Аккаунт в General iT
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Ideas, experience and solutions for your project.
Before reloading, extract the public key from both the certificate and the private key, compare their SHA-256 hashes, and handle read errors separately. Tested with OpenSSL 3.0.13: a matching pair, a different pair, and a damaged file.
On October 23, Yandex Cloud announced a new location for ru-central1-a resources. Access is being rolled out in stages; virtual machines and some databases remain stopped. We examine what to verify before restoring traffic.
Practical guide: accept K1 and K2 only within a limited window, bind the signature to key_id and timestamp, verify HMAC via compare_digest, and disable the old key based on seven test results.
Training calculation for an online store owner: we find the hourly threshold, compare four scenarios, and show why average quarterly load can lead to the wrong choice.
Check a complete candidate unit with systemd-analyze verify and interpret exit codes, a misspelled directive, a missing executable, and a missing dependency, without daemon-reload or starting the service.
I explain why a green lab score can differ from field metrics, how to compare like-for-like conditions, and how to find the cause without guesswork.
On October 23, Ruby versions 4.0.9, 3.4.12, and 3.3.13 were released. We explain which applications are affected, why the GitLab package requires separate verification, and what to ask the server administrator.
On October 23, a network incident affected some Cloudflare customers in North America. The provider reported the issue was resolved. We explain who should check task queues and incomplete operations.
A practical guide for OpenSSL 3.0: distinguishing trust anchors from intermediates, reproducing errors 20, 2, and 62, reading depth, and separately verifying the DNS name.
Fixes for two critical PHP vulnerabilities were released on 21 October, and on 23 October the developers clarified an additional rare risk. We explain the fixed versions and what to ask the administrator of a 1C-Bitrix website or another PHP-based system.
Practical guide to RFC 6902: place a test before replace, reproduce fresh and stale prices, verify atomic failure and JSON type differences on CPython 3.12.
Calculation based on sample data for an online store owner: we account for commission, integration, support, and team time, find the turnover threshold, and test three scenarios.
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