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# 1  
Old 01-25-2011
snmptrapd
Hi everybody,

I'm trying to run a SNMP supervisor on Debian Lenny to supervise Uninteruptible Power Systems which support SNMP. I've installed snmp and snmpd debian packages for NET-SNMP 5.4.1 et i've configured /etc/snmp file with the snmpconf perl script :

file /etc/snmp/snmp.conf
Code:
# snmp.conf
# Configuration du superviseur SNMP (snmpd)

# SECTION: Debugging output options

#dodebugging  0
#dumppacket  no
#notokenwarnings  yes

# SECTION: Output style options

logtimestamp  yes
printnumericenums  1
printnumericoids  no
dontbreakdownoids  yes
escapequotes  no
quickprinting  yes
numerictimeticks  yes
suffixprinting  1

# SECTION: Textual mib parsing

mibdirs  /etc/snmp/mibs:/usr/share/snmp/mibs
#mibdirs  /etc/snmp/mibs
showmiberrors  no
mibwarninglevel  2
strictcommentterm  1
miballowunderline  no
mibreplacewithlatest  no


# SECTION: Default Authentication Options
# port UDP, version de SNMP, groupe snmp pour ecriture

defaultport  161
defversion  1
defcommunity  perso


# Access Control

#       sec.name  source          community
com2sec paranoid  default         public
com2sec readonly  default         public
com2sec readwrite default         askco

#                sec.model  sec.name
group MyROSystem v1        paranoid
group MyROSystem v2c       paranoid
group MyROSystem usm       paranoid
group MyROGroup v1         readonly
group MyROGroup v2c        readonly
group MyROGroup usm        readonly
group MyRWGroup v1         readwrite
group MyRWGroup v2c        readwrite
group MyRWGroup usm        readwrite

#           incl/excl subtree                          mask
view all    included  .1                               80
view system included  .iso.org.dod.internet.mgmt.mib-2.system

#                context sec.model sec.level match  read   write  notif
access MyROSystem ""     any       noauth    exact  system none   none
access MyROGroup ""      any       noauth    exact  all    none   none
access MyRWGroup ""      any       noauth    exact  all    all    none

file /etc/snmp/snmptrapd.conf
Code:
# snmptrapd.conf:
# Gestion des messages d'alertes (trap) par le service
# de gestion des alertes (snmptrapd)

#   Runtime options
#pidfile  /var/run/snmptrapd.pid

# SECTION: Output formatting for traps received.
format2 %02.2l/%02.2m/%y %02.2h:%02.2j:%02.2k %W de %A\n

# SECTION: Logging options
donotlogtraps  no
logoption s 2
logoption f /var/log/snmptrapd.log
outputoption  S
printeventnumbers  yes

# SECTION: Trap Handlers / Traitement des alertes

#traphandle " .oid" /chemin/programme "arguments"
traphandle default /usr/bin/eject
# notice : I've tried other OIDs

# SECTION: Authentication options
ignoreauthfailure  no

# Access Control

#       sec.name  source          community
com2sec paranoid  default         public
com2sec readonly  default         public
com2sec readwrite default         perso

#                sec.model  sec.name
group MyROSystem v1        paranoid
group MyROSystem v2c       paranoid
group MyROSystem usm       paranoid
group MyROGroup v1         readonly
group MyROGroup v2c        readonly
group MyROGroup usm        readonly
group MyRWGroup v1         readwrite
group MyRWGroup v2c        readwrite
group MyRWGroup usm        readwrite

#           incl/excl subtree                          mask
view all    included  .1                               80
#view system included  .iso.org.dod.internet.mgmt.mib-2

#                context sec.model sec.level match  read   write  notif
access MyROSystem ""     any       noauth    exact  none   none   none
access MyROGroup ""      any       noauth    exact  all    none   none
access MyRWGroup ""      any       noauth    exact  all    all    none

The /etc/snmpd.conf file is empty because I do not want a SNMP agent on the supervisor.

I launch with :
Code:
#!/bin/bash
killall snmpd
killall snmptrapd
snmpd -d -c /etc/snmp/snmp.conf
snmptrapd -d -c /etc/snmp/snmptrapd.conf

with -d option to get debug logs. In the syslog file I can read :

Code:
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0000: 30 58 02 01  00 04 05 61  73 6B 63 6F  A4 4C 06 0B    0X.....perso.L..
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0000: 30 58 02 01  00 04 05 61  73 6B 63 6F  A4 4C 06 0B    0X.....perso.L..
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0016: 2B 06 01 04  01 93 24 01  02 01 02 40  04 C0 A8 00    +.....$....@....
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0016: 2B 06 01 04  01 93 24 01  02 01 02 40  04 C0 A8 00    +.....$....@....
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0032: 01 02 01 06  02 01 02 43  03 0B 09 89  30 2C 30 2A    .......C....0,0*
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0032: 01 02 01 06  02 01 02 43  03 0B 09 89  30 2C 30 2A    .......C....0,0*
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0048: 06 0B 2B 06  01 04 01 93  24 01 02 01  02 04 1B 55    ..+.....$......U
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0048: 06 0B 2B 06  01 04 01 93  24 01 02 01  02 04 1B 55    ..+.....$......U
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0064: 74 69 6C 69  74 79 20 70  6F 77 65 72  20 6E 6F 74    tility power not
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0064: 74 69 6C 69  74 79 20 70  6F 77 65 72  20 6E 6F 74    tility power not
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0080: 20 61 76 61  69 6C 61 62  6C 65                        available
Jan 21 10:57:03 pi02-deb1 snmptrapd[3054]: 0080: 20 61 76 61  69 6C 61 62  6C 65                        available

So the trap is well received but unfortunately the action associated to the traphandle (to open the cd tray with /bin/eject) fails Smilie I've tried other commands, the problem is with the traphandle instruction ...

On the web many people got this problem but I didn't manage to find any answer ...

Thanks in advance for your help and sorry for my bad English.

---------- Post updated 01-25-11 at 02:15 AM ---------- Previous update was 01-24-11 at 03:46 AM ----------

got the solution :

We had to add this line in the snmptrapd.conf file :
authCommunity log,execute,net public

the execute keyword permit executing external programs from the trap handling system.
This User Gave Thanks to dedibox For This Post:
samnyc
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