Active agent problem with HYPER-V

[Gunsthall]

Hi,

Facts:
- Windows Server 2008 R2 installed with Zabbix Agent (2.0.6 for 64bits)
- All active items and passive items works fine.
- I add Hyper-V role to the Windows Server.
- Everything related to the network works fine in the server (ftp. www, whatever) EXCEPT the zabbix agent. When it tries to start, it reports:

active check configuration update from [X.X.X.Xort] started to fail (ZBX_TCP_READ() failed: [0x0000274C] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.)


- Any test with "zabbix_sender", passive items and all other kinds of test works fine.

- If I remove the HYPER-V role. Everything works fine again.
- No matter the order of installing the agent and the Hyper-V (already tested)
- No proxy nor port filtering.

Just got the problem. Maybe I'll fine the cause, but just in case, I'd appreciate any suggestions.

UPDATE

This is really strange. I've been testing quite a lot of things regarding the Hyper-V configuration, virtual network device, etc .. but things got solved (more or less) when I just changed the agent default DebugLevel parameter to 4 (for debugging). Only with the DebigLevel parameter set to 4, the error disappears, and all the active parameters are sent to the Zabbix server without problems.

I tested again everything, starting from scratch (installation of Windows included), and the problem appeared again only to disappear when the DebugLevel parameter is set to 4.




Cheers!

[rjj]

I see a similar situation with a Proxy running in VirtualBox. When I change the agent debug level to 4 it works in Active mode, in the default debug level it does not (sort of). What I notice is some of the checks that were requested when the agent was in Debug 4 are still working, but no further checks are being requested from (or sent by) the agent when in Debug 3 or less.