Architecting High-Performance Servers, Cloud & Resilient Systems.
Halo, saya Jurmansyah (jurmansyah.net). Berpengalaman sejak 2009 sebagai Server Engineer & Cloud Architect, spesialis High-Availability Load Balancing (HAProxy/Keepalived), Database Clustering (MySQL Galera / PostgreSQL HA), Proxmox VE Virtualization, serta Master cPanel & WHM Optimization.
Dari Upstream Hingga Server
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Terminal Server Live Ops
Simulasi real console: Proxmox HA, Ceph storage, cPanel & LiteSpeed, Linux sysadmin command.
Keahlian & Spesialisasi
Database Clustering (MySQL Galera & PostgreSQL HA)
Arsitektur database multi-node dengan sinkronisasi synchronous/asynchronous tingkat lanjut: MySQL/MariaDB Galera Multi-Master Cluster, PostgreSQL High Availability (Patroni, PgBouncer, repmgr, Streaming Replication), automatic failover sub-detik, isolasi beban read/write split, serta backup berkala point-in-time recovery (PITR).
High Availability Load Balancing
Penerapan layer-4 & layer-7 load balancer menggunakan HAProxy dan Keepalived VRRP Floating IP. Menjamin distribusi beban merata dengan zero-downtime failover saat terjadi kendala hardware node.
Proxmox VE Virtualization
Multi-node HA cluster, distributed storage Ceph & ZFS RAID, containerisasi LXC ultra-cepat, live migration VM tanpa jeda, serta proteksi Proxmox Backup Server.
Master cPanel, WHM & Linux Hardening
Optimasi performa hosting skala enterprise: integrasi LiteSpeed Web Server, isolasi resource CloudLinux CageFS, fine-tuning Exim mail server, keamanan kernel Linux, custom WAF rules, dan automasi maintenance tanpa mengganggu ribuan user aktif.