Frustration with Disk Monitoring

permalink · #1 (**permalink**) 12-15-2005

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Hello all,
I've been messing around with the RHEL 4 installation of Net-SNMP and
after reading the docs ( man snmpd.conf ) I've tried to monitor the
disks on my system. Its been failing miserably with "token" errors. I
guessed that I need to compile my own version of net-snmp so I did and
did so with these options.

../configure --with-perl-modules --with-mib-modules=3D"disman/event-mib"

I was hoping that by using this it would work but now I'm getting
slightly different errors. Seems like progress though.

Dec 15 14:45:20 w72l-tux kernel: audit(1134675920.917:0): avc: denied
{ getattr } for pid=3D9101 exe=3D/usr/sbin/snmpd path=3D/home =
dev=3Dhda4 ino=3D2
scontext=3Droot:system_r:snmpd_t =
tcontext=3Dsystem_u:object_r:home_root_t
tclass=3Ddir

I really have no idea what it is complaining about. Can anybody tell me
? Here is my snmpd.conf

################################################## ######################
###
#
# snmpd.conf
#
# - created by the snmpconf configuration program
#
################################################## ######################
###
# SECTION: Trap Destinations
#
# Here we define who the agent will send traps to.

# trap2sink: A SNMPv2c trap receiver
# arguments: host [community] [portnum]

trap2sink netcool
trap2sink 209.243.240.105

# informsink: A SNMPv2c inform (acknowledged trap) receiver
# arguments: host [community] [portnum]

informsink 209.243.240.105

# trapcommunity: Default trap sink community to use
# arguments: community-string

trapcommunity SPG-UnxVisi0n
trapcommunity public

# authtrapenable: Should we send traps when authentication failures
occur
# arguments: 1 | 2 (1 =3D yes, 2 =3D no)

authtrapenable 1

################################################## ######################
###
# SECTION: System Information Setup
#
# This section defines some of the information reported in
# the "system" mib group in the mibII tree.

# syslocation: The [typically physical] location of the system.
# Note that setting this value here means that when trying to
# perform an snmp SET operation to the sysLocation.0 variable will
make
# the agent return the "notWritable" error code. IE, including
# this token in the snmpd.conf file will disable write access to
# the variable.
# arguments: location_string

syslocation "Siemens Power Generation"

# syscontact: The contact information for the administrator
# Note that setting this value here means that when trying to
# perform an snmp SET operation to the sysContact.0 variable will make
# the agent return the "notWritable" error code. IE, including
# this token in the snmpd.conf file will disable write access to
# the variable.
# arguments: contact_string

syscontact "PG IT Root itroot@swpc.siemens.com"

################################################## ######################
###
# SECTION: Monitor Various Aspects of the Running Host
#
# The following check up on various aspects of a host.

# disk: Check for disk space usage of a partition.
# The agent can check the amount of available disk space, and make
# sure it is above a set limit.
#
# disk PATH [MIN=3D100000]
#
# PATH: mount path to the disk in question.
# MIN: Disks with space below this value will have the Mib's
errorFlag set.
# Can be a raw byte value or a percentage followed by the %
# symbol. Default value =3D 100000.
#
# The results are reported in the dskTable section of the UCD-SNMP-MIB
tree

disk /home 90%

agentSecName internal
rouser internal

monitor -o dskPath -o dskErrorMsg "dskTable" dskErrorFlag !=3D 0
#monitor -u root -i -r 30 -o dskPath.1 -o dskErrorMsg.1 "home file
system" dskErrorFlag.1 !=3D0

# load: Check for unreasonable load average values.
# Watch the load average levels on the machine.
#
# load [1MAX=3D12.0] [5MAX=3D12.0] [15MAX=3D12.0]
#
# 1MAX: If the 1 minute load average is above this limit at query
# time, the errorFlag will be set.
# 5MAX: Similar, but for 5 min average.
# 15MAX: Similar, but for 15 min average.
#
# The results are reported in the laTable section of the UCD-SNMP-MIB
tree

# load 5.5 5.5 5.5

################################################## ######################
###
# SECTION: Access Control Setup
#
# This section defines who is allowed to talk to your running
# snmp agent.

# rocommunity: a SNMPv1/SNMPv2c read-only access community name
# arguments: community [default|hostname|network/bits] [oid]

rocommunity xxxx localhost
rocommunity xxxx pg-mon-01
rocommunity xxxx pg-mon-02
rocommunity xxxx pg-mon-03
rocommunity xxxx pg-mon-04
rocommunity xxxx pg-mon-05
rocommunity xxxx pg-mon-06
rocommunity xxxx pg-mon-07
rocommunity xxxx pg-mon-08
rocommunity xxxx pg-mon-09
rocommunity xxxx pg-mon-10
rocommunity xxxx netcool
rocommunity xxxx nnm
rocommunity xxxx ehealth

Jack

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<TITLE>Frustration with Disk Monitoring</TITLE>
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Hello all,

  I've been messing around with =
the RHEL 4 installation of Net-SNMP and after reading the docs ( man =
snmpd.conf ) I've tried to monitor the disks on my system.  Its =
been failing miserably with "token" errors.  I guessed =
that I need to compile my own version of net-snmp so I did and did so =
with these options.

./configure --with-perl-modules =
--with-mib-modules=3D"disman/event-mib"


I was hoping that by using this it =
would work but now I'm getting slightly different errors.  Seems =
like progress though.

Dec 15 14:45:20 w72l-tux kernel: =
audit(1134675920.917:0): avc:  denied  { getattr } for  =
pid=3D9101 exe=3D/usr/sbin/snmpd path=3D/home dev=3Dhda4 ino=3D2 =
scontext=3Droot:system_r:snmpd_t =
tcontext=3Dsystem_u:object_r:home_root_t tclass=3Ddir

I really have no idea what it is =
complaining about.  Can anybody tell me ? Here is my =
snmpd.conf

 

################################### #######################=
#################

 #

 # snmpd.conf

 #

 #   - created by the =
snmpconf configuration program

 #

 ################################### #######################=
#################

 # SECTION: Trap Destinations

 #

 #   Here we define who the =
agent will send traps to.


# trap2sink: A SNMPv2c trap =
receiver

 #   arguments: host =
[community] [portnum]


trap2sink  netcool

 trap2sink  209.243.240.105


# informsink: A SNMPv2c inform =
(acknowledged trap) receiver

 #   arguments: host =
[community] [portnum]


informsink  209.243.240.105


# trapcommunity: Default trap sink =
community to use

 #   arguments: =
community-string


trapcommunity  =
SPG-UnxVisi0n

 trapcommunity  public


# authtrapenable: Should we send traps =
when authentication failures occur

 #   arguments: 1 | =
2   (1 =3D yes, 2 =3D no)


authtrapenable  1

 
 

################################### #######################=
#################

 # SECTION: System Information =
Setup

 #

 #   This section defines =
some of the information reported in

 #   the "system" =
mib group in the mibII tree.


# syslocation: The [typically physical] =
location of the system.

 #   Note that setting this =
value here means that when trying to

 #   perform an snmp SET =
operation to the sysLocation.0 variable will make

 #   the agent return the =
"notWritable" error code.  IE, including

 #   this token in the =
snmpd.conf file will disable write access to

 #   the variable.

 #   arguments:  =
location_string


syslocation  "Siemens Power =
Generation"


# syscontact: The contact information =
for the administrator

 #   Note that setting this =
value here means that when trying to

 #   perform an snmp SET =
operation to the sysContact.0 variable will make

 #   the agent return the =
"notWritable" error code.  IE, including

 #   this token in the =
snmpd.conf file will disable write access to

 #   the variable.

 #   arguments:  =
contact_string


syscontact    & nbsp; "PG IT Root =
itroot@swpc.siemens.com"

 
 

################################### #######################=
#################

 # SECTION: Monitor Various Aspects of =
the Running Host

 #

 #   The following check up =
on various aspects of a host.


# disk: Check for disk space usage of a =
partition.

 #   The agent can check the =
amount of available disk space, and make

 #   sure it is above a set =
limit.

 #

 #    disk PATH =
[MIN=3D100000]

 #

 #    PATH:  mount =
path to the disk in question.

 #    MIN:   =
Disks with space below this value will have the Mib's errorFlag =
set.

 #     &nbs p;   &nb=
sp; Can be a raw byte value or a percentage followed by the %

 #     &nbs p;   &nb=
sp; symbol.  Default value =3D 100000.

 #

 #   The results are reported =
in the dskTable section of the UCD-SNMP-MIB tree


disk  /home 90%


agentSecName internal

 rouser internal


monitor   -o dskPath -o =
dskErrorMsg "dskTable" dskErrorFlag !=3D 0

 #monitor -u root -i -r 30 -o dskPath.1 =
-o dskErrorMsg.1 "home file system" dskErrorFlag.1 =
!=3D0


# load: Check for unreasonable load =
average values.

 #   Watch the load average =
levels on the machine.

 #

 #    load [1MAX=3D12.0] =
[5MAX=3D12.0] [15MAX=3D12.0]

 #

 #    1MAX:   =
If the 1 minute load average is above this limit at query

 #     &nbs p;   &nb=
sp;  time, the errorFlag will be set.

 #    5MAX:   =
Similar, but for 5 min average.

 #    15MAX:  =
Similar, but for 15 min average.

 #

 #   The results are reported =
in the laTable section of the UCD-SNMP-MIB tree


# load  5.5 5.5 5.5

 
 

################################### #######################=
#################

 # SECTION: Access Control Setup

 #

 #   This section defines who =
is allowed to talk to your running

 #   snmp agent.


# rocommunity: a SNMPv1/SNMPv2c =
read-only access community name

 #   arguments:  =
community [default|hostname|network/bits] [oid]


rocommunity xxxx localhost

 rocommunity xxxx pg-mon-01

 rocommunity xxxx pg-mon-02

 rocommunity xxxx pg-mon-03

 rocommunity xxxx pg-mon-04

 rocommunity xxxx pg-mon-05

 rocommunity xxxx pg-mon-06

 rocommunity xxxx pg-mon-07

 rocommunity xxxx pg-mon-08

 rocommunity xxxx pg-mon-09

 rocommunity xxxx pg-mon-10

 rocommunity xxxx netcool

 rocommunity xxxx nnm

 rocommunity xxxx ehealth


Jack


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