Commands, services, file systems and the day-to-day work of running Linux boxes that stay up.
Set up nginx as a load balancer with real config and real output: round robin, weighted round robin, least_conn, ip_hash sticky sessions, passive health checks, SSL termination, WebSocket proxying and per-backend logging.
Continue Reading →How to read ping, traceroute and mtr output on Linux: packet loss, jitter, path MTU with ping -M do, why traceroute asterisks are often a false alarm, and a real troubleshooting workflow on Ubuntu 24.04 and RHEL 9.
Continue Reading →A bottom-up method for Linux network troubleshooting: link and ARP, routing, then a live demo of refused versus firewall-filtered connections, then DNS. Real output on Ubuntu 24.04 and RHEL 9.
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