| Roles | service | IP | |
|---|---|---|---|
| Master | nfs service, sersync Service | 192.168.31.155 | |
| Slave | rsync service | 192.168.31.150 | |
| Client | 192.168.31.140 |
Shared directory / data / www / web
Mount the directory / mnt
Installation configuration NFS shared directory
1. Install nfs
The server and the client need to install
yum install -y nfs-utils rpcbindNFS-Master、NFS-Slave:
echo '/data/www/web 192.168.31.0/24(rw,sync,all_squash)' >> /etc/exports
systemctl start rpcbind && systemctl start nfs
systemctl enable rpcbind && systemctl enable nfs
并且需要配置防火墙，否则客户端有可能挂载失败，连接不上Configure the firewall release nfs service
firewall-cmd --permanent --add-service=nfs
(Note that first start rpcbind, restart nfs)
Installation Configuration rsync + Sersync
Rsync installed on NFS-Slave end , because we write data on NFS-Master to be backed up to the NFS-Slave server, so we start rsync on NFS-Slave
we /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 = nfsnobody
gid = nfsnobody
port = 873
pid file = /var/rsyncd.pid
log file = /var/log/rsyncd.log
use chroot = no
max connections = 200
read only = false
list = false
fake super = yes
ignore errors
[test_nfs]
path = /test_nfs
auth users = test_nfs
secrets file = /etc/rsync.pass
hosts allow = 192.168.31.0/24systemctl start rsyncd && systemctl enable rsyncd
echo 'test_nfs:zsf123' > /etc/rsync.pass
chmod 600 /etc/rsync.pass
chown nfsnobody:nfsnobody /test_nfs/Log Files /var/log/rsyncd.log
Install and configure keepalived
1. yum install keepalived -y
2. vi /etc/keepalived/keepalived.confMASTER
//全局定义模块
global_defs {
router_id NFS-Master
//运行keepalive机器的标识
}
vrrp_instance VI_1 {
//靠priority 来区别主从,这个不生效
state MASTER
//实例绑定的网卡
interface enp0s31f6
//组ID,值一样为一个组
virtual_router_id 51
//优先级,优先级高的为master
priority 150
//检查时间间隔
advert_int 1
//认证模式为密码认证
authentication {
auth_type PASS
auth_pass zhangshoufu
}
//设置的VIP
virtual_ipaddress {
192.168.1.101
}
}BACKUP
global_defs {
router_id NFS-Slave
}
vrrp_instance VI_1 {
state BACKUP
interface enp0s31f6
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass zhangshoufu
}
virtual_ipaddress {
192.168.1.101
}
}systemctl start keepalived.service start
systemctl stop keepalived.service 停止
systemctl enable keepalived.service boot
Because keepalive keepalive drift mechanism is based on the survival of this service is to determine whether the IP address of the drift, if we are machine down machine, this method can be used directly, but if network problems led to a service unavailable,
Firewall
firewall-cmd --state
firewall-cmd --reload
systemctl start firewalld.service
systemctl stop firewalld.service
Multicast allows firewall vrrp
keepalived multicast address is 224.0.0.18
firewall-cmd --direct --permanent --add-rule ipv4 filter INPUT 0 --in-interface enp0s3 --destination 224.0.0.18 --protocol vrrp -j ACCEPT
If the iptables installed, it must make the appropriate firewall configuration, otherwise there will be brain (split-brain) crack phenomenon
yum install -y wget
332 wget https://rsync.samba.org/ftp/rsync/src/rsync-3.0.7.tar.gz
333 ll
334 mkdir /rsync/
335 ll
336 mv rsync-3.0.7.tar.gz /rsync/
337 ll
338 ll /rsync/
339 cd /rsync/
340 ll
341 tar xzf rsync-3.0.7.tar.gz
342 ls
343 cd rsync-3.0.7
344 ls
345 yum install -y gcc
346 yum -y install perl
347 ./configure --prefix=/usr/local/rsync/
348 make&&make install
349 ll /usr/local/rsync/
open rsync rsync -daemon #
/usr/local/rsync/bin/rsync --daemon --config=/usr/local/rsync/rsyncd.conf
netstat -antp | grep 873
netstat -nulpt| grep rsync
lsof -i:873
Configuring rsync boot
we /etc/rc.local
At the end of plus / usr / local / rsync / bin / rsync --daemon --config = / usr / local / rsync / rsyncd.conf
Download sersync
mkdir -p /application/tools/
cd /application/tools/
tar xzf sersync2.5.4_64bit_binary_stable_final.tar.gz
mv GNU-Linux-x86 /usr/local/sersync
Configuration sersync
cp confxml.xml confxml.xml.$(date +%F)
you seq
Open sersync daemon to synchronize data
Start command
/usr/local/sersync/sersync2 -d -r -o /usr/local/sersync/confxml.xml
| Sersync parameters | Explanation |
|---|---|
| ./sersync -d | -d parameter: background service, the use of -r parameter usually local to the remote synchronous whole again, run this parameter to start the daemon in the background and real-time synchronization; synchronization, -d and -r parameter in first overall often used in combination |
| ./sersync -o xx.xml | Specify the -o parameter: You can specify a number of different profiles, in order to achieve multi-process multi-instance sersync data synchronization |
| ./sersync -r | Do not mention Note: If the filter is set, i.e., in the xml file, filter is true, the parameter is temporarily unavailable -r overall synchronization; |
sersync is a software, a script execution time corresponding his promoter, not a command ,, so there is no effect added to /etc/rc.local
Add a script to monitor whether the normal operation of sersync
#!/bin/sh
sersync="/usr/local/sersync/sersync2"
confxml="/usr/local/sersync/confxml.xml"
status=$(ps aux | grep 'sersync2' | grep -v 'grep' | wc -l)
if [ $status -eq 0 ];
then
$sersync -d -r -o $confxml &
else
exit 0;
fichmod + x /usr/local/sersync/check_sersync.sh # Add the script execution permissions
vi / etc / crontab # edit, add the following line in the final
/. 5 * * * the root /usr/local/sersync/check_sersync.sh> / dev / null 2>. 1 & # script executed once every 5 minutes
service crond reload # reload service
Node Name Review:
hostname Master
unman -nHostname resolution:
cat /etc/hosts