parse_security_log() did f.readlines() on ASTERISK_LOG before slicing the
last 5000 lines - that reads the ENTIRE file into memory first. That log
is Asterisk's unrotated console/security output, and this tab polls it
every 30 seconds from the browser. Confirmed live: on a 1GB-RAM droplet
with a 1.4GB log file, this ballooned the dashboard (explicitly meant to
be a lightweight stdlib-only process) to 677MB RSS / 1.8GB peak swap,
which left CrowdSec unable to even start (boot timeout) and directly
contributed to the droplet becoming unresponsive.
Fixed by reading only a bounded ~2MB tail from the end of the file
(seek + fixed-size read) instead of the whole thing - memory use is now
constant regardless of how large the log grows. Tested against a 180MB
synthetic log: memory delta dropped from being proportional to file size
to ~7MB, in 0.05s.
Also added log rotation (services/asterisk-digital-ocean.sh) for that same
file, which had no rotation at all and reached 1.4GB in about 3 days -
copytruncate avoids needing to signal the containerized Asterisk process
to reopen its log handle.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ho9mZgAkVpdz7S5wJkg8Nf
Claude
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