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CentOS 6如何修改磁盤配額限制

  為了避免用戶過度的使用磁盤空間,管理員會對磁盤空間進行配額限制,以免影響系統運行,但在有些時候,因為磁盤配額限制設置的不合理,導致磁盤空間不夠用,這時就需要對磁盤配額進行修改,下面小編就給大家介紹下CentOS 6如何修改磁盤配額限制。

 CentOS 6如何修改磁盤配額限制

  CentOS建五個用戶,均需要進行磁盤配額限制,每個用戶的配額為 10MB (hard) 以及 8MB (soft)

  環境

  [root@localhost ~]# uname -a

  Linux localhost.localdomain 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

  [root@localhost ~]# nl /etc/issue

  1 CentOS release 6.5 (Final)

  2 Kernel \r on an \m

  1、建5用戶vbirdN

  [root@linuxidc ~]# vi au.sh

  #!/bin/bash

  groupadd vbirdgroup

  for username in vbird1 vbird2 vbird3 vbird4 vbird5

  do

  useradd -G vbirdgroup $username

  echo “password” | passwd --stdin $username

  done

  [root@linuxidc ~]# sh au.sh

  Changing password for user vbird1.

  passwd: all authentication tokens updated successfully.

  Changing password for user vbird2.

  passwd: all authentication tokens updated successfully.

  Changing password for user vbird3.

  passwd: all authentication tokens updated successfully.

  Changing password for user vbird4.

  passwd: all authentication tokens updated successfully.

  Changing password for user vbird5.

  passwd: all authentication tokens updated successfully.

  2、掃一眼家目錄

  [root@linuxidc ~]# ll /home/

  total 28

  drwx------。 4 vbird1 vbird1 4096 Dec 1 15:57 vbird1

  drwx------。 4 vbird2 vbird2 4096 Dec 1 15:57 vbird2

  drwx------。 4 vbird3 vbird3 4096 Dec 1 15:57 vbird3

  drwx------。 4 vbird4 vbird4 4096 Dec 1 15:57 vbird4

  drwx------。 4 vbird5 vbird5 4096 Dec 1 15:57 vbird5

  drwx------。 4 zxw zxw 4096 Sep 18 18:03 zxw

  瞅一下vb1的組和id

  [root@linuxidc ~]# id vbird1

  uid=503(vbird1) gid=504(vbird1) groups=504(vbird1),503(vbirdgroup)

  3、給剛建的這幾個准備一個用於這幾個用戶都能訪問的目錄/home/vbirdgroup

  [root@linuxidc ~]# mkdir /home/vbirdgroup

  [root@linuxidc ~]# chgrp vbirdgroup /home/vbirdgroup/

  [root@linuxidc ~]# chmod 2770 /home/vbirdgroup/

  [root@linuxidc ~]# ll -d /home/linuxidc/

  drwx---rwx. 5 linuxidc linuxidc 4096 Sep 18 14:13 /home/linuxidc/

  設置第四位,它位於三位權限序列的前面,第四位數字取值是4,2,1,代表意思如下:

  4,執行時設置用戶ID,用於授權給基於文件屬主的進程,而不是給創建此進程的用戶。

  2,執行時設置用戶組ID,用於授權給基於文件所在組的進程,而不是基於創建此進程的用戶。

  1,設置粘著位。

  4、現在 磁盤配額概要

  在/home下進行quota,需要如下:

  文件系統的支持

  quota 數據文件建置

  quota 啟動

  建立用戶 quota 信息

  5、將 /home 獨立一個分區,因為 quota 僅支持 filesystem 而不支持單一目錄

  /home上增加usrquota,grpquota

  [root@localhost ~]# nl /etc/fstab

  1 #

  2 # /etc/fstab

  3 # Created by anaconda on Tue Dec 2 18:52:50 2014

  4 #

  5 # Accessible filesystems, by reference, are maintained under ‘/dev/disk’

  6 # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info

  7 #

  8 UUID=93cd7207-78c4-4a95-be1b-7451772c21ad / ext4 defaults 1 1

  9 UUID=9a982f8d-d590-49f2-9cf1-e07a5b8238dd /boot ext4 defaults 1 2

  10 UUID=c8939b59-9a73-45fa-bd5a-f016a5aa631e /home ext4 defaults,usrquota,grpquota 1 2

  11 UUID=1f3d9eaf-e140-47ab-ae99-fcf1516d2070 swap swap defaults 0 0

  12 tmpfs /dev/shm tmpfs defaults 0 0

  13 devpts /dev/pts devpts gid=5,mode=620 0 0

  14 sysfs /sys sysfs defaults 0 0

  15 proc /proc proc defaults 0 0

  6、卸載、加載/home,並查看/home項

  [root@localhost ~]# umount /home/; mount -a

  [root@localhost ~]# mount | grep home

  /dev/sda3 on /home type ext4 (rw,usrquota,grpquota)

  7、quotacheck生成配額文件,結果如下

  [root@localhost ~]# qutoacheck -avug

  -bash: qutoacheck: command not found

  [root@localhost ~]#

上一頁12下一頁共2頁

  8、查找、安裝 quota

  [root@localhost ~]# find / -name qutoacheck

  [root@localhost ~]#

  [root@localhost ~]# rpm -qa | grep quota

  quota-3.17-20.el6.x86_64

  安裝

  [root@localhost ~]# yum -y install quota-3.17-20.el6.x86_64

  Loaded plugins: fastestmirror, refresh-packagekit, security

  Loading mirror speeds from cached hostfile

  * base: centos.ustc.edu.cn

  * extras: centos.ustc.edu.cn

  * updates: centos.ustc.edu.cn

  base | 3.7 kB 00:00

  base/primary_db | 4.6 MB 00:29

  extras | 3.4 kB 00:00

  extras/primary_db | 29 kB 00:00

  updates | 3.4 kB 00:00

  updates/primary_db | 910 kB 00:05

  Setting up Install Process

  Nothing to do

  [root@localhost ~]#

  9、開啟限制,生成用戶和組限制文件

  [root@localhost ~]# quotacheck -avug

  quotacheck: Your kernel probably supports journaled quota but you are not using it. Consider switching to journaled quota to avoid running quotacheck after an unclean shutdown.

  quotacheck: Scanning /dev/sda3 [/home] done

  quotacheck: Cannot stat old user quota file /home/aquota.user: No such file or directory. Usage will not be substracted.

  quotacheck: Cannot stat old group quota file /home/aquota.group: No such file or directory. Usage will not be substracted.

  quotacheck: Cannot stat old user quota file /home/aquota.user: No such file or directory. Usage will not be substracted.

  quotacheck: Cannot stat old group quota file /home/aquota.group: No such file or directory. Usage will not be substracted.

  quotacheck: Checked 33 directories and 18 files

  quotacheck: Old file not found.

  quotacheck: Old file not found.

  [root@localhost ~]# quotaon -avug

  /dev/sda3 [/home]: group quotas turned on

  /dev/sda3 [/home]: user quotas turned on

  10、增加配額限制

  [root@localhost ~]# edquota -u vbird1

  Disk quotas for user vbird1 (uid 501):

  Filesystem blocks soft hard inodes soft hard

  /dev/sda3 32 8000 10000 8 0 0

  單位是KB

  [root@localhost ~]# edquota -u vbird2

  。。。

  [root@localhost ~]# edquota -p vbird1 vbird2 vbird3 vbi

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