Found 42 results for: Code Completion
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 measure request latency, CPU steal and disk trends on your own server with Nginx timing logs, Prometheus 2.28 and Grafana 8, without a third-party APM.
Why a Prometheus stack stalls under load, and how to fix it: federation, a lean node_exporter, recording rules, WAL-friendly storage and a locked-down firewall.
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.
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.
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.
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.
Why Kubernetes, Docker Swarm and Nomad clusters turn flaky on slow disks or stolen CPU, how to measure it with fio and vmstat, and what to change.
What the Schrems II ruling changed, why a region label is not compliance, and how LUKS, MariaDB encryption, TLS 1.3 and WireGuard reduce exposure in 2020.
Control planes built on etcd or Raft fail on slow disks. How to test fsync latency, pick between Kubernetes, K3s and Nomad, and prepare a K3s node.
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.
A reference for lowering a cloud bill: measure first, right-size, use Spot for interruptible work, schedule capacity, compare regions, and track egress.