Linux System Administrator Roadmap

├── 🔹 Foundations
│ ├── 🔸 Basic Linux Concepts
│ │ ├── 📂 File System Hierarchy
│ │ ├── 🔑 Permissions and Ownership
│ │ ├── 🔄 Processes and Daemons
│ │ └── 🖥️ Basic Commands (ls, cd, cp, mv, rm, etc.)
│ ├── 🔸 Shell and Scripting
│ │ ├── 📝 Bash Scripting
│ │ ├── 🔧 Basic Automation
│ │ └── 🛠️ Common Shell Commands (grep, awk, sed)
│ ├── 🔸 Networking Fundamentals
│ │ ├── 🌐 TCP/IP Stack
│ │ ├── 🌍 DNS Configuration
│ │ ├── 🔌 Network Interfaces
│ │ └── 🛠️ Basic Network Troubleshooting (ping, traceroute, netstat)
│ └── 🔸 System Installation and Configuration
│ ├── 💿 Installation Methods (ISO, PXE)
│ ├── 🗂️ Disk Partitioning and File Systems
│ └── 🔒 Initial Configuration and Hardening
├── 🔹 System Administration
│ ├── 🔸 User and Group Management
│ │ ├── 👤 User Accounts
│ │ ├── 👥 Group Policies
│ │ └── 🔑 sudo Configuration
│ ├── 🔸 Package Management
│ │ ├── 📦 RPM and YUM (RHEL/CentOS)
│ │ ├── 📦 APT (Debian/Ubuntu)
│ │ └── 🔧 Compiling from Source
│ ├── 🔸 Process Management
│ │ ├── 🔄 Systemd and Init
│ │ ├── 👀 Monitoring and Controlling Processes
│ │ └── 🕒 Crontab and Scheduled Tasks
│ ├── 🔸 Filesystem Management
│ │ ├── 🗂️ Mounting and Unmounting File Systems
│ │ ├── 📁 NFS and Samba
│ │ └── 📊 Disk Quotas
│ └── 🔸 Security
│ ├── 🔥 Firewalls (iptables, firewalld)
│ ├── 🛡️ SELinux and AppArmor
│ ├── 🔒 SSH Configuration and Hardening
│ └── 📝 Auditing and Logging
├── 🔹 Networking and Services
│ ├── 🔸 Network Configuration
│ │ ├── 🌐 Static and Dynamic IP Addressing
│ │ ├── 🔌 Network Bonding and Bridging
│ │ └── 📶 VLANs
│ ├── 🔸 Web Services
│ │ ├── 🌐 Apache and Nginx
│ │ ├── 🔐 HTTPS and SSL/TLS
│ │ ├── ↔️ Reverse Proxies
│ │ └── 🛡️ Web Application Firewalls (WAF)
│ ├── 🔸 Database Management
│ │ ├── 💾 MySQL/MariaDB
│ │ ├── 💾 PostgreSQL
│ │ ├── 📂 NoSQL Databases (e.g., MongoDB)
│ │ └── 🔄 Backup and Restore
│ ├── 🔸 Email Services
│ │ ├── ✉️ Postfix and Sendmail
│ │ └── 🚫 Spam Filtering
│ └── 🔸 File and Print Services
│ ├── 📁 Samba
│ ├── 📁 NFS
│ └── 🖨️ CUPS
├── 🔹 Advanced Administration
│ ├── 🔸 Virtualization
│ │ ├── 💻 KVM and QEMU
│ │ ├── 📦 VirtualBox
│ │ └── 🔧 Libvirt
│ ├── 🔸 Containerization
│ │ ├── 🐳 Docker
│ │ ├── ☸️ Kubernetes
│ │ └── 🔧 Podman
│ ├── 🔸 Cloud Computing
│ │ ├── ☁️ AWS
│ │ ├── ☁️ Azure
│ │ ├── ☁️ OpenStack
│ │ └── ☁️ GCP (Google Cloud Platform)
│ ├── 🔸 Configuration Management
│ │ ├── 🤖 Ansible
│ │ ├── 🎭 Puppet
│ │ ├── 🍴 Chef
│ │ └── 🧂 SaltStack
│ └── 🔸 High Availability
│ ├── 🔗 Clustering (Pacemaker, Corosync)
│ ├── ⚖️ Load Balancing (HAProxy, Nginx)
│ └── 🔄 Backup and Disaster Recovery
├── 🔹 Monitoring and Performance
│ ├── 🔸 System Monitoring
│ │ ├── 🔧 Tools (Nagios, Zabbix, Prometheus, Grafana)
│ │ └── 📝 Log Management (ELK Stack, Graylog)
│ ├── 🔸 Performance Tuning
│ │ ├── 🧠 CPU and Memory Optimization
│ │ ├── 💾 Disk I/O Performance
│ │ └── 🌐 Network Performance
│ └── 🔸 Troubleshooting
│ ├── 📝 Log Analysis
│ ├── 🔍 Common Issues and Solutions
│ ├── 🚧 Performance Bottlenecks
│ └── 🔧 Kernel Tuning
├── 🔹 Scripting and Automation
│ ├── 🔸 Advanced Scripting
│ │ ├── 📜 Shell Scripting (Advanced)
│ │ ├── 🐍 Python Scripting
│ │ └── 🤖 Task Automation
│ └── 🔸 Infrastructure as Code (IaC)
│ ├── 🌍 Terraform
│ ├── ☁️ CloudFormation
│ └── 🔄 CI/CD Pipelines (Jenkins, GitLab CI)
└── 🔹 Security and Compliance
├── 🔸 Security Best Practices
│ ├── 🔒 System Hardening
│ └──🔄 Regular Updates and Patching
└── 🔍 Security Auditing Tools (e.g., Lynis, OpenVAS)

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