https://kb.linuxvirtualserver.org/api.php?action=feedcontributions&feedformat=atom&user=NtavaresLVSKB - User contributions [en]2026-05-01T14:17:50ZUser contributionsMediaWiki 1.26.2https://kb.linuxvirtualserver.org/wiki?title=User_talk:Galbum&diff=5809User talk:Galbum2009-04-04T15:15:50Z<p>Ntavares: New page: Galbum, regarding [http://kb.linuxvirtualserver.org/wiki?title=Net-SNMP-LVS-Module&diff=5803&oldid=5778 this edit of yours], I can't reach you by any other way than this. I'd like to excha...</p>
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<div>Galbum, regarding [http://kb.linuxvirtualserver.org/wiki?title=Net-SNMP-LVS-Module&diff=5803&oldid=5778 this edit of yours], I can't reach you by any other way than this. I'd like to exchange some thoughts, specially if you are indeed Jacob Rief. Briefly, I can quickly setup a sourceforge.net to "save" the code in a better place. I can also provide a fixed (-fPIC) SRPM and x86_64.RPM for CentOS/RHEL 5. Please reply to nuno.tavares(at)dri.pt. Best wished, [[User:Ntavares|Ntavares]] 23:15, 4 April 2009 (CST)</div>Ntavareshttps://kb.linuxvirtualserver.org/wiki?title=Net-SNMP-LVS-Module&diff=5808Net-SNMP-LVS-Module2009-04-04T14:11:56Z<p>Ntavares: /* CREDITS */</p>
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<div>== GENERAL ==<br />
net-snmpd-lvs-module is a dynamicaly loadable shared object for SNMP to get the configuration and some statistical information from the Linux kernel with [[IPVS|IP virtual server]] support.<br />
<br />
== INSTALLATION ==<br />
Get the source for this module ([[media:Net-snmp-lvs-module-0.0.4.tar.gz|local copy]] or [http://www.loadbalancer.org/download/SNMP/net-snmp-lvs-module-0.0.4.tar.gz Alternate source location]). From http://www.linuxvirtualserver.org/software/ipvs.html download the the correct version of ipvsadm, for kernel 2.6 use ipvsadm-1.24 or later, for kernel 2.4 use ipvsadm-1.21. Extract '''ipvsadm-''version''.tar.gz''', build the library and copy the subtree '''libipvs''' into the module's working directory.<br />
<br />
Check that the Linux kernel is available under '''/usr/src/linux'''. Install net-snmp and its development headers and libraries. Invoke '''make''', this should build '''lvs.so'''. Copy LVS-MIB.txt and OC-MIB.txt to '''/usr/share/snmp/mibs/'''.<br />
<br />
Check that the new MIB is visible by invoking<br />
shell> snmptranslate -m LVS-MIB -On -IR lvsServiceEntry,<br />
this should return '''.1.3.6.1.4.1.8225.4711.18.1'''<br />
Copy '''lvs.so''' to '''/usr/lib/libnetsnmplvs.so''' and add the following line to<br />
'''/etc/snmp/snmpd.conf''':<br />
dlmod lvs /usr/lib/libnetsnmplvs.so<br />
Restart your snmpd.<br />
<br />
Try if everything works invoking:<br />
shell> snmpwalk -c public -v 2c -m LVS-MIB localhost 1.3.6.1.4.1.8225.4711<br />
LVS-MIB::lvsVersion.0 = STRING: "1.2.0"<br />
LVS-MIB::lvsNumServices.0 = INTEGER: 2<br />
LVS-MIB::lvsHashTableSize.0 = INTEGER: 4096<br />
LVS-MIB::lvsTcpTimeOut.0 = INTEGER: 900<br />
LVS-MIB::lvsTcpFinTimeOut.0 = INTEGER: 120<br />
LVS-MIB::lvsUdpTimeOut.0 = INTEGER: 300<br />
LVS-MIB::lvsDaemonState.0 = INTEGER: none(0)<br />
...<br />
<br />
In case you want to add additional snmp-values to your MIB:<br />
Set export MIBS=ALL and create skeleton with<br />
shell> mib2c -c mib2c.interate.conf lvsRealTable<br />
or<br />
shell> mib2c -c mib2c.interate.conf lvsServiceTable<br />
this should create a file '''lvsRealTable.c''' and/or '''lvsServiceTable.c'''.<br />
Use the generated code as a template for '''lvs.c''' and populate the missing parts.<br />
<br />
== Troubleshooting ==<br />
If you find an output for <tt></tt> like this:<br />
[root@machine ~]# snmpwalk -c public -v 2c -m LVS-MIB localhost 1.3.6.1.4.1.8225.4711<br />
LVS-MIB::lvs = No more variables left in this MIB View (It is past the end of the MIB tree)<br />
<br />
I found the solution to be [quite] less conservative with <tt>snmpd.conf</tt> [http://www.esn.ae.krakow.pl/~mike/Other/lvs-snmp/ here]:<br />
<br />
«''You can add following lines to snmpd.conf ('+' marks which line was added). This is an example and you should be very careful in granting access to your snmp coz potentially it can be a security issue:''»<br />
<br />
+view all included .1<br />
view systemview included .1.3.6.1.2.1.1<br />
<br />
+access notConfigGroup "" any noauth exact all none none<br />
access notConfigGroup "" any noauth exact systemview none none<br />
<br />
This was verified in CentOS 5.2.<br />
<br />
== CREDITS ==<br />
The code for this module currently is maintained by Jacob Rief. This code is based on ucd-snmpd-lvs written by Romeo Benzoni in 2002 and never modified since. As that code did not compile with the newer net-snmp headers, I decided to rewrite the complete code. The only unchanged parts from the ucd-snmpd-lvs project are LVS-MIB.txt and OC-MIB.txt.<br />
<br />
== Extrenal Links ==<br />
The official site does not exist any more, since I left that company.<br />
If somebody gives me access to the repository, I will maintain the module there, otherwise I will have to create one at Google-code.<br />
<br />
[[Category:LVS Software]]</div>Ntavares