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Full Discussion: rsync and ssh keys help
Operating Systems OS X (Apple) rsync and ssh keys help Post 302690715 by kleinboy on Thursday 23rd of August 2012 09:53:22 AM
Old 08-23-2012
rsync and ssh keys help
Not specifically a mac question, but it's what I am using.

I am setting up some replication for some file shares using rsync. The problem is that I am being given a little bit of a twist - I'm supposed to use a non-admin account to do it with.

I have 2 boxes - Master and Slave with 1 account (sharesync). I setup a pub/private key pair and am able to successfully ssh from slave to master. I can also run rsync from the slave to the master. My problem is that rsync fails, complaining that it can't change ownership/permissions on the files that it just placed on the slave. This makes sense in that it requires admin rights to be able to chown files.

Is there a way to allow the non-admin sharesync account to rsync files? Or do I just tell the guy that we will do it the old fashioned way - using a root/admin account?

This works, by running it out of an admin account, but does not work with the sharesync key pair:
Code:
sudo -u sharesync /usr/bin/rsync -ahvv --delete --log-file=/Users/Shared/$(date +%Y%m%d)rsynclog_nosudo.txt sharesync@mastershare.example.com:/Volumes/X2_Data/Shares/CasperShare/ /Volumes/Data/Shares/CasperShare/

This works with the ssh key pair, but fails when rsync tries to change ownership and set times:
Code:
/usr/bin/rsync -ahvv --delete --log-file=/Users/Shared/$(date +%Y%m%d)rsynclog_nosudo.txt sharesync@mastershare.example.com:/Volumes/X2_Data/Shares/CasperShare/ /Volumes/Data/Shares/CasperShare/
sent 127.34K bytes  received 22.65M bytes  15.19M bytes/sec
total size is 109.88G  speedup is 4823.39
rsync error: some files could not be transferred (code 23) at /SourceCache/rsync/rsync-42/rsync/main.c(1400) [generator=2.6.9]

 

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LEARN ABOUT DEBIAN

vzmigrate

vzmigrate(8)							    Containers							      vzmigrate(8)

NAME

       vzmigrate - migrate a container between two OpenVZ servers

SYNOPSIS

       vzmigrate [-r|--remove-area yes|no] [--ssh=ssh_options] [--rsync=rsync_options] [--keep-dst] [--online] [-v] destination_address CTID

DESCRIPTION

       This  utility  is  used	to  migrate  a container from one (source) Hardware Node (HN) to another (destination) HN. The utility can migrate
       either stopped or running container. For a stopped container, simple CT private area transfer is  performed  (rsync(1)  is  used  for  file
       transfer). For running containers, migration may be offline (default) or online.

       This  program uses ssh as a transport layer. You will need to put ssh public key to destination node and be able to connect to node without
       entering password.

OPTIONS

       -r, --remove-area yes | no
	      Whether to remove a container area on source HN for the successfully migrated container. Default is yes.

       --ssh=options
	      Additional options that will be passed to ssh while establishing connection to destination HN.

       --rsync=options
	      Additional options that will be passed to rsync(8).  You may add options like -z to enable data compression  if  you  are  migrating
	      over a slow link.

       --keep-dst
	      Do  not  clean  synced  destination container private area in case of some error. It makes sense to use this option on big container
	      migration to avoid syncing container private area again in case some error (on container	stop  for  example)  occurs  during  first
	      migration attempt.

       --online
	      Perform  online (zero-downtime) migration: during the migration the container hangs for a while and after the migration it continues
	      working as though nothing has happened.

       -v     Verbose mode. Causes vzmigrate to print debugging messages about its progress.  Multiple -v options  increase  the  verbosity.   The
	      maximum is 3.

EXAMPLES

       Migration of CT 101 to 192.168.1.130 with downtime:

	  vzmigrate 192.168.1.130 101

       Online migration of CT 102 to 192.168.1.130:

	  vzmigrate --online 192.168.1.130 102

EXIT STATUS

       0 EXIT_OK
	      Command completed successfully.

       1 EXIT_USAGE
	      Bad command line options.

       2 EXIT_VE_STOPPED
	      Container is stopped.

       4 EXIT_CONNECT
	      Can't connect to destination (source) HN.

       6 EXIT_COPY
	      Container private area copying/moving failed.

       7 EXIT_VE_START
	      Can't start or restore destination CT.

       8 EXIT_VE_STOP
	      Can't stop or checkpoint source CT.

       9 EXIT_EXISTS
	      Container already exists on destination HN.

       10 EXIT_NOTEXIST
	      Container does not exists on source HN.

       12 EXIT_IP_INUSE
	      You attempt to migrate CT which IP address(es) are already in use on the destination node.

       13 EXIT_QUOTA
	      Operation with CT quota failed.

SEE ALSO

       rsync(1).

COPYRIGHT

       Copyright (C) 2001-2010, Parallels, Inc. Licensed under GNU GPL.

OpenVZ								    28 Jun 2011 						      vzmigrate(8)
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