Q: Could you please just provide the exact command line I would us in SSH so that I can backup my complete server AND data per the following:
1). Backup to a local machine
2). Don't stop the services (I am the only one who uses Plesk)
3). Zip the file
A:
1) You can use file or directory name (not '-') after '-f' for this
purpose. '--force' can be added dto overwrite existent backup file.
2) --nostop will stop only current domain. This is quite slowly,
because much time is spent on swiching domains off/on. Usually accompanied
by --tar-ignore-failed-read.
--nostop --nostop-domain won't really stop services.
--tar-ignore-failed-read is mandatory.
3) Virtual hosts are compressed by default. Additional options are not required.
Q: I have backuped Plesk through CP, then moved this backup to other
server I have installed from scratch. When I tried to restore data from
backup, it failed with error message "signature verification failed".
A: When you backup the domain through control panel Plesk signes it. So
this backup can be restored through control panel only on the same server.
If you need to install it on some other server (or on the same server
with new Plesk installed), you can do this using command line utilities..
A: When happens backup of some domain, this domain is getting stopped temporarily, for the time of backup. It has been done in order to keep data consistity, for Customer were unable to change any data during backup.