Hi Lennart, Thank you, I will reconsider this design.
John Lin Lennart Poettering <lenn...@poettering.net> 於 2018年1月24日 週三 19:41 寫道: > On Di, 26.12.17 01:39, 林自均 (johnl...@gmail.com) wrote: > > > Hi folks, > > > > I am trying to achieve: > > > > # systemctl start sshd-shell.service (1) > > # systemctl start sshd-sftp.service (2) > > # systemctl stop sshd-shell.service (3) > > # systemctl stop sshd-sftp.service (4) > > > > Before the command (1), sshd is not running. By typing (1), > > /etc/sshd_config is configured to accept ssh shell connections but no > sftp > > connections, and then start sshd. By typing (2), /etc/sshd_config is > > configured to accept sftp connections too, and sshd is reloaded. By > typing > > (3), /etc/sshd_config is configured to refuse ssh shell connection, and > > sshd is reloaded again. By typing (4), sshd will be stopped. > > Quite frankly, this is not really in line with how systemd services > are supposed to be used. They are supposed to wrap running processes, > but not wrap configuration applied to others really. > > But anyway, of course, it's up to you how to make use of this stuff... > > > The current problem is that I don't know if there is a better way to > > achieve this. For example, I have to sleep 1 second before reloading > > sshd-core.service in sshd-shell.service because otherwise sshd didn't > setup > > the signal handler for SIGHUP and will terminate itself. Or systemd > doesn't > > suggest such use case? > > Yes, it's not really in-line with how this stuff was designed... > > That said, I am pretty sure there's something wrong with your > sshd-core.service: the unit should not be considered up before the > daemon process is fully running, and that includes having set up > SIGHUP handlers properly. > > Most likely the Type= stuff is not set up correctly in that unit (or > sshd is broken and doesn't set things up fully before reporting its > startup being complete). > > Lennart > > -- > Lennart Poettering, Red Hat >
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