Hi all, I am just starting with the project willing to do a custom snmp agent.
To do it my first step was to be able to build the default one and then start "playing" with other stuff but first I wanted to be sure that the default stuff was working. Let me explain what I did and then which is the problem I have I am working on an Ubuntu 20.04 64bit 1. The first thing I tried is to install the default stuff from Ubuntu, so I did an $ sudo apt install snmpd Then I edited the /etc/snmp/snmpd.conf file to open the agent at 161 , by adding agentaddress udp:161,udp6:[::1]:161 I restarted the snmpd daemon using $ sudo systemctl restart snmpd And there I have the 161 port open and I can snmpwalk from localhost and from other computers in the lan. So this approach is working I also played adding users with permissions and I walked the default mib using snmp v1, v2c and v3 perfectly. 2. Now let me show what didn't worked 2.a) I removed the snmpd file by doing $ sudo apt uninstall snmpd to have a clean system 2.b) I downloaded net-snmp-5.9.1 code 2.c) I executed $ ./configure --with-systemd (I did it also without this parameter but was worst I think) 2.d) I then did a $make && sudo make install 2.e) I think I did a $ sudo systemctl unmask snmpd ( I do not recall exactly because I did this too many times without sucess) 2.f) Typying $ snmpd --version shows NET-SNMP version: 5.9.1 Web: http://www.net-snmp.org/ Email: net-snmp-cod...@lists.sourceforge.net 2.g) Doing a $ sudo systemctl status snmpd ● snmpd.service - LSB: SNMP agents Loaded: loaded (/etc/init.d/snmpd; generated) Active: active (exited) since Wed 2021-12-22 20:26:45 -03; 35min ago Docs: man:systemd-sysv-generator(8) Process: 1496658 ExecStart=/etc/init.d/snmpd start (code=exited, status=0/SUCCESS) dic 22 20:26:45 pc-devlinux systemd[1]: Starting LSB: SNMP agents... dic 22 20:26:45 pc-devlinux systemd[1]: Started LSB: SNMP agents. With a green dot in the left. But no 161 port open 2.g) Doing a $ sudo systemctl stop snmpd or $ sudo systemctl restart snmpd do not solved the problem So here are my questions: So the thing is that I am confused. 3) Shouldn't it read it should read the file which is at /etc/snmp/snmpd.conf ? I did not touched the /var/lib/snmp/snmpd.conf which has a lot of text saying do not change this file I also tried to execute the file as /usr/local/sbin/snmpd -c /etc/snmp/snmpd.conf but without luck 4) Is there something too obvious I am missing? It's been to many hours with this and may be someone can bring some light to me Thanks in advance _______________________________________________ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
