Found 13 results for: Platform Engineering
A 2009 reference for VPS users on container-based hosting: why "Cannot allocate memory" appears while free shows RAM, and how to read and fix it.
A 2009 reference for choosing between a VPS and a dedicated server. It covers how to find and fix OpenVZ memory-limit failures with user_beancounters.
Building Prometheus from source on a host with older Go and Node than the repo asks for: what the build does, what warns, and how I verified the result.
How to replace hand-run kubectl apply with a pull-based GitOps flow: Argo CD, Kustomize overlays, Sealed Secrets and a CI job that only edits an image tag.
Trivy exits 0 even with CRITICAL findings. I built it from source and made it a real CI gate, then found a secret-scan skip that a green result can hide.
How to set up a single-node edge MQTT aggregator with K3s and WireGuard, and how to fix the faulty flags, units and sysctls that edge guides often repeat.
A reference for lowering a cloud bill: measure first, right-size, use Spot for interruptible work, schedule capacity, compare regions, and track egress.
How to keep slow jobs out of the web request path with RabbitMQ, Celery 3.0 and Nginx 1.2 on Debian 7, with corrected configuration and the limits of the setup.
Put HAProxy 1.4 in front of web nodes on CentOS 6, tune the kernel and use Keepalived VRRP so the balancer itself is no single point of failure.
How to tell when an OpenVZ container is being refused resources: read user_beancounters, interpret failcnt, and shrink MySQL and Apache to fit the limits.
A 2010-era baseline for CentOS 5 and Ubuntu 10.04: key-only SSH, a default-drop iptables policy, sysctl network settings and fewer listening services.
Why services in an OpenVZ container fail with allocation errors while free memory looks fine, and how to find and raise the exhausted User Beancounter limit.
How to remove the single points of failure from a small web cluster in 2009: two HAProxy nodes sharing a VRRP address in front of two or more web nodes.