Ubuntu use Rsync+inotify-tools to implement one of the automatic file backups

Now there is a need, a server under a path to the file, want to back up to the B server below. Suppose a IP is 192.168.1.75,b IP is 192.168.1.85. Under Ubuntu you can use the Rsync software to work with the INotify tool to implement this feature.

1 rsync host-side configuration

The ubuntu16.03 system already has the Rsync software installed by default. You need to configure rsync software. A is a data source that needs to be configured as an rsync machine when using Inotify-tools. Configure B to be an rsync host. The rsyncd.conf configuration file is established under the/etc path of B, and the contents of the file are as follows:

# sample rsyncd.conf configuration file # GLOBAL OPTIONS #motd FILE=/ETC/MOTD log file=/var/log/rsyncd # for PID file, D
o not use/var/run/rsync.pid If # and are going to run rsync out of the init.d script.
# The INIT.D script does its own PID file handling, # So omit the ' PID file ' line completely in. PID file=/var/run/rsyncd.pid syslog facility=daemon #socket options= # Module options [ftp]//ftp This module name to remember comment = Pub LIC Archive Path =/data//This is the sync path use chroot = no # max connections=10 lock file =/var/lock/rsyncd # the default fo 
R Read Only is yes ... read only = no//This place is to be configured no, otherwise to the/data path to write files will occur error List = yes uid = root gid = root # exclude = # Exclude from = # include = # include from = Auth users =lzj//lzj is the user rsyncd.secrets inside the secrets file =/etc/rsyncd.s Ecrets Strict modes = yes hosts allow =192.168.1.75//allow a host to access # hosts Deny = ignore errors = yes ignore Nonread Able = yes transfer logging = no # log format =%t:host%h (%a)%o%f (%L bytes).
	Total%b bytes. Timeout = refuse options = Checksum dry-run dont compress = *.gz *.tgz *.zip *.z *.rpm *.deb *.iso *.bz2 *.TB Z

Then in the/ETC path to create a password file rsyncd.secrets, the content is:

Lzj:123

Then modify the/ect/default/rsync file:

# defaults file for rsync daemon mode # start rsync into daemon mode from INIT.D script? # only allowed values are ' true ', ' false ', and ' inetd ' # use ' inetd ' if you want ' to start ' rsyncd from inetd, # All This does was prevent the init.d script from printing a message # about not starting RSYNCD (for your still need to modify inet
d ' s config yourself).
Rsync_enable=true # which file should is used as the configuration file for rsync. 
# This file are used instead of the default/etc/rsyncd.conf # warning:this option has no effect if the daemon is accessed # using a remote shell.
 When the using a different file for # rsync and might want to symlink/etc/rsyncd.conf to # this file.
rsync_config_file=/etc/rsyncd.conf # What extra options to give Rsync--daemon? # that excludes the--daemon;
That ' s always do in the INIT.D script # possibilities are: #--address=123.45.67.89 (bind to a specific IP address) #--port=8730 (bind to specified port; Default 873) rsync_opts= ' # run RSYNCD at a nice level?  # The Rsync daemon can impact performance due to much I/O and CPU usage, # so/may want to run it at a nicer priority
than the default priority. # Allowed values are 0-19 inclusive;
is a reasonable value.
Rsync_nice= ' # run RSYNCD with Ionice?
# ' Ionice ' does for IO load what ' nice ' does for CPU load. # as Rsync is often used for backups which aren ' t all that time-critical, # reducing the rsync IO priority would benefit
The rest of the system.
# The manpage for Ionice for allowed options. #-C3 is recommended, this'll run rsync IO at "idle" priority.
Uncomment # The next line to activate this. # rsync_ionice= '-c3 ' # Don ' t forget to create a appropriate config file, # Else the daemon won't start.

Set permissions for synchronization path/data:

Chown-r Root:root/data

The root:root are the UID and GID set by rsyncd.conf.

Now that the B-terminal configuration is complete, run the following command to start the Rsync service:

/etc/init.d/rsync start

To see if the Rsync service starts:

Ps-e|grep rsync

9677? 00:00:00 rsync

2 A-terminal configuration

Set up the Rsync key file/etc/rsync.pass on a side, as follows:

123

Note that the password is all you need to write.

Then modify the permissions for the secret key file:

chmod 600/etc/rsync.pass

Establish a Sync folder and authorize the folder:

Mkdir/data

Chown-r Root:root/data

Install Inotify-tools on a end:

sudo apt-get install Inotify-tools

Set up shell script/sync.sh on a side, as follows:

Src=/data
dst=lzj@192.168.1.85::ftp/usr/bin/inotifywait-mr--timefmt '%d/%m/%y%h:%m '--format '%T '
 
- E Modify,delete,create,attrib $src | While read the
	rsync-vzrtopg--delete  --progress--password-file=/etc/rsync.pass $src $dst	
        Done
Exit 0

Authorize and run/sync.sh:

chmod +x/sync.sh

./sync.sh

Observe a new file or delete file in the/data folder on the end of a, and the/data directory on end B has a file change.