Operating Systems
RHEL / Rocky / AlmaUbuntu LTSDebianWindows ServerFreeBSD
Provisioning
Ansible / AWXKickstart / PreseedPXE Boot / iPXECloud-Init / Ignition
Virtualization
KVM / libvirtProxmox VEXenHyper-V
Storage & Backup
ZFS / mdadmNFS / iSCSILVM / RAIDBacula / Restic / BorgOff-site Replication
Security
SSH Hardeningfirewalld / UFW / iptablesSELinux / AppArmorauditd & AIDE (FIM)PKI / Internal CAVulnerability Scanning
Monitoring & IaC
Prometheus & GrafanaZabbix / CheckmkTerraform / OpenTofuAnsible AutomationPatching SchedulesSLA-based Incident Response