rwcommunity in snmpd.conf ignored by snmpd ("unknown token" in

Paul Cerqua

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Apr 13, 2008, 7:24:44 PM4/13/08

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Hello, all.

I've developed a couple of SNMP subagents over the last few months using ne=
t-snmp with good results. I've bumped into an issue involving rwcommunity =
that I don't quite understand and am hoping that somebody can give me an "A=
HA!" insight.

I'm using version 5.3.1 and only supporting V1 and V2c. I have two copies =
of snmpd running on a single system, each listening on different interfaces=
. One of these is the "master" and has its snmpd.conf file in a non-standa=
rd directory (I've defined the location using SNMPCONFPATH).

The issue here is that this snmpd master process appears to be ignoring the=
rwcommunity definition in its snmpd.conf file. I can specify any communit=
y on an snmpwalk and have it "succeed" when accessing this system.

The only hint I have as to what might be going on is something I noticed wh=
en turning on full debugging using -DALL. =20
The rwcommunity token is accessed twice by the snmpd master process; it rec=
ognizes it the first time, but not the second time ("unknown token"). This=
is true whether or not I prefix rwcommunity with [snmpd]. Also, I tried s=
pecifying the community via --rwcommunity=3D"prince" and had the same resul=
ts.

Here are some snippets from the debug log file:

read_config: config path used for
snmpd:/etc/snmp/master:/usr/share/snmp:/usr/lib/snmp:/root/.snmp (persisten=
t
path:/var/net-snmp)

=20

read_config:
Reading configuration /etc/snmp/master/snmpd.conf

trace:
read_config(): read_config.c, 779:

read_config:
/etc/snmp/master/snmpd.conf:70 examining: master agentx

trace:
read_config(): read_config.c, 779:

read_config:
/etc/snmp/master/snmpd.conf:75 examining: agentuser root

trace:
read_config(): read_config.c, 779:

read_config:
/etc/snmp/master/snmpd.conf:86 examining: agentxsocket localhost:722

trace:
read_config(): read_config.c, 779:

read_config:
/etc/snmp/master/snmpd.conf:87 examining: smuxsocket 1.0.0.0

trace:
read_config(): read_config.c, 779:

read_config:
/etc/snmp/master/snmpd.conf:126 examining: rwcommunity prince

.

trace:
netsnmp_ds_set_string(): default_store.c, 283:

netsnmp_ds_set_string:
Setting APP:5 =3D "1.0.0.0"

trace:
read_config(): read_config.c, 779:

read_config:
/etc/snmp/master/snmpd.conf:126 examining: rwcommunity prince

/etc/snmp/master/snmpd.conf:
line 126: Warning: Unknown token: rwcommunity.

=20

Here are similar snippets using [snmpd] and using --rwcommunity:

=20

trace:
read_config(): read_config.c, 756:

read_config:
Switching to new context: (this line only) snmpd

trace:
read_config(): read_config.c, 779:

read_config:
/etc/snmp/master/snmpd.conf:126 examining: [snmpd] rwcommunity prince

.

trace:
read_config(): read_config.c, 779:

read_config:
/etc/snmp/master/snmpd.conf:126 examining: [snmpd] rwcommunity prince

/etc/snmp/master/snmpd.conf:
line 126: Warning: Unknown token: rwcommunity.

=20

**

=20

trace:
netsnmp_config_process_memory_list(): read_config.c, 631:

read_config:
processing memory: rwcommunity prince

.

=20

trace:
netsnmp_config_process_memory_list(): read_config.c, 631:

read_config:
processing memory: rwcommunity prince

: line 0:
Warning: Unknown token: rwcommunity.

=20

Is there anything obvious here that I'm missing?

Thanks,
Paul

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 Hello, all. I've developed a couple of SNMP subagents over the l=
ast few months using net-snmp with good results.  I've bumped into an =
issue involving rwcommunity that I don't quite understand and am hoping tha=
t somebody can give me an "AHA!" insight. I'm using version 5.3.1 an=
d only supporting V1 and V2c.  I have two copies of snmpd running on a=
single system, each listening on different interfaces.  One of these =
is the "master" and has its snmpd.conf file in a non-standard directory (I'=
ve defined the location using SNMPCONFPATH). The issue here is that =
this snmpd master process appears to be ignoring the rwcommunity definition=
in its snmpd.conf file.  I can specify any community on an snmpwalk a=
nd have it "succeed" when accessing this system. The only hint I hav=
e as to what might be going on is something I noticed when turning on full =
debugging using -DALL.  The rwcommunity token is accessed twice by=
the snmpd master process; it recognizes it the first time, but not the sec=
ond time ("unknown token").  This is true whether or not I prefix rwco=
mmunity with [snmpd].  Also, I tried specifying the community via --rw=
community=3D"prince" and had the same results. Here are some snippet=
s from the debug log file:

read_config:  config path used for
snmpd:/etc/snmp/master:/usr/share/snmp:/usr/lib/snmp:/root/.snmp (persisten=
t
path:/var/net-snmp)<o:p></o:p>

<o:p> </o:p>

read_config:
Reading configuration /etc/snmp/master/snmpd.conf<o:p></o:p>

trace:
read_config(): read_config.c, 779:<o:p></o:p>

read_config:
/etc/snmp/master/snmpd.conf:70 examining: master  </s=
pan>agentx<o:p></o:p>

trace:
read_config(): read_config.c, 779:<o:p></o:p>

read_config:
/etc/snmp/master/snmpd.conf:75 examining: agentuser  =
root<o:p></o:p>

trace:
read_config(): read_config.c, 779:<o:p></o:p>

read_config:
/etc/snmp/master/snmpd.conf:86 examining: agentxsocket&nbs=
p; localhost:722<o:p></o:p>

trace:
read_config(): read_config.c, 779:<o:p></o:p>

read_config:
/etc/snmp/master/snmpd.conf:87 examining: smuxsocket 1.0.0.0<o:p></o:p></sp=
an>

trace:
read_config(): read_config.c, 779:<o:p></o:p>

read_config:
/etc/snmp/master/snmpd.conf:126 examining: rwcommunity prince<o:p></o:p></s=
pan>

.<o:p></o:p>

trace:
netsnmp_ds_set_string(): default_store.c, 283:<o:p></o:p>

netsnmp_ds_set_string:
Setting APP:5 =3D "1.0.0.0"<o:p></o:p>

trace:
read_config(): read_config.c, 779:<o:p></o:p>

read_config:
/etc/snmp/master/snmpd.conf:126 examining: rwcommunity prince<o:p></o:p></s=
pan>

/etc/snmp/master/snmpd.conf:
line 126: Warning: Unknown token: rwcommunity.<o:p></o:p>

<o:p> </o:p>

Here are similar snippets using [snmpd] and using --rwcommunity: <br=
>

<o:p> </o:p>

trace:
read_config(): read_config.c, 756:<o:p></o:p>

read_config:
Switching to new context: (this line only) snmpd<o:p></o:p>

trace:
read_config(): read_config.c, 779:<o:p></o:p>

read_config:
/etc/snmp/master/snmpd.conf:126 examining: [snmpd]  <=
/span>rwcommunity prince<o:p></o:p>

.<o:p></o:p>

trace:
read_config(): read_config.c, 779:<o:p></o:p>

read_config:
/etc/snmp/master/snmpd.conf:126 examining: [snmpd]  <=
/span>rwcommunity prince<o:p></o:p>

/etc/snmp/master/snmpd.conf:
line 126: Warning: Unknown token: rwcommunity.<o:p></o:p>

<o:p> </o:p>

**<o:p></o:p>

<o:p> </o:p>

trace:
netsnmp_config_process_memory_list(): read_config.c, 631:<o:p></o:p>=

read_config:
processing memory: rwcommunity prince<o:p></o:p>

.<o:p></o:p>

<o:p> </o:p>

trace:
netsnmp_config_process_memory_list(): read_config.c, 631:<o:p></o:p>=

read_config:
processing memory: rwcommunity prince<o:p></o:p>

: line 0:
Warning: Unknown token: rwcommunity.<o:p></o:p>

<o:p> </o:p>

<o:p> </o:p>Is there anything obvious here that I'm missin=
g?     Thanks,       Paul=
 <hr />More immediate than e-mail? <a href=3D'http://www.w=
indowslive.com/messenger/overview.html?ocid=3DTXT_TAGLM_WL_Refresh_instanta=
ccess_042008' target=3D'_new'>Get instant access with Windows Live Messenge=
r.</a></body>
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Thomas Anders

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Apr 13, 2008, 11:54:40 PM4/13/08

to

Paul Cerqua wrote:
> read_config: /etc/snmp/master/snmpd.conf:126 examining: rwcommunity prince
>
> /etc/snmp/master/snmpd.conf: line 126: Warning: Unknown token: rwcommunity.

What's the output of:

- net-snmp-config --configure-options
- net-snmp-config --snmpd-module-list | tr " " "\n"
- /path/to/snmpd -H 2>&1 | grep community

+Thomas

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Paul Cerqua

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Apr 14, 2008, 9:44:28 AM4/14/08

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Thanks for the reply, Thomas.

Here's the info you requested:

net-snmp-config --configure-options

'--build=3Di686-redhat-linux-gnu' '--host=3Di686-redhat-linux-gnu' '--targe=
t=3Di386-redhat-linux-gnu' '--program-prefix=3D' '--prefix=3D/usr' '--exec-=
prefix=3D/usr' '--bindir=3D/usr/bin' '--sbindir=3D/usr/sbin' '--datadir=3D/=
usr/share' '--includedir=3D/usr/include/net-snmp' '--libdir=3D/usr/lib' '--=
libexecdir=3D/usr/libexec' '--localstatedir=3D/var' '--sharedstatedir=3D/us=
r/com' '--mandir=3D/usr/share/man' '--infodir=3D/usr/share/info' '--enable-=
static' '--enable-shared' '--with-cflags=3D-O2 -g -pipe -Wall -Wp,-D_FORTIF=
Y_SOURCE=3D2 -fexceptions -fstack-protector --param=3Dssp-buffer-size=3D4 -=
m32 -march=3Di386 -mtune=3Dgeneric -fasynchronous-unwind-tables -lcrypto' '=
--with-ldflags=3D' '--with-sys-location=3DUnknown' '--with-logfile=3D/var/l=
og/snmpd.log' '--with-persistent-directory=3D/var/net-snmp' '--with-mib-mod=
ules=3Dhost agentx smux ucd-snmp/lmSensors ucd-snmp/diskio disman/event-=
mib tcp-mib udp-mib mibII/mta_sendmail' '--with-libwrap=3D/usr/lib' '--sysc=
onfdir=3D/etc' '--enable-ipv6' '--enable-ucd-snmp-compatibility' '--with-op=
enssl' '--with-pic' '--enable-embedded-perl' '--enable-mfd-rewrites' '--ena=
ble-local-smux' '--with-sys-contact=3Droot@localhost' 'CFLAGS=3D-O2 -g -pip=
e -Wall -Wp,-D_FORTIFY_SOURCE=3D2 -fexceptions -fstack-protector --param=3D=
ssp-buffer-size=3D4 -m32 -march=3Di386 -mtune=3Dgeneric -fasynchronous-unwi=
nd-tables' 'build_alias=3Di686-redhat-linux-gnu' 'host_alias=3Di686-redhat-=
linux-gnu' 'target_alias=3Di386-redhat-linux-gnu'

net-snmp-config --snmpd-module-list | tr " " "\n"

ucd-snmp/lmSensors
ucd-snmp/diskio
mibII/mta_sendmail
mibII/ipv6
mibII/system_mib
mibII/sysORTable
mibII/at
mibII/ip
mibII/snmp_mib
mibII/tcp
mibII/icmp
mibII/udp
mibII/vacm_vars
mibII/setSerialNo
ucd-snmp/memory
ucd-snmp/vmstat
ucd-snmp/proc
ucd-snmp/versioninfo
ucd-snmp/pass
ucd-snmp/pass_persist
ucd-snmp/disk
ucd-snmp/loadave
ucd-snmp/extensible
agent/extend
ucd-snmp/errormib
ucd-snmp/file
ucd-snmp/dlmod
ucd-snmp/proxy
ucd-snmp/logmatch
snmpv3/snmpEngine
snmpv3/snmpMPDStats
snmpv3/usmStats
snmpv3/usmConf
snmpv3/usmUser
notification/snmpNotifyTable
notification/snmpNotifyFilterProfileTable
notification-log-mib/notification_log
target/snmpTargetAddrEntry
target/snmpTargetParamsEntry
target/target
target/target_counters
agent/nsTransactionTable
agent/nsModuleTable
agent/nsDebug
agent/nsCache
agent/nsLogging
agentx/master
agentx/subagent
disman/schedule/schedCore
disman/schedule/schedConf
disman/schedule/schedTable
utilities/override
utilities/execute
utilities/iquery
host/hr_system
host/hr_storage
host/hr_device
host/hr_other
host/hr_proc
host/hr_network
host/hr_print
host/hr_disk
host/hr_partition
host/hr_filesys
host/hr_swrun
host/hr_swinst
smux/smux
util_funcs
mibII/var_route
mibII/route_write
mibII/kernel_linux
mibII/ipAddr
mibII/tcpTable
mibII/udpTable
mibII/vacm_context
mibII/vacm_conf
ip-mib/ip_scalars
header_complex
snmp-notification-mib/snmpNotifyFilterTable/snmpNotifyFilterTable
agentx/protocol
agentx/client
agentx/master_admin
agentx/agentx_config
disman/event/mteScalars
disman/event/mteTrigger
disman/event/mteTriggerTable
disman/event/mteTriggerDeltaTable
disman/event/mteTriggerExistenceTable
disman/event/mteTriggerBooleanTable
disman/event/mteTriggerThresholdTable
disman/event/mteTriggerConf
disman/event/mteEvent
disman/event/mteEventTable
disman/event/mteEventSetTable
disman/event/mteEventNotificationTable
disman/event/mteEventConf
disman/event/mteObjects
disman/event/mteObjectsTable
disman/event/mteObjectsConf
tcp-mib/tcpConnectionTable/tcpConnectionTable
tcp-mib/tcpListenerTable/tcpListenerTable
udp-mib/udpEndpointTable/udpEndpointTable
if-mib/ifTable/ifTable
ip-mib/ipAddressTable/ipAddressTable
ip-mib/inetNetToMediaTable/inetNetToMediaTable
ip-mib/inetNetToMediaTable/inetNetToMediaTable_interface
ip-mib/inetNetToMediaTable/inetNetToMediaTable_data_access
ip-mib/ipSystemStatsTable/ipSystemStatsTable
ip-mib/ipSystemStatsTable/ipSystemStatsTable_interface
ip-mib/ipSystemStatsTable/ipSystemStatsTable_data_access
if-mib/ifXTable/ifXTable
ip-forward-mib/ipCidrRouteTable/ipCidrRouteTable
ip-forward-mib/inetCidrRouteTable/inetCidrRouteTable
hardware/memory/memory_linux
hardware/memory/hw_mem
hardware/cpu/cpu_linux
hardware/cpu/cpu
snmp-notification-mib/snmpNotifyFilterTable/snmpNotifyFilterTable_interface
snmp-notification-mib/snmpNotifyFilterTable/snmpNotifyFilterTable_data_acce=
ss
tcp-mib/data_access/tcpConn_common
tcp-mib/data_access/tcpConn_linux
tcp-mib/tcpConnectionTable/tcpConnectionTable_interface
tcp-mib/tcpConnectionTable/tcpConnectionTable_data_access
tcp-mib/tcpListenerTable/tcpListenerTable_interface
tcp-mib/tcpListenerTable/tcpListenerTable_data_access
udp-mib/udpEndpointTable/udpEndpointTable_interface
udp-mib/udpEndpointTable/udpEndpointTable_data_access
if-mib/data_access/interface
if-mib/ifTable/ifTable_interface
if-mib/ifTable/ifTable_data_access
ip-mib/ipAddressTable/ipAddressTable_interface
ip-mib/ipAddressTable/ipAddressTable_data_access
ip-mib/data_access/arp_common
ip-mib/data_access/arp_linux
ip-mib/data_access/systemstats_common
ip-mib/data_access/systemstats_linux
ip-mib/data_access/scalars_linux
if-mib/ifXTable/ifXTable_interface
if-mib/ifXTable/ifXTable_data_access
ip-forward-mib/ipCidrRouteTable/ipCidrRouteTable_interface
ip-forward-mib/ipCidrRouteTable/ipCidrRouteTable_data_access
ip-forward-mib/inetCidrRouteTable/inetCidrRouteTable_interface
ip-forward-mib/inetCidrRouteTable/inetCidrRouteTable_data_access
udp-mib/data_access/udp_endpoint_common
udp-mib/data_access/udp_endpoint_linux
if-mib/data_access/interface_linux
if-mib/data_access/interface_ioctl
ip-mib/data_access/ipaddress_common
ip-mib/data_access/ipaddress_linux
ip-forward-mib/data_access/route_common
ip-forward-mib/data_access/route_linux
ip-forward-mib/data_access/route_ioctl
ip-mib/data_access/ipaddress_ioctl

/path/to/snmpd -H 2>&1 | grep community

trapsink host [community] [port]
trap2sink host [community] [port]
informsink host [community] [port]
trapcommunity community-string
com2sec [-Cn CONTEXT] secName IPv4-network-address[/ne=
tmask] community
com2sec6 [-Cn CONTEXT] secName IPv6-network-address[/ne=
tmask] community
com2secunix [-Cn CONTEXT] secName sockpath community
authcommunity authtype1,authtype2 community [default|hostnam=
e|network/bits [oid|-V view]]
rwcommunity community [default|hostname|network/bits [oid]=
]
rocommunity community [default|hostname|network/bits [oid]=
]
rwcommunity6 community [default|hostname|network/bits [oid]=
]
rocommunity6 community [default|hostname|network/bits [oid]=
]

> Date: Mon, 14 Apr 2008 05:57:41 +0200
> From: thomas...@blue-cable.de
> To: paulc...@hotmail.com
> Subject: Re: rwcommunity in snmpd.conf ignored by snmpd ("unknown token" =
in debug output)
> CC: net-snm...@lists.sourceforge.net
>=20
> Paul Cerqua wrote:
> > read_config: /etc/snmp/master/snmpd.conf:126 examining: rwcommunity pri=
nce
> >=20
> > /etc/snmp/master/snmpd.conf: line 126: Warning: Unknown token: rwcommun=
ity.
>=20

> What's the output of:

>=20

> - net-snmp-config --configure-options
> - net-snmp-config --snmpd-module-list | tr " " "\n"
> - /path/to/snmpd -H 2>&1 | grep community

>=20
>=20
> +Thomas
>=20
> -------------------------------------------------------------------------
> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference=20
> Don't miss this year's exciting event. There's still time to save $100.=20
> Use priority code J8TL2D2.=20
> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/ja=

vaone
> _______________________________________________
> Net-snmp-users mailing list
> Net-snm...@lists.sourceforge.net
> Please see the following page to unsubscribe or change other options:
> https://lists.sourceforge.net/lists/listinfo/net-snmp-users

>=20

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Thanks for the reply, Thomas. Here's the info you requested: =
 net-snmp-config --configure-options '--build=3Di686-redhat-linux=
-gnu' '--host=3Di686-redhat-linux-gnu' '--target=3Di386-redhat-linux-gnu' '=
--program-prefix=3D' '--prefix=3D/usr' '--exec-prefix=3D/usr' '--bindir=3D/=
usr/bin' '--sbindir=3D/usr/sbin' '--datadir=3D/usr/share' '--includedir=3D/=
usr/include/net-snmp' '--libdir=3D/usr/lib' '--libexecdir=3D/usr/libexec' '=
--localstatedir=3D/var' '--sharedstatedir=3D/usr/com' '--mandir=3D/usr/shar=
e/man' '--infodir=3D/usr/share/info' '--enable-static' '--enable-shared' '-=
-with-cflags=3D-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=3D2 -fexceptions -f=
stack-protector --param=3Dssp-buffer-size=3D4 -m32 -march=3Di386 -mtune=3Dg=
eneric -fasynchronous-unwind-tables -lcrypto' '--with-ldflags=3D' '--with-s=
ys-location=3DUnknown' '--with-logfile=3D/var/log/snmpd.log' '--with-persis=
tent-directory=3D/var/net-snmp' '--with-mib-modules=3Dhost agentx smux ucd-=
snmp/lmSensors    ucd-snmp/diskio disman/event-mib tcp-mib u=
dp-mib mibII/mta_sendmail' '--with-libwrap=3D/usr/lib' '--sysconfdir=3D/etc=
' '--enable-ipv6' '--enable-ucd-snmp-compatibility' '--with-openssl' '--wit=
h-pic' '--enable-embedded-perl' '--enable-mfd-rewrites' '--enable-local-smu=
x' '--with-sys-contact=3Droot@localhost' 'CFLAGS=3D-O2 -g -pipe -Wall -Wp,-=
D_FORTIFY_SOURCE=3D2 -fexceptions -fstack-protector --param=3Dssp-buffer-si=
ze=3D4 -m32 -march=3Di386 -mtune=3Dgeneric -fasynchronous-unwind-tables' 'b=
uild_alias=3Di686-redhat-linux-gnu' 'host_alias=3Di686-redhat-linux-gnu' 't=
arget_alias=3Di386-redhat-linux-gnu' net-snmp-config --snmpd=
-module-list | tr " " "\n" ucd-snmp/lmSensors ucd-snmp/diskio =
mibII/mta_sendmail mibII/ipv6 mibII/system_mib mibII/sysORTable<br=
>mibII/at mibII/ip mibII/snmp_mib mibII/tcp mibII/icmp mibII=
/udp mibII/vacm_vars mibII/setSerialNo ucd-snmp/memory ucd-snmp=
/vmstat ucd-snmp/proc ucd-snmp/versioninfo ucd-snmp/pass ucd-sn=
mp/pass_persist ucd-snmp/disk ucd-snmp/loadave ucd-snmp/extensible=
 agent/extend ucd-snmp/errormib ucd-snmp/file ucd-snmp/dlmod<br=
>ucd-snmp/proxy ucd-snmp/logmatch snmpv3/snmpEngine snmpv3/snmpMPD=
Stats snmpv3/usmStats snmpv3/usmConf snmpv3/usmUser notificatio=
n/snmpNotifyTable notification/snmpNotifyFilterProfileTable notificat=
ion-log-mib/notification_log target/snmpTargetAddrEntry target/snmpTa=
rgetParamsEntry target/target target/target_counters agent/nsTrans=
actionTable agent/nsModuleTable agent/nsDebug agent/nsCache age=
nt/nsLogging agentx/master agentx/subagent disman/schedule/schedCo=
re disman/schedule/schedConf disman/schedule/schedTable utilities/=
override utilities/execute utilities/iquery host/hr_system host=
/hr_storage host/hr_device host/hr_other host/hr_proc host/hr_n=
etwork host/hr_print host/hr_disk host/hr_partition host/hr_fil=
esys host/hr_swrun host/hr_swinst smux/smux util_funcs mibII=
/var_route mibII/route_write mibII/kernel_linux mibII/ipAddr mi=
bII/tcpTable mibII/udpTable mibII/vacm_context mibII/vacm_conf =
ip-mib/ip_scalars header_complex snmp-notification-mib/snmpNotifyFilt=
erTable/snmpNotifyFilterTable agentx/protocol agentx/client agentx=
/master_admin agentx/agentx_config disman/event/mteScalars disman/=
event/mteTrigger disman/event/mteTriggerTable disman/event/mteTrigger=
DeltaTable disman/event/mteTriggerExistenceTable disman/event/mteTrig=
gerBooleanTable disman/event/mteTriggerThresholdTable disman/event/mt=
eTriggerConf disman/event/mteEvent disman/event/mteEventTable dism=
an/event/mteEventSetTable disman/event/mteEventNotificationTable dism=
an/event/mteEventConf disman/event/mteObjects disman/event/mteObjects=
Table disman/event/mteObjectsConf tcp-mib/tcpConnectionTable/tcpConne=
ctionTable tcp-mib/tcpListenerTable/tcpListenerTable udp-mib/udpEndpo=
intTable/udpEndpointTable if-mib/ifTable/ifTable ip-mib/ipAddressTabl=
e/ipAddressTable ip-mib/inetNetToMediaTable/inetNetToMediaTable ip-mi=
b/inetNetToMediaTable/inetNetToMediaTable_interface ip-mib/inetNetToMedi=
aTable/inetNetToMediaTable_data_access ip-mib/ipSystemStatsTable/ipSyste=
mStatsTable ip-mib/ipSystemStatsTable/ipSystemStatsTable_interface ip=
-mib/ipSystemStatsTable/ipSystemStatsTable_data_access if-mib/ifXTable/i=
fXTable ip-forward-mib/ipCidrRouteTable/ipCidrRouteTable ip-forward-m=
ib/inetCidrRouteTable/inetCidrRouteTable hardware/memory/memory_linux<br=
>hardware/memory/hw_mem hardware/cpu/cpu_linux hardware/cpu/cpu sn=
mp-notification-mib/snmpNotifyFilterTable/snmpNotifyFilterTable_interface<b=
r>snmp-notification-mib/snmpNotifyFilterTable/snmpNotifyFilterTable_data_ac=
cess tcp-mib/data_access/tcpConn_common tcp-mib/data_access/tcpConn_l=
inux tcp-mib/tcpConnectionTable/tcpConnectionTable_interface tcp-mib/=
tcpConnectionTable/tcpConnectionTable_data_access tcp-mib/tcpListenerTab=
le/tcpListenerTable_interface tcp-mib/tcpListenerTable/tcpListenerTable_=
data_access udp-mib/udpEndpointTable/udpEndpointTable_interface udp-m=
ib/udpEndpointTable/udpEndpointTable_data_access if-mib/data_access/inte=
rface if-mib/ifTable/ifTable_interface if-mib/ifTable/ifTable_data_ac=
cess ip-mib/ipAddressTable/ipAddressTable_interface ip-mib/ipAddressT=
able/ipAddressTable_data_access ip-mib/data_access/arp_common ip-mib/=
data_access/arp_linux ip-mib/data_access/systemstats_common ip-mib/da=
ta_access/systemstats_linux ip-mib/data_access/scalars_linux if-mib/i=
fXTable/ifXTable_interface if-mib/ifXTable/ifXTable_data_access ip-fo=
rward-mib/ipCidrRouteTable/ipCidrRouteTable_interface ip-forward-mib/ipC=
idrRouteTable/ipCidrRouteTable_data_access ip-forward-mib/inetCidrRouteT=
able/inetCidrRouteTable_interface ip-forward-mib/inetCidrRouteTable/inet=
CidrRouteTable_data_access udp-mib/data_access/udp_endpoint_common ud=
p-mib/data_access/udp_endpoint_linux if-mib/data_access/interface_linux<=
br>if-mib/data_access/interface_ioctl ip-mib/data_access/ipaddress_commo=
n ip-mib/data_access/ipaddress_linux ip-forward-mib/data_access/route=
_common ip-forward-mib/data_access/route_linux ip-forward-mib/data_ac=
cess/route_ioctl ip-mib/data_access/ipaddress_ioctl /path=
/to/snmpd -H 2>&1 | grep community     trapsin=
k            &n=
bsp;    host [community] [port]     trap2s=
ink            =
    host [community] [port]     informsink=
            &nb=
sp;  host [community] [port]     trapcommunity =
           community-stri=
ng     com2sec       &=
nbsp;          [-Cn CONTEXT] s=
ecName IPv4-network-address[/netmask] community     com2s=
ec6            =
     [-Cn CONTEXT] secName IPv6-network-address[/netmas=
k] community     com2secunix    &nbsp=
;         [-Cn CONTEXT] secName soc=
kpath community     authcommunity    =
        authtype1,authtype2 community [d=
efault|hostname|network/bits [oid|-V view]]     rwcommuni=
ty            &=
nbsp; community [default|hostname|network/bits [oid]]    =
rocommunity          &nb=
sp;   community [default|hostname|network/bits [oid]]  &n=
bsp;  rwcommunity6        &nbs=
p;    community [default|hostname|network/bits [oid]] &nb=
sp;   rocommunity6       &nbsp=
;     community [default|hostname|network/bits [oid]]<b=
r> > Date: Mon, 14 Apr 2008 05:57:41 +0200 > From: thom=
as.a...@blue-cable.de > To: paulc...@hotmail.com > Subject:=
Re: rwcommunity in snmpd.conf ignored by snmpd ("unknown token" in debug o=
utput) > CC: net-snm...@lists.sourceforge.net > > Pa=
ul Cerqua wrote: > > read_config: /etc/snmp/master/snmpd.conf:126 =
examining: rwcommunity prince > > > > /etc/snmp/master/s=
nmpd.conf: line 126: Warning: Unknown token: rwcommunity. > > =
What's the output of: > > - net-snmp-config --configure-option=
s > - net-snmp-config --snmpd-module-list | tr " " "\n" > - /pa=
th/to/snmpd -H 2>&1 | grep community > > > +Thom=
as > > -------------------------------------------------------=
------------------ > This SF.net email is sponsored by the 2008 JavaO=
ne(SM) Conference > Don't miss this year's exciting event. There's s=
till time to save $100. > Use priority code J8TL2D2. > http:/=
/ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone<br=
>> _______________________________________________ > Net-snmp-user=
s mailing list > Net-snm...@lists.sourceforge.net > Please =
see the following page to unsubscribe or change other options: > http=
s://lists.sourceforge.net/lists/listinfo/net-snmp-users > <=
hr />Use video conversation to talk face-to-face with Windows Live Messenge=
r. <a href=3D'http://www.windowslive.com/messenger/connect_your_way.html?oc=
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Dave Shield

unread,

Apr 14, 2008, 10:10:21 AM4/14/08

to

On 14/04/2008, Paul Cerqua <paulc...@hotmail.com> wrote:
> The rwcommunity token is accessed twice by the snmpd master process; it

> recognizes it the first time, but not the second time ("unknown token").
> This is true whether or not I prefix rwcommunity with [snmpd]. Also, I
> tried specifying the community via --rwcommunity="prince" and had the same
> results.

This is a bit of a long-shot, but it's worth checking whether there might
be some non-printing characters in the config file, that are confusing
the config parsing code.

What does the command

sed -n 126p /etc/snmp/master/snmpd.conf | cat -vte

display?

Also, how are you starting the agent?
What's the exact command that you invoke?

Dave

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Paul Cerqua

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Apr 14, 2008, 10:33:29 AM4/14/08

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Thanks, Dave.

I thought about the unprintable characters, too; does it make sense that I =
would get similar messages (except that they reference "memory") when using=
--rwcommunity=3D"prince" on the command line?

> What does the command
>=20

> sed -n 126p /etc/snmp/master/snmpd.conf | cat -vte

>=20
> display?

rwcommunity prince$

[In the snmpd.conf file, that line looks like: rwcommunity prince <-- =
no $.]

>=20

> Also, how are you starting the agent?
> What's the exact command that you invoke?
>

Including the debug info, it looks like:

daemon /usr/sbin/snmpd -DALL -Lf /var/log/snmpdmaster.log $OPTIONS $IPADDR:=
161

where:

OPTIONS=3D"-LS 3 d -Lf /dev/null -p /var/run/snmpdmaster -a -I smux"

and:

$IPADDR is the sole IP address over which I wish to accept SNMP requests.

Hmmm.... You may have hit on something here. I'm suspicious of that "-I s=
mux"; I added that months ago and I can't remember why. I think I was tryi=
ng to make it forget about all the MIBs it knows about (since I'm servicing=
them another way).

- Paul

> Date: Mon, 14 Apr 2008 15:07:48 +0100
> From: D.T.S...@liverpool.ac.uk

> To: paulc...@hotmail.com
> Subject: Re: rwcommunity in snmpd.conf ignored by snmpd ("unknown token" =
in debug output)
> CC: net-snm...@lists.sourceforge.net
>=20

> On 14/04/2008, Paul Cerqua <paulc...@hotmail.com> wrote:
> > The rwcommunity token is accessed twice by the snmpd master process; it

> > recognizes it the first time, but not the second time ("unknown token")=

.
> > This is true whether or not I prefix rwcommunity with [snmpd]. Also, I

> > tried specifying the community via --rwcommunity=3D"prince" and had the=
same
> > results.
>=20

> This is a bit of a long-shot, but it's worth checking whether there might
> be some non-printing characters in the config file, that are confusing
> the config parsing code.

>=20
> What does the command
>=20

> sed -n 126p /etc/snmp/master/snmpd.conf | cat -vte

>=20
> display?
>=20

> Also, how are you starting the agent?
> What's the exact command that you invoke?

>=20
> Dave

_________________________________________________________________
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<body class=3D'hmmessage'>

Thanks, Dave. I thought about the unprintable characters, too; d=
oes it make sense that I would get similar messages (except that they refer=
ence "memory") when using --rwcommunity=3D"prince" on the command line? =
 > What does the command > > sed -n 126p /etc/snmp/ma=
ster/snmpd.conf | cat -vte > > display? rwcommunity&nbs=
p; prince$ [In the snmpd.conf file, that line looks like: &nbsp=
; rwcommunity  prince   <-- no $.] > &g=
t; Also, how are you starting the agent? > What's the exact command t=
hat you invoke? > Including the debug info, it looks like: =
 daemon /usr/sbin/snmpd -DALL -Lf /var/log/snmpdmaster.log $OPTIONS $IPA=
DDR:161 where: OPTIONS=3D"-LS 3 d -Lf /dev/null -p /var/run/s=
nmpdmaster -a -I smux" and: $IPADDR is the sole IP address ov=
er which I wish to accept SNMP requests. Hmmm....  You may have=
hit on something here.  I'm suspicious of that "-I smux"; I added tha=
t months ago and I can't remember why.  I think I was trying to make i=
t forget about all the MIBs it knows about (since I'm servicing them anothe=
r way).        - Paul <=
br> > Date: Mon, 14 Apr 2008 15:07:48 +0100 > From: D.T.Shi=
e...@liverpool.ac.uk > To: paulc...@hotmail.com > Subject: Re:=
rwcommunity in snmpd.conf ignored by snmpd ("unknown token" in debug outpu=
t) > CC: net-snm...@lists.sourceforge.net > > On 14/=
04/2008, Paul Cerqua <paulc...@hotmail.com> wrote: > > The=
rwcommunity token is accessed twice by the snmpd master process; it &gt=
; > recognizes it the first time, but not the second time ("unknown toke=
n"). > > This is true whether or not I prefix rwcommunity with [sn=
mpd]. Also, I > > tried specifying the community via --rwcommunit=
y=3D"prince" and had the same > > results. > > This i=
s a bit of a long-shot, but it's worth checking whether there might >=
be some non-printing characters in the config file, that are confusing =
> the config parsing code. > > What does the command &gt=
; > sed -n 126p /etc/snmp/master/snmpd.conf | cat -vte > <b=
r>> display? > > Also, how are you starting the agent? &=
gt; What's the exact command that you invoke? > > Dave <hr />Use video conversation to talk face-to-face with Windows Live Messe=
nger. <a href=3D'http://www.windowslive.com/messenger/connect_your_way.html=
?ocid=3DTXT_TAGLM_WL_Refresh_messenger_video_042008' target=3D'_new'>Get st=
arted!</a></body>
</html>=

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Dave Shield

unread,

Apr 14, 2008, 10:44:58 AM4/14/08

to

On 14/04/2008, Paul Cerqua <paulc...@hotmail.com> wrote:
> I thought about the unprintable characters, too; does it make sense that I

> would get similar messages (except that they reference "memory") when using

> --rwcommunity="prince" on the command line?

No :-(

> > What does the command

> >
> > sed -n 126p /etc/snmp/master/snmpd.conf | cat -vte
> >

> > display?
>
> rwcommunity prince$

That looks right.

> [In the snmpd.conf file, that line looks like: rwcommunity prince <--

> no $.]

Yup - that's the effect of "cat -e" - it marks the end of the line.
(So you can spot trailing whitespace)

> > Also, how are you starting the agent?
> > What's the exact command that you invoke?
> >
>
> Including the debug info, it looks like:
>
> daemon /usr/sbin/snmpd -DALL -Lf /var/log/snmpdmaster.log $OPTIONS

> $IPADDR:161
>
> where:
>
> OPTIONS="-LS 3 d -Lf /dev/null -p /var/run/snmpdmaster -a -I smux"

> Hmmm.... You may have hit on something here. I'm suspicious of that "-I

> smux";

That would probably break things, yes.
The "-I" flag says "initialise the specified modules (and no others)".

So "-I smux" means "initialise SMUX support, but nothing else",
and will therefore turn off *all* the access control settings.

(This probably isn't sensible, and we may need to review how the
"core" agent functionality is handled. But that's how it works)

I added that months ago and I can't remember why. I think I was

> trying to make it forget about all the MIBs it knows about (since I'm
> servicing them another way).

The safest approach would probably be to build a minimal agent
(plus SMUX support) - i.e. turning off the unwanted MIBs at
compile time, rather than run-time.

Dave

-------------------------------------------------------------------------
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Paul Cerqua

unread,

Apr 14, 2008, 11:09:00 AM4/14/08

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Thanks, Dave. I added "-I vacm_conf" to my command line and I now get the =
community behavior that I expect! (I removed the reference to smux; we're =
an AgentX shop now :-) )

I'll look into the minimal agent approach as well.

- Paul

> Date: Mon, 14 Apr 2008 15:44:06 +0100

> From: D.T.S...@liverpool.ac.uk
> To: paulc...@hotmail.com
> Subject: Re: rwcommunity in snmpd.conf ignored by snmpd ("unknown token" =
in debug output)
> CC: net-snm...@lists.sourceforge.net
>=20

> On 14/04/2008, Paul Cerqua <paulc...@hotmail.com> wrote:

> > I thought about the unprintable characters, too; does it make sense tha=
t I
> > would get similar messages (except that they reference "memory") when u=
sing
> > --rwcommunity=3D"prince" on the command line?
>=20
> No :-(
>=20
>=20

> > > What does the command
> > >
> > > sed -n 126p /etc/snmp/master/snmpd.conf | cat -vte
> > >
> > > display?
> >
> > rwcommunity prince$

>=20
> That looks right.
>=20
>=20
> > [In the snmpd.conf file, that line looks like: rwcommunity prince =
<--
> > no $.]
>=20

> Yup - that's the effect of "cat -e" - it marks the end of the line.
> (So you can spot trailing whitespace)

>=20
>=20
>=20

> > > Also, how are you starting the agent?
> > > What's the exact command that you invoke?
> > >
> >
> > Including the debug info, it looks like:
> >
> > daemon /usr/sbin/snmpd -DALL -Lf /var/log/snmpdmaster.log $OPTIONS
> > $IPADDR:161
> >
> > where:
> >

> > OPTIONS=3D"-LS 3 d -Lf /dev/null -p /var/run/snmpdmaster -a -I smux"
>=20
>=20
> > Hmmm.... You may have hit on something here. I'm suspicious of that "=
-I
> > smux";
>=20

> That would probably break things, yes.
> The "-I" flag says "initialise the specified modules (and no others)".

>=20

> So "-I smux" means "initialise SMUX support, but nothing else",
> and will therefore turn off *all* the access control settings.

>=20

> (This probably isn't sensible, and we may need to review how the
> "core" agent functionality is handled. But that's how it works)

>=20

> I added that months ago and I can't remember why. I think I was
> > trying to make it forget about all the MIBs it knows about (since I'm
> > servicing them another way).

>=20

> The safest approach would probably be to build a minimal agent
> (plus SMUX support) - i.e. turning off the unwanted MIBs at
> compile time, rather than run-time.

>=20
> Dave
>=20
> -------------------------------------------------------------------------

> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference=20
> Don't miss this year's exciting event. There's still time to save $100.=20
> Use priority code J8TL2D2.=20

> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/ja=

vaone
> _______________________________________________
> Net-snmp-users mailing list
> Net-snm...@lists.sourceforge.net
> Please see the following page to unsubscribe or change other options:
> https://lists.sourceforge.net/lists/listinfo/net-snmp-users

>=20

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<body class=3D'hmmessage'>

Thanks, Dave.  I added "-I vacm_conf" to my command line and I now=
get the community behavior that I expect!  (I removed the reference t=
o smux; we're an AgentX shop now  :-) ) I'll look into the mini=
mal agent approach as well.    - Paul > =
Date: Mon, 14 Apr 2008 15:44:06 +0100 > From: D.T.S...@liverpool.ac=
.uk > To: paulc...@hotmail.com > Subject: Re: rwcommunity in =
snmpd.conf ignored by snmpd ("unknown token" in debug output) > CC: n=
et-snm...@lists.sourceforge.net > > On 14/04/2008, Paul Ce=
rqua <paulc...@hotmail.com> wrote: > > I thought about the=
unprintable characters, too; does it make sense that I > > would =
get similar messages (except that they reference "memory") when using &g=
t; > --rwcommunity=3D"prince" on the command line? > > No :=
-( > > > > > What does the command > > &=
gt; > > > sed -n 126p /etc/snmp/master/snmpd.conf | cat -vte<br=
>> > > > > > display? > > > > rwcomm=
unity prince$ > > That looks right. > > >=
> [In the snmpd.conf file, that line looks like: rwcommunity prince =
<-- > > no $.] > > Yup - that's the effect of "c=
at -e" - it marks the end of the line. > (So you can spot trailing wh=
itespace) > > > > > > Also, how are you st=
arting the agent? > > > What's the exact command that you invok=
e? > > > > > > > Including the debug info, it=
looks like: > > > > daemon /usr/sbin/snmpd -DALL -Lf /va=
r/log/snmpdmaster.log $OPTIONS > > $IPADDR:161 > > &gt=
; > where: > > > > OPTIONS=3D"-LS 3 d -Lf /dev/null -p=
/var/run/snmpdmaster -a -I smux" > > > > Hmmm.... =
You may have hit on something here. I'm suspicious of that "-I > &gt=
; smux"; > > That would probably break things, yes. > Th=
e "-I" flag says "initialise the specified modules (and no others)". &g=
t; > So "-I smux" means "initialise SMUX support, but nothing else"=
, > and will therefore turn off *all* the access control settings.<br=
>> > (This probably isn't sensible, and we may need to review how=
the > "core" agent functionality is handled. But that's how it wor=
ks) > > I added that months ago and I can't remember why. I =
think I was > > trying to make it forget about all the MIBs it kno=
ws about (since I'm > > servicing them another way). > &=
gt; The safest approach would probably be to build a minimal agent > =
(plus SMUX support) - i.e. turning off the unwanted MIBs at > compile=
time, rather than run-time. > > Dave > > -------=
------------------------------------------------------------------ > =
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