When to start systemd service after NFS mount?

When to start systemd service after NFS mount?

It will only mount these types of filesystems once the system starts the network. If this service is not started at boot time, the network-related file systems will not be mounted. In think the [Mount] section is pretty much self-explanatory so let’s skip the remaining section.

How to ensure that there is a delay before a service is started?

So for example, to wait for 1 minute after boot-up before starting your foo.service, create a foo.timer file in the same directory with the contents: It is important that the service is disabled (so it doesn’t start at boot), and the timer enabled, for all this to work (thanks to user tride for this):

What happens if I don’t put MNT-cifs.mount in requires?

If I don´t put “mnt-cifs.mount” inside the “Requires” (and in this order) it works for reboot/ startup, but the service starts anyway, if the device is not mounted. After putting it additionally inside “”Requires” the service mounts the device before starting it, if the device was not mounted.

How to wait for other service to be ready?

Ideally a service should be self sufficient and smart enough to retry and await for dependencies to be available (before a going down). Otherwise you will be more exposed to one failure propagating to other services. Also consider that a system reboot, unlike a manual start might ignore the dependencies order.

What to do if your device won’t soft restart?

If device doesn’t support soft restarts, then calls to PowerManager.reboot (PowerManager.REBOOT_USERSPACE), adb reboot userspace, and adb shell svc power reboot userspace fail. Note: If the PowerManager API requests the soft restart, the framework runs the regular reboot sequence.

What happens when systemd stops and restarts a unit?

Configures dependencies similar to Requires=, but limited to stopping and restarting of units. When systemd stops or restarts the units listed here, the action is propagated to this unit. Note that this is a one-way dependency — changes to this unit do not affect the listed units.

What happens after a soft restart on Android?

Currently, soft restart is limited to processes that started after userdata has been mounted. A soft restart is requested in the following ways: After a soft restart, credential encrypted storage remains unlocked.

Why does systemd Auto Start services on boot?

Some can argue that it’s unnecessary, but to many, anything that reduces cognitive burden is most welcome. systemd makes boot times shorter as it’s able to defer service launch to when it’s actually needed. A simple example is network file system-related services.

How are systemd services different from init services?

Unlike init services, those launched by systemd do not inherit any environment from any users in the system. In other words, information like PATH and other system variables aren’t available, and every new process is launched in an empty context.

How to auto start services on boot in CentOS 7?

User=ankush means this service will run as the user “ankush”. We could change this to “root”, but it’s highly unrecommended from a security perspective. ExecStart, as you can tell, is the actual command to run. Restart=on-abort means that the service should be restarted when it aborts.