The ramblings of a computer geek
Nagvis by default will show the header at the top of any NagVis maps, which is fine for when you’re editing, but perhaps you have screens that display maps for information within a OC, NOC or SOC, on the later versions of the NagVis rather than appending the URL with: you now need to use […]
More...NagiosXI has a multitude of ways of monitoring hosts or services. Typically with a Microsoft Windows or Linux host you can monitor using SNMP, but you may also now want to check out the NCPA agent as a way to monitor from NagiosXI. Newer versions of NagiosXI also give the ability to administer, update and […]
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SNMP (Simple Network Management Protocol) is a protocol that can be used for monitoring and managing network connected devices. Personally I use it primarily for monitoring, it is a useful way to interrogate network connected devices for information about their status. For example querying to identify if a power supply has failed on a switch, […]
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NagiosXI has a REST API that can be used to add, edit and remove objects from the configuration. Full details of the configuration and use of this can be found on your installation at: http://nagiosserver.domain.com/nagiosxi/help/?xiwindow=api.php (or you can find it through the Advanced Configuration menu). Each user has an APIKey which can also be found via […]
More...We’ve started to host websites on AWS, we want to monitor using NagiosXI, but we got some odd results when first attempting to. The web application has no “index.html” page, which is one cause of the 403 forbidden error. However we were getting the same thing even when specifying the correct path. It turns out […]
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You may find you need to perform a check where the FQDN you are monitoring doesn’t correspond to the IP address and some form of virtual server (or host headers) are in use. Now normally using a command like: Should just work however in certain instances depending on the configuration of the web server you’ll […]
More...NagiosXI and other monitoring tools have ways to determine if your SSL certificates on say a web server are nearing expiry, but what if you have software that uses a certificate but that certificate is not directly poll-able over the standard HTTPS checks. The script which can be found here, is a passive check, so […]
More...We recently deployed some hardware Kemp ECS Connection Managers (which are designed to front the Dell ECS storage platform), however we were a bit dismayed to see there was no way to monitor the hardware status via GUI, SNMP or the Rest API. We had this issue raised after we had a PSU failure occur […]
More...It is helpful to monitor the RxErrors and TxErrors on ports on Extreme Networks switches to get a heads up on any issues before they begin to impact service. The Extreme Networks MIB can be downloaded from the Extreme Networks support portal to assist you in finding the relevant SNMP OIDs, the below is an […]
More...If you try to monitor a cloudflare fronted website with NagiosXI check_http you may get this: After much fiddling found that if you formulate the check string as: You’ll get a result like this, which is what we want! You need to use this: Enable SSL/TLS hostname extension support (SNI) The SNI is Server Name […]
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