[Spacewalk-list] Clients not picking up requested changes, period

[Chris Swingler]

Hey Spacewalk-list!

I have quite a few systems (I haven't dug into seeing if there is any
consistency in CentOS versions or the RHN tools) that just plain do not
seem to get tasks back from the Spacewalk server.  We're running Spacewalk
2.2 on CentOS release 6.5 (Final).

I can create a simple task in Spacewalk, like just print the output of
"date", and an rhn_check never seems to execute it.  It shows up under
Events > Pending, the SystemIDs match, but it never moves.

Running a packet capture to watch the transaction, it looks like Spacewalk
itself isn't even sending the task to the remote system. Spacewalk happily
replies with an HTTP 200 and an empty payload.

HTTP/1.1 200 OK
Date: Mon, 26 Jan 2015 22:47:55 GMT
Server: Apache
Content-Length: 126
X-RHN-Server-Capability: registration.finish_message(1)=1
X-RHN-Server-Capability: registration.remaining_subscriptions(1)=1
X-RHN-Server-Capability: abrt(1)=1
X-RHN-Server-Capability: registration.update_contact_info(1)=1
X-RHN-Server-Capability: staging_content(1)=1
X-RHN-Server-Capability: applet.has_base_channel(1)=1
X-RHN-Server-Capability: registration.smbios(1)=1
X-RHN-Server-Capability: registration.extended_update_support(1)=1
X-RHN-Server-Capability: rhncfg.filetype.directory(1)=1
X-RHN-Server-Capability: registration.update_systemid(1)=1
X-RHN-Server-Capability: registration.register_osad(1)=1
X-RHN-Server-Capability: registration.delta_packages(1)=1
X-RHN-Server-Capability: cpu_sockets(1)=1
X-RHN-Server-Capability: ipv6(1)=1
X-RHN-Server-Capability: rhncfg.content.base64_decode(1)=1
X-RHN-Server-Capability: xmlrpc.packages.extended_profile(1-2)=1
X-RHN-Server-Capability: xmlrpc.errata.patch_names(1)=1
X-RHN-Server-Capability: xmlrpc.packages.checksums(1)=1
X-RHN-Server-Capability: xmlrpc.login.extra_data(1)=1
X-RHN-Proxy-Version: 0
X-Transport-Info: Extended Capabilities Transport (C) Red Hat, Inc
(version 2.5.72-1.el6)
X-RHN-Client-Version: 1
Connection: close
Content-Type: text/xml

<?xml version='1.0'?>
<methodResponse>
<params>
<param>
<value><string></string></value>
</param>
</params>
</methodResponse>


Full transaction at

https://gist.github.com/cswingler/f718abcb9ce290adec29

rhn_server_xmlrpc.log simply shows:

2015/01/26 16:52:07 -05:00 30997 172.29.7.14: xmlrpc/queue.get(1000015056,
2, 'checkins enabled')
2015/01/26 16:52:07 -05:00 30998 172.29.7.14:
xmlrpc/up2date.listChannels(1000015056,)
2015/01/26 16:52:08 -05:00 30995 172.29.7.14:
xmlrpc/registration.welcome_message('lang: None',)

Any basic things I should be checking? I've tried updating the
spacewalk/rhn tools on the agent, restarting Spacewalk itself, and nothing
seems to make a change. This issue, as far as I can recall, did not seem to
appear until after we upgraded to 2.2.

Some systems seem just fine, and I can't seem to find a consistent reason
why some succeed and others fail.

Thanks!
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