Centos7 rsync+inotify实现实时同步更新

inotify slave部署  

   把master上指定文件下载到本地的主机指定目录

 yum install rsync –y
 [root@localhost ~]# useradd rsync -s /sbin/nologin -M
 [root@localhost ~]# mkdir -p /home/yxh/back
 [root@localhost ~]# chown rsync.rsync /home/yxh/back/

  echo rsync_backup:yxh >>/etc/rsync.password
   rsync_backup 为用户名
   yxh  为密码

[root@localhost ~]# chmod  /etc/rsync.password
[root@localhost ~]# rsync --daemon
[root@localhost ~]# ss -tunlp | grep rsync
tcp    LISTEN                    *:                   *:*                   users:(("rsync",pid=,fd=))
tcp    LISTEN                   :::                  :::*                   users:(("rsync",pid=,fd=))

重启rsync
[root@localhost back]# ps -ef | grep rsync
root               : ?        :: rsync --daemon
root            : pts/    :: grep --color=auto rsync
[root@localhost back]# kill -
[root@localhost back]# ps -ef | grep rsync
root            : pts/    :: grep --color=auto rsync
[root@localhost back]# rsync --daemon
failed to create pid file /var/run/rsyncd.pid: File exists
[root@localhost back]# rm -fr /var/run/rsyncd.pid
[root@localhost back]# ls
[root@localhost back]# rsync --daemon

安装流程

[root@localhost etc]# vi rsyncd.conf

# /etc/rsyncd: configuration file for rsync daemon mode

# See rsyncd.conf man page for more options.

# configuration example:

uid = rsync
gid = rsync
use chroot = no
max connections =
pid file = /var/run/rsyncd.pid
# exclude = lost+found/
# transfer logging = yes
timeout =
# ignore nonreadable = yes
# dont compress   = *.gz *.tgz *.zip *.z *.Z *.rpm *.deb *.bz2

[backup]
  path = /home/yxh/back/
  ignore errors
  read only = no
  write only = no
  list = false
  fake super = yes
  auth users = rsync_backup
  secrets file = /etc/rsync.password

rsyncd.conf

inotify master部署

      master主机上的文件发生变化的时候     slave主机会自动进行同步变化的文件

[root@node2 ~]# yum install rsync –y
[root@node2 ~]# wget http://github.com/downloads/rvoicilas/inotify-tools/inotify-tools-3.14.tar.gz
[root@node2 ~]# tar zxf inotify-tools-3.14.tar.gz
[root@node2 ~]# cd inotify-tools-3.14
[root@node2 inotify-tools-3.14]# ./configure --prefix=/usr/local/inotify
[root@node2 inotify-tools-3.14]# mkdir -p /home/yxh/back/
[root@node2 inotify-tools-3.14]# echo "yxh" >/etc/rsync.password
[root@node2 inotify-tools-3.14]# chmod  /etc/rsync.password

测试同步
[root@node2 back]# ls
test.txt
[root@node2 back]#  rsync  -avz /home/yxh/back/test.txt rsync_backup@192.168.11.175::backup --password-file=/etc/rsync.password

sending incremental file list
test.txt

sent  bytes  received  bytes  286.00 bytes/sec
total size is   speedup is 0.05

安装步骤

[root@node2 local]# vi inotify.sh

#!/bin/bash

host01=192.168.11.175
user=rsync_backup
rsync_passfile=/etc/rsync.password
inotify_home=/usr/local/inotify

#judge
if [ ! -e "$src" ] \
|| [ ! -e "${rsync_passfile}" ] \
|| [ ! -e "${inotify_home}/bin/inotifywait" ] \
|| [ ! -e "/usr/bin/rsync" ];
then
echo "Check File and Folder"
exit
fi

${inotify_home}/bin/inotifywait -mrq --timefmt '%d/%m/%y %H:%M' --format '%T %w%f' -e close_write,delete,create,attrib $src \
| while read file
do

#  rsync -avzP --delete --timeout= --password-file=${rsync_passfile} $src $user@$host01::$dst >/dev/null >&
cd $src && rsync -aruz -R --delete ./  --timeout= $user@$host01::$dst --password-file=${rsync_passfile} >/dev/null >&
done
exit 

同步脚本

3.执行脚本实现自动更新

[root@node2 local]# sh inotify.sh &       这种方式虽然可以实现脚本在后台运行 但是一旦关闭终端便会失效

nohup sh inotify.sh >run.log 2>&1 &      采取这种执行方式 即使关闭终端也可以生效 只要不重启系统即可一直在后台运行

[root@node2 local]# sh inotify.sh &
[] 

在master上添加一个test2.txt文件保存
[root@node2 back]# ls
test.txt
[root@node2 back]# vi test2.txt
[root@node2 back]# ls
test2.txt  test.txt

然后到slave节点上查看指定目录
test2.txt被自动同步到本地来
[root@localhost back]# ls
test2.txt  test.txt
[root@localhost back]# vi test2.txt

加入开机启动
# echo  "/bin/bash  /home/yxh/inotify.sh &" >>/etc/rc.local

NFS实现映射远程磁盘目录

nfs安装
   在两台机器上安装nsf 、 portmap
   yum  install  nfs-utils  portmap

88配置
  88机器上的/uploaddir目录映射到89本地的/uploaddir目录
  88编辑配置文件
  [root]# vi /etc/exports
  /uploaddir/ 10.199.142.89(rw,sync,no_root_squash)

  systemctl start rpcbind
  systemctl start nfs

  89配置
   systemctl start rpcbind
   systemctl start nfs

   mkdir /uploaddir
   mount -t nfs 10.199.142.88:/uploaddir/  /uploaddir/

   mount
    10.199.142.88:/uploaddir on /uploaddir type nfs4 

nfs安装配置

线上案例

vi /etc/rsync.password

root:rootpass

chmod  /etc/rsync.password

客户端配置用户名和密码

root@ etc]# vi rsyncd.conf

# /etc/rsyncd: configuration file for rsync daemon mode

# See rsyncd.conf man page for more options.

# configuration example:

uid =root
gid =root
use chroot = yes
max connections =
pid file = /var/run/rsyncd.pid
# exclude = lost+found/
# transfer logging = yes
timeout =
# ignore nonreadable = yes
# dont compress   = *.gz *.tgz *.zip *.z *.Z *.rpm *.deb *.bz2

# [ftp]
#        path = /home/ftp
#        comment = ftp export area

uid = root
gid = root
use chroot = no
max connections =
strict modes = yes
hosts allow =
port =
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsyncd.log

[backup]
path = /deploydir
ignore errors
read only = no
write only = no
list = false
fake super = yes
secrets file = /etc/rsync.password

客户端rsyncd.conf

[root@ inotify-tools-3.14]# echo "rootpass" >/etc/rsync.password
[root@ inotify-tools-3.14]#  chmod  /etc/rsync.password

[root@ uploaddir]# rsync -avz /uploaddir/.txt root@10.89::backup --password-file=/etc/rsync.password

服务端配置和测试

[root@ ~]# vi inotify.sh

#!/bin/bash
src=/uploaddir
host01=1.89
host02=1.90
user=root
dst=backup
rsync_passfile=/etc/rsync.password
inotify_home=/usr

#judge
if [ ! -e "$src" ] \
|| [ ! -e "${rsync_passfile}" ] \
|| [ ! -e "${inotify_home}/bin/inotifywait" ] \
|| [ ! -e "/usr/bin/rsync" ];
then
echo "Check File and Folder"
exit
fi

${inotify_home}/bin/inotifywait -mrq --timefmt '%d/%m/%y %H:%M' --format '%T %w%f' -e close_write,delete,create,attrib $src \
| while read file
do

cd $src && rsync -aruz -R --delete ./  --timeout= $user@$host01::$dst --password-file=${rsync_passfile} >/dev/null >&

cd $src && rsync -aruz -R --delete ./  --timeout= $user@$host02::$dst --password-file=${rsync_passfile} >/dev/null >&
done
exit 

后台服务脚本

[root@-]# cat /etc/rsync.password
rootpass

[root@]# cat /etc/rsync/rsync.password
root:rootpass

[root@]# cat /etc/rsyncd.conf
pid file = /var/run/rsyncd.pid
uid = nobody
gid = nobody
use chroot = no
log format = %t %a %m %f %b
syslog facility = local3
timeout =
address = 10.8

[backup]
uid =root
gid =root
use chroot = yes
max connections =
path = /deploydir
ignore errors
read only = no
write only = no
list = false
fake super = yes
secrets file = /etc/rsync/rsync.password

同一主机既是服务端也是客户端