8000 Update micro_kernel_trait.rst by amine-betari · Pull Request #12722 · symfony/symfony-docs · GitHub
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Add caution in system+semaphore
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jderusse authored and OskarStark committed Feb 5, 2020
commit b23187171027858aa4e05ed5eb9dc476c8f3437d
8 changes: 8 additions & 0 deletions components/lock.rst
Original file line number Diff line number Diff line change
Expand Up @@ -530,6 +530,14 @@ can be two running containers in parallel.
concurrent process on a new machine, check that other process are stopped
on the old one.

.. caution::

When runing on systemd with non-system user with option ``RemoveIPC=yes``
(default value), locks are deleted by systemd when that user logs out.
Check that process is ran with a system user (UID <= SYS_UID_MAX) with
``SYS_UID_MAX`` defined in ``/etc/login.defs``, or set the option
``RemoveIPC=off`` in ``/etc/systemd/logind.conf``.

Overall
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