FreeBSD [ifstat] processing

list Nicolas Lienard
Wed, 16 Dec 2015 22:08:12 +0100
Message-Id: <user-94966c57de6d@xymon.invalid>

Hi Mark,

You made my day!

I was experiencing some weird issue on some boxes  (vtnetX) and other were good (em0 which is short).

Thanks for spotting this issue and especially with the quick fix.

Regards
Nicolas Lienard

Le 15 déc. 2015 à 19:28, Mark Felder <user-db141d317836@xymon.invalid> a écrit :


On Mon, Dec 14, 2015, at 11:24, Nico wrote:

So I'm proposing that the FreeBSD client be adjusted from this:

echo "[ifstat]"
netstat -i -b -n | egrep -v "^lo|<Link"

To this:

echo "[ifstat]"
netstat -i -b -n | egrep "<Link"

Seem reasonable?  Would anyone be adversely impacted by this suggested
change?

I just discovered a bug here, too. We need the -W flag for netstat to
not truncate interface names.

before:

# netstat -ibn | egrep "<Link|Name" | grep -v ^lo
Name    Mtu Network       Address              Ipkts Ierrs Idrop
Ibytes    Opkts Oerrs     Obytes  Coll
re0    1500 <Link#1>      00:0d:b9:34:19:5c 128999557     0     0
179670093890 69675563     0 15695977843     0
re1    1500 <Link#2>      00:0d:b9:34:19:5d 70513275     0     0
16032274028 128924310     0 177694695608     0
re2*   1500 <Link#3>      00:0d:b9:34:19:5e        0     0     0
0        0     0          0     0
bridg  1500 <Link#6>      02:77:b6:ed:58:00 70254277     0     0
16036199705 129805702   210 179003594406     0
gif0   1280 <Link#7>      gif0               5346546     0     0
5718534418  4031610     6 2016239779     0
tun0   1500 <Link#8>      tun0                   910     0     0
120939      969     0     654231     0
tun1*  1500 <Link#9>      tun1                     0     0     0
0        0     0          0     0
vlan5  1500 <Link#10>     00:0d:b9:34:19:5d   476021     0     0
68166196   593906     0  598099212     0


after:

# netstat -ibnW | egrep "<Link|Name" | grep -v ^lo
Name      Mtu Network                  Address
       Ipkts Ierrs Idrop     Ibytes    Opkts Oerrs     Obytes  Coll
re0      1500 <Link#1>                 00:0d:b9:34:19:5c
    128999730     0     0 179670121877 69675731     0 15696092809
0
re1      1500 <Link#2>                 00:0d:b9:34:19:5d
    70513451     0     0 16032379270 128924498     0 177694722117
0
re2*     1500 <Link#3>                 00:0d:b9:34:19:5e
           0     0     0          0        0     0          0     0
bridge0  1500 <Link#6>                 02:77:b6:ed:58:00
    70254415     0     0 16036300636 129805863   210 179003607634
0
gif0     1280 <Link#7>                 gif0
     5346580     0     0 5718537650  4031628     6 2016242843     0
tun0     1500 <Link#8>                 tun0
         910     0     0     120939      969     0     654231     0
tun1*    1500 <Link#9>                 tun1
           0     0     0          0        0     0          0     0
vlan5    1500 <Link#10>                00:0d:b9:34:19:5d
      476054     0     0   68170092   593933     0  598112493     0

If we don't have the -W flag long interface names may be confused by
Xymon. eg, bridge0 bridge1 bridge2 will all be seen as "bridg" like this
rrd file indicates: data/gw.feld.me/ifstat.bridg.rrd


--
Mark Felder
user-db141d317836@xymon.invalid