Fix MediaWiki DBQueryError: auto-initialize database via init container

[Copilot]

The chart mounts LocalSettings.php via ConfigMap, bypassing the installation wizard — but never initialized the database schema, causing Wikimedia\Rdbms\DBQueryError on every first access.

Changes

deployment.yaml — new init-db init container

Runs after wait-for-db, before the MediaWiki container starts:

• Idempotent check: queries information_schema.tables to detect any existing tables (not tied to a specific table name)
• Auto-init: if the database is empty, runs install.php with credentials from Secrets and config from env vars
• No LocalSettings.php conflict: uses --confpath=/tmp so the generated file doesn't collide with the ConfigMap-mounted one
• NetworkPolicy compatible: pod carries component: mediawiki label — existing policies already permit egress to MariaDB port 3306

- name: init-db
  image: "mediawiki:1.45"
  command:
    - sh
    - -c
    - |
      # check if any tables exist; skip if already initialized
      if php /tmp/check_db.php; then exit 0; fi
      php /var/www/html/maintenance/install.php \
        --dbserver="${DB_HOST}:${DB_PORT}" --dbpass="${MARIADB_PASSWORD}" \
        --pass="${MW_ADMIN_PASSWORD}" --confpath=/tmp \
        "${MW_SITE_NAME}" "${MW_ADMIN_USER}"

configmap.yaml

Removed $wgAllowSchemaUpdates = false — it was blocking update.php from running, which is required for schema migrations after MediaWiki version upgrades.

NOTES.txt / README.md

Replaced the mandatory manual install.php step with a note about automatic initialization, and added guidance to run update.php --quick after MediaWiki upgrades.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Mediawiki internal error</issue_title>
<issue_description>MediaWiki internal error.

Original exception: [4c8e7c6651515f164e539fed] 2026-03-23 17:29:24: Fatal exception of type "Wikimedia\Rdbms\DBQueryError"

Exception caught inside exception handler.

Set $wgShowExceptionDetails = true; at the bottom of LocalSettings.php to show detailed debugging information.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Mediawiki internal error #39

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[github-actions]

🏷️ Version RC publiée

Chart RC	3.6.2-rc.2
Version finale prévue	3.6.2
FileSender	3.6

Installation pour test

helm repo update ifpen
helm install filesender-rc ifpen/filesender --version 3.6.2-rc.2

Vérification

helm search repo ifpen/filesender --versions --devel

⚠️ Cette version RC sera remplacée par la version stable 3.6.2 lors du merge.