https://ivanluminaria.com/en/tags/systemd/Recent content in Systemd on Ivan LuminariaHugoenTue, 04 Nov 2025 08:03:00 +0100https://ivanluminaria.com/en/posts/mysql/mysql-multi-istanza-secure-file-priv/Tue, 04 Nov 2025 08:03:00 +0100https://ivanluminaria.com/en/posts/mysql/mysql-multi-istanza-secure-file-priv/<p>The ticket said: &ldquo;We need a CSV export from the orders table in the ERP database. By 2 PM.&rdquo;</p> <p>It was 11 AM. Three hours for a SELECT with INTO OUTFILE — a five-minute job, I thought. Then I opened the VPN, connected to the server and realized five minutes were not going to cut it.</p> <p>The server was a CentOS 7 box running four MySQL instances. Four. On the same host, with four different <span class="glossary-tip" tabindex="0" data-glossary-desc="Linux init system and service manager, used to manage multiple MySQL/MariaDB instances on the same server through separate unit files." data-glossary-url="https://ivanluminaria.com/en/glossary/systemd/" data-glossary-more="Read more →">systemd</span> services, four different ports, four different Unix sockets, four different data directories. A setup someone had put together years earlier — probably to save on a second server — and that no one had touched or documented since.</p>