init.d脚本到systemd参数问题

Question

I am trying to upgrade my init.d script called "myService" to systemd .The init.d script has 1 parameter which decides what to do, with the following switch case:

case "$choice" in 
    "start")
        # starts service logic here
    "stop") 
        # stops service logic here
    "filter") 
        # runs some .sh file from our PC
esac 

In order to upgrade to systemd I create myService.service file in systemd and set in the properties of the file on ExecuteStart and ExecuteStop to execute the init.d file with parameter start or stop,now I can do : systemctl start myService.service ,however if I want to invoke the filter option I am not allowed to do systemctl filter myService .service since "filter" is not valid option for systemctl .Any suggestions how can I overcome this?

Answer 1

This scheme does not fit within systemd responsibilities as a service manager, such as (but not limited to):

• running services (eg starting, stopping, etc.)
• the configuration of the above (eg which system level to run in)
• providing information on the status of a service
• declaring the dependencies and the handling between the various services

Although you did not provide information on the implementation of the service, it seems that the filter mode is an application/server specific action. Moreover, it's not clearly described what happens when the service is stopped and filter is issued.

So, keeping in mind the separation of concerns, I'd suggest using systemd to control the start and stop of your service, but use whatever IPC ( D-Bus , sockets , signals , etc.) that service is using to trigger the filter operation.