Hi Wes
I am facing this strange problem of usm user not getting recognized
after agent boot.Here are the steps that I am following .
SNMP_PERSISTENT_FILE set to /var/net-snmp/snmpd.conf
SNMPCONFPATH set to /etc/snmp,/var/net-snmp
/var/net-snmp/snmpd.conf contains following line
createUser superuser MD5 new_passphrase
/etc/snmp/snmpd.conf vcam entry access to whole mib tree with write
access superuser
1- First I run the following command to start the agent
./snmpd -f -Le -c /var/net-snmp/snmpd.conf,/etc/snmp/snmpd.conf
Content of is /var/net-snmp/snmpd.conf after agent start
usmUser 1 3 0x80001f88802d6aa54b0247a342 0x73757065727573657200
0x73757065727573657200 NULL .1.3.6.1.6.3.10.1.1.2
0xe37d277a63d1df1369e95bb5661c1662 .1.3.6.1.6.3.10.1.2.1 "" ""
setserialno 1826529941
engineBoots 1
oldEngineID 0x80001f88802d6aa54b0247a342
2- I query the agent using following command and it is succesfully
returns sysUpTime
snmpget -v 3 -u superuser -l authNoPriv -a MD5 -A new_passphrase
47.11.221.219 sysUpTime.0
3- I stop the agent using kill <agent process ID> from another window.
Content of the /var/net-snmp/snmpd.conf after shutdown and before re
starting
usmUser 1 3 0x80001f88802d6aa54b0247a342 0x73757065727573657200
0x73757065727573657200 NULL .1.3.6.1.6.3.10.1.1.2
0xe37d277a63d1df1369e95bb5661c1662 .1.3.6.1.6.3.10.1.2.1 "" ""
setserialno 1826529941
engineBoots 1
oldEngineID 0x80001f88802d6aa54b0247a342
4- I restart the agent using same command i.e
I have printf commands in usm_read_user function to see if user is
read and it name is superuser. It dumps the output showing boht
securityname and usr name as superuser
Content of /var/net-snmp/snmpd.conf file after restart
usmUser 1 3 0x80001f88802d6aa54b0247a342 0x73757065727573657200
0x73757065727573657200 NULL .1.3.6.1.6.3.10.1.1.2
0xe37d277a63d1df1369e95bb5661c1662 .1.3.6.1.6.3.10.1.2.1 0x 0x00
setserialno 1826529942
engineBoots 1
oldEngineID 0x80001f88804db55c0c3148a342
5- Now I do the same snmpget query again and following are the result
>>snmpget -v 3 -u superuser -l authNoPriv -a MD5 -A new_passphrase
47.11.221.219 sysUpTime.0
snmpget: Unknown user name
I am not able to understand why user is not getting recognized. I am
expecting snmpd to reread already stored users correctly so that after
agent restart I need not re-create them. Can anyone please tell me what
is wrong with configuration. Do engineID playing any role in it.
Thanks in advance.
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