JJoseph O'Shaughnessy3h ago · 11 min readDiagnosing DNS Failures with dig and tcpdump"It's always DNS" is a running joke for a reason. But "DNS is broken" covers a lot of very different problems: a name that doesn't exist, a server that's down, a firewall in the way, or a client askinjosephoshaughnessy.hashnode.dev
YYashvi Kothari10h ago · 17 min readHow to Lock Down Google Cloud in 9 Steps Using Custom IAM Roles (GSP190 Hands-On Guide)How to Build Least-Privilege Custom IAM Roles in Google Cloud (Without Breaking Production) Stop Giving Developers the "Editor" Role: A Practical Guide to Google Cloud Custom IAM Roles The Art of thyashvikothari.hashnode.dev
BBigdomainhost8h ago · 7 min readCron jobs, and the four reasons yours isn't runningDisclosure: I run Bigdomainhost, an Indian hosting company. This is adapted from a guide on our site. Cron takes a minute to understand and, sometimes, a week to debug. The idea is trivial: a table ofbigdomainhost.hashnode.dev
VVolyte19h ago · 5 min readHow to Point Your Domain to Your VPS (DNS A Record + Free SSL)You have a VPS and a domain name. To make example.com open your website, you add one small DNS record that says "this domain lives at this server's IP address". It takes about 5 minutes to set up, and2volyte.hashnode.dev
BBigdomainhost11h ago · 7 min readHow much RAM does your VPS actually need? Numbers by workloadDisclosure: I'm Parth, I run Bigdomainhost, an Indian hosting company, and the price column below is our own plan list. The RAM numbers apply to any host. Almost every VPS gets bought one size too bigbigdomainhost.hashnode.dev
Nn kk19h ago · 11 min readTroubleshoot Linux cgroup v2 Memory Limits Without GuessworkIntroduction A Linux process can be terminated for memory pressure even when the host still appears to have free RAM. This often happens in environments that use control groups to limit a service, contech-insights-linux.hashnode.dev
UUk K19h ago · 11 min readUse systemd Timers for Reliable Scheduled Tasks on LinuxIntroduction Scheduled work is a normal part of Linux administration. Systems rotate logs, refresh data, run backups, clean temporary files, and perform health checks at regular intervals. Cron remaintech-learning-sachin.hashnode.dev
AAI Developer23h ago · 20 min readPHP2Shell + Fragnesia: The Chain That Turns a PHP Bug Into Root (and Why Django Teams Should Care)On October 29, 2026, CISA added a seven-month-old Linux kernel bug to its Known Exploited Vulnerabilities (KEV) catalog with an unusual note attached. The bug is CVE-2026-46300, nicknamed Fragnesia, aaidevpro.hashnode.dev
IIPYE1d ago · 5 min readDNS over TLS and DNS over HTTPS: What They Protect, What They Do Not, and an Unbound SetupDisclosure up front: I run IPYE, a company that leases IP space. It gets one short paragraph at the end; the rest is plain networking. Classic DNS sends questions and answers in clear text over UDP an1ipye-com.hashnode.dev
AAsep Sayyad23h ago · 14 min readStop Using cat for Everything: 9 Better Ways to Read Linux FilesPractical tools to inspect, page, slice, and debug files without freezing your terminal Running cat /var/log/nginx/access.log on an active server is an unforced error that most engineers make once befasepsayyad007.hashnode.dev
