net:snmpこれは、 perl を使用してテーブルをウォークスルーするために使用したコードです。
#! /usr/local/bin/perl
use strict;
use warnings;
use Net::SNMP qw(:snmp);
my $OID_hrSystem = '1.3.6.1.2.1.25.1';
my $OID_ifPhysAddress = '1.3.6.1.2.1.2.2.1.6';
my ($session, $error) = Net::SNMP->session(
-hostname => shift || 'localhost',
-community => shift || 'public',
-nonblocking => 1,
-translate => [-octetstring => 0],
-version => 'snmpv2c',
);
if (!defined $session) {
printf "ERROR: %s.\n", $error;
exit 1;
}
my %table; # Hash to store the results
my $result = $session->get_bulk_request(
-varbindlist => [ $OID_hrSystem ],
-callback => [ \&table_callback, \%table ],
-maxrepetitions => 10,
);
if (!defined $result) {
printf "ERROR: %s\n", $session->error();
$session->close();
exit 1;
}
# Now initiate the SNMP message exchange.
snmp_dispatcher();
$session->close();
# Print the results, specifically formatting ifPhysAddress.
for my $oid (oid_lex_sort(keys %table)) {
if (!oid_base_match($OID_ifPhysAddress, $oid)) {
printf "%s = %s\n", $oid, $table{$oid};
} else {
printf "%s = %s\n", $oid, unpack 'H*', $table{$oid};
}
}
exit 0;
sub table_callback
{
my ($session, $table) = @_;
my $list = $session->var_bind_list();
if (!defined $list) {
printf "ERROR: %s\n", $session->error();
return;
}
# Loop through each of the OIDs in the response and assign
# the key/value pairs to the reference that was passed with
# the callback. Make sure that we are still in the table
# before assigning the key/values.
my @names = $session->var_bind_names();
my $next = undef;
while (@names) {
$next = shift @names;
if (!oid_base_match($OID_hrSystem, $next)) {
return; # Table is done. chakri
}
$table->{$next} = $list->{$next};
}
# Table is not done, send another request, starting at the last
# OBJECT IDENTIFIER in the response. No need to include the
# calback argument, the same callback that was specified for the
# original request will be used.
my $result = $session->get_bulk_request(
-varbindlist => [ $next ],
-maxrepetitions => 10,
);
if (!defined $result) {
printf "ERROR: %s.\n", $session->error();
}
return;
}
出力は次のとおりです。
1.3.6.1.2.1.25.1.1.0 = 1 hour, 12:00.77
1.3.6.1.2.1.25.1.2.0 = �
+
1.3.6.1.2.1.25.1.3.0 = 1536
1.3.6.1.2.1.25.1.4.0 = BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic root=UUID=5c4c8d22-3cea-4410-aaad-f297c75d217e ro quiet splash vt.handoff=7
1.3.6.1.2.1.25.1.5.0 = 1
1.3.6.1.2.1.25.1.6.0 = 133
1.3.6.1.2.1.25.1.7.0 = 0
しかし、私にとって必要な出力は次のとおりです。
hrSystemUptime.0 = 1:08:54.36
hrSystemDate.0 = 2011-12-14,16:0:2.0,+1:0
hrSystemInitialLoadDevice.0 = 1536
hrSystemInitialLoadParameters.0 = "BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic root=UUID=5c4c8d22-3cea-4410-aaad-f297c75d217e ro quiet splash vt.handoff=7"
hrSystemNumUsers.0 = 1
hrSystemProcesses.0 = 133
hrSystemMaxProcesses.0 = 0
出力の主なことは、mib 値の代わりに mib 名を出力に出力することです。