Rsync Synchronous Backup Quick Configuration Memo

Rsync Backup, synchronization of directory Files of the good tools, support increment, compression, difference ratio equivalent advanced characteristics;

Server-side Simple configuration file:

Temporary Quick Start rsync daemon
#rsync--daemon

Client Quick Sync Method:

Quickly synchronize all files from the remote host to the current directory via the network, wwwroot

RSYNC-ACVZWS4--bwlimit=2048 rsync://host.domain.name/wwwroot/./

Parameter function:

A archive method backup, maintain file permissions;
C Force File Transfer checksum,
V Display transmission information,
Z Enables compression transfer,
W directly copy all files without incremental detection (the first time synchronization, because the files are completely new copy to the local, do not enable incremental detection can greatly improve efficiency);
Note: If the first synchronization is interrupted, or the current directory already exists part of the file, need to be synchronized, the W parameter will be taken away, Rsync will have the existing file differential checksum, so that only the difference between the files, or whether the file exists, all files will be copied once;
S4 optimize the small file transfer performance, synchronization of a large number of small files when enabled;
--bwlimit=2048 Transmission Bandwidth limit 2mb/s, for Network limited environment enabled, to ensure that the synchronization flow will not be full bandwidth;
The above is my own commonly used synchronization commands and parameters; rsync also has many more detailed parameter functions, which are also recorded here for future use:

Rsync parameter Options Description

-V,--verbose verbose mode output
-Q,--quiet thin output mode
-C,--checksum Open the check switch to force the file transfer to verify
-A,--archive archive mode, which represents the transfer of files recursively and maintains all file attributes equal to-rlptgod
-R,--recursive the subdirectory in recursive mode
-R,--relative using relative path information
Rsync foo/bar/foo.c remote:/tmp/
The Rsync parameter creates the foo.c file in the/tmp directory, and if the-R parameter is used:
Rsync-r foo/bar/foo.c remote:/tmp/
The Rsync parameter creates the file/tmp/foo/bar/foo.c, which means that the full path information is persisted.
-B,--backup creates a backup, which means that the old file is renamed to ~filename for the same file name already exists for the purpose. You can use the--suffix option to specify different backup file prefixes.
--backup-dir store backup files (such as ~filename) in the directory.
-suffix=suffix defines the backup file prefix
-U,--update only updates, skipping all files that already exist in DST, and the file time is later than the file you want to back up. (Do not overwrite the updated file)
-L,--links retention soft link knot
-L,--copy-links to treat soft links like regular files
--copy-unsafe-links only copies links that point beyond the src Path directory tree
--safe-links ignores links to the SRC path tree
-H,--hard-links keep hard links
-P,--perms keep file permissions
-O,--owner keep file owner information
-G,--group keep file group information
-D,--devices maintain device file information
-T,--times keep file time information
-S,--sparse special handling of sparse files to save DST space
-N,--dry-run which files will be transmitted
-W,--whole-file copy files without incremental detection
-X,--one-file-system do not cross file system boundaries
-B, the block size used by the--block-size=size test algorithm is 700 bytes by default
-E,--rsh=command specifies a shell program that replaces rsh
--RSYNC-PATH=PATH Specifies the path information for the rsync command on the remote server
-C,--cvs-exclude use the same method as CVs to automatically ignore files to exclude files that you do not want to transfer
--existing updates only those files that already exist in DST, not the newly created files
--delete Delete files that are not in the DST SRC
--delete-excluded also deletes the receiving end of files that are excluded by the option specified
--delete-after after transmission is over
--ignore-errors in time IO errors are also deleted
--max-delete=num Delete NUM files up to
--partial retains files that are not fully transmitted for some reason, to expedite subsequent transmissions
--force forcibly deletes a directory, even if it is not empty
--numeric-ids does not match the user and group IDs of numbers to user and group names
--timeout=time IP timeout time in seconds
-I,--ignore-times not skip those files that have the same time and length
--size-only when deciding whether to back up a file, just look at the file size without considering the file time
--modify-window=num the time stamp window that determines whether a file is in the same time, default is 0
-t--temp-dir=dir create temporary files in dir
--compare-dest=dir also compares files in DIR to determine whether a backup is required
-P equals to--partial
--progress Display backup process
-Z,--compress compression of backed-up files on transfer
--EXCLUDE=PATTERN Specifies to exclude file modes that do not require transfer
--INCLUDE=PATTERN Specifies the file mode that is not excluded and needs to be transferred
--exclude-from=file exclude files in the specified mode in file
--include-from=file does not exclude files that match the file-specified pattern
--version Print version Information
--address bound to a specific address
--CONFIG=FILE specifies a different profile and does not use the default rsyncd.conf file
--PORT=PORT Specifies the other rsync service ports
--blocking-io blocking IO for a remote shell
-stats gives the transfer status of some files
--progress transmission process in real time
--log-format=format Specify log file format
--password-file=file gets the password from file
--bwlimit=kbps limit I/O bandwidth, Kbytes per second
-H,--help display Help information