Hi !
I try to make a snmp "controller application"
I need some advices about the following problems:
My MIB contains a couple of (static) tables as well as a few scalar
variables.
I created mnesia tables - one for the scalar variables:
case mnesia:create_table(fourd_mib_variables, [{snmp, [{key, integer}]},
{attributes, record_info(fields, fourd_mib_variables)},
{disc_copies, ?HR}]) of
{atomic, ok} -> io:format("table fourd_mib_variables could
be created~n"),
ok;
{aborted,Reason} -> io:format("creation of database
fourd_mib_variables failed reason.~w~n",[Reason]),
Reason
end,
an one for every MIB-table:
case mnesia:create_table(criticalHrAProcessesList, [
{attributes, record_info(fields,criticalHrAProcessesList )},
{disc_copies, ?HR}]) of
{atomic, ok} -> io:format("table active_processes could be
created~n"),
ok;
{aborted,Reason2} -> io:format("creation of database
criticalHrAProcessesList failed reason.~w~n",[Reason2]),
Reason2
end,
1. question : is this a good idea ?
I can initialize the fourd_mib_variables table with no problems but it's
not clear to me how to initialize the
criticalHrAProcessesList table.
I tried to ask my agent without initialization and get the following
error message:
cmmc_4dp:start(). starting the application
reading config file 'cmmc.config'
sendPort = 1234
listenPort = 1235
sysContact = "dietmar.schaefer"
mibActive = 1
location = "Frankfurt"
mibVersion = "1.2 (19.10.2004)"
activeSwVersion = "1.4 (17.10.2004)"
inactiveSwVersion = "1.3 (15.6.2004)"
maxCriticalProcesses = 10
maxNonriticalProcesses = 8
maxInternalInterfaces = 3
maxExternalInterfaces = 3
maxApproachClients = 10
maxCenterClients = 30
sendport = 1234
listenport = 1235
initialisiere CMMC-Datenbank
success writing mnesia
success writing mnesia
CMMC-Datenbank initialisiert !
could not start snmp reason: {already_started,snmp}
ok
(cmmc@REDACTED)22> Src = 2
asking the agent:
snmpwalk -m +FOURD-1-2-MIB -Ob -Cc -v1 -c public wks2:1161 .enterprises
Mnesia(cmmc@REDACTED): <0.529.0> ({registered_name,snmp_master_agent})
val(mnesia_gvar, {criticalHrAProcessesList,{index,snmp}}) -> {badarg,
[{ets,
lookup_element,
[mnesia_gvar,
{criticalHrAProcessesList,
{index,
snmp}},
{mnesia_lib,
val,
1},
{mnesia_snmp_hook,
get_next_index,
2},
{rpc,
local_call,
3},
{mnesia,
do_dirty_rpc,
5},
{snmp_generic_mnesia,
table_next,
2},
{snmp_generic,
handle_table_next,
6},
{snmp_generic,
handle_table_next,
6},
{snmpa_agent,
get_next_values_all_rows,
6},
{snmpa_agent,
get_next_table,
4}]} {no_exists,
{criticalHrAProcessesList,
{index,
snmp}}}
=ERROR REPORT==== 10-Dec-2004::12:15:23 ===
** User error: Invalid return value
{'EXIT',{aborted,{badarg,[criticalHrAProcessesList,[]]}}} from
{snmp_generic,table_func,[{criticalHrAProcessesList,mnesia}]} (get_next)
Can someone point me to the right direction ?
Many thanks in advance
Dietmar