lsync
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【lsync】
详细说明：
https://www.cnblogs.com/zxci/p/6243574.html
安装：
yum install lsyncd
一、lrsync+ssh+shell模式 （root用户）
1. 先做双机互信
====================ssh互信==========================
方式一：
root：
1.制作公钥：
源机器上生成公钥
#ssh-keygen
2.拷贝公钥到目标机器
ssh-copy-id -i ~/.ssh/id_rsa.pub "-p 11223 root@103.35.117.196"
方式二：
root:
做双机信任
把 cat /root/.ssh/id_rsa.pub 的内容
拷贝到 目标端的
/root/.ssh/authorized_keys
到节点
mkdir /root/.ssh
cd /root/.ssh
/root/.ssh/authorized_keys
chmod 700 -R /root
chmod 644 /root/.ssh/*
关闭限制root登陆
vim /etc/ssh/sshd_config
#PermitRootLogin no
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普通用户互信
那就注意： 权限和目录都是普通目录的
mkdir /home/bwttomcat/.ssh
传公钥
chmod 700 -R /home/bwttomcat
chown -R bwttomcat:bwttomcat /home/bwttomcat/.ssh
chmod 644 /home/bwttomcat/.ssh/*
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===================server安装配置===================
=========================================================
#yum -y install lsyncd
vim /etc/lsyncd.conf
settings { logfile = "/var/log/lsyncd/lsyncd.log", statusFile = "/var/log/lsyncd/lsyncd.status", inotifyMode = "CloseWrite or Modify", maxProcesses = 16, } sync { default.rsync, source = "/home/nativeapp", target = "root@103.35.117.196:/home/nativeapp", delete = false, delay = 5, -- init = true, rsync = { binary = "/usr/bin/rsync", archive = true, compress = false, rsh = "/usr/bin/ssh -p 11223 -o StrictHostKeyChecking=no" } }
二、lrsync+rsync模式 （rsync用户）
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===================server安装配置===================
=========================================================
#yum -y install lsyncd
useradd rsync -s /sbin/nologin -M
vim /etc/lsyncd.conf
settings { logfile = "/var/log/lsyncd.log", statusFile = "/var/log/lsyncd.status", inotifyMode = "CloseWrite or Modify", maxProcesses = 16, } sync{ default.rsync, source = "/usr/local/nginx/conf/http_facadehost_acg/", target = "rsync_backup@35.201.186.54::http_facadehost_acg/", delete = false, rsync = { binary = "/usr/bin/rsync", archive = true, compress = true, verbose = true, password_file = "/etc/rsync.password", _extra = {"--bwlimit=20000"}, } } sync{ default.rsync, source = "/home/dataacg/", target = "rsync_backup@35.201.186.54::dataacg/", delete = false, rsync = { binary = "/usr/bin/rsync", archive = true, compress = true, verbose = true, password_file = "/etc/rsync.password", _extra = {"--bwlimit=20000"}, } }
创建密码文件：
vim /etc/rsync.pass 10vqpPXw chmod 400 /etc/rsync.pass
重启：
/etc/init.d/lsyncd restart && tailf /var/log/lsyncd/lsyncd.log
centos7: lsyncd -nodaemon /etc/lsyncd.conf (先查看报错) systemctl start lsyncd.service && tailf /var/log/lsyncd/lsyncd.log
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===================cilent安装配置===================
=========================================================
1.系统自带的rsync
注意：
同步的目录必须存在
hosts allow = 144.48.220.63/29 配置必须加好
客户端要开放873给服务端访问
firewall-cmd --zone=public --add-port=873/tcp --permanent
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.142.166" port protocol="tcp" port="873" accept"
firewall-cmd --reload
firewall-cmd --list-all
vim /etc/rsyncd.conf
#Rsync server uid = root gid = root use chroot = no max connections = 4000 timeout = 600 pid file =/var/run/rsyncd.pid lock file =/var/run/rsync.lock log file = /var/log/rsyncd.log ignore errors read only = false list = false hosts allow = 144.48.220.63/29 hosts allow = 144.48.220.57/29 hosts deny = 0.0.0.0/32 auth users = rsync_backup secrets file =/etc/rsync.password ################################################ [http_facadehost_bwt] comment = http_facadehost_bwt path = /usr/local/nginx/conf/http_facadehost_bwt/ ############################################## [databwt] comment = databwt path = /home/databwt/ exclude = nginx ############################################ [http_facadehost_bwt_source] comment = http_facadehost_bwt_source path = /usr/local/nginx/conf/http_facadehost_bwt_source/ ############################################## [databwt_source] comment = databwt_source path = /home/databwt_source/ exclude = nginx ###########################################
2.创建passwd
vim /etc/rsync.password
rsync_backup:10vqpPXw
3.授权
chmod 700 /etc/rsync.password
4.启动
rsync --daemon ps -fe|grep rsync
查看日志传输是否正常：
tailf /var/log/rsyncd.log
5.监控rsync
cat /etc/crontab
# rsync status check * * * * * /bin/bash /home/scripts/rsync_monitor.sh
cat /home/scripts/rsync_monitor.sh
#!/bin/bash #Desc: rsync process monitor script. #Auth: jeck #Date: 2017-4-2 ip=$(/sbin/ifconfig | grep -A3 -w "HWaddr" | grep "inet addr" | head -1 | cut -f 2 -d ":" | cut -f 1 -d " "|sed -n 1p) date=$(/bin/date +"%Y-%m-%d %H:%M:%S") rsync_status=$(/bin/ps -ef | grep "rsync --daemon" | grep -v grep | wc -l) if [ $rsync_status -lt 1 ]; then echo "${date} ${ip} rsync process is stopped, restarting..." &>> /tmp/rsync_monitor.out /usr/bin/rsync --daemon echo "${date} ${ip} rsync process is running." &>> /tmp/rsync_monitor.out else echo "${date} ${ip} rsync process is running." &>> /tmp/rsync_monitor.out fi
====================================================================================
问题1：
执行命令：/etc/init.d/lsyncd status
显示：lsyncd 已死，但 pid 文件仍存
于是查看日志文件：cat /var/log/lsyncd/lsyncd.log
日志里显示：
Error: Terminating since out of inotify watches.
Consider increasing /proc/sys/fs/inotify/max_user_watches
其中 max_user_watches 是一个文件，里面有一个数字值，表示每个inotify实例可监听的最大上限数量。
这问题明显就是文件增多，导致无法监控更多的文件，把里面的那个值改大点就可以了
修改方法1：echo 10008192 > /proc/sys/fs/inotify/max_user_watches（修改后，Linux系统重启inotify配置max_user_watches无效被恢复默认值8192）
修改方法2：vim /etc/sysctl.conf
注意添加的内容：
fs.inotify.max_user_watches=99999999（你想设置的值，此方法修改后重启linux，max_user_watches值不会恢复默认值8192）
重新启动 lsyncd ：service lsyncd restart
查看 lsyncd 状态 ：/etc/init.d/lsyncd status
显示：lsyncd (pid 9943) 正在运行...
问题解决。
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