NIS Server DR SOP<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

  

NIS 服务器系统灾难恢复

方法：一

一． 确定关键的文件

l          主配置目录 (/etc)

l          DNS 域信息 (/var/bind)

l          NIS/NIS+ 文件和配置 (/var/yp)

l          Lightweight Directory Access Protocol (LDAP) 服务器数据（/var/ldap）

二．  为不同的目录创建经过 tar 处理和压缩的备份

#!/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..."

    

三．安装nis服务器操作系统并配置网络

  安装操作系统时我们必须清楚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   /         <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />3.91G       0  --  805

           /dev/dsk/c0t0d0s1   à   swap     3.91G    806  --  1611

           /dev/dsk/c0t0d0s3   à   /home    60.53G   1612  --  14086

四．挂载backup server 恢复目录；

 

# 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．启动nis server与 autofs

# ypinit –m

In order for NIS to operate successfully, we have to construct a list of

the NIS servers. Please continue to add the names for YP servers in order

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．              验证nis server是否正常启动，automount挂载目录是否正确

 

七．完成事故报告

对事故作记录，总结事故发生原因，避免产生同样的问题。

 

方法：二

一． 准备1块与原使用盘相同的硬盘

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．定期运行脚本backupfilesys

脚本backupfilesys 内容

#!/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

$UFSDUMP 0f - /dev/dsk/c0t0d0s0 | (cd /backup/root;$UFSRESTORE rf -)

$UFSDUMP 0f - /dev/dsk/c0t0d0s3 | (cd /backup/home;$UFSRESTORE rf -)

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．更换硬盘，查看nis server是否正常工作

 

四．完成事故报告

对事故作记录，总结事故发生原因，避免产生同样的问题。

 

 

Reference   

 

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