[yocto] Make the service the last run in boot

[JH]

The application requires network connection to communicate services
via Internet, it could only work if the network connection is ready,
so I really want to know which system servuce run at last I could put
it in the After statement.

On 8/1/19, ChenQi <Qi.Chen at windriver.com> wrote:
> On 08/01/2019 03:37 PM, JH wrote:
>> Hi,
>>
>> How can I find the systemd last run service I can put it in my network
>> application After=<last run tartget or service>?
>>
>> I need my network application service to be run at last in boot, I
>> made After=connman and Requires=connman.service that did not work,
>> always failed in boot, I have to manually restart the network
>> application service which won't work in field operation.
>
> I'd suggest you find out what you network service actually require.
>
>> Searched from Internet, there is a blog Systemd: Run it last to create
>> a custom.target After=multi-user.target, and put my network
>> application service WantedBy=custom.target, that works well, but it is
>> a little bit cumbersome to configure customer.target in Yocto bb file,
>> enabling the customer.target is called systemctl isolate
>> custom.target, the /etc/systemd/system/default.target link needs be
>> changed to from multi-user.target to custom.target. I am not sure how
>> it could be done in do_install, appreciate your tips.
>>
>> Thank you.
>>
>> Kind regards,
>>
>> - JH
>
>
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