Rsync - File Synchronization

Rsync is an open source utility that provides fast incremental file transfer, making good use of delta encoding to reduce the amount of data transferred. In daemon mode, rsync listens on port 873 and transfers files over the rsync protocol. In ssh mode, files are transferred over the ssh protocol.

Installation

apt-get install rsync

Configuration

Server side

vi /etc/rsyncd.conf

#motd file=/etc/motd
log file=/var/log/rsyncd.log
pid file=/var/run/rsyncd.pid
#syslog facility=daemon
#socket options=
[ftp]
       comment = public archive
       path = PATH
       use chroot = yes
#      max connections=10
       lock file = /var/lock/rsyncd
       read only = no
       list = yes
       uid = nobody 和目录属主保持一致
       gid = nogroup 和目录属组保持一致
#      exclude =
#      exclude from =
#      include =
#      include from =
       auth users =
       secrets file = /etc/rsyncd.secrets
       strict modes = yes
       hosts allow = ip地址
#      hosts deny =
       ignore errors = no
       ignore nonreadable = yes
       transfer logging = no
#      log format = %t: host %h (%a) %o %f (%l bytes). Total %b bytes.
       timeout = 600
       refuse options = checksum dry-run
       dont compress = *.gz *.tgz *.zip *.z *.rpm *.deb *.iso *.bz2 *.tbz

vi /etc/rsyncd.secrets
user:userpasswd

chmod 600 /etc/rsyncd.secrets
service rsync start

Client side

vi /etc/rsyncd.secrets
userpasswd

chmod 600 /etc/rsyncd.secrets

Syntax

本地同步:
rsync [OPTION...] SRC... DEST

通过远程 ssh:
Pull:
rsync [OPTION...] [USER@]HOST:SRC... DEST
Push:
rsync [OPTION...] SRC... [USER@]HOST:DEST

通过 rsync 服务器:
Pull:
rsync [OPTION...] [USER@]HOST::SRC... DEST
rsync [OPTION...] rsync://[USER@]HOST[:PORT]/SRC... DEST
Push:
rsync [OPTION...] SRC... [USER@]HOST::DEST
rsync [OPTION...] SRC... rsync://[USER@]HOST[:PORT]/DEST

-r recursively sync directories

-l preserve symlinks

-p preserve file permissions

-t preserve file modification times

-g preserve file group ownership (if the user running rsync is not a superuser, group ownership is only preserved if the invoking user is a member of the source file’s group)

-o preserve file owner (super-user only)

-D preserve device files and special files (super-user only)

-a archive mode, equivalent to -rlptgoD

-v verbose output

-z enable compression

–compress-level=NUM explicitly set the compression level

-P show progress and support resuming interrupted transfers

-e use ssh, with ssh syntax

-H preserve hard links

-L when a symlink is encountered, sync the file it points to rather than the symlink itself

-u skip files that have been modified on the destination

–delete delete files on DEST that don’t exist on SRC