TL;DR / Summary: A small VPS can act as an outbound mail relay for your applications, but only if the provider allows port 25 and your DNS is correct before…
Read MoreSwap File Sizing on a Small VPS
TL;DR / Summary: Swap is not extra RAM, and sizing it with a copied internet rule usually makes a small VPS slower. Base the size on your actual RAM and…
Read MoreNSS and SSSD Caching on a VPS: Killing LDAP Lookup Stalls
getent lookups that cost 45 ms each are usually an NSS ordering problem. Configure SSSD memcache and entry timeouts to serve from cache and eliminate LDAP stalls.
Read MorePrivate npm Registry Mirror on One VPS
TL;DR / Summary: Small product teams can host a private npm-compatible registry or pull-through cache on one VPS to speed CI and keep internal packages off public scanners. Lock auth…
Read MoreGit Runners on a Budget VPS Without Sprawl
TL;DR / Summary: A single modest VPS can host self-hosted CI runners for a small team if you cap concurrency, isolate jobs, and treat the box as cattle with snapshots….
Read MoreRedis Cluster vs Sentinel on a Single VPS: The Memory and Ops Tradeoff
Redis Cluster solves a problem most single-VPS deployments do not have: more data than one machine’s RAM, or more write throughput than one core can serve. It adds a cluster…
Read Morecgroup v2 Memory High and Watermark Protection: Tuning Real Workloads on a VPS
Most guides treat cgroup memory control as one knob: set memory.max and let the OOM killer sort it out. cgroup v2 exposes four controls with different semantics, and the most…
Read MoreSetting Up Bandwidth Monitoring on a VPS Dashboard
TL;DR / Summary: Bandwidth surprises on a VPS usually come from three things: an unmonitored backup, a public endpoint being scraped, or egress billing that counts the wrong direction. Measure…
Read MoreRunning a Whitelisted Minecraft Server on a VPS
TL;DR / Summary: A whitelisted server for a handful of friends needs about two gigabytes of RAM, a backup, and a restart schedule. It does not need the biggest plan…
Read MoreRebuilding a VPS When the Distro Hits End of Life
TL;DR / Summary: When a distro reaches end of life, a VPS does not stop working—it stops receiving security updates. Plan the rebuild as a migration with a parallel install,…
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