inotify + rsync 文件同步

安装：

# 服务端
yum  -y  install  rsync
# 客户端
yum  -y  install  rsync  inotify-tools

服务端（启动 rsync 服务）：

1. 创建配置文件：
   vim /etc/rsyncd.conf

   motd file = /etc/rsyncd.motd
   transfer logging = yes
   log file = /var/log/rsyncd.log
   port = 873
   address = xx.xx.xx.xx
   uid = root
   gid = root
   use chroot = no
   read only = no
   max connections = 10
   [common]
   comment = rsync lee
   path = /path/to/dir
   ignore errors
   auth users = test_user
   secrets file = /etc/rsyncd.secrets
   hosts allow = xx.xx.xx.xx/255.255.255.0
   hosts deny = *
   list = false

2. 创建密码文件：

   echo  "test_user:test_pass"  >  /etc/rsyncd.secrets
   chmod  600  /etc/rsyncd.secrets

3. 创建提示信息文件：
   echo "some message" > /etc/rsyncd.motd
4. 启动服务：
   rsync --daemon

客户端（将文件同步到服务端）：

1. 创建密码文件（免输入密码）：

   echo  "test_pass"  >  /root/passwd
   chmod  600  /root/passwd

2. 写监控脚本：
   vim auto_rsync.sh

   #!/bin/bash
   while inotifywait -rq -e modify,create,move,delete,attrib /path/to/dir  &>  /dev/null ; do
    rsync -avz /path/to/dir --password-file=/etc/rsyncd.secrets test_user@xx.xx.xx.xx::common  &>  /dev/null
   done &

3. 运行：

   chmod  +x  auto_rsync.sh
   ./auto_rsync.sh