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ci-cd

  • Wildcard certificates, and the DNS challenge

    Deep dive9 min read

    ACME v2 landed in March and wildcards need a different proof. The certificate is the easy part; the API token that can rewrite your zone is not.

  • GitLab CI stages are not jobs, and the difference matters

    Note2 min read

    Jobs in the same stage run in parallel and jobs in later stages wait for all of the previous stage, which is obvious once stated and produces surprising…

  • webpack 4 needs almost no configuration

    Deep dive10 min read

    One line replaced about eighty. The defaults are almost always right, and the cost is that they are invisible when they are not.

  • The build cache misses on a file mode change

    Note1 min read

    A build that rebuilds from scratch on CI while being fully cached locally is usually not a Docker problem — it is that the checkout produced different file…

  • nginx -t before every reload, in the deploy script

    Note2 min read

    systemctl reload nginx with a broken configuration leaves the old one running and reports success in a way that is easy to miss, right up until the next…

  • Laravel 5.6 and logging you can configure

    Deep dive10 min read

    Logging moved into a config file, and stacks are why it matters — a different format per destination, decided without touching a service provider.

  • Symfony 4 and the bundle that does not exist

    Deep dive10 min read

    A new project used to arrive with forty megabytes of vendor code and one route. The framework got smaller, and the interesting part is what happens at install…

  • Alerting that people do not learn to ignore

    Deep dive10 min read

    340 alerts in a month, four of which mattered. An alert channel nobody reads is the same as no alerting, and the cause is alerting on causes.

  • Compose file version 3, and what swarm changed

    Deep dive10 min read

    v3 exists to be deployable to a scheduler, and that removes things a single-host file relied on. What went, why it had to, and what replaces it.

  • ignoreErrors is how you adopt this on old code

    Note2 min read

    Four thousand errors on the first run is a number nobody can act on, and the usual outcome is that the tool is removed. Ignoring the existing ones…