Linux伺服器雙機備份策略

機器：伺服器A、備份伺服器B
作業系統：Redhat
備份策略：rsync+crontab，定時同步。好處是增量備份，備份包括了檔案許可權、日期等資訊，便於機器之間的快速恢複切換。

Server A:
/etc/rsyncd.conf
uid = root
gid = root
use chroot = no
max connections = 4
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsyncd.log

[share]
path = /home/filetobackup/
ignore errors
read only = yes
list = yes
auth users = username
secrets file = /etc/password.pas

/etc/password.pas(許可權400)
username:password

Server B:
backup.sh
#!/bin/bash
DATE=`date +%w`
/usr/bin/rsync -vzrtopg --progress --delete --password-file=/root/script/password.pas username@ServerA_IP::share /home/backuppath >/root/logs/rsync.$DATE

/root/script/password.pas(許可權400)
password

ServerB周一到周五淩晨1點執行指令碼定時同步
Crontab：
0 1 * * 2-6 /root/script/backup.sh