Re: How to clean USM config

[Rajmohan Banavi]

If you want to delete the existing v3 user list, then you can
delete/move/rename the persistent snmpd.conf file (typically in
/var/net-snmp/ folder) which contains the hashed list of the users.

On Wed, Feb 22, 2017 at 9:03 PM, 徐 勇  wrote:

> Hi,
>
>
> I used Net-SNMP in my project, and I found that when I had added an snmpv3
> user by snmpd.conf (createUser directive), I cannot change the auth/priv
> password of the user by updating snmpd.conf, even have a restarting the
> snmpd process.
>
>
> And then I found this is caused by the usm lists. it seems a global usm
> lists is used to stored the password, and the list is not belong to snmpd.
> Even when I stop snmpd, or delete the v3 user, I can get the system usm
> record which is added by the createUser directive ( I use snmp-walk on 
> 1.3.6.1.6.3.15.1.2.2.1
> for checking this).
>
>
> I know snmpusm tool can update the usm password, but that tool need
> another RW v3 user. I'm wondering if there's a convenient method to modify
> the password of an existed v3 user, or delete/cleanup the exited usm list ?
>
>
> Thanks
>
> Yong
>
> 
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Re: net-snmp make error : cannot find -lperl

[Rajmohan Banavi]

This indicates that perl is missing on the system. Depending on the package
manager for your system, you can use yum/apt/others to install perl first
and then later try to build net-snmp.

You could also try to build without perl support but you will lose some
utilities

./configure --prefix=/tmp/local/ --with-defaults --disable-embedded-perl
 --without-perl-modules



On Tue, Jan 10, 2017 at 11:35 AM, deepak.sachan deepak.sachan <
deepak.sac...@deal.drdo.in> wrote:

>
> Hello friends
> During net-snmp installation following error message shows. I think this
> must some library linking issue.
> Need help to resolve this
>
>
> up/agentx/.libs/subagent.o mibgroup/utilities/.libs/execute.o
> mibgroup/utilities/.libs/iquery.o mibgroup/mibII/.libs/vacm_conf.o
> mibgroup/agentx/.libs/protocol.o mibgroup/agentx/.libs/client.o
> mibgroup/agentx/.libs/master_admin.o mibgroup/agentx/.libs/agentx_config.o
> -Wl,-rpath -Wl,/home/deepak/Desktop/net-snmp-5.7.3/snmplib/.libs
> ../snmplib/.libs/libnetsnmp.so -L/usr/local/lib -L/usr/lib/perl/5.18/CORE
> -lperl -ldl -lpthread -lc -lcrypt -lm  -O2 -fstack-protector -Wl,-E
> -fstack-protector   -Wl,-soname -Wl,libnetsnmpagent.so.30 -o
> .libs/libnetsnmpagent.so.30.0.3
> /usr/bin/ld: cannot find -lperl
> collect2: error: ld returned 1 exit status
> make[1]: *** [libnetsnmpagent.la] Error 1
> make[1]: Leaving directory `/home/deepak/Desktop/net-snmp-5.7.3/agent'
> make: *** [subdirs] Error 1
>
>
>
>
> Thanks
>
>
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multiple redundant redeclaration of functions

[Rajmohan Banavi]

Hi,

I am looking to build an app using the libnetsnmp library and observed that
there are multiple redundant redeclarations of functions. I have pasted
some of them which are output by the compiler.

Why are there multiple declarations for the same functions? Is there any
way to avoid these warnings (say by disabling UCD)?

Thanks,
Rajmohan

../../../net-snmp/include/net-snmp/net-snmp-includes.h:54:5: error:
"HAVE_DMALLOC_H" is not defined [-Werror=undef]
 #if HAVE_DMALLOC_H
 ^
In file included from ../../../net-snmp/include/net-snmp/output_api.h:151:0,
 from
../../../net-snmp/include/net-snmp/library/snmp_client.h:32,
 from ../../../net-snmp/include/net-snmp/varbind_api.h:102,
 from
../../../net-snmp/include/net-snmp/library/snmp_api.h:28,
 from ../../../net-snmp/include/net-snmp/types.h:421,
 from ../../../net-snmp/include/net-snmp/definitions.h:22,
 from
../../../net-snmp/include/net-snmp/net-snmp-includes.h:67,
 from test.c:52:
../../../net-snmp/include/net-snmp/library/snmp_logging.h:122:6: *error:
redundant redeclaration of ‘netsnmp_logging_restart’ *
[-Werror=redundant-decls]
 void netsnmp_logging_restart(void);
  ^
In file included from
../../../net-snmp/include/net-snmp/library/snmp_client.h:32:0,
 from ../../../net-snmp/include/net-snmp/varbind_api.h:102,
 from
../../../net-snmp/include/net-snmp/library/snmp_api.h:28,
 from ../../../net-snmp/include/net-snmp/types.h:421,
 from ../../../net-snmp/include/net-snmp/definitions.h:22,
 from
../../../net-snmp/include/net-snmp/net-snmp-includes.h:67,
 from test.c:52:
../../../net-snmp/include/net-snmp/output_api.h:54:10: *note: previous
declaration of ‘netsnmp_logging_restart’ was here*
 void netsnmp_logging_restart(void);
  ^
In file included from ../../../net-snmp/include/net-snmp/library/mib.h:37:0,
 from ../../../net-snmp/include/net-snmp/varbind_api.h:103,
 from
../../../net-snmp/include/net-snmp/library/snmp_api.h:28,
 from ../../../net-snmp/include/net-snmp/types.h:421,
 from ../../../net-snmp/include/net-snmp/definitions.h:22,
 from
../../../net-snmp/include/net-snmp/net-snmp-includes.h:67,
 from test.c:52:
../../../net-snmp/include/net-snmp/mib_api.h:48:21: *error: redundant
redeclaration of ‘snmp_set_mib_warnings’* [-Werror=redundant-decls]
 voidsnmp_set_mib_warnings(int);
 ^
In file included from
../../../net-snmp/include/net-snmp/session_api.h:309:0,
 from
../../../net-snmp/include/net-snmp/library/snmp_client.h:33,
 from ../../../net-snmp/include/net-snmp/varbind_api.h:102,
 from
../../../net-snmp/include/net-snmp/library/snmp_api.h:28,
 from ../../../net-snmp/include/net-snmp/types.h:421,
 from ../../../net-snmp/include/net-snmp/definitions.h:22,
 from
../../../net-snmp/include/net-snmp/net-snmp-includes.h:67,
 from test.c:52:
../../../net-snmp/include/net-snmp/library/ucd_compat.h:40:17: *note:
previous declaration of ‘snmp_set_mib_warnings’ was here*
 voidsnmp_set_mib_warnings(int);
 ^
In file included from ../../../net-snmp/include/net-snmp/library/mib.h:37:0,
 from ../../../net-snmp/include/net-snmp/varbind_api.h:103,
 from
../../../net-snmp/include/net-snmp/library/snmp_api.h:28,
 from ../../../net-snmp/include/net-snmp/types.h:421,
 from ../../../net-snmp/include/net-snmp/definitions.h:22,
 from
../../../net-snmp/include/net-snmp/net-snmp-includes.h:67,
 from test.c:52:
../../../net-snmp/include/net-snmp/mib_api.h:50:21: *error: redundant
redeclaration of ‘snmp_set_mib_errors’* [-Werror=redundant-decls]
 voidsnmp_set_mib_errors(int);
 ^
In file included from
../../../net-snmp/include/net-snmp/session_api.h:309:0,
 from
../../../net-snmp/include/net-snmp/library/snmp_client.h:33,
 from ../../../net-snmp/include/net-snmp/varbind_api.h:102,
 from
../../../net-snmp/include/net-snmp/library/snmp_api.h:28,
 from ../../../net-snmp/include/net-snmp/types.h:421,
 from ../../../net-snmp/include/net-snmp/definitions.h:22,
 from
../../../net-snmp/include/net-snmp/net-snmp-includes.h:67,
 from test.c:52:
../../../net-snmp/include/net-snmp/library/ucd_compat.h:42:17: *note:
previous declaration of ‘snmp_set_mib_errors’ was here*
 voidsnmp_set_mib_errors(int);
 ^
In file included from ../../../net-snmp/include/net-snmp/library/mib.h:37:0,
 from