Nagios Core /ˈnɑːɡiːoʊs/, yav tas los hu ua Nagios, yog daim ntawv thov dawb thiab qhib lub khoos phis tawj software uas saib xyuas cov tshuab, tes hauj lwm thiab cov txheej txheem. Nagios muaj kev saib xyuas thiab ceeb toom cov kev pabcuam rau cov servers, keyboards, kev siv thiab kev pabcuam. Nws ceeb toom cov neeg siv thaum muaj tej yam mus tsis ncaj ncees lawm thiab ceeb toom lawv zaum ob thaum qhov teeb meem tau daws lawm.