ssl-server-plugin.cfg
[Thu Oct 31 08:27:45 2024][debug] [http server] HTTPD SSL Server plugin loaded but disabled
[Thu Oct 31 08:27:45 2024][debug] [http server] Trying to load Test Server plugin
[Thu Oct 31 08:27:45 2024][debug] [server test plugin] Initializing Test v1.11 Server plugin...
[Thu Oct 31 08:27:45 2024][debug] [server test plugin] Loading Test Server plugin configuration from C:/Program Files/GLPI-Agent/etc/server-test-plugin.cfg
[Thu Oct 31 08:27:45 2024][debug] [http server] HTTPD Test Server plugin loaded but disabled
[Thu Oct 31 08:27:45 2024][debug] [http server] Trying to load ToolBox Server plugin
[Thu Oct 31 08:27:45 2024][debug] [toolbox plugin] Initializing ToolBox v1.4 Server plugin...
[Thu Oct 31 08:27:45 2024][debug] [toolbox plugin] Loading ToolBox Server plugin configuration from C:/Program Files/GLPI-Agent/etc/toolbox-plugin.cfg
[Thu Oct 31 08:27:45 2024][debug] [http server] HTTPD ToolBox Server plugin loaded but disabled
[Thu Oct 31 08:27:45 2024][info] [http server] HTTPD service started on port 62354
[Thu Oct 31 08:27:45 2024][debug2] Looking for Win32_Processor class WMI objects
[Thu Oct 31 08:27:46 2024][debug] Agent memory usage before freeing memory: WSS=123817984 PFU=114528256
[Thu Oct 31 08:27:46 2024][info] GLPI Agent memory usage: WSS=3100672 PFU=114528256
[Thu Oct 31 08:27:46 2024][debug] Running in background mode
[Thu Oct 31 08:27:46 2024][info] target server0: next run: Thu Oct 31 08:27:45 2024 - http://myserverip
[Thu Oct 31 08:27:46 2024][info] target server0: server http://myserverip
[Thu Oct 31 08:27:46 2024][debug2] [http client] Using Compress::Zlib for compression
[Thu Oct 31 08:27:46 2024][info] sending prolog request to server0
[Thu Oct 31 08:27:46 2024][debug2] [http client] sending message:
<?xml version="1.0" encoding="UTF-8"?>
<REQUEST>
  <DEVICEID>SM106-03-2024-10-30-16-11-50</DEVICEID>
  <QUERY>PROLOG</QUERY>
  <TOKEN>12345678</TOKEN>
</REQUEST>
[Thu Oct 31 08:27:46 2024][debug] [http client] Using 'http://myproxy.address.com:3128' as proxy for http protocol
[Thu Oct 31 08:28:46 2024][error] [http client] proxy error: 503 Service Unavailable
[Thu Oct 31 08:28:46 2024][error] No supported answer from server at http://myserverip
[Thu Oct 31 08:28:46 2024][info] target server0: next run: Thu Oct 31 08:29:46 2024 - http://myserverip
[Thu Oct 31 08:28:46 2024][debug] Agent memory usage before freeing memory: WSS=44777472 PFU=120446976
[Thu Oct 31 08:28:46 2024][info] GLPI Agent memory usage: WSS=3244032 PFU=120446976
[Thu Oct 31 08:28:47 2024][debug] target server0: init event for ESX task
[Thu Oct 31 08:28:48 2024][debug] target server0: init event for Collect task
[Thu Oct 31 08:28:49 2024][debug] target server0: init event for Deploy task
[Thu Oct 31 08:28:50 2024][debug] [target server0] New storage maintenance event on deploy task
[Thu Oct 31 08:28:50 2024][debug2] [target server0] Event scheduled in 120 seconds
[Thu Oct 31 08:28:51 2024][debug] target server0: init event for NetDiscovery task
[Thu Oct 31 08:28:52 2024][debug] target server0: init event for RemoteInventory task
[Thu Oct 31 08:28:53 2024][debug] target server0: init event for Inventory task
[Thu Oct 31 08:28:54 2024][debug] target server0: init event for NetInventory task
[Thu Oct 31 08:29:46 2024][info] target server0: server http://myserverip
[Thu Oct 31 08:29:46 2024][debug2] [http client] Using Compress::Zlib for compression
[Thu Oct 31 08:29:46 2024][info] sending prolog request to server0
[Thu Oct 31 08:29:46 2024][debug2] [http client] sending message:
<?xml version="1.0" encoding="UTF-8"?>

To reproduce

Set environment variables for proxy server

Expected behavior

The agent should successfully reach the glpi server and upload it's inventory

Operating system

Windows 10

GLPI Agent version

1.11

GLPI version

10.0.16

GLPI server OS

Ubuntu 22 LTS

[g-bougard]

Hi @gothiksnake

stupid question, are you sure the proxy was really working at that time ? You provide nothing showing the proxy is alive. My first reflex is to tell you the error is only telling the proxy is unavailable and you just have to fix this problem.

Did you try also to use proxy glpi-agent configuration ? And so do you obtain the same result ?

Anyway, try to set your GLPI server hostname in NO_PROXY environment variable like this:

NO_PROXY=myserverip

Don't forget to restart service after that.

[g-bougard]

Yes, glpi-agent service on windows will use system variables.

About proxy, maybe your proxy is configured to reject requests with unknown User-Agent header, or maybe glpi-agent http client is triggering another limitation which make it unavailable for glpi-agent.

[gothiksnake]

I added the new variable, still no dice.

I honestly don't know how our proxy server is set up, since that's not my department.

It's surprising that GLPI agent is able to detect when no variable is set and carry on with working as intended, but there doesn't seem to be an option to tell it to ignore variables.

[maxsmooth]

Same issue here, but on Debian Linux.

[g-bougard]

Just tried a trick, I just set the server as proxy using the proxy option itself, meaning I set the same url as "server" and "proxy". This may be a workaround but of course this is not fully correct.

[gothiksnake]

Just tried a trick, I just set the server as proxy using the proxy option itself, meaning I set the same url as "server" and "proxy". This may be a workaround but of course this is not fully correct.

That worked for me!
I just used FOG to deploy the changes to my computers silently using the followings flags in a batch file:
GLPI-Agent-1.11-x64.msi /quiet SERVER="http://myserverip" PROXY="http://myserverip" REINSTALL=feat_AGENT ADD_FIREWALL_EXCEPTION=1 ADDLOCAL=ALL AGENTMONITOR=1 DEBUG=2 SCAN_PROFILES=1 NO_HTTPD=0 RUNNOW=1

[g-bougard]

Hi there,

for your information, I just updated glpi-agent to support none as proxy configuration value. The effect will be to skip loading proxy from environment variables.

Can you test it using next nightly build ?
https://nightly.glpi-project.org/glpi-agent/

Thank you in advance.