AdminSysGNULinux

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{{tag>Brouillon Mount Namespace}}

# Notes namespaces unshare mount bind shared

Voir :
  * https://www.baeldung.com/linux/bind-mounts
  * https://blog.stephane-robert.info/docs/admin-serveurs/linux/namespaces/
  * https://github.com/docker/for-mac/issues/3431
  * https://abdelouahabmbarki.com/linux-mount-namespaces-a-closer-look-at-isolated-file-system-views/
  * https://unix.stackexchange.com/questions/710971/how-do-you-get-the-child-pid-of-unshare-when-using-fork-for-nsenter-t-pid
  * https://www.gabriel.urdhr.fr/2022/12/03/entering-podman-namespaces/
  * https://unix.stackexchange.com/questions/710971/how-do-you-get-the-child-pid-of-unshare-when-using-fork-%20for-nsenter-t-pid
  * https://connect.ed-diamond.com/GNU-Linux-Magazine/glmf-247/a-la-decouverte-des-namespaces-mount-et-uts
  * https://superuser.com/questions/165116/mount-dev-proc-sys-in-a-chroot-environment
  * https://lwn.net/Articles/690679/
  * https://stackoverflow.com/questions/56254904/why-can-a-process-launched-with-unshare-m-affect-the-mounts-in-the-host
  * https://www.redhat.com/en/blog/mount-namespaces
  * https://people.kernel.org/brauner/mounting-into-mount-namespaces
  * https://unix.stackexchange.com/questions/594545/can-i-move-mount-to-other-mount-namespace


## Pb

### Err WARN[0001] "/" is not a shared mount, this could cause issues or missing mounts with rootless containers

~~~
$ podman pull docker.io/hadolint/hadolint
WARN[0001] "/" is not a shared mount, this could cause issues or missing mounts with rootless containers
~~~

Solution
~~~bash
sudo mount --make-shared /
~~~


FIXME