System Engineer Tasks

 1–15: System Installation & Configuration

  1. Install RHEL operating systems (bare metal or virtual machines)
  2. Configure system time, locale, and hostname
  3. Set up user accounts, groups, and permissions
  4. Install and configure software packages using yum or dnf
  5. Configure system services and runlevels (systemd)
  6. Set up and manage partitions and logical volumes (LVM)
  7. Mount and manage file systems (ext4, XFS, NFS, etc.)
  8. Configure swap space
  9. Set kernel parameters using sysctl
  10. Register systems with Red Hat Subscription Manager
  11. Configure network interfaces and DNS settings
  12. Set static IPs and manage using nmcli or nmtui
  13. Manage system logs with rsyslog or journalctl
  14. Configure SELinux policies and modes
  15. Install and configure graphical environments (GNOME/KDE if needed)

🔒 16–25: Security & Access Control

  1. Configure firewalls using firewalld or iptables
  2. Set up SSH key-based authentication
  3. Harden system access (disable root SSH, change default ports)
  4. Audit system with tools like aide or auditd
  5. Configure sudoers for privilege escalation
  6. Apply and automate security patches
  7. Enforce password complexity and expiration policies
  8. Use chage, passwd, and faillock for account security
  9. Integrate with identity management solutions (FreeIPA, LDAP)
  10. Perform system hardening based on CIS or Red Hat benchmarks

🛠️ 26–35: System Maintenance & Troubleshooting

  1. Monitor system performance with tools like top, vmstat, iotop
  2. Troubleshoot boot issues with grub2, dracut, or rescue mode
  3. Diagnose system crashes and kernel panics
  4. Schedule regular maintenance tasks with cron and at
  5. Analyze and rotate logs using logrotate
  6. Use Red Hat Insights for proactive issue detection
  7. Monitor disk space usage and cleanup
  8. Run and interpret sar, dstat, or iostat reports
  9. Track file changes using inotify
  10. Investigate service failures with systemctl status and logs

🤝 36–45: Networking, Storage, and Services

  1. Configure NFS and Samba shares
  2. Set up Apache or NGINX web servers
  3. Manage FTP/SFTP services
  4. Configure Postfix/Dovecot for mail services
  5. Implement local DNS caching or full DNS servers
  6. Mount and troubleshoot iSCSI and Fibre Channel storage
  7. Configure and secure SSH tunnels
  8. Set up network bonding and bridging
  9. Monitor ports and services with netstat, ss, or nmap
  10. Set up local and remote backups using rsync, tar, or Bacula

⚙️ 46–50: Automation & Virtualization

  1. Write shell scripts for task automation
  2. Use Ansible for configuration management and provisioning
  3. Configure and manage KVM/QEMU virtual machines
  4. Deploy containers using Podman or Docker (on RHEL systems)
  5. Participate in system upgrades, patching cycles, and audits

🧩 BONUS: Tools Commonly Used

  • yum, dnf, rpm – package management
  • systemctl, journalctl – service and log management
  • tcpdump, wireshark – network analysis
  • top, htop, iotop, nmon – performance monitoring
  • Ansible, Kickstart, Satellite – provisioning & automation

Comments

Post a Comment

Popular posts from this blog

Differences Between Ubuntu 24.04.2 LTS and Ubuntu 25.04

Differences Between Ubuntu 24.04.2 LTS and Ubuntu 25.04 Ubuntu 24.04.2 LTS is part of the Ubuntu 24.04 LTS series , and it will be the second point release in that LTS series. As an LTS release, Ubuntu 24.04.2 will receive long-term support for 5 years, ensuring stability, security updates, and backports of important features throughout its support lifecycle (up to 2034). Key Features of Ubuntu 24.04.2 LTS (Desktop & Server) : LTS Support : Full support for 5 years (until 2029) with extended support for 5 more years (until 2034). GNOME 44 : Modern, polished desktop environment with features like Wayland improvements, better multi-monitor support, and increased performance. Linux Kernel 6.x : Enhanced hardware support, including support for newer CPUs, GPUs, and other devices. Security Enhancements : Updates for AppArmor , SELinux , and automatic security updates to ensure the system remains secure over time. Cloud & Server Features : Improved support fo...
Read more

Latest 394 scientific research areas and projects as of March 2025, Exploring the Future of Technology and Sustainability

Latest 394 scientific research areas and projects as of March 2025,  Exploring the Future of Technology and Sustainability Quantum computing AI and machine learning advancements Renewable energy technologies CRISPR and gene editing Climate change modeling and solutions COVID-19 vaccine and treatment research Space exploration (Mars missions, Moon bases) Sustainable agriculture and food security Carbon capture and storage Neuroscience and brain-computer interfaces Mental health treatment advancements Renewable water resources Biodiversity conservation Electric vehicles Fusion energy research Antibiotic resistance solutions Nanotechnology 3D printing innovations Robotics Astrobiology Deep-sea exploration Environmental pollution reduction Personalized medicine Microbiome research Smart materials Drug development for rare diseases Aging and longevity research Artificial photosynthesis Ethical AI and autonomous systems 3D bioprinting Climate engineering P...
Read more

Unmasking Hidden Threats: A Deep Dive into a Suspicious Facebook Ads Link

Unmasking Hidden Threats: A Deep Dive into a Suspicious Facebook Ad Link Introduction Online advertisements, particularly on platforms like Facebook, are an essential part of digital marketing. However, not all ads lead to trustworthy destinations. Many malicious actors exploit online ads to direct users to malware-laden websites, phishing pages, or data-harvesting traps . In this article, we analyze a Facebook ad link that led to a Shopify-based website. Our investigation reveals potential privacy risks, obfuscated JavaScript, excessive third-party tracking, and hidden behavior that could pose security concerns for users. 1. The Facebook Ad: A Gateway to Suspicion Facebook ads are often tailored to lure users with attractive deals, limited-time offers, or viral trends. This particular ad was promoting a fashion store named Sotbella , redirecting users to a Shopify-based website. While Shopify is a reputable e-commerce platform, malicious scripts can still be embedded within cu...
Read more