{"id":3509,"date":"2026-09-09T17:34:42","date_gmt":"2026-09-09T17:34:42","guid":{"rendered":"https:\/\/acatechsolutions.co.uk\/blog\/server-monitoring-explained\/"},"modified":"2026-09-09T21:02:44","modified_gmt":"2026-09-09T21:02:44","slug":"server-monitoring-explained","status":"publish","type":"post","link":"https:\/\/acatechsolutions.co.uk\/blog\/server-monitoring-explained\/","title":{"rendered":"Server Monitoring Explained: What Should Be Monitored?"},"content":{"rendered":"

Server monitoring should tell you whether a business service is available, healthy, secure and likely to run out of capacity\u2014and it should send each useful alert to somebody who can act.<\/strong> Monitoring only CPU and disk space leaves large gaps around applications, certificates, backups, queues, dependencies and the customer journey.<\/p>\n

Reviewed: 9 September 2026<\/em><\/p>\n

What should server monitoring cover?<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Layer<\/th>\nExamples<\/th>\nQuestion answered<\/th>\n<\/tr>\n<\/thead>\n
Outside-in<\/td>\nDNS, TLS, HTTP, login or transaction probe<\/td>\nCan a user reach and use it?<\/td>\n<\/tr>\n
Host<\/td>\nCPU, memory, disk, processes, hardware<\/td>\nIs the machine healthy?<\/td>\n<\/tr>\n
Application<\/td>\nErrors, latency, queues, jobs, dependencies<\/td>\nIs the service working correctly?<\/td>\n<\/tr>\n
Data<\/td>\nDatabase health, replication, backup and restore<\/td>\nIs data protected and available?<\/td>\n<\/tr>\n
Security<\/td>\nSign-ins, privilege, changes, agents and exposure<\/td>\nIs suspicious activity visible?<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Start with the service, not the graph<\/h2>\n

Write down what the server enables: a website, checkout, file service, database, remote desktop environment or internal application. Identify its users, operating hours, dependencies and acceptable interruption. These answers determine what deserves an alert and how quickly somebody should respond.<\/p>\n

A green server does not prove a usable service. The operating system may respond while the application returns errors, a certificate has expired or a payment dependency is unavailable.<\/p>\n

Monitor availability from more than one viewpoint<\/h2>\n

Use host-level checks and an external probe where the service is public. An outside-in check can reveal DNS, routing, firewall, TLS and application failures that an agent on the server cannot see. For internal services, monitor from a representative network location and test authentication where it can be done safely.<\/p>\n