Centos6安装配置Unison+Inotify双向同步
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Unison简介 Unison是windows和unix平台下都可以使用的文件同步工具，它能使两个文件夹（本地或网络上的）保持内容的一致。unison拥有其它一些同步工具或文件系统的相同特性，但也有自己的特点： 1.跨平台使用； 2.对内核和用户权限没有特别要求； 3. unison是双向的，它能自动处理两分拷贝中更新没有冲突的部分，有冲突的部分将会显示出来让用户选择更新策略； 4.只要是能连通的两台主机，就可以运行unison，可以直接使用socket连接或安全的ssh连接方式，对带宽的要求不高，使用类似rsync的压缩传输协议 unison各种版本下载地址： http://www.seas.upenn.edu/~bcpierce/unison//download.html unison编译器下载地址： http://caml.inria.fr/download.en.html inotify下载地址 http://inotify-tools.sourceforge.net/ 一、编译安装unison 1、#编译安装ocaml [[email protected] ~]# cd /usr/local/src/ [[email protected] src]# wget http://caml.inria.fr/pub/distrib/ocaml-4.03/ocaml-4.03.0.tar.gz [[email protected] src]# tar xf ocaml-4.03.0.tar.gz [[email protected] src]# cd ocaml-4.03.0 [[email protected] ocaml-4.03.0]# ./configure [[email protected] ocaml-4.03.0]# make world opt [[email protected] ocaml-4.03.0]# make install 2、#编译安装Unison [[email protected] ~]# cd /usr/local/src/ [[email protected] src]# wget http://www.seas.upenn.edu/~bcpierce/unison//download/releases/stable/unison-2.48.4.tar.gz [[email protected] src]# tar xf unison-2.48.4.tar.gz [[email protected] src]# cd src/ [[email protected] src]# yum install -y ctags-etags glibc-static [[email protected] src]# make UISTYLE=text THREADS=true STATIC=true #使用 ”UISTYLE=text THREADS=true STATIC=true“ 表示使用命令行方式，加入线程支持，以静态模式编译 #在执行完上面的命令后，会在当前目录下生成可执行文件unison，将其复制到系统的PATH路径即可 [[email protected] src]# cp unison /usr/local/bin/ 二、配置双机ssh信任 unison同步远程目录时要登录到远程服务器，配置互相信任 1，在俩台机器上创建RSA密钥 （1）以root用户登录 （2）在root用户的主目录内创建.ssh目录并设置正确的权限 [[email protected] ~]# mkdir ~/.ssh [[email protected] ~]# chmod -R 700 ~/.ssh （3）使用sshh-keygen命令生产RSA密钥 [[email protected] ~]# ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: 75:e4:e8:90:47:3b:c3:60:7a:6d:85:a0:45:db:c1:9e [email protected] The key‘s randomart image is: +--[ RSA 2048]----+ | .*oo.o | | = OoB | | o =.%.o | | . *E+ | | S . | | | | | | | | | +-----------------+ 2、#添加密钥到授权密钥文件中 （1）以root用户登录 （2）在本机执行： [[email protected] ~]# cd ~/.ssh [[email protected] .ssh]# ssh "-p 22" 192.168.9.104 cat /root/.ssh/id_rsa.pub >> authorized_keys [[email protected] .ssh]# ssh "-p 22" 192.168.9.106 cat /root/.ssh/id_rsa.pub >> authorized_keys [[email protected] .ssh]# scp authorized_keys 192.168.9.106:/root/.ssh/ [email protected]‘s password: authorized_keys 100% 780 0.8KB/s 00:00 [[email protected] .ssh]# chmod 600 /root/.ssh/authorized_keys （3）在106机器上执行 [[email protected] ~]# chmod 600 /root/.ssh/authorized_keys （4）验证测试 [[email protected] .ssh]# ssh 192.168.9.104 date Wed Aug 31 12:10:27 CST 2016 [[email protected] .ssh]# ssh 192.168.9.106 date Wed Aug 31 12:10:46 CST 2016 [[email protected] ~]# ssh 192.168.9.104 date The authenticity of host ‘192.168.9.104 (192.168.9.104)‘ can‘t be established. RSA key fingerprint is 57:83:da:b9:ee:de:2a:1f:f1:74:da:ec:43:fa:7b:56. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added ‘192.168.9.104‘ (RSA) to the list of known hosts. Wed Aug 31 12:11:10 CST 2016 [[email protected] ~]# ssh 192.168.9.106 date The authenticity of host ‘192.168.9.106 (192.168.9.106)‘ can‘t be established. RSA key fingerprint is 67:ff:e7:b0:5f:3b:46:e9:d7:8d:e1:10:21:02:8b:ce. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added ‘192.168.9.106‘ (RSA) to the list of known hosts. Wed Aug 31 12:11:30 CST 2016 #不需要输入密码就能显示系统日期，说明ssh互相信任配置成功 三、编译安装inotify #inotify特性需要Linux内核的支持，安装inotify-tools确认系统内核为2.6.13版本以上， [[email protected] ~]# uname -r 2.6.32-431.el6.x86_64 [[email protected] ~]# ls -l /proc/sys/fs/inotify total 0 -rw-r--r-- 1 root root 0 Aug 30 12:28 max_queued_events -rw-r--r-- 1 root root 0 Aug 30 12:28 max_user_instances -rw-r--r-- 1 root root 0 Aug 30 12:28 max_user_watches 如果有上面三项输出，表示系统已经默认支持inotify，接着就可以开始安装inotify-tools了。 [[email protected] ~]# cd /usr/local/src/ [[email protected] src]# wget http://github.com/downloads/rvoicilas/inotify-tools/inotify-tools-3.14.tar.gz [[email protected] src]# tar xf inotify-tools-3.14.tar.gz [[email protected] src]# cd inotify-tools-3.14 [[email protected] inotify-tools-3.14]# ./configure [[email protected] inotify-tools-3.14]# make [[email protected] inotify-tools-3.14]# make install [[email protected] inotify-tools-3.14]# ll /usr/local/bin/inotifywa* -rwxr-xr-x 1 root root 44287 Aug 31 12:23 /usr/local/bin/inotifywait -rwxr-xr-x 1 root root 41377 Aug 31 12:23 /usr/local/bin/inotifywatch #inotify-tools安装完成后，会生成inotifywait和inotifywatch两个指令，其中，inotifywait用于等待文件或文件集上的一个特定事件，它可以监控任何文件和目录设置，并且可以递归地监控整个目录树。 inotifywatch用于收集被监控的文件系统统计数据，包括每个inotify事件发生多少次等信息。 四，配置unison，测试同步zabbix的php目录 #104编写脚本 [[email protected] ~]# vim /data0/inotify.sh #/bin/bash ip2="192.168.9.106" src2="/data0/a/" dst2="/data0/a/" /usr/local/bin/inotifywait -mrq -e create,delete,modify,move $src2 | while read line; do /usr/local/bin/unison -batch $src2 ssh://$ip2/$dst2 echo -n "$line " >> /var/log/inotify.log echo `date | cut -d " " -f1-4` >> /var/log/inotify.log done [[email protected] ~]# chmod +x /data0/inotify.sh [[email protected] ~]# nohup /data0/inotify.sh & #106编写脚本 [[email protected] ~]# vim /data0/inotify.sh #/bin/bash ip1="192.168.9.104" src1="/data0/a/" dst1="/data0/a/" /usr/local/bin/inotifywait -mrq -e create,delete,modify,move $src1 | while read line; do /usr/local/bin/unison -batch $src1 ssh://$ip1/$dst1 echo -n "$line " >> /var/log/inotify.log echo `date | cut -d " " -f1-4` >> /var/log/inotify.log done [[email protected] ~]# chmod +x /data0/inotify.sh [[email protected] ~]# nohup /data0/inotify.sh & 五、测试
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