Hope this will help "
/*calling a set snmpset to reload the snmpd.conf file , set
UCD-SNMP-MIB::versionUpdateConfig.0 will reload the agent with new settings*/
--- On Wed, 2/4/09, Alexander Bubnov <[email protected]> wrote:
From: Alexander Bubnov <[email protected]>
Subject: Re: how to do reconnection by subagent in code?
To: [email protected]
Date: Wednesday, February 4, 2009, 2:38 PM
I noticed if I change MasterAgent address with help of
netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_X_SOCKET,...)
function then the new address is used in case connection is broken between
master- and sub- agents.
So, in order to change master address there is a need to set a new address and
break the connection.
Question: how to break connection in code, with help of net-snmp library
functions to apply a new address?
snmp_shutdown(...) is not right function because it shutdowns subagent forever,
as I understand. But I would like to break connection for a few milliseconds.
2009/2/2 Alexander Bubnov <[email protected]>
Hello!I would like to change subagent settings in runtime, for example by HUP
signal.
Settings are MasterAgent address, port and subagent ping interval.I tried:int
main()
{...init_agent("example-demon");init_snmp("example-demon");...}void
OnHupSignal() /*just an example, not real code*/
{/* CLOSE CONNECTION */
snmp_shutdown("example-demon");/* CHANGE SETTINGS
*/netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_X_SOCKET,
address.c_str());netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID,
NETSNMP_DS_AGENT_AGENTX_PING_INTERVAL, interval);
/* INIT AGAIN
*/init_agent("example-demon");init_snmp("example-demon");}reconnection is done
by init_snmp function(). But that function can be run once only, see below:
void
init_snmp(const char *type)
{
static int done_init = 0; /* To prevent double init's. */
if (done_init) {
return;
}
done_init = 1;
....
Is it possible to reconnect to MasterAgent in another way (without help of
exec(), fork() and etc.)? How to change settings correctly?Thanks in advance.--
/BR, Alexander
--
/BR, Alexander
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