Hello, @jinkangkang, thanks for reaching out and reporting this.
This is the expected behavior for sshd.
If your configuration is not correct, the command will state it as it
should.
If your configuration is correct, no config errors are shown, as sshd is
able to parse the config file. Then, after that, it says the privilege
separation directory is not there, not exactly because you are not
running the daemon, but because you are running sshd as root. The root
user (or kerberos authenticated user) need the dir to be present to be
able to run sshd - you can check that, running as root, this error
happens even without the -t flag.
If your configuration is correct and you run sshd -t as a non-root user, it
should work without complaining about the directory.
I am closing this bug as invalid, but please feel free to reopen and add
context if you think something in this flow is wrong.
** Changed in: openssh (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2107356
Title:
sshd -t check failed when sshd not running
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