← из прошлого урока
You dissected the process: lsof shows open files, strace shows
syscalls. Next is a neighboring infra pain: "the disk is full." df/du,
the classic trick with a deleted-but-open file, and why du shows
less than df.
Средний
12 мин · урок входит в курс «Средний»
No space left on device is one of the most common errors in
production. When the disk fills up, you need to answer two questions
fast: how much space there is in total, and who is using it. Here are
three tools for those questions: df, du, plus a couple of tricks
for the hard cases. It helps to keep fhs in mind: where junk
usually piles up (/var/log, /var/cache, /tmp).
Чтобы запустить sandbox и пройти этот урок целиком, нужен соответствующий курс. Внутри - ещё много практических уроков того же уровня и сквозной прогресс.
дальше →
The disk is under control. We go back to the network, but now at the TLS level: we start a self-signed server with openssl s_server and catch the handshake with our own eyes in a pcap. This is the final chapter before the polish lessons.