Re: 5.4.1 won't talk

#1 (**permalink**) 04-16-2008

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Good call, Dave: I put the line in snmpd.conf and restarted. Everything came
up happily (and I noticed that /var/agentx/master exists as a socket, where
even the directory /var/agentx had not existed before). For some reason it
is behaving as if the subagent is not there, i.e. skipping over our subtree
when I do a "getnext". But I expect I can turn on DEBUG in the subagent and
track it down. If not, I'll get back to you...

Thanks,

Larry

On 4/16/08, Dave Shield <D.T.Shield@liverpool.ac.uk> wrote:
>
> 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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<div>Good call, Dave: I put the line in snmpd.conf and restarted. Everything came up happily (and I noticed that /var/agentx/master exists as a socket, where even the directory /var/agentx had not existed before). For some reason it is behaving as if the subagent is not there, i.e. skipping over our subtree when I do a "getnext". But I expect I can turn on DEBUG in the subagent and track it down. If not, I'll get back to you...</div>

<div> </div>
<div>Thanks,</div>
<div> </div>
<div>Larry  </div>
<div>On 4/16/08, Dave Shield <<a href="mailto:D.T.Shield@liverpool.ac.uk">D.T.Shiel d@liverpool.ac.uk</a>> wrote:
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">On 15/04/2008, Larry Dickson <<a href="mailto:ldickson@cuttedge.com">ldickson@cutte dge.com</a>> 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). 
>       &nbs p;                 Th is 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 </blockquote></div> 

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