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podman/docs/source/markdown/options/sysctl.md
Jan Kaluza c12b1b32bc Rewrite the Quadlet documentation. 
This commit does the following:

- Splits the podman-systemd.unit.5.md into multiple files - one for each
  quadlet file type, podman-quadlet.7.md for general quadlet information
  and podman-quadlet-basic-usage.7.md for quadlet examples.
- Removes the original podman-systemd.unit.5.md file.
- Adds support for jinja2 templating language in the markdown_preprocess.
- Uses jinja2 in options/*.md to use the single .md file for both podman
  subcommands man-pages and quadlet man-pages. This deduplicates
  the Quadlet man-pages a lot.
- Adds new `@@option quadlet:source.md` preprocess command to import
  such .md files from options directory.

Signed-off-by: Jan Kaluza <jkaluza@redhat.com>
2025-09-02 12:49:45 +02:00

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####> This option file is used in: ####> podman podman-container.unit.5.md.in, create, pod clone, pod create, run ####> If file is edited, make sure the changes ####> are applicable to all of those. {% if is_quadlet %}

Sysctl=name=value

{% else %}

--sysctl=name=value

{% endif %}

Configure namespaced kernel parameters <<at runtime|for all containers in the pod>>.

For the IPC namespace, the following sysctls are allowed:

  • kernel.msgmax
  • kernel.msgmnb
  • kernel.msgmni
  • kernel.sem
  • kernel.shmall
  • kernel.shmmax
  • kernel.shmmni
  • kernel.shm_rmid_forced
  • Sysctls beginning with fs.mqueue.*

Note: <<if using the --ipc=host option|if the ipc namespace is not shared within the pod>>, the above sysctls are not allowed.

For the network namespace, only sysctls beginning with net.* are allowed.

Note: <<if using the --network=host option|if the network namespace is not shared within the pod>>, the above sysctls are not allowed.