Re: 5.4.1 won't talk

On 15/04/2008, Larry Dickson <ldickson@cuttedge.com> wrote:
> netsnmp_assert !"registration != duplicate" failed
> agent_registry.c:535 netsnmp_subtree_load()
> netsnmp_assert !"registration != duplicate" failed
> agent_registry.c:535 netsnmp_subtree_load()
> netsnmp_assert !"registration != duplicate" failed
> agent_registry.c:535 netsnmp_subtree_load()

You can ignore those - they're harmless.


> Turning on AgentX master support.
> Error: Couldn't open a master agentx socket to listen on ():

Who are you running this agent as? Root, or a different user?

Do you have an "agentXSocket" directive in your snmpd.conf file?
What AgentX-related config settings do you have?

Does the directory /var/agentx exist before you start the agent?
What about the socket /var/agentx/master
(both before and after starting the agent).


> This means agentx_sockets =
> strdup(netsnmp_get_string(NETSNMP_DS_APPLICATION_I D,
> NETSNMP_DS_AGENT_X_SOCKET)) returned nothing

That's normal.
This is the mechanism for overriding the default AgentX socket
(either via the 'AgentXSocket' config directive, or the -x command
line option).


The issue actually lies with setting the default value (a few lines later).
This changed from
agentx_sockets = strdup( {NETSNMP_}AGENTX_SOCKET );

in the 5.2.x and 5.3.x lines, and is now
agentx_sockets = strdup( "" );

This was part of SVN revision 15258, aimed at introducing a
more flexible transport creation mechanism. It may be that
this has broken (or changed) the default AgentX behaviour.

A simple workaround would be to specify the AgentX port
explicitly - either in the snmpd.conf file

agentXSocket /var/agentx/master

or on the command line

snmpd -x /var/agentx/master .....

Dave

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