dreizackinfotech.com

Linux System Administrator

Services

Linux Administrator & Troubleshooting – Enterprise-Grade Service Packs

Linux Server Installation & Configuration

Set up reliable, secure servers using Ubuntu, CentOS, or RHEL — ready for production use.

Linux Server Hardening

Harden your system with SSH key authentication, firewall rules (UFW/firewalld), and strict SUDO policies to prevent unauthorized access.

Web Hosting Setup (Apache/NGINX + SSL)

Deploy WordPress, PHP apps, or CRMs with optimized Apache or NGINX, SSL, and custom domain configuration.

Automated Backup & Restore Setup

Configure scheduled, encrypted backups using Rsync/Rclone to local storage, NAS, or cloud (e.g., AWS S3) — with email reports.

Server Performance Optimization

Improve server speed and reliability by tuning system load, swap usage, journaling, cache limits, and boot times.

Web Application Troubleshooting

Fix critical issues related to NGINX/Apache errors, MySQL/MariaDB crashes, SSL certificate issues, and domain/DNS misconfigurations.

User & Access Control Management

Manage users, groups, restricted shell environments, SUDO roles, file-level permissions (ACL), and audit logs for internal security.

Centralized Log Monitoring & Alerts

Set up system logging (Logrotate, Rsyslog, JournalD) with disk, CPU, and memory error alerts — includes auto-cleanup and rotation.

File Server & Shared Storage Setup

Create secure, centralized file sharing via Samba or NFS — with group-based access, disk quotas, auto-mounts, and file permission controls.

Security & Vulnerability Audits

Perform detailed audits to identify weaknesses in server configuration, permissions, ports, and patch status — with fix recommendations.

LVM, iSCSI & RAID Storage Management

Manage storage with LVM partitioning, RAID 1/5 setup, snapshot/restore workflows, and storage resize without data loss.

NAS & Network File Sharing Setup

Set up TrueNAS or Synology-based storage over the network for SMB/NFS sharing, snapshots, versioning, and secure access.

System Updates & Maintenance

Apply OS updates, kernel patches, package upgrades, and fix dependency issues while maintaining system stability.

Remote Troubleshooting & Emergency Fixes

Quick problem resolution via AnyDesk, SSH, or remote shell for system crashes, misconfigurations, or resource issues.

Linux Virtualization with KVM/Proxmox

Set up and manage virtual machines with KVM or Proxmox VE, including networking, templates, and snapshot management.

Ready to make your Linux servers faster, more secure, and always reliable?

Let Dreizack Info Tech configure, protect, and optimize your entire Linux infrastructure today.