Librenms is my tool-of-choice for grabbing metrics from switches, servers, wireless access points, and anything else with an snmp interface. In this post: FreeBSD 14.0 LibrenMS 23.11.0,1 – updated to 23.11.0_1,1 within this post net-snmp-5.9.1_4,1 After updating some hosts to FreeBSD 14, the zfs application/extension broke. It was quickly amended after a report was lodged. […]
Debugging snmp output when using LibreNMS Read More »
I recently acquired an Eaton EMA114-10 PDU. When adding it to LibreNMS, I did not know what Authorization Algorithm or Crypto Algorithm to use when configuring it for SNMPv3. Searching did not find anything. IRC did. dagb on the LibreNMS IRC channel knew what was used for older EATON devices. Turns out, that hasn’t changed.
Eaton ePDU Auth Algorithm & Crypto Algorithm for SNMPv3 Configuration Read More »
This work was done in August. Since then, I have replaced the APC with an Eaton 5PX, and I am much happier. This might make for interesting reading, but that depends on how bored you are.. Following on from my failed calibration attempts, I thought I would try it again this morning before work. In
Recalibrating an APC UPS Read More »
When upgrading to LibreNMS 1.53.1, your website will not load. You’ll see a message saying check the logs. There will be nothing useful in the logs. I checked. Nothing. This is how I fixed the loading issue. In this post: FreeBSD 12.0 LibreNMS 1.51 running in a jail Upgrading to 1.53.1 First attempts Running as
upgrading to LibreNMS 1.53.1 Read More »
This post might help me in configuring net-snmp to deliver Nginx statistics to LibreNMS. As such, this post may not be as helpful to you as the official documentation. Key is this URL: http://127.0.0.1/nginx-status The nginx.conf file needs something like this: NOTE: the fastcgi_pass line might also be fastcgi_pass 10.80.0.92:9000 depending on what you find
Configuring LibreNMS Nginx statistics Read More »
I wasted a few hours today trying to figure out why special characters in passwords were causing problems. I was chasing the wrong problem. Conclusion: smart quotes are dumb. Full disclosure: I should have seen the problem. The problem is not with LibreNMS. Here is my procedure for creating an snmp read-only user, as provided
Smart quotes are not so smart: net-snmp-config –create-snmpv3-user for LibreNMS Read More »