NIS Server DR SOP
NIS 服務器系統災難恢復
方法：一
l 主配置目錄 (/etc)
l DNS 域信息 (/var/bind)
l NIS/NIS+ 文件和配置 (/var/yp)
l Lightweight Directory Access Protocol (LDAP) 服務器數據（/var/ldap）
二． 爲不同的目錄創建經過 tar 處理和壓縮的備份
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#!/bin/bash
DATE=`date +%Y%m%d.%H%M`
HOST=`sh1`
TEMP=/mnt/backup
echo "Preparing backup..."
cd /etc
tar cf - ./* |bzip2 -9 - >$TEMP/$HOST-etc.$DATE.tar.bz2
cd /var/bind
tar cf - ./* |bzip2 -9 - >$TEMP/$HOST-bind.$DATE.tar.bz2
cd /var/yp
tar cf - ./* |bzip2 -9 - >$TEMP/$HOST-nis.$DATE.tar.bz2
cd /var/ldap
tar cf - ./* |bzip2 -9 - >$TEMP/$HOST-ldap.$DATE.tar.bz2
echo "complete backup..."
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三．安裝nis服務器操作系統並配置網絡
安裝操作系統時我們必須清楚backup server sh1的以下一些信息:
OS版本信息: SUNOS 5.8 Generic_117350-36
Partition信息: /dev/dsk/c0t0d0s0 à / 3.91G 0 -- 805
/dev/dsk/c0t0d0s1 à swap 3.91G 806 -- 1611
/dev/dsk/c0t0d0s3 à /home 60.53G 1612 -- 14086
四．掛載backup server 恢復目錄；
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# cd /mnt/backup
# tar –jmxvf sh1-etc.date.tar.bz2 –C /etc/ # tar –jmxvf sh1-bind.date.tar.bz2 –C /var/bind/
# tar –jmxvf sh1-nis.date.tar.bz2 –C /var/yp/
# tar –jmxvf sh1-ldap.date.tar.bz2 –C /var/ldap/ |
五．啓動nis server與 autofs
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# ypinit –m
In order for
the
of preference, one per line. When you are done with the list, type a
<control D> or a return on a line by itself.
next host to add: sh1
next host to add: ^D
The current list of yp servers looks like this:
sh1
Is this correct? [y/n: y] y
Installing the YP database will require that you answer a few questions.
Questions will all be asked at the beginning of the procedure.
Do you want this procedure to quit on non-fatal errors? [y/n: n] n
OK, please remember to go back and redo manually whatever fails. If you
don't, some part of the system (perhaps the yp itself) won't work.
# /usr/lib/netsvc/yp/ypstart
# cd /var/yp; /usr/ccs/bin/make
# /etc/init.d/autofs start |
六． 驗證nis server是否正常啓動，automount掛載目錄是否正確
七．完成事故報告
對事故作記錄，總結事故發生原因，避免產生同樣的問題。
方法：二
一． 準備1塊與原使用盤相同的硬盤
Partition信息: /dev/dsk/c0t1d0s0 à / 7.8G 0 -- 1611
/dev/dsk/c0t1d0s1 à swap 3.91G 1611 -- 2416
/dev/dsk/c0t1d0s3 à /home 56.53G 2416 -- 14086
二．定期運行腳本backupfilesys
腳本backupfilesys 內容
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#!/bin/bash
WORKDIR=/u/sysadmin/backup/sh1
LOGFILE=${WORKDIR}/log/`date +%Y%m%d`.log
UFSDUMP=/usr/sbin/ufsdump
UFSRESTORE=/usr/sbin/ufsrestore
exec > $LOGFILE 2>&1
mount -F ufs /dev/dsk/c0t1d0s0 /backup/root
mount -F ufs /dev/dsk/c0t1d0s3 /backup/home
$UFSDUMP
$UFSDUMP
umount /backup/root
umount /backup/home
fsck -y /dev/rdsk/c0t1d0s0
fsck -y /dev/rdsk/c0t1d0s3
installboot /usr/platform/sun4u/lib/fs/ufs/bootblk /dev/rdsk/c0t1d0s0
exit |
三．更換硬盤，查看nis server是否正常工作
四．完成事故報告
對事故作記錄，總結事故發生原因，避免產生同樣的問題。
Reference
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