deployment – Page 20 – Türker Yıldırım

Symfony 6 requires PHP 8 and that is the whole upgrade

Deep diveNovember 15, 20219 min read

5.4 LTS and 6.0 on the same day, and a deprecation log with four thousand lines nobody reads. The work is all in 5.4.

Compose v2 changed the container names your scripts parsed

NoteOctober 13, 20212 min read

v1 joined the project, service and index with underscores and v2 uses hyphens, which breaks every script that constructed a container name by hand. The compatibility flag –compatibility…

A GitHub Actions workflow that other repositories can call

Deep diveOctober 6, 202110 min read

Eleven repositories with the same ninety-line workflow and eleven copies drifting. A fix applied to four of them.

A migration that ran for four hours on a table nobody could lock

Deep diveSeptember 23, 202114 min read

An ALTER on forty million rows and a maintenance window nobody would approve. Online DDL is online until it is not.

The certificate that expired on a root nobody controlled

Deep diveSeptember 7, 20219 min read

30 September, and a certificate chain that was valid on every browser we tested. The API works and three integrations do not.

Image optimisation is a build step, not a plugin

Deep diveSeptember 6, 202110 min read

A 4.2 MB hero image, uploaded by somebody doing their job correctly. LCP at 6.1 seconds, and a plugin that only runs on upload.

concurrency: cancel-in-progress, and the deploy you must not cancel

NoteSeptember 2, 20212 min read

Cancelling superseded runs is right for tests and wrong for a deploy, and the same key applied to both produces a half-finished release. A deploy cancelled between the…

A postmortem without an owner is a document

NoteAugust 25, 20212 min read

The value of a postmortem is entirely in the actions, and an action without a name and a date is a wish. Reviewing the action list from the…

opcache.validate_timestamps=0 in production, and the deploy

NoteAugust 12, 20212 min read

Disabling the timestamp check removes a stat call per file per request and means the cache no longer notices that files changed. A deploy that swaps a symlink…

Escalating is not failing, and the runbook should say so

NoteAugust 6, 20212 min read

A rotation where asking for help feels like failure produces two hours of struggling on something the expert fixes in ten minutes. Putting it in writing, in every…