【集群实战】sersync

1. sersync介绍

  • sersync功能:
    • 实时同步;
  • sersync组成:
    • sersync==inotify+rsync
    • inotify: 监控某个目录下面"文件/目录"是否发生变化;
  • sersync工作原理:
    • 由inotify服务监控目录,当目录/文件发生变化时触发rsync服务进行推送,完成数据同步;

2. 部署流程

参照https://www.cnblogs.com/zoe233/p/12035383.html的部署过程。
注意:部署过程中将inotify监听服务和rsync同步数据的过程的脚本/server/scripts/inotifywait_nfs_to_backup.sh

通过/etc/init.d/syncd脚本加入了chkconfig开机自启动服务,可以通过/etc/init.dsyncd [start|stop]启动或关闭服务。

为了避免冲突,将相关所有服务关闭:

chkconfig syncd off 
/etc/init.d/syncd stop

  

2.1 安装sersync

上传sersync安装包到NFS服务端指定目录下。

一般使用rz命令上传,由于secureCRT的transfer命令在mac上出现问题,使用scp命令传输文件。

scp `pwd`/sersync_installdir_64bit.zip root@192.168.0.31:/application

在nfs-31主机上进行操作:

# 创建目录
[root@nfs-31 /]# mkdir /application -p

# 等待rz或scp上传的sersync安装压缩包
[root@nfs-31 application]# ls
sersync_installdir_64bit.zip

# uzip解压zip文件
[root@nfs-31 application]# unzip ./sersync_installdir_64bit.zip 
Archive:  ./sersync_installdir_64bit.zip
   creating: sersync_installdir_64bit/
   creating: sersync_installdir_64bit/sersync/
   creating: sersync_installdir_64bit/sersync/bin/
  inflating: sersync_installdir_64bit/sersync/bin/sersync  
   creating: sersync_installdir_64bit/sersync/conf/
  inflating: sersync_installdir_64bit/sersync/conf/confxml.xml  
   creating: sersync_installdir_64bit/sersync/logs/

# 将sersync目录移动到/application下
[root@nfs-31 application]# ls
sersync_installdir_64bit  sersync_installdir_64bit.zip
[root@nfs-31 application]# cd sersync_installdir_64bit
[root@nfs-31 sersync_installdir_64bit]# ls
sersync
[root@nfs-31 sersync_installdir_64bit]# mv ./sersync/ /application/
[root@nfs-31 sersync_installdir_64bit]# ls
[root@nfs-31 sersync_installdir_64bit]# cd ..
[root@nfs-31 application]# ls
sersync  sersync_installdir_64bit  sersync_installdir_64bit.zip

2.2 为/application/sersync/bin下的命令增加执行权限

[root@nfs-31 bin]# ll /application/sersync/bin
total 1768
-rw-r--r-- 1 root root 1810128 Oct 26  2011 sersync
[root@nfs-31 bin]# chmod +x /application/sersync/bin/sersync

2.3 将sersync命令创建软链接到/sbin目录下

[root@nfs-31 sersync]# ln -s /application/sersync/bin/sersync /sbin/
[root@nfs-31 sbin]# ll /sbin/sersync
lrwxrwxrwx 1 root root 32 Dec 13 19:04 /sbin/sersync -> /application/sersync/bin/sersync

2.4 修改sersync配置文件(/application/sersync/conf/confxml.xml)

配置sersync之前,先单独使用rsync服务推送一次,确定rsync服务正常以及各项参数的准确。

[root@nfs-31 conf]# cat confxml.xml -n
     1  <?xml version="1.0" encoding="ISO-8859-1"?>
     2  <head version="2.5">
     3      <host hostip="localhost" port="8008"></host>
     4      <debug start="false"/>
     5      <fileSystem xfs="false"/>
     6      <filter start="false">  # 过滤功能。默认是false,改成true即可启动
     7          <exclude expression="(.*).svn"></exclude>
     8          <exclude expression="(.*).gz"></exclude>
     9          <exclude expression="^info/*"></exclude>
    10          <exclude expression="^static/*"></exclude>
    11      </filter>
    12      <inotify>  # 监控的事件的属性,和inotify -e 参数类似;通过修改true or false,指定事件类型
    13          <delete start="true"/>
    14          <createFolder start="true"/>
    15          <createFile start="false"/>
    16          <closeWrite start="true"/>
    17          <moveFrom start="true"/>
    18          <moveTo start="true"/>
    19          <attrib start="false"/>
    20          <modify start="false"/>
    21      </inotify>
    22
    23      <sersync>  # 同步的部分
    24          <localpath watch="/opt/tongbu">   # 同步的源,目录
    25              <remote ip="127.0.0.1" name="tongbu1"/>   # ip是推送的机器的ip,name是rsync推送指定的模块
    26              <!--<remote ip="192.168.8.39" name="tongbu"/>-->
    27              <!--<remote ip="192.168.8.40" name="tongbu"/>-->
    28          </localpath>
    29          <rsync>  # rsync命令的各个参数
    30              <commonParams params="-artuz"/>  # 参数选项
    31              <auth start="false" users="root" passwordfile="/etc/rsync.pas"/>   # 连接用户和用户的指定密码文件
    32              <userDefinedPort start="false" port="874"/><!-- port=874 -->  # 是否指定端口,false使用默认端口873
    33              <timeout start="false" time="100"/><!-- timeout=100 -->  # 超时设置
    34              <ssh start="false"/>
    35          </rsync>
    36          <failLog path="/tmp/rsync_fail_log.sh" timeToExecute="60"/> # 失败日志
<!--default every 60mins execute once--> 37 <crontab start="false" schedule="600"><!--600mins--> # 每600分钟重传 38 <crontabfilter start="false"> # 定时任务排除 39 <exclude expression="*.php"></exclude> 40 <exclude expression="info/*"></exclude> 41 </crontabfilter> 42 </crontab> 43 <plugin start="false" name="command"/> 44 </sersync> 45 46 <plugin name="command"> 47 <param prefix="/bin/sh" suffix="" ignoreError="true"/> <!--prefix /opt/tongbu/mmm.sh suffix--> 48 <filter start="false"> 49 <include expression="(.*).php"/> 50 <include expression="(.*).sh"/> 51 </filter> 52 </plugin> 53 54 <plugin name="socket"> 55 <localpath watch="/opt/tongbu"> 56 <deshost ip="192.168.138.20" port="8009"/> 57 </localpath> 58 </plugin> 59 <plugin name="refreshCDN"> 60 <localpath watch="/data0/htdocs/cms.xoyo.com/site/"> 61 <cdninfo domainname="ccms.chinacache.com" port="80" username="xxxx" passwd="xxxx"/> 62 <sendurl base="http://pic.xoyo.com/cms"/> 63 <regexurl regex="false" match="cms.xoyo.com/site([/a-zA-Z0-9]*).xoyo.com/images"/> 64 </localpath> 65 </plugin> 66 </head>

修改相应配置:

    22
    23      <sersync>  # 同步的部分
    24          <localpath watch="/data">   # 同步的源,目录
    25              <remote ip="192.168.0.41" name="nfsbackup"/>   # ip是推送的机器的ip,name是rsync推送指定的模块
    28          </localpath>
    29          <rsync>  # rsync命令的各个参数
    30              <commonParams params="-az"/>  # 参数选项
    31              <auth start="true" users="rsync_backup" passwordfile="/etc/rsync.password"/>   # 连接用户和用户的指定密码文件
    32              <userDefinedPort start="false" port="874"/><!-- port=874 -->  # 是否指定端口,false使用默认端口873
    33              <timeout start="true" time="100"/><!-- timeout=100 -->  # 超时设置
    34              <ssh start="false"/>
    35          </rsync>
    36          <failLog path="/tmp/rsync_fail_log.sh" timeToExecute="60"/> # 失败日志      

2.5 启动sersync服务

sersync命令参数说明:

[root@nfs-31 ~]# sersync -h  
set the system param
execute:echo 50000000 > /proc/sys/fs/inotify/max_user_watches  # 调整了监控文件的数量和事件的数量
execute:echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
_______________________________________________________
参数-d:启用守护进程模式
参数-r:在监控前,将监控目录与远程主机用rsync命令推送一遍
c参数-n: 指定开启守护线程的数量,默认为10个
参数-o:指定配置文件,默认使用confxml.xml文件
参数-m:单独启用其他模块,使用 -m refreshCDN 开启刷新CDN模块
参数-m:单独启用其他模块,使用 -m socket 开启socket模块
参数-m:单独启用其他模块,使用 -m http 开启http模块
不加-m参数,则默认执行同步程序
______________________________________________________________


服务启动后,将过程文件中rsync服务命令粘贴出来单独执行一遍,检验配置文件信息是否填写正确。

[root@nfs-31 ~]# sersync -rdo /application/sersync/conf/confxml.xml 
set the system param
execute:echo 50000000 > /proc/sys/fs/inotify/max_user_watches
execute:echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
option: -r      rsync all the local files to the remote servers before the sersync work
option: -d      run as a daemon
option: -o      config xml name:  /application/sersync/conf/confxml.xml
daemon thread num: 10
parse xml config file
host ip : localhost     host port: 8008
daemon start,sersync run behind the console 
use rsync password-file :
user is rsync_backup
passwordfile is         /etc/rsync.password
config xml parse success
please set /etc/rsyncd.conf max connections=0 Manually
sersync working thread 12  = 1(primary thread) + 1(fail retry thread) + 10(daemon sub threads) 
Max threads numbers is: 22 = 12(Thread pool nums) + 10(Sub threads)
please according your cpu ,use -n param to adjust the cpu rate
------------------------------------------
rsync the directory recursivly to the remote servers once
working please wait...
execute command: cd /data && rsync -az -R --delete ./  --timeout=100 rsync_backup@192.168.0.41::nfsbackup --password-file=/etc/rsync.password >/dev/null 2>&1 
run the sersync: 
watch path is: /data

2.6 查看sersync状态

[root@nfs-31 ~]# ps -ef|grep sersync|grep -v grep
root     20924     1  0 21:33 ?        00:00:00 sersync -rdo /application/sersync/conf/confxml.xml

2.7 开机自启动sersync服务

[root@nfs-31 ~]# tail -2 /etc/rc.local
# sersync start onboot sersync -rdo /application/sersync/conf/confxml.xml

注意:sersync服务的开机自启动和inotify的开机自启动最好不要冲突,只选其一。

原文地址:https://www.cnblogs.com/zoe233/p/12037417.html