The server is running and responding to pings, and DNS resolves correctly (dig server1 →192.168.0.2). The ss -lnt output shows SSH (port 22) is listening, but the firewall (firewall-cmd -- list-all) does not list SSH among the allowed services. Therefore, external users cannot connect because the firewall is blocking SSH.

The uptime output shows a load average of 7.75, 5.72, 5.17 on a system with only 4 processors (nproc = 4). This indicates CPU saturation since the load averages are significantly higher than the number of available CPUs. Memory and swap usage are minimal, and vmstat shows no I/O waits, so the bottleneck is CPU. Increasing CPU resources will help speed up the jobs.

The systemctl list-units --type=service command displays all loaded service units and their statuses (running, exited, failed, etc.), allowing the administrator to check the state of all services on the server.

OpenSCAP is a framework that automates security compliance checking and vulnerability management by using standardized security content (SCAP). It helps administrators enforce policies and detect vulnerabilities.

/bin contains essential built-in Linux executable files and core command-line utilities required for basic system operation and user tasks.