The hunt.

A mark from CI on the same screen you search. After vs before, equal windows. From the error: the request, then the function.

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After a deployThe tag is on the histogram. Compare: before and after for each plotted level, service or host, on equal windows around the mark. Fingerprints: first seen, still here, stopped — same clock. e1: attrs you can query, not an issue tracker.

Hunt histogram split by host with a billing v0.9 deploy mark. Compare lists before and after for three hosts on equal 30m windows: billing-1 850 to 854, billing-3 700 to 763, billing-2 525 to 546.

Searchkey:value you click, type, and paste into a postmortem. Counted facets before you click.

Toposcope search for level:error service:billing: counted facets, a host-split histogram with a deploy mark, and an event table with version, customer and flag columns

From the errorThe request, then the time each service spent, then the function. A saved search can page Slack when the count crosses a line.

A trace waterfall of one request through nginx, php-fpm, wordpress, mysql and smtp: 412ms, 8 spans. The failed wp_mail span is selected and shows the exception it recorded: its e1, the type PHPMailer Exception, the message SMTP connect() failed, and the start of the stack.

Send OpenTelemetryAn exporter in the app sends logs, traces and metrics over OTLP, by HTTP or gRPC. A collector is optional. Marks from CI.

Same hunt. We run it.

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