####> This option file is used in: ####> podman create, run ####> If file is edited, make sure the changes ####> are applicable to all of those. #### **--systemd**=*true* | *false* | *always* Run container in systemd mode. The default is **true**. - **true** enables systemd mode only when the command executed inside the container is *systemd*, */usr/sbin/init*, */sbin/init* or */usr/local/sbin/init*. - **false** disables systemd mode. - **always** enforces the systemd mode to be enabled. Running the container in systemd mode causes the following changes: * Podman mounts tmpfs file systems on the following directories * _/run_ * _/run/lock_ * _/tmp_ * _/sys/fs/cgroup/systemd_ * _/var/lib/journal_ * Podman sets the default stop signal to **SIGRTMIN+3**. * Podman sets **container_uuid** environment variable in the container to the first 32 characters of the container ID. * Podman will not mount virtual consoles (_/dev/tty\d+_) when running with **--privileged**. This allows systemd to run in a confined container without any modifications. Note that on **SELinux** systems, systemd attempts to write to the cgroup file system. Containers writing to the cgroup file system are denied by default. The **container_manage_cgroup** boolean must be enabled for this to be allowed on an SELinux separated system. ``` setsebool -P container_manage_cgroup true ```