Peter - System Administrator

Hello, I'm Peter Mawanda

Senior System Administrator

Keeping PureHosts infrastructure rock-solid with 99.99% uptime. I manage the core Linux fleet, security hardening, and ensure every server runs like a clockwork.

Rocky Linux 9 Nginx / Apache Fail2ban Docker MySQL Tuning Bash Automation

πŸ”§ Infrastructure I Manage

Our stack runs on dedicated Contabo VPS nodes with 8GB RAM, 4 vCores, and NVMe storage. I'm responsible for the entire lifecycle β€” from OS provisioning to kernel updates, real-time log analysis, and proactive security patching.

Using Ansible for automation and Prometheus + Grafana for system monitoring, I guarantee fast incident response and zero-downtime deployments across all PureHosts client environments.

Data center server racks

βš™οΈ Technical Arsenal

Tools & platforms I master to deliver enterprise-grade hosting

🐧

Linux Hardening

Rocky Linux, SSH key-only access, kernel tuning, SELinux & custom firewall rules.

🌐

Web Stack

Apache, Nginx, PHP-FPM, Varnish cache, and SSL/TLS configuration (Let's Encrypt).

πŸ“Š

Monitoring

Prometheus, Grafana, Netdata, and custom bash scripts for proactive alerts.

πŸ›‘οΈ

Security

Fail2ban, ModSecurity, Crowdsec, port hardening & regular vulnerability audits.

πŸ“‹ Core Responsibilities @ PureHosts

πŸ–₯️ VPS & Cluster Admin

Managing the entire fleet of Rocky Linux 9 servers, resource optimization, and scaling. Daily maintenance of 8GB/4vCore instances and load balancing.

πŸ”’ Security Hardening

Implementing zero-trust SSH, automating security patches, configuring firewalld zones, and DDoS mitigation strategies for all hosting accounts.

🌐 Web Server & DNS

Deploying virtual hosts, reverse proxy configs (Nginx), managing DNS zones, and ensuring 99.99% uptime for all client websites.

πŸ“‘ Backup & Disaster Recovery

Automated offsite backups (Borg/Rsync), restoration drills, and maintaining business continuity plans for PureHosts critical data.