Rsync is an open source, fast, multi-functional, excellent tool that can achieve full and incremental local or remote data synchronization backup, and is also one of the essential skills of operation and maintenance personnel. So what are the characteristics of Rsync that make it such a status?
1. What are the features of Rsync?
1) Support copying special files, such as connection files, devices, etc.
2) Exclude the synchronization of the specified file or directory, which is equivalent to the exclusion of tar in the packaging command
3) Keep the permissions, time, soft and hard links, owner, group and other attributes of the source file or directory unchanged -p
4) Incremental synchronization, that is, only the changed data is synchronized, and the data transmission efficiency is high, tar -N
5) Use rcp, rsh, ssh, etc. to cooperate with transferring files
6) Files and data can be transferred through socket
7) Support anonymous or authenticated process mode transmission, which can realize convenient and safe data backup and mirroring
2. What are the advantages of Rsync?
1) Incremental backup, support socket, centralized backup
2) The remote shell channel mode can be encrypted for transmission, and the socket needs to be encrypted for transmission
3. What are the disadvantages of Rsync?
1) When a large number of small files are synchronized, the comparison event is long, and sometimes the rsync process may stop
2) When synchronizing large files, sometimes large files of 10G may have interruption problems. Before the complete synchronization, they belong to hidden files.
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