Tag: Monitoring
How to use Nagios and NRPE to monitor remote OPNSense HA secondary routers
by firestorm_v1 on Jul.19, 2024, under Linux, Networking, Software
In this article, I’ll be discussing how to use the Nagios NRPE (Nagios Remote Program Executor) service to monitor the remote secondary OPNSense firewall in a high availability configuration to overcome a VPN routing limitation where the secondary instance is not reachable. The root cause is due to the way the VPN routing is performed in OPNSense where the incoming traffic flow won’t communicate due to a routing conflict. While this issue isn’t an OPNSense specific issue (it affects pfSense and other firewalls that use HA/CARP with VPN).
(continue reading…)Generators and Open Source Part 2 – Always a better mousetrap
by firestorm_v1 on Feb.15, 2022, under Embedded devices, Hardware, Hardware Pr0n, How-To's, Miscellaneous
In Part 1, I discussed the research, physical installation, a bit of maintenance, and the overall basic operation of the Generac 22kW Guardian whole home generator. In this post, we’ll go over the monitoring of the generator and quickly outline the vendor’s supplied option as well as the Open Source option I decided on, and even up contributing to! Yes, even though I’m not a developer, I managed to contribute to an Open Source project and helped the developer out!
(continue reading…)Check on the ERCOT grid using cURL and jq
by firestorm_v1 on Feb.01, 2022, under How-To's, Miscellaneous, Quick Hacks, Software
So, if you’re a Texan, you already know who ERCOT is and you already know what’s going to happen in the next few days. If you’re not Texan, or you haven’t been eyeing the weather, it’s going to freeze. If you’re not sure what the connection to freezing weather and ERCOT, I’d recommend reading up on it here: Wikipedia This quick hack article isn’t about them per se, but something that might be helpful to keep an eye on the grid in the upcoming winter storm.
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