sersync其实是利用inotify和rsync两种软件技术来实现数据实时同步功能的,inotify是用于监听sersync所在服务器上的文件变化,结合rsync软件来进行数据同步,将数据实时同步给客户端服务器。
工作过程:在同步主服务器上开启sersync,负责监听文件系统的变化,然后调用rsync命令把更新的文件同步到目标服务器上,主服务器上安装sersync软件,目标服务器上安装rsync服务。
1、客户端配置
?
[root@localhost2 ~]
# cat /etc/rsyncd.conf
##created by cai at 2018-2-24
uid=
rsync
gid=
rsync
use chroot = no
max connections = 200
timeout = 300
pid
file
=
/var/run/rsyncd
.pid
lock
file
=
/var/run/rsync
.lock
log
file
=
/var/log/rsyncd
.log
[data]
path =
/data/
ignore errors
read
only =
false
list =
false
hosts allow = 192.168.181.128:52000
/24
hosts deny = 0.0.0.0
/32
auth
users
= rsync_body
secrets
file
=
/etc/rsync
.password
[root@localhost2 ~]
# ls -ld /data/
drwxrwxrwx. 3
rsync
rsync
4096 feb 24 16:58
/data/
[root@localhost2 ~]
# cat /etc/rsync.password
rsync_body:admin
[root@localhost2 ~]
# ls -ld /etc/rsync.password
-rw-------. 1 root root 17 feb 24 16:26
/etc/rsync
.password
#600权限
[root@localhost2 ~]
# netstat -lntup| grep "rsync"
tcp 0 0 0.0.0.0:873 0.0.0.0:* listen 1497
/rsync
tcp 0 0 :::873 :::* listen 1497
/rsync
2、主服务器配置
?
[root@localhost1 ~]
# cat /etc/rsync.password
admin
[root@localhost1 ~]
# ls -ld /etc/rsync.password
-rw------- 1 root root 6 feb 24 03:54
/etc/rsync
.password
3、安装sersync服务
采用inotify来对文件进行监控,当监控到文件有文件发生改变的时候,就会调用rsync实现触发式实时同步!
安装sersync(注意sersync是工作在rsync的源服务器上,也就是客户端上)
?
[root@salt-client01 ~]
# cd /usr/local/src/
[root@salt-client01 src]
# tar -zxvf sersync2.5.4_64bit_binary_stable_final.tar.gz -c /usr/local/
gnu-linux-x86/
gnu-linux-x86
/sersync2
gnu-linux-x86
/confxml
.xml
[root@salt-client01 src]
# cd /usr/local/
[root@salt-client01
local
]
# mv gnu-linux-x86 sersync
[root@salt-client01
local
]
# cd sersync/
[root@salt-client01 sersync]
# mkdir conf bin log
[root@salt-client01sersync]
# mv confxml.xml conf
[root@salt-client01sersync]
# mv sersync2 bin/sersync
修改配置文件
?
***********************************30行开始******************************
<commonparams params=
"-artuz"
/>
#-artuz为rsync同步时的参数
<authstart=
"true"
users
=
"rsync的虚拟用户名(rsync_backup)"
passwordfile=
"rsync的密码文件"
/>
<userdefinedport start=
"true"
port=
"873"
/><!-- port=874 -->
<timeout start=
"false"
time
=
"100"
/><!--timeout=100 -->
<sshstart=
"false"
/>
************************************第36行***********************************
<faillogpath=
"自己定义的log文件夹(/usr/local/sersync/log)rsync_fail_log.sh"
timetoexecute=
"60"
/><!--defaultevery 60mins execute once-->
*******************************************************************************
*注:若有多个目录备份可以穿件多个配置文件在启动时的-o参数中添加即可
[root@salt-client01 conf]
# diff confxml.xml confxml.xml.bak
24,25c24,25
< <localpath
watch
=
"/data/"
>
#data就是本地需要同步的文件夹到服务器端的目录
< <remote ip=
"192.168.91.166"
name=
"data"
/>
#data (server的模块名)是rsync 服务端的文件夹,也就是推送到服务器端的目标文件夹,可以配置多个,
---
> <localpath
watch
=
"/opt/tongbu"
>
> <remote ip=
"127.0.0.1"
name=
"tongbu1"
/>
31c31
< <auth start=
"true"
users
=
"rsync_body"
passwordfile=
"/etc/rsync.password"
/>
#true 才能生效,rsync_body同步时候虚拟账号,后面是密码文件
---
> <auth start=
"false"
users
=
"root"
passwordfile=
"/etc/rsync.pas"
/>
33c33
< <timeout start=
"true"
time
=
"100"
/><!-- timeout=100 -->
#true 才能生效
---
> <timeout start=
"false"
time
=
"100"
/><!-- timeout=100 -->
36c36
< <faillog path=
"/usr/local/sersync/log/rsync_fail_log.sh"
timetoexecute=
"60"
/><!--default every 60mins execute once-->
#检测rsync进程判断,没有自动启
---
> <faillog path=
"/tmp/rsync_fail_log.sh"
timetoexecute=
"60"
/><!--default evepry 60mins execute once-->
启动sersync
?
[root@salt-client01 src]
# echo 'export path=$path:/usr/local/sersync/bin'>>/etc/profile #声明环境变量
[root@salt-client01 src]
# source /etc/profile
[root@salt-client01 src]
# sersync2 -r -d -o /usr/local/sersync/conf/confxml.xml #启动
set
the system param
execute:
echo
50000000 >
/proc/sys/fs/inotify/max_user_watches
execute:
echo
327679 >
/proc/sys/fs/inotify/max_queued_events
parse the
command
param
option: -r
rsync
all the
local
files to the remote servers before the sersync work
option: -d run as a daemon
option: -o config xml name:
/usr/local/sersync/conf/confxml
.xml
daemon thread num: 10
parse xml config
file
host ip : localhost host port: 8008
daemon start,sersync run behind the console
use
rsync
password-
file
:
user is rsync_body
passwordfile is
/etc/rsync
.password
config xml parse success
please
set
/etc/rsyncd
.conf max connections=0 manually
sersync working thread 12 = 1(primary thread) + 1(fail retry thread) + 10(daemon sub threads)
max threads numbers is: 22 = 12(thread pool nums) + 10(sub threads)
please according your cpu ,use -n param to adjust the cpu rate
------------------------------------------
rsync
the directory recursivly to the remote servers once
working please wait...
execute
command
:
cd
/data
&&
rsync
-artuz -r --delete ./ --timeout=100 rsync_body@192.168.91.166::data --password-
file
=
/etc/rsync
.password >
/dev/null
2>&1
run the sersync:
watch
path is:
/data
#此时可以看出sersync已经启动成功了
#检测脚本
[root@salt-client01 log]
# pwd
/usr/local/sersync/log
[root@salt-client01 log]
# vim rsync_fail_log.sh
[root@salt-client01 log]
# chmod +x rsync_fail_log.sh
[root@salt-client01 ~]
# cat /usr/local/sersync/log/rsync_fail_log.sh
#!/bin/bash
#purpose: check sersync whether it is alive
#author: cai meng zhi
sersync=
"/usr/local/sersync/bin/sersync2"
conf_file=
"/usr/local/sersync/conf/confxml.xml"
status=$(
ps
aux |
grep
'sersync2'
|
grep
-
v
'grep'
|
wc
-l)
if
[ $status -
eq
0 ];
then
$sersync -d -r -o $conf_file &
else
exit
0;
fi
脚本写好以后,添加到计划任务中去
*
/1
* * * *
/bin/bash
/usr/local/sersync/log/rsync_fail_log
.sh >
/dev/null
2>&1
测试同步:
客户端新增文件
[root@salt-client01 data]
# cp /etc/passwd 192.168.91.156.passwd
[root@salt-client01 data]
# ll
total 4
-rw-r--r-- 1 root root 1928 nov 10 18:15 192.168.91.156.
passwd
-rw-r--r-- 1 root root 0 nov 10 17:27 3
服务端检测
[root@salt-master data]
# cd /data/
[root@salt-master data]
# ll
total 8
-rw-r--r-- 1 root root 1928 nov 10 18:15 192.168.91.156.
passwd
#说明已经同步过来了
-rw-r--r-- 1 root root 0 nov 10 17:27 3
drwxr-xr-x 2 root root 4096 nov 10 17:27 data
客户端测试删除
[root@salt-client01 data]
# rm rf 192.168.91.156.passwd
rm
: cannot remove `rf': no such
file
or directory
rm
: remove regular
file
`192.168.91.156.
passwd
'? y
[root@salt-client01 data]
# ll
total 0
-rw-r--r-- 1 root root 0 nov 10 17:27 3
[root@salt-client01 data]
#
服务器端:
[root@salt-master data]
# ll
total 4
-rw-r--r-- 1 root root 0 nov 10 17:27 3
#说明已经删除掉了
drwxr-xr-x 2 root root 4096 nov 10 17:27 data
4、常见错误汇总
?
错误一:
@error: auth failed on module xxxxx
rsync
: connection unexpectedly closed(90 bytes
read
so far)
rsync
error: error
in
rsync
protocoldata stream (code 12) at io.c(150)
说明:这是因为密码设置错了,无法登入成功,检查一下
rsync
.
pwd
,看客服是否匹配。还有服务器端没启动
rsync
服务也会出现这种情况。
错误二:
password
file
must not beother-accessible
continuing without password
file
password:
说明:这是因为rsyncd.pwdrsyncd.sec的权限不对,应该设置为600。如:chmod600 rsyncd.
pwd
错误三:
@error: chroot failed
rsync
: connection unexpectedly closed(75 bytes
read
so far)
rsync
error: error
in
rsync
protocoldata stream (code 12) at io.c(150)
说明:这是因为你在
rsync
.conf中设置的 path 路径不存在,要新建目录才能开启同步
错误四:
rsync
: failed to connect to218.107.243.2: no route to host (113)
rsync
error: error
in
socket io (code10) at clientserver.c(104) [receiver=2.6.9]
说明:防火墙问题导致,这个最好先彻底关闭防火墙,排错的基本法就是这样,无论是s还是c,还有ignore errors选项问题也会导致
错误五:
@error: access denied to www fromunknown (192.168.1.123)
rsync
: connection unexpectedly closed(0 bytes received so far) [receiver]
rsync
error: error
in
rsync
protocoldata stream (code 12) at io.c(359)
说明:此问题很明显,是配置选项hostallow的问题,初学者喜欢一个允许段做成一个配置,然后模块又是同一个,致使导致
错误六:
rsync
error: received sigint,sigterm, or sighup (code 20) at
rsync
.c(244) [generator=2.6.9]
rsync
error: received sigusr1 (code19) at main.c(1182) [receiver=2.6.9]
说明:导致此问题多半是服务端服务没有被正常启动,到服务器上去查查服务是否有启动,然后查看下
/var/run/rsync
.pid 文件是否存在,最干脆的方法是杀死已经启动了服务,然后再次启动服务或者让脚本加入系统启动服务级别然后
shutdown
-r now服务器
错误七:
rsync
:
read
error: connection resetby peer (104)
rsync
error: error
in
rsync
protocoldata stream (code 12) at io.c(604) [sender=2.6.9]
说明:原数据目录里没有数据存在
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
原文链接:https://www.cnblogs.com/caicairui/archive/2018/02/26/8472888.html
原创文章,作者:TEQPQ,如若转载,请注明出处:http://www.wangzhanshi.com/n/6600.html