NIS Server DR SOP

NIS Server DR SOP

  

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    /         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 �Cjmxvf sh1-etc.date.tar.bz2 �CC /etc/ # tar �Cjmxvf sh1-bind.date.tar.bz2 �CC /var/bind/ # tar �Cjmxvf sh1- nis .date.tar.bz2 �CC /var/yp/ # tar �Cjmxvf sh1- ldap .date.tar.bz2 �CC /var/ldap/

    

五． 启动 nis server 与 autofs

# ypinit �Cm 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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