Server health directly impacts the performance, reliability, and availability of applications and services. Monitoring server health helps detect issues early, prevent downtime, and optimize resource utilization
Linux offers a variety of tools for monitoring server health, including built-in utilities and third-party software. Common monitoring tools include top, htop, sar, vmstat, and Nagios.
CPU monitoring is essential for identifying performance bottlenecks and optimizing resource allocation. Use tools like top, htop, and mpstat to monitor CPU usage, load averages, and process statistics.
Memory monitoring helps ensure efficient memory utilization and prevents issues like memory leaks and excessive swapping. Utilize tools like free, vmstat, and sar to monitor memory usage, including total memory, available memory, and swap usage.
Disk monitoring is crucial for maintaining disk performance and preventing data loss due to disk failures or capacity issues. Use tools like df, du, iostat, and smartctl to monitor disk space usage, disk activity, and disk health.
Network monitoring helps ensure optimal network performance and detect anomalies such as network congestion or packet loss. Use tools like ifconfig, ip, netstat, and nload to monitor network interfaces, traffic statistics, and bandwidth usage.
System logs provide valuable information for troubleshooting issues and identifying errors that may impact server health. Monitor system logs using tools like tail, grep, and journalctl to identify critical errors, warnings, and anomalies.