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backport: fix: compress audit log archives on rollover [DHIS2-21620] - #25420
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The dhis-audit.log RollingFileAppender sets BEST_COMPRESSION but its
filePattern was "<file>.%i", which has no compression suffix. Log4j2
triggers archive compression solely via the filePattern suffix
(.gz/.zip); compressionLevel only selects the level when such a suffix
is present. As a result the configured compression never ran and, with
withFileIndex("nomax"), audit archives accumulated uncompressed and
unbounded -- filling the log directory (315 GB observed in production).
Add the .gz suffix so the already-configured BEST_COMPRESSION takes
effect and each midnight rollover produces a gzip-compressed archive.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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jason-p-pickering
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Oct 3, 2026
netroms
approved these changes
Oct 7, 2026
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#24188