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Old 16th November 2009, 16:58
jnsc jnsc is offline
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Default Copiying /etc/shadow with sudo and rsync


I have a little problem, and at the first look it might look easy, but it's not, or at least I did not find an easy solution. I have 2 server, which must rsync some files, including /etc/passwd and /etc/shadow. Everything was working fine until we decided to forbid rootlogin on the server, and use sudo for the sync. My problem is that /etc/shadow has a file permission of 400, so the non privilegd user can not read it, so I can use a command like this
rsync  --rsync-path='sudo rsync' --rsh='/usr/bin/ssh -x' --archive /etc/shadow user@server2:/etc/shadow
because user is not authorised to read /etc/shadow, so I tried this
rsync  --rsync-path='sudo rsync' --rsh='/usr/bin/ssh -x' --archive user@localhost:/etc/shadow user@server2:/etc/shadow
so that it uses sudo twice, but I get this error
rsync: mkstemp "/home/user/user@server2:/etc/.shadow.wBWPkX" failed: No such file or directory (2)
rsync error: some files could not be transferred (code 23) at main.c(1146)
So does somebody know an easy and Secure solution?

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