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[snmp__if_combined] Reindent
This commit is contained in:
Olivier Mehani
parent
6ac458ace1
commit
ecb1d34814
1 changed files with 130 additions and 126 deletions
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@ -8,25 +8,29 @@ snmp__if_combined - SNMP card plugin to monitor the network interfaces of any ne
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=head1 APPLICABLE SYSTEMS
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Any SNMP capable networked computer equipment. Using a command such
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as "munin-node-configure --snmp switch.langfeldt.net --snmpversion 2c
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--snmpcommunity public | sh -x" should auto-detect all applicable
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interfaces. On a typical switch you will get one plugin pr. ethernet
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port. On a router you might get one plugin per VLAN interface.
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as
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munin-node-configure --snmp switch.langfeldt.net --snmpversion 2c --snmpcommunity public | sh -x
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should auto-detect all applicable interfaces. On a typical switch you will get
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one plugin pr. ethernet port. On a router you might get one plugin per VLAN
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interface.
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=head2 NOTABLE DIFFERENCE WITH SNMP__IF_MULTI
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The smnp__if_multi plugin records data in _bytes_ per second, and shows
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them as bps by using CDEFs when graphing. This plugin performs the
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multiplication upon reporting the value, and therefore doesn't have a
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CDEF in the graphing path.
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The `smnp__if_multi` plugin records data in _bytes_ per second, and shows them
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as bps by using CDEFs when graphing. This plugin performs the multiplication
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upon reporting the value, and therefore doesn't have a CDEF in the graphing
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path.
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This is important when migration from snmp__if_multi, for at least two aspects:
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This is important when migration from `snmp__if_multi`, for at least two
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aspects:
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- Reusing RRDs: it is not possible to just rename the old RRD files from
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smnp__if_multi, as historical data will be graphed as 8 times smaller than in
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reality. The stored values would need to be adjusted.
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`smnp__if_multi`, as historical data will be graphed as 8 times smaller than in
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reality. The stored values would need to be adjusted.
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- Data loaning: borrowing graphs no longer need to include a CDEF to convert
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bytes to bits. Conversely, they do now need a CDEF to convert bits to bytes.
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bytes to bits. Conversely, they do now need a CDEF to convert bits to bytes.
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To reflect this aspect explicitely, the root graph's totals are named
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recv_bits and send_bits.
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@ -37,10 +41,10 @@ As a rule SNMP plugins need site specific configuration. The default
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configuration (shown here) will only work on insecure sites/devices:
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[snmp_*]
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env.version 2
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env.community public
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env.ifTypeOnly ethernetCsmacd
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env.stackedRoot 1
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env.version 2
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env.community public
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env.ifTypeOnly ethernetCsmacd
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env.stackedRoot 1
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In general SNMP is not very secure at all unless you use SNMP version
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3 which supports authentication and privacy (encryption). But in any
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@ -70,9 +74,9 @@ would normally be for VPNs. A minor horde of different interface types
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are supposted, please see IANAifType-MIB (on your system or find with
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Google) for a full list.
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The stackedRoot option determines whether the root summary graph shows the traffic
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on each interface separately, or stacks them on top of one another to show the
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total traffic through the device.
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The `stackedRoot` option determines whether the root summary graph shows the
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traffic on each interface separately, or stacks them on top of one another to
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show the total traffic through the device.
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=head1 INTERPRETATION
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@ -85,7 +89,7 @@ two additional series are calculated to show the total usage of the device.
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Those series are useful for loaning into higher-level summary graphs (but see
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BUGS below).
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Sub-graphs are created, one per interface, akin to snmp__if_multi
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Sub-graphs are created, one per interface, akin to `snmp__if_multi`
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plugin.
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=head1 MIB INFORMATION
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@ -126,7 +130,7 @@ Should support indexing by
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When using the `stackedRoot` option, the total lines (`send_bits` and
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`recv_bits`) may sometimes jump to nonsensical values. This is a bug shared with
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the original snmp__if_multi.
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the original `snmp__if_multi`.
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This seems to be due to the way those series are calculated, by summing the
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current values of the other counters. The first issue is that of summing 64-bit
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@ -234,8 +238,8 @@ my $iface;
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# .1.3.6.1.2.1.31.1.1.1.10. Counter64 ifHCOutOctets
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if (defined $ARGV[0] and $ARGV[0] eq "snmpconf") {
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print "require 1.3.6.1.2.1.2.2.1.1.\n";
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exit 0;
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print "require 1.3.6.1.2.1.2.2.1.1.\n";
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exit 0;
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}
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my $stackedRoot = 0;
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@ -496,7 +500,7 @@ my %ifTypes = (
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x86Laps => 242,
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wwanPP => 243,
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wwanPP2 => 244
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);
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);
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my %ifTypeByNum = map { $ifTypes{$_} => $_; } keys %ifTypes;
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@ -510,33 +514,33 @@ sub do_collect {
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my $session = Munin::Plugin::SNMP->session();
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$snmpinfo = $session->get_hash(
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-baseoid => $ifOIDBase,
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-cols =>
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{ 2 => 'ifDescr',
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# Type: See above
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3 => 'ifType',
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5 => 'ifSpeed',
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# Oper: 1) up 2) down 3) testing
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# 4) unknown, 5) dormant 6) not present
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# 7) lowerLayerDown
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8 => 'ifOperStatus',
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10 => 'ifInOctets',
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13 => 'ifInDiscards',
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14 => 'ifInErrors',
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16 => 'ifOutOctets',
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19 => 'ifOutDiscards',
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20 => 'ifOutErrors',
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});
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-baseoid => $ifOIDBase,
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-cols => {
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2 => 'ifDescr',
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# Type: See above
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3 => 'ifType',
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5 => 'ifSpeed',
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# Oper: 1) up 2) down 3) testing
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# 4) unknown, 5) dormant 6) not present
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# 7) lowerLayerDown
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8 => 'ifOperStatus',
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10 => 'ifInOctets',
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13 => 'ifInDiscards',
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14 => 'ifInErrors',
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16 => 'ifOutOctets',
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19 => 'ifOutDiscards',
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20 => 'ifOutErrors',
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});
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# ifXEntry - SNMP v2 and up only - on some devices
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$snmpinfoX = $session->get_hash(
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-baseoid => $ifv2OIDBase,
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-cols =>
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{ 6 => 'ifHCInOctets',
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10 => 'ifHCOutOctets',
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15 => 'ifHighSpeed',
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18 => 'ifAlias',
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});
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-baseoid => $ifv2OIDBase,
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-cols => {
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6 => 'ifHCInOctets',
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10 => 'ifHCOutOctets',
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15 => 'ifHighSpeed',
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18 => 'ifAlias',
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});
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}
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@ -547,27 +551,27 @@ sub do_preprocess_if {
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my $response = $snmpinfo->{$if}->{ifType} || 1;
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if (defined($mediatype)) {
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if (defined($mediatype->{$response})) {
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# This is one of the interesting media types
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} else {
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# This media type is not interesting. Remove.
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delete $snmpinfo->{$if} if exists $snmpinfo->{$if};
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delete $snmpinfoX->{$if} if exists $snmpinfoX->{$if};
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return;
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}
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if (defined($mediatype->{$response})) {
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# This is one of the interesting media types
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} else {
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# This media type is not interesting. Remove.
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delete $snmpinfo->{$if} if exists $snmpinfo->{$if};
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delete $snmpinfoX->{$if} if exists $snmpinfoX->{$if};
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return;
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}
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}
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if (defined ($response = $snmpinfo->{$if}->{ifOperStatus})) {
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# 1 = up, 2 = down, 7 = lowerLayerDown
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if ($response == 2 or $response == 7) {
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# Fold recognized down states into one.
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$response = $snmpinfo->{$if}->{ifOperStatus} = 2;
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} elsif ($response != 1) {
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# This interface is fishy, remove and forget.
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delete $snmpinfo->{$if} if exists $snmpinfo->{$if};
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delete $snmpinfoX->{$if} if exists $snmpinfoX->{$if};
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return;
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}
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# 1 = up, 2 = down, 7 = lowerLayerDown
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if ($response == 2 or $response == 7) {
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# Fold recognized down states into one.
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$response = $snmpinfo->{$if}->{ifOperStatus} = 2;
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} elsif ($response != 1) {
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# This interface is fishy, remove and forget.
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delete $snmpinfo->{$if} if exists $snmpinfo->{$if};
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delete $snmpinfoX->{$if} if exists $snmpinfoX->{$if};
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return;
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}
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}
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}
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@ -576,7 +580,7 @@ sub do_preprocess {
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my $mediatypes = 'ALL';
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if (exists( $ENV{'ifTypeOnly'} )) {
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$mediatypes = $ENV{'ifTypeOnly'};
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$mediatypes = $ENV{'ifTypeOnly'};
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}
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my @mediatypes = split(/[ ,]+/,$mediatypes);
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@ -585,19 +589,19 @@ sub do_preprocess {
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my $mediatype={};
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if ($mediatypes eq 'ALL') {
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$mediatype = undef;
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$mediatype = undef;
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} else {
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foreach my $type (@mediatypes) {
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if (exists($ifTypes{$type})) {
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$mediatype->{$ifTypes{$type}} = 1;
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} else {
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die "Unknown media type '$type' specified in ifTypeOnly\n";
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}
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}
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foreach my $type (@mediatypes) {
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if (exists($ifTypes{$type})) {
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$mediatype->{$ifTypes{$type}} = 1;
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} else {
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die "Unknown media type '$type' specified in ifTypeOnly\n";
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}
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}
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}
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foreach my $if (keys %{$snmpinfo}) {
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do_preprocess_if($mediatype, $if);
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do_preprocess_if($mediatype, $if);
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}
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}
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@ -618,8 +622,8 @@ END
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print "graph_order";
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my @ifs;
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foreach my $if (sort {$a <=> $b} keys %{$snmpinfo}) {
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print " recv$if=snmp_if_combined.$if.recv send$if=snmp_if_combined.$if.send";
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push @ifs, "snmp_if_combined.$if";
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print " recv$if=snmp_if_combined.$if.recv send$if=snmp_if_combined.$if.send";
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push @ifs, "snmp_if_combined.$if";
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}
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if ($stackedRoot) {
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print " recv_bits send_bits";
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@ -629,23 +633,23 @@ END
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# XXX: For some reason, Munin doesn't resolve AREASTACK properly in this case...
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my $area_or_stack = "AREA";
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foreach my $if (sort {$a <=> $b} keys %{$snmpinfo}) {
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my $alias = $snmpinfoX->{$if}->{ifAlias} || $snmpinfo->{$if}->{ifDescr} || "Interface $if";
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my $alias = $snmpinfoX->{$if}->{ifAlias} || $snmpinfo->{$if}->{ifDescr} || "Interface $if";
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if (! ($alias =~ /\d+/) ) {
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# If there are no numbers in the $alias add the if index
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$alias .=" (if $if)";
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}
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if (! ($alias =~ /\d+/) ) {
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# If there are no numbers in the $alias add the if index
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$alias .=" (if $if)";
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}
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print <<END;
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print <<END;
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recv$if.label $alias
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recv$if.graph no
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send$if.label $alias
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send$if.negative recv$if
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END
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if ($stackedRoot) {
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print "send$if.draw $area_or_stack\n";
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$area_or_stack = "STACK";
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}
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if ($stackedRoot) {
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print "send$if.draw $area_or_stack\n";
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$area_or_stack = "STACK";
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}
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}
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if ($stackedRoot) {
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@ -684,19 +688,19 @@ END
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print "graph_order";
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foreach my $if (sort {$a <=> $b} keys %{$snmpinfo}) {
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print " recv$if=snmp_if_combined_err.$if.total_in send$if=snmp_if_combined_err.$if.total_out";
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print " recv$if=snmp_if_combined_err.$if.total_in send$if=snmp_if_combined_err.$if.total_out";
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}
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print "\n";
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foreach my $if (sort {$a <=> $b} keys %{$snmpinfo}) {
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my $alias = $snmpinfoX->{$if}->{ifAlias} || $snmpinfo->{$if}->{ifDescr} || "Interface $if";
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my $alias = $snmpinfoX->{$if}->{ifAlias} || $snmpinfo->{$if}->{ifDescr} || "Interface $if";
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if (! ($alias =~ /\d+/) ) {
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# If there are no numbers in the $alias add the if index
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$alias .=" (if $if)";
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}
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if (! ($alias =~ /\d+/) ) {
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# If there are no numbers in the $alias add the if index
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$alias .=" (if $if)";
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}
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print <<END;
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print <<END;
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recv$if.label $alias
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recv$if.graph no
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send$if.label $alias
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@ -711,8 +715,8 @@ sub do_config_if {
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my $alias = $snmpinfoX->{$if}->{ifAlias} || $snmpinfo->{$if}->{ifDescr} || "Interface $if";
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if (! ($alias =~ /\d+/) ) {
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# If there are no numbers in the $alias add the if index
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$alias .=" (if $if)";
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# If there are no numbers in the $alias add the if index
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$alias .=" (if $if)";
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}
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my $warn = undef;
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@ -721,28 +725,28 @@ sub do_config_if {
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my $extrainfo="";
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if (defined ($snmpinfoX->{$if}->{ifHCInOctets})) {
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# If we get an answer at the 64 bit OID then this switch
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# supports the extended MIB
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# If we get an answer at the 64 bit OID then this switch
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# supports the extended MIB
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$extrainfo .= " This switch supports 64 bit byte counters and these are used by this plugin.";
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$extrainfo .= " This switch supports 64 bit byte counters and these are used by this plugin.";
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} else {
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# If not we only have a 32 bit counter and are lost.
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$extrainfo .= " NOTE! This switch supports only 32 bit byte counters which makes the plugin unreliable and unsuitable for most 100Mb (or faster) interfaces, where bursts are expected to exceed 50Mbps. This means that for interfaces where much traffic is sent this plugin will report false throughputs and cannot be trusted.";
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# If not we only have a 32 bit counter and are lost.
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$extrainfo .= " NOTE! This switch supports only 32 bit byte counters which makes the plugin unreliable and unsuitable for most 100Mb (or faster) interfaces, where bursts are expected to exceed 50Mbps. This means that for interfaces where much traffic is sent this plugin will report false throughputs and cannot be trusted.";
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# unless perhaps the operator can get us snmp version 2c or 3?
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$extrainfo .= " I notice that you use SNMP version 1 which does not support 64 bit quantities. You may get better results if you switch to SNMP version 2c or 3. Please refer to the plugin documentation."
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if $version == 1;
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# unless perhaps the operator can get us snmp version 2c or 3?
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$extrainfo .= " I notice that you use SNMP version 1 which does not support 64 bit quantities. You may get better results if you switch to SNMP version 2c or 3. Please refer to the plugin documentation."
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if $version == 1;
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}
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if (defined ($speed = $snmpinfoX->{$if}->{ifHighSpeed}) and $speed) {
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# Speed in 1,000,000 bits per second
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$speed = $speed * 1000000;
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$warn = $speed / 75 * 100;
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# Speed in 1,000,000 bits per second
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$speed = $speed * 1000000;
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$warn = $speed / 75 * 100;
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my $textspeed = scaleNumber($speed,'bps','',
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'The interface speed is %.1f%s%s.');
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my $textspeed = scaleNumber($speed,'bps','',
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'The interface speed is %.1f%s%s.');
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$extrainfo .= ' '.$textspeed if $textspeed;
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$extrainfo .= ' '.$textspeed if $textspeed;
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} elsif (defined ($speed = $snmpinfo->{$if}->{ifSpeed}) and $speed) {
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# Speed in bits pr. second
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$warn = $speed*100/75;
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@ -775,11 +779,11 @@ send.min 0
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END
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if ( defined($speed) ) {
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printf("recv.max %s\nsend.max %s\n", $speed, $speed);
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printf("recv.max %s\nsend.max %s\n", $speed, $speed);
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}
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if ( defined($warn) ) {
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printf("recv.warning %s\nsend.warning %s\n", $warn, $warn);
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printf("recv.warning %s\nsend.warning %s\n", $warn, $warn);
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}
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print <<END;
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@ -867,22 +871,22 @@ END
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my $errors = $snmpinfo->{$if}->{ifInErrors};
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my $discards = $snmpinfo->{$if}->{ifInDiscards};
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printf("errors_in.value %s\n".
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"discards_in.value %s\n".
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"total_in.value %s\n",
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$errors || "U",
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$discards || "U",
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($errors || 0) + ($discards || 0)
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);
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"discards_in.value %s\n".
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"total_in.value %s\n",
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$errors || "U",
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$discards || "U",
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($errors || 0) + ($discards || 0)
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);
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$errors = $snmpinfo->{$if}->{ifOutErrors};
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$discards = $snmpinfo->{$if}->{ifOutDiscards};
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printf("errors_out.value %s\n".
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"discards_out.value %s\n".
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"total_out.value %s\n",
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$errors || "U",
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$discards || "U",
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($errors || 0) + ($discards || 0)
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);
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"discards_out.value %s\n".
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"total_out.value %s\n",
|
||||
$errors || "U",
|
||||
$discards || "U",
|
||||
($errors || 0) + ($discards || 0)
|
||||
);
|
||||
|
||||
return ($recv, $send);
|
||||
}
|
||||
|
|
@ -894,7 +898,7 @@ sub do_config {
|
|||
print "host_name $host\n" unless $host eq 'localhost';
|
||||
|
||||
foreach my $if (sort {$a <=> $b} keys %{$snmpinfo}) {
|
||||
do_config_if($host,$version,$if);
|
||||
do_config_if($host,$version,$if);
|
||||
}
|
||||
|
||||
do_config_root($host,$version);
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue