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Use setpriv instead of gosu for dropping privileges in the entrypoint #435

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Peter-Sh
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@Peter-Sh Peter-Sh commented Mar 17, 2025

This kinda closes
#390
#401
#424
for Redis 8 CE.

Changes:

setpriv is used instead of gosu with the following flags:

  • Set reuid and regid to redis user and group
  • Clear all supplementary groups
  • Set bounding capabilities to an empty list
  • Enable no-new-privs bit

Other changes:

  • redis-sentinel is now also run with dropped privileges (previously, it wasn't)
  • Both redis-sentinel and redis-server will start with dropped privileges, regardless of how they were started (whether using absolute paths or just file names)

@Peter-Sh Peter-Sh force-pushed the RED-131427_setpriv_insteadof_gosu branch 3 times, most recently from f4f7bdf to 9d21650 Compare March 21, 2025 12:06
Changes:

setpriv is used instead of gosu with the following flags:

* Set reuid and regid to redis user and group
* Clear all supplementary groups
* Set bouding capabilities to an empty list
* Enable no-new-privs bit
* Set securebit to exclude regaining capabilities

redis-sentinel is now also run with dropped privileges (previously, it wasn't)

Both redis-sentinel and redis-server will start with dropped privileges, regardless of how they were started (whether using absolute paths or just file names)
redis-server may use sys_resource to increase open files limit if
maxclients option has been requested
@Peter-Sh Peter-Sh force-pushed the RED-131427_setpriv_insteadof_gosu branch from 9d21650 to f7606b5 Compare March 21, 2025 12:23
@adobrzhansky adobrzhansky merged commit 3b9471e into redis:release/8.0 Mar 21, 2025
16 checks passed
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2 participants