tls_expiry.qwer · 1.0.0A server's certificate chain fetched from host:port and checked as browsers do: trusted by Mozilla's roots or yours, in order, covering the name, and the days until the first certificate in it expires.8 views · 6 downloadsX.509 certificates x509.qwer · 1.0.0Read X.509 certificates: subject, issuer, the names they cover, validity dates, days left and SHA-256 fingerprint, for expiry alerts.7 views · 6 downloadsPercentiles quantiles.qwer · 1.0.0Streaming percentiles kept in memory by name: p50, p95 and p99 of response times or order values with a t-digest that stays small, and the rank of any value.7 views · 8 downloadsRolling windows rolling_windows.qwer · 1.0.0Moving counts, sums, averages and rates over time windows, kept in memory by name: requests a minute, error rates, this hour against the last, and moving averages over rows.8 views · 8 downloadsTime series store time_series.qwer · 1.0.0Metrics kept in one file: points written by series and time, read back for a range, downsampled into buckets (average, max, percentiles, a counter's rate), several series lined up for a chart, old points compacted and dropped by retention.7 views · 7 downloadsDatadog datadog.qwer · 1.0.0Report to Datadog from a program: metrics through the v2 series API with names and timestamps checked, events and service checks, tags tidied as Datadog keeps them, and logs batched and gzipped within the intake's limits of 1000 entries and 5 MB.3 views · 8 downloadsOpenTelemetry otlp.qwer · 1.0.0Traces, logs and metrics sent as OTLP/HTTP JSON to a collector, Grafana, Honeycomb or Jaeger: spans with parents, attributes and status, W3C traceparent headers made and read, logs tied to their trace, and gauges and counters.7 views · 7 downloadsSentry sentry.qwer · 1.0.0Errors and messages sent to Sentry, GlitchTip or any Sentry-compatible server as envelope events from a DSN, with level, tags, user, request, release, breadcrumbs and a stack trace, without an SDK.7 views · 7 downloadsGrafana grafana.qwer · 1.0.0Save, find and remove Grafana dashboards and folders, mark deploys with annotations, run data-source queries with their frames read as rows, keep alert rules, and make service accounts and tokens, with version conflicts and a query's own failure turned into clear errors.3 views · 7 downloadsGrafana Loki loki.qwer · 1.0.0Push log lines to Loki with labels and nanosecond times kept as text, run LogQL range and instant queries with streams flattened into one sorted list and metric results as series, and read long ranges past the limit without losing or doubling a line.4 views · 7 downloadsPrometheus queries prometheus_query.qwer · 1.0.0Ask a Prometheus server from a program: instant and range queries flattened into rows, label values, scrape targets, firing alerts and rules, with a visitor's text escaped into a PromQL selector.4 views · 6 downloadsLog parser log_parse.qwer · 1.0.0Log lines into rows: nginx and Apache access logs, syslog, logfmt and JSON lines, the format found by itself, with counts by any field.7 views · 7 downloadsPrometheus metrics prometheus.qwer · 1.0.0Counters, gauges and histograms with labels kept in memory, and the /metrics text Prometheus and Grafana scrape.8 views · 8 downloadsSource maps source_maps.qwer · 1.0.0Minified JavaScript stack traces mapped back to the original files, lines, columns and function names with their source maps, and the code around each place.7 views · 8 downloadsSystem information system_info.qwer · 1.0.0The machine a program runs on: CPU usage per core measured between readings, memory and swap with cgroup limits, disks with free space and the one holding a path, network totals and rates, load per core, uptime, processes sorted and searched, and a health check that turns limits into warnings.3 views · 12 downloadsUptime checks uptime_check.qwer · 1.0.0Uptime checks for a status page: whether a host's port is open and how fast, a URL's status and response time, many at once.8 views · 8 downloadsAnomaly detection anomalies.qwer · 1.0.0Outliers and odd moments found in numbers: z-scores, the robust MAD score, IQR fences and Grubbs' test; and in series over time, spikes against a rolling window or the same hour of past days, EWMA control limits and level shifts by CUSUM.8 views · 8 downloadsPJL print jobs and status pjl.qwer · 1.0.0PDF, PostScript and PCL files printed on office printers without a driver, wrapped in PJL with copies, duplex, tray, held jobs released by PIN; and the printer asked for its status, model and page count, its codes told in words.6 views · 7 downloadsPrinter status printer_status.qwer · 1.0.0Any printer asked how it is in its own language, Zebra, PJL, TSPL, ESC/POS or Brother, or by SNMP for toner levels, with one clear answer: ready, paper out, ribbon out, head open, paused or jammed.9 views · 7 downloadsInfluxDB influx.qwer · 1.0.0InfluxDB line protocol built and read with its escaping and typed fields, points written to InfluxDB 2 or 3 with a token, precision, gzip and a buffer, and Flux, SQL or InfluxQL answers given back as rows.7 views · 9 downloadsNetFlow and IPFIX netflow.qwer · 1.0.0Flows from routers: NetFlow v5, v9 and IPFIX decoded into named fields, templates remembered per exporter and domain, data that beats its template held and read when it comes, options templates, enterprise and variable-length fields, uptimes turned into wall-clock times, sequence gaps counted, and a UDP collector on a thread drained with netflow_receive.3 views · 7 downloadsNTP time ntp.qwer · 1.0.0How far this server's clock is off: SNTP queries with offset, round trip, stratum and reference, several servers asked at once and the best kept (Kiss-o'-Death and unsynchronized ones set aside), NTP timestamps read, and a small time server on udp.listen.7 views · 9 downloadsPing ping.qwer · 1.0.0Is it up, and how far away: ICMP echo with an unprivileged datagram socket, IPv4 and IPv6, times, loss and the classic summary, a TCP-connect ping where ICMP is denied (Linux needs ping_group_range), a refused port told apart from a dead host, and many hosts at once.2 views · 6 downloadsSNMP snmp.qwer · 1.0.0An SNMP manager for v1, v2c and v3 (SHA or MD5 with AES or DES): get, walk, get-bulk, whole tables as rows and set, with MIB names for switches, printers and UPSes; traps and informs sent, and read in a udp.listen handler.8 views · 9 downloadsStatsD and Graphite statsd.qwer · 1.0.0Metrics sent to StatsD, DogStatsD or Graphite over UDP or TCP: counters, gauges, timers, histograms and sets with sample rates and tags, events and service checks, buffered into full packets, and StatsD packets read back for a program that takes them itself.6 views · 11 downloadsSyslog syslog.qwer · 1.0.1Syslog messages built and read, RFC 5424 with structured data and the older BSD format, sent to a log server over UDP, TCP or TLS, and a receiver for what devices send.7 views · 10 downloadsOther tags
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