在IDC的租用的一臺遠程服務器要到期了準備下架了，歸還設備了。下架前必須清除數據，保障公司原數據安全不外泄。

1、備份數據（通過rsync、ftp等方式備份，在此就不詳細介紹了）

2、關閉運行服務

3、卸載并格式化非系統分區

4、刪除系統分區配置及文件

以下是過程：

1、通過ssh遠程登錄服務器，查看運行服務：

[root@fdcservers?local]#?chkconfig?--list|grep?":on" blk-availability0:off1:on2:off3:off4:off5:off6:off cpuspeed???????0:off1:on2:off3:off4:off5:off6:off crond??????????0:off1:off2:on3:on4:on5:on6:off haldaemon??????0:off1:off2:on3:on4:on5:on6:off ip6tables??????0:off1:off2:on3:on4:on5:on6:off iptables???????0:off1:off2:on3:on4:on5:on6:off lvm2-monitor???0:off1:on2:off3:off4:off5:off6:off messagebus?????0:off1:off2:on3:on4:on5:on6:off mysql??????????0:off1:off2:on3:on4:on5:on6:off network????????0:off1:off2:on3:on4:on5:on6:off nginx??????????0:off1:off2:on3:on4:on5:on6:off open***????????0:off1:off2:on3:on4:on5:on6:off php-fpm????????0:off1:off2:on3:on4:on5:on6:off sendmail???????0:off1:off2:on3:on4:on5:on6:off snmpd??????????0:off1:off2:on3:on4:on5:on6:off sshd???????????0:off1:off2:on3:on4:on5:on6:off udev-post??????0:off1:on2:off3:off4:off5:off6:off vsftpd?????????0:off1:off2:on3:on4:on5:on6:off xinetd?????????0:off1:off2:off3:on4:on5:on6:off

可以看到，本臺服務器是lnmp服務器，開啟了nginx mysql vsftpd php-fpm open*** 等服務。當然，也可以用ps -aux來查看當時運行服務。

2、停止相關運行服務

[root@fdcservers?local]#?service?nginx?stop [root@fdcservers?local]#?service?crond?stop [root@fdcservers?local]#?service?php-fpm?stop [root@fdcservers?local]#?service?mysqld?stop [root@fdcservers?local]#?service?vsftp?stop [root@fdcservers?local]#?service?xinetd?stop

3、卸載并格式化非系統分區

查看分區掛載情況

[root@fdcservers?local]df Filesystem??????1K-blocks???????Used??Available?Use%?Mounted?on /dev/sda3??????2879722992??931723820?1801710996??35%?/ tmpfs?????????????8162448??????????0????8162448???0%?/dev/shm /dev/sda1??????????289293??????38827?????235106??15%?/boot /dev/sdc1??????2884152536?1133708020?1603931264??42%?/data2 /dev/sdb1??????2884152536?1513359216?1224280068??56%?/data3 /dev/sdd1??????2884152536?1489356388?1248282896??55%?/data4

可以看到，/data3 /data2 /data4 分別掛載了/dev/sdb1 /dev/sdc1 /dev/sdd1 幾個分區。也可以用mount查看，另外/etc/fstab里面有啟動硬盤加載配置。

用umount卸載分區，也可以umount /dev/sdd1 /dev/sdb1 /dev/sdc1

[root@fdcservers?local]umount?/data4? [root@fdcservers?local]umount?/data3? [root@fdcservers?local]#?umount?/data2 umount:?/data2:?device?is?busy.(In?some?cases?useful?info?about?processes?that?usethe?device?is?found?by?lsof(8)?or?fuser(1))

有問題，/data2 分區文件在使用中，無法卸載，用lsof查看一下占用。

[root@fdcservers?~]#?lsof?-n?|grep?"data2" bash??????28340??????root??cwd???????DIR????????????????8,3?????4096?????260289?/data2 nginx??????6349?????www???35r??????REG???????????????8,33??280396246???79704097?/data2/www/test1.down.com/9000043.zip nginx??????6349?????www???38r??????REG???????????????8,33??374411746???79704287?/data2/www/test1.down.com/9000993.zip nginx??????6349?????www???60r??????REG???????????????8,33??320267112???79704297?/data2/www/test1.down.com/9001043.zip nginx??????6350?????www???35r??????REG???????????????8,33??481860747???79704549?/data2/www/test1.down.com/9002333.zip nginx??????6351?????www???45r??????REG???????????????8,33??566018961???79704460?/data2/www/test1.down.com/9001882.zip nginx??????6352?????www???23r??????REG???????????????8,33??937357770???79704129?/data2/www/test1.down.com/9000203.zip nginx??????6352?????www???29r??????REG???????????????8,33?1070330272???79704648?/data2/www/test1.down.com/9002852.zip nginx??????6352?????www???34r??????REG???????????????8,33??320267112???79704297?/data2/www/test1.down.com/9001043.zip nginx??????6352?????www???51r??????REG???????????????8,33?1028884960???79704408?/data2/www/test1.down.com/9001612.zip nginx??????6352?????www???52r??????REG???????????????8,33?1050340619???79704544?/data2/www/test1.down.com/9002312.zip nginx??????6353?????www???33r??????REG???????????????8,33?1519968719???79704626?/data2/www/test1.down.com/9002742.zip nginx??????6354?????www???36r??????REG???????????????8,33?1070330272???79704648?/data2/www/test1.down.com/9002852.zip nginx??????6355?????www???13r??????REG???????????????8,33?1070330272???79704648?/data2/www/test1.down.com/9002852.zip nginx??????6355?????www???26r??????REG???????????????8,33??871710375???79704674?/data2/www/test1.down.com/9009983.zip nginx??????6355?????www???30r??????REG???????????????8,33?1070330272???79704648?/data2/www/test1.down.com/9002852.zip nginx??????6355?????www???48r??????REG???????????????8,33?1494485593???79704669?/data2/www/test1.down.com/9009953.zip nginx??????6356?????www???28r??????REG???????????????8,33?1070330272???79704648?/data2/www/test1.down.com/9002852.zip nginx??????6356?????www???31r??????REG???????????????8,33?1323565056???79705782?/data2/www/test1.down.com/9100458.iso nginx??????6357?????www???15r??????REG???????????????8,33?1212593312???79704514?/data2/www/test1.down.com/9002153.zip nginx??????6357?????www???36r??????REG???????????????8,33??298144362???79704131?/data2/www/test1.down.com/9000213.zip

原來是有個shell進入了data2這個目錄，cd /退出后就正常了。還有一個是nginx又開了，用killall結束。

[root@fdcservers?local]#?killall?nginx [root@fdcservers?local]#?umount?/data2

格式化已卸載分區,清理數據（操作須謹慎，沒有后悔藥的）：

[root@fdcservers?local]mkfs?-t?ext4?/dev/sdb1 [root@fdcservers?local]mkfs?-t?ext4?/dev/sdc1 [root@fdcservers?local]mkfs?-t?ext4?/dev/sdd1

4、刪除系統分區文件（操作須謹慎，沒有后悔藥的）：

[root@fdcservers?local]rm?-rf?/data/* [root@fdcservers?local]rm?-rf?/etc/snmp [root@fdcservers?local]rm?-rf?/etc/vsftpd [root@fdcservers?local]rm?-rf?/usr/local

完成。

轉載于:https://blog.51cto.com/fzhddn/1921965

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