Linux System Administration/Linux System Engineer
* RHEL, CentOS, Oracle, AlmaLinux, RockyLinux, Ubuntu, Debian and Kali Linux
* Managing users and groups and permissions
* Network configuration
* Linux SSH and rsync
* Samba and NFS server
* Linux Firewalls
* Linux disk and LVM
* Nagios monitoring
AWS Cloud Administration
* Amazon EC2
* Amazon S3
* Cloudwatch
* Amazon RDS
Virtualization
* VMWare ESX/ESXi
* oVirt/KVM
* Proxmox virtualization
* Virtualbox- KVM/Libirt
Containers
* Kubernetes on bare metal
* Amazon Elastic Kubernetes (EKS)
* Docker and Docker swarm
* Rancher
Hosting
* Amazon Web Services (AWS)
* Linode
* Digitalocean
* Hetzner
Web servers (Nginx and Apache
* LAMP (Linux Apache MySQL and PHP)
* WordPress
CI/CD
* Jenkins
* Gitlab
CDN and Web securities
* Cloudflare management
*SSL termination
Security
* Linux hardening
* Vulnerability Assessment
* Penetration testing
* Security compliance
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