Linux - LAMP + DNS + NFS + RSYNC

　在前面实验已经做了关于LAMP + DNS + NFS,现在在此基础上再做NFS备份机制

1> 在NFS主机配置基于rsync daemon 实现 sersync

  323  wget https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/sersync/sersync2.5.4_64bit_binary_stable_final.tar.gz
  324  tar xf sersync2.5.4_64bit_binary_stable_final.tar.gz
  325  cp -a GNU-Linux-x86 /usr/local/sersync
  326  echo 'PATH=/usr/local/sersync:$PATH' > /etc/profile.d/sersync.sh
  327  source /etc/profile.d/sersync.sh

  329  cp /usr/local/sersync/confxml.xml{,.bak}
  330  vim /usr/local/sersync/confxml.xml （高亮部分重点观察）
    <inotify>  
        <delete start="true"/>
        <createFolder start="true"/>
        <createFile start="false"/>
        <closeWrite start="true"/>
        <moveFrom start="true"/>
        <moveTo start="true"/>
        <attrib start="true"/>
        <modify start="false"/>
    </inotify>

    <sersync>
        <localpath watch="/data/wordpress/wp-content">
            <remote ip="10.0.0.10" name="backup/"/>

  <rsync>
  <commonParams params="-artuz"/>
  <auth start="true" users="rsyncuser" passwordfile="/etc/rsync.pas"/>

[23:50:23 root@nfs wp-content]#cat /etc/rsync.pas
123456

# chmon 600 防止其他用户看到密码
[23:50:26 root@nfs wp-content]#ll -a /etc/rsync.pas
-rw------- 1 root root 7 Jul  5 22:36 /etc/rsync.pas

 

2> 备份主机配置

[23:20:59 root@centos8 ~]#yum -y install rsync-daemon
[23:44:52 root@centos8 backup]#cat /etc/rsyncd.conf
# /etc/rsyncd: configuration file for rsync daemon mode

# See rsyncd.conf man page for more options.

# configuration example:

# uid = nobody
# gid = nobody
# use chroot = yes
# max connections = 4
# pid file = /var/run/rsyncd.pid
# exclude = lost+found/
# transfer logging = yes
# timeout = 900
# ignore nonreadable = yes
# dont compress   = *.gz *.tgz *.zip *.z *.Z *.rpm *.deb *.bz2

# [ftp]
#        path = /home/ftp
#        comment = ftp export area
#        


uid = root
gid = root
max connections = 0
ignore errors
exclude = lost+found/
log file = /var/log/rsyncd.log
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsyncd.lock
reverse lookup = no

[backup]  -> 这里即上面NFS主机xml配置文件remote的name
path = /data/backup/ ->真实路径
comment = backup dir
read only = no
auth users = rsyncuser -> 访问者
secrets file = /etc/rsync.pas ->访问密码

　[23:53:45 root@centos8 backup]#cat /etc/rsync.pas
  rsyncuser:123456

  [23:55:36 root@centos8 backup]#ll -a /etc/rsync.pas
  -rw------- 1 root root 17 Jul 5 23:42 /etc/rsync.pas

 

  [23:30:03 root@centos8 ~]#systemctl enable --now rsyncd.service
  Created symlink /etc/systemd/system/multi-user.target.wants/rsyncd.service → /usr/lib/systemd/system/rsyncd.service.

 

  [23:43:06 root@centos8 backup]#systemctl restart rsyncd
  [23:43:19 root@centos8 backup]#ss -ntl
  State Recv-Q Send-Q Local Address:Port Peer Address:Port
  LISTEN 0 5 0.0.0.0:873 0.0.0.0:*
  LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
  LISTEN 0 5 [::]:873 [::]:*
  LISTEN 0 128 [::]:22 [::]:*

 

开始测试

[23:46:55 root@nfs wp-content]#sersync2 -dro /usr/local/sersync/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: -d     run as a daemon
option: -r     rsync all the local files to the remote servers before the sersync work
option: -o     config xml name：  /usr/local/sersync/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    rsyncuser
passwordfile is     /etc/rsync.pas
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/wordpress/wp-content && rsync -artuz -R --delete ./ rsyncuser@10.0.0.10::backup/ --password-file=/etc/rsync.pas >/dev/null 2>&1 
run the sersync: 
watch path is: /data/wordpress/wp-content
[23:47:13 root@nfs wp-content]#touch 10.txt
[23:47:20 root@nfs wp-content]#
[23:47:20 root@nfs wp-content]#touch 11.txt
[23:58:29 root@nfs wp-content]#ll /data/wordpress/wp-content/
total 8
-rw-r--r-- 1 root root    0 Jul  5 23:47 10.txt
-rw-r--r-- 1 root root    0 Jul  5 23:47 11.txt
-rw-r--r-- 1 root root    0 Jul  5 22:27 1.txt
-rw-r--r-- 1 root root    0 Jul  5 22:30 3.txt
-rw-r--r-- 1 root root   28 Jan  9  2012 index.php
drwxr-xr-x 4 root root 4096 Jun 15 21:00 languages
drwxr-xr-x 3 root root   55 Jun 15 21:00 plugins
-rw-r--r-- 1 root root    0 Jul  5 22:37 test.txt
drwxr-xr-x 5 root root   88 Jun 15 21:00 themes

=== 备份机


Every 0.5s: ls -l /data/backup/                                                                                                           centos8.3: Mon Jul  5 23:59:33 2021

total 12
-rw-r--r-- 1 root root    0 Jul  5 23:47 10.txt
-rw-r--r-- 1 root root    0 Jul  5 23:47 11.txt
-rw-r--r-- 1 root root    0 Jul  5 23:32 1.txt
-rw-r--r-- 1 root root    0 Jul  5 22:30 3.txt
-rw-r--r-- 1 root root   28 Jan  9  2012 index.php
drwxr-xr-x 4 root root 4096 Jun 15 21:00 languages
drwxr-xr-x 3 root root   55 Jun 15 21:00 plugins
-rw-r--r-- 1 root root    0 Jul  5 22:37 test.txt
drwxr-xr-x 5 root root   88 Jun 15 21:00 themes