RHCSA8.2

Node1

配置您的系统以使用默认存储库

配置您 的系统以使用默认存储库

    YUM 存储库已可以从 http://foundation0.ilt.example.com/dvd/BaseOS 和 `http://foundation0.ilt.example.com/dvd/AppStream 使用配置您的系统，以将这些位置用作默认存储库

[root@clear ~]# cat /etc/yum.repos.d/BaseOS_AppStream.repo 
[BaseOS]
name=BaseOS
baseurl=http://foundation0.ilt.example.com/dvd/BaseOS
gpgcheck=0
enabled=1

[AppStream]
name=AppStream
baseurl=http://foundation0.ilt.example.com/dvd/AppStream
gpgcheck=0
enabled=1

创建用户帐户

创建用户帐户

创建下列用户、组和组成员资格：

    名为 sysmgrs 的组

    用户 natasha ，作为次要组从属于 sysmgrs

    用户 harry ，作为次要组还从属于 sysmgrs

    用户 sarah ，无权访问系统上的交互式 shell 且不是 sysmgrs 的成员

    natasha 、 harry 和 sarah 的密码应当都是 flectrag

[root@clear ~]# groupadd sysmgrs
[root@clear ~]# useradd -G sysmgrs natasha
[root@clear ~]# useradd -G sysmgrs harry
[root@clear ~]# useradd -s /bin/false sarah
[root@clear ~]# echo flectrag | passwd --stdin natasha
Changing password for user natasha.
passwd: all authentication tokens updated successfully.
[root@clear ~]# echo flectrag | passwd --stdin harry
Changing password for user harry.
passwd: all authentication tokens updated successfully.
[root@clear ~]# echo flectrag | passwd --stdin sarah
Changing password for user sarah.
passwd: all authentication tokens updated successfully.

配置 cron 作业

配置 cron 作业

配置 cron 作业，该作业每隔 2 分钟运行并执行以下命令：

    logger "EX200 in progress"，以用户 natasha 身份运行

#查看服务状态crond
[root@clear ~]# systemctl status crond | grep Active
   Active: active (running) since Wed 2023-08-30 15:12:01 EDT; 24min ago

[root@clear ~]# systemctl enable crond
[root@clear ~]# crontab -e -u natasha
no crontab for natasha - using an empty one
crontab: installing new crontab
[root@clear ~]# crontab -l -u natasha
*/2 * * * * logger "EX200 in progress" 

创建协作目录

创建具有以下特征的协作目录 /home/managers ：

    /home/managers 的组用权是 sysmgrs

    目录应当可被 sysmgrs 的成员读取、写入和访问，但任何其他用户不具这些权限。（当然，root 用户有权访问系统上的所有文件和目录）

    /home/managers 中创建的文件自动将组所有权设置到 sysmgrs 组

[root@clear ~]# mkdir /home/managers
[root@clear ~]# chown :sysmgrs  /home/managers
[root@clear ~]# chmod 2770 /home/managers

配置 NTP

配置 NTP

配置您的系统，使其成为 materials.example.com 的 NTP 客户端。（注：materials.example.com 是 classroom.example.com 的 DNS 别名）

[root@clear ~]# systemctl status chronyd | grep Active
   Active: active (running) since Wed 2023-08-30 15:10:30 EDT; 44min ago
[root@clear ~]# vim /etc/chrony.conf
#添加下面这段 
[root@clear ~]# cat /etc/chrony.conf | grep materials
server materials.example.com iburst
[root@clear ~]# systemctl restart chronyd
[root@clear ~]# timedatectl 
               Local time: Wed 2023-08-30 15:56:35 EDT
           Universal time: Wed 2023-08-30 19:56:35 UTC
                 RTC time: Wed 2023-08-30 19:51:45
                Time zone: America/New_York (EDT, -0400)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

配置 autofs

配置 autofs

配置 autofs ，以按照如下所述自动挂载远程用户的主目录：

    materials.example.com ( 172.25.254.254 ) NFS 导出 /rhome 到您的系统。此文件系统包含为用户 remoteuser1 预配置的主目录

    remoteuser1 的主目录是 materials.example.com:/rhome/remoteuser1

    remoteuser1 的主目录应自动挂载到本地 /rhome 下的 /rhome/remoteuser1

    主目录必须可供其用户写入

    remoteuser1 的密码是 flectrag

[root@clear ~]# yum -y install autofs

[root@clear ~]# vim /etc/auto.master
auto.master    auto.master.d/ 
[root@clear ~]# vim /etc/auto.master  
#设置自动挂载
[root@clear ~]# cat /etc/auto.master | grep rhome
/rhome    /etc/auto.rhome
[root@clear ~]# vim /etc/auto.rhome
#设置权限
[root@clear ~]# cat /etc/auto.rhome 
remoteuser1 -rw materials.example.com:/rhome/remoteuser1
[root@clear ~]# systemctl enable --now autofs
Created symlink /etc/systemd/system/multi-user.target.wants/autofs.service → /usr/lib/systemd/system/autofs.service.
[root@clear ~]# systemctl restart autofs
[root@clear ~]# echo flectrag | passwd --stdin remoteuser1
Changing password for user remoteuser1.
passwd: all authentication tokens updated successfully.
[root@clear ~]# su - remoteuser1 
[remoteuser1@clear ~]$ pwd
/rhome/remoteuser1
[remoteuser1@clear ~]$ exit
logout

配置 /var/tmp/fstab 权限

配置 /var/tmp/fstab 权限

将文件 /etc/fstab 复制到 /var/tmp/fstab 。配置 /var/tmp/fstab 的权限以满足如下条件：

    文件 /var/tmp/fstab 自 root 用户所有

    文件 /var/tmp/fstab 属于组 root

    文件 /var/tmp/fstab 应不能被任何人执行

    用户 natasha 能够读取和写入 /var/tmp/fstab

    用户 harry 无法写入或读取 /var/tmp/fstab

    所有其他用户（当前或未来）能够读取 /var/tmp/fstab

[root@clear ~]# cp /etc/fstab /var/tmp/fstab
[root@clear ~]# ll /var/tmp/fstab
[root@clear ~]# setfacl -m u:natasha:rw /var/tmp/fstab 
[root@clear ~]# setfacl -m u:harry:- /var/tmp/fstab 
[root@clear ~]# getfacl /var/tmp/fstab 
getfacl: Removing leading '/' from absolute path names
# file: var/tmp/fstab
# owner: root
# group: root
user::rw-
user:natasha:rw-
user:harry:---
group::r--
mask::rw-
other::r--

配置用户帐户

配置用户帐号

配置用户 manalo ，其用户 ID 为 3533。此用户的密码应当为 flectrag。

[root@clear ~]# useradd -u 3533 manalo
[root@clear ~]# echo flectrag | passwd --stdin manalo
Changing password for user manalo.
passwd: all authentication tokens updated successfully.
[root@clear ~]# tail -1 /etc/passwd
manalo:x:3533:3533::/home/manalo:/bin/bash

查找文件

查找文件

查找当 jacques 所有的所有文件并将其副本放入 /root/findfiles 目录

[root@clear ~]# mkdir /root/findfiles
[root@clear ~]# find / -user jacques -exec cp -a {} /root/findfiles \;
find: ‘/proc/25337/task/25337/fd/6’: No such file or directory
find: ‘/proc/25337/task/25337/fdinfo/6’: No such file or directory
find: ‘/proc/25337/fd/7’: No such file or directory
find: ‘/proc/25337/fdinfo/7’: No such file or directory
[root@clear ~]# ll /root/findfiles/
total 0
-rw-r--r--. 1 jacques jacques 0 Aug 30 16:23 gamelan
-rw-r--r--. 1 jacques jacques 0 Aug 30 16:23 jacques
-rw-r--r--. 1 jacques jacques 0 Aug 30 16:23 libWedgeit.so.1.2.3

查找字符串

查找字符串

查找文件 /usr/share/xml/iso-codes/iso_639_3.xml 中包含字符串 ng 的所有行。将所有这些行的副本按原始顺序放在文件 /root/list 中。 /root/list 不得包含空行，且所有行必须是 /usr/share/xml/iso-codes/iso_639_3.xml 中原始行的确切副本。

[root@clear ~]# grep ng  /usr/share/xml/iso-codes/iso_639_3.xml  > /root/list

创建存档

创建存档

创建一个名为 /root/backup.tar.gz 的 tar 存档，其应包含 /usr/local 的 tar 存档，其应包含 /usr/local 的内容。该 tar 存档必须使用 gzip 进行压缩。

[root@clear ~]# tar -czvf  /root/backup.tar.gz /usr/local
[root@clear ~]# file /root/backup.tar.gz 
/root/backup.tar.gz: gzip compressed data, last modified: Wed Aug 30 20:30:16 2023, from Unix, original size 51200

添加免密操作

允许sysmgrs组成员sudo时不需要密码

visudo #进⼊编辑sudo
 在110⾏下编写或者是在 #%wheel下编写
%sysmgrs ALL=(ALL) NOPASSWD: ALL

配置创建新用户密码策略

创建新用户，默认密码策略20天后密码过期

[root@clear ~]# cat /etc/login.defs | grep PASS_MAX_DAYS
#    PASS_MAX_DAYS    Maximum number of days a password may be used.
PASS_MAX_DAYS    20


[root@clear ~]# useradd usr1
[root@clear ~]# chage usr1
Changing the aging information for usr1
Enter the new value, or press ENTER for the default

    Minimum Password Age [0]: ^X
chage: error changing fields
[root@clear ~]# chage usr1
Changing the aging information for usr1
Enter the new value, or press ENTER for the default

    Minimum Password Age [0]: 
    Maximum Password Age [20]: 
    Last Password Change (YYYY-MM-DD) [2023-08-30]: 
    Password Expiration Warning [7]: 
    Password Inactive [-1]: 
    Account Expiration Date (YYYY-MM-DD) [-1]:

Node2

设置 root 密码

设置 root 密码

将 node2 的 root 密码设置为 flectrag 。您需要获得系统访问权限才能进行此操作。

配置您的系统以使用默认存储库

配置您 的系统以使用默认存储库

    YUM 存储库已可以从 http://foundation0.ilt.example.com/dvd/BaseOS 和 http://foundation0.ilt.example.com/dvd/AppStream 使用配置您的系统，以将这些位置用作默认存储库

• 与node1存储文件相同，将其复制过去

  [root@clear ~]# scp /etc/yum.repos.d/BaseOS_AppStream.repo node2:/etc/yum.repos.d/
  The authenticity of host 'node2 (172.25.250.200)' can't be established.
  ECDSA key fingerprint is SHA256:1H687jfusVXYAUzAuByFfx1U/lB4VS+6h04wRhXhmZU.
  Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
  Warning: Permanently added 'node2,172.25.250.200' (ECDSA) to the list of known hosts.
  root@node2's password: 
  BaseOS_AppStream.repo                         100%  203    15.1KB/s   00:00  
  

• 在node2上查看

  [root@node2 ~]# ls /etc/yum.repos.d/
  BaseOS_AppStream.repo
  [root@node2 ~]# yum repolist
  repo id                                 repo name
  AppStream                               AppStream
  BaseOS                                  BaseOS
  

调整逻辑卷大小

设置逻辑卷大小

将逻辑卷 vo 及其文件系统的大小调整到 230 MiB。确保文件系统内容保持不变。注：分区大小很少与请求的大小完全相同，因此可以接受范围为 217 MiB 到 243 MiB 的大小。

#查看文件格式和存储大小
[root@node2 ~]# df -Th
Filesystem           Type      Size  Used Avail Use% Mounted on
devtmpfs             devtmpfs  887M     0  887M   0% /dev
tmpfs                tmpfs     914M     0  914M   0% /dev/shm
tmpfs                tmpfs     914M   17M  897M   2% /run
tmpfs                tmpfs     914M     0  914M   0% /sys/fs/cgroup
/dev/vda3            xfs       9.9G  1.6G  8.4G  16% /
/dev/vda2            vfat      100M  6.8M   94M   7% /boot/efi
/dev/mapper/myvol-vo ext4      175M  1.6M  160M   1% /reports
tmpfs                tmpfs     183M     0  183M   0% /run/user/0

#查看myvol组
[root@node2 ~]# vgs myvol
  VG    #PV #LV #SN Attr   VSize   VFree  
  myvol   1   1   0 wz--n- 508.00m 324.00m 

#拓展
[root@node2 ~]# lvextend -L 230M /dev/myvol/vo
  Rounding size to boundary between physical extents: 232.00 MiB.
  Size of logical volume myvol/vo changed from 184.00 MiB (46 extents) to 232.00 MiB (58 extents).
  Logical volume myvol/vo successfully resized.
 #同步信息到系统内核
[root@node2 ~]# resize2fs /dev/myvol/vo
resize2fs 1.45.4 (23-Sep-2019)
Filesystem at /dev/myvol/vo is mounted on /reports; on-line resizing required
old_desc_blocks = 2, new_desc_blocks = 2
The filesystem on /dev/myvol/vo is now 237568 (1k) blocks long.

[root@node2 ~]# df -Th /reports/
Filesystem           Type  Size  Used Avail Use% Mounted on
/dev/mapper/myvol-vo ext4  221M  2.1M  204M   1% /reports

添加交换分区

添加交换分区

向您的系统添加一个额外的交换分区 756MiB 。交换分区应在系统启动时自动挂载。不要删除或以任何方式改动系统上的任何现有交换分区。

#查看磁盘情况
[root@node2 ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE M
OUNTPOINT
vda             252:0    0   10G  0 disk 
├─vda1          252:1    0    1M  0 part 
├─vda2          252:2    0  100M  0 part /boot/efi
└─vda3          252:3    0  9.9G  0 part /
vdb             252:16   0    4G  0 disk 
├─vdb1          252:17   0  510M  0 part 
│ └─myvol-vo    253:0    0  232M  0 lvm  /reports
└─vdb2          252:18   0  512M  0 part 
  └─vgroup-swap 253:1    0  256M  0 lvm  [SWAP]
vdc             252:32   0   10G  0 disk 

#创建一个新分区
[root@node2 ~]# fdisk /dev/vdb

Welcome to fdisk (util-linux 2.32.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): n
Partition type
   p   primary (2 primary, 0 extended, 2 free)
   e   extended (container for logical partitions)
Select (default p): 

Using default response p.
Partition number (3,4, default 3): 
First sector (2095106-8388607, default 2097152):  
Last sector, +sectors or +size{K,M,G,T,P} (2097152-8388607, default 8388607): +756M

Created a new partition 3 of type 'Linux' and of size 756 MiB.

Command (m for help): w
The partition table has been altered.
Syncing disks.  

[root@node2 ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
vda             252:0    0   10G  0 disk 
├─vda1          252:1    0    1M  0 part 
├─vda2          252:2    0  100M  0 part /boot/efi
└─vda3          252:3    0  9.9G  0 part /
vdb             252:16   0    4G  0 disk 
├─vdb1          252:17   0  510M  0 part 
│ └─myvol-vo    253:0    0  232M  0 lvm  /reports
├─vdb2          252:18   0  512M  0 part 
│ └─vgroup-swap 253:1    0  256M  0 lvm  [SWAP]
└─vdb3          252:19   0  756M  0 part 
vdc             252:32   0   10G  0 disk 
 #格式化交换分区
[root@node2 ~]# mkswap /dev/vdb3
Setting up swapspace version 1, size = 756 MiB (792719360 bytes)
no label, UUID=b6992756-ad20-458d-aeac-e1b362d235e2
[root@node2 ~]# vim /etc/fstab
[root@node2 ~]# cat /etc/fstab | grep vdb3 #启动自动挂载
/dev/vdb3 none swap defaults 0 0
[root@node2 ~]# swapon -a  #将/etc/fstab⽂件中所有设置为swap的设备，启动为交换区
[root@node2 ~]# swapon  #激活交换空间
NAME      TYPE      SIZE USED PRIO
/dev/dm-1 partition 256M   0B   -2
/dev/vdb3 partition 756M   0B   -3

创建逻辑卷

创建逻辑卷

根据如下要求，创建新的逻辑卷：

    逻辑卷取名为 qa ，属于 qagroup 卷组，大小为 60 个扩展块

    qagroup 卷组中逻辑卷的扩展块大小应当为 16 MiB

    使用 ext3 文件系统格式化新逻辑卷。该逻辑卷应在系统启动时自动挂载到 /mnt/qa 下

[root@node2 ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
vda             252:0    0   10G  0 disk 
├─vda1          252:1    0    1M  0 part 
├─vda2          252:2    0  100M  0 part /boot/efi
└─vda3          252:3    0  9.9G  0 part /
vdb             252:16   0    4G  0 disk 
├─vdb1          252:17   0  510M  0 part 
│ └─myvol-vo    253:0    0  232M  0 lvm  /reports
├─vdb2          252:18   0  512M  0 part 
│ └─vgroup-swap 253:1    0  256M  0 lvm  [SWAP]
└─vdb3          252:19   0  756M  0 part [SWAP]
vdc             252:32   0   10G  0 disk 
[root@node2 ~]# fdisk /dev/vdb   #新建分区

Welcome to fdisk (util-linux 2.32.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.


Command (m for help): n
Partition type
   p   primary (3 primary, 0 extended, 1 free)
   e   extended (container for logical partitions)
Select (default e): p

Selected partition 4
First sector (2095106-8388607, default 3645440): 
Last sector, +sectors or +size{K,M,G,T,P} (3645440-8388607, default 8388607):  

Created a new partition 4 of type 'Linux' and of size 2.3 GiB.

Command (m for help): w
The partition table has been altered.
Syncing disks.

[root@node2 ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
vda             252:0    0   10G  0 disk 
├─vda1          252:1    0    1M  0 part 
├─vda2          252:2    0  100M  0 part /boot/efi
└─vda3          252:3    0  9.9G  0 part /
vdb             252:16   0    4G  0 disk 
├─vdb1          252:17   0  510M  0 part 
│ └─myvol-vo    253:0    0  232M  0 lvm  /reports
├─vdb2          252:18   0  512M  0 part 
│ └─vgroup-swap 253:1    0  256M  0 lvm  [SWAP]
├─vdb3          252:19   0  756M  0 part [SWAP]
└─vdb4          252:20   0  2.3G  0 part 
vdc             252:32   0   10G  0 disk 

[root@node2 ~]# pvcreate /dev/vdb4  #创建物理卷
  Physical volume "/dev/vdb4" successfully created.
[root@node2 ~]# vgcreate -s 16M qagroup /dev/vdb4  #创建卷组
  Volume group "qagroup" successfully created

[root@node2 ~]# lvcreate -l 60 -n qa qagroup  #创建逻辑卷
  Logical volume "qa" created.  
[root@node2 ~]# mkfs.ext3 /dev/qagroup/qa #格式化逻辑卷
mke2fs 1.45.4 (23-Sep-2019)
Creating filesystem with 245760 4k blocks and 61440 inodes
Filesystem UUID: 4c20ff08-a20d-48e2-83f6-3f5b3064c193
Superblock backups stored on blocks: 
    32768, 98304, 163840, 229376

Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done

[root@node2 ~]# mkdir /mnt/qa

[root@node2 ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
vda             252:0    0   10G  0 disk 
├─vda1          252:1    0    1M  0 part 
├─vda2          252:2    0  100M  0 part /boot/efi
└─vda3          252:3    0  9.9G  0 part /
vdb             252:16   0    4G  0 disk 
├─vdb1          252:17   0  510M  0 part 
│ └─myvol-vo    253:0    0  232M  0 lvm  /reports
├─vdb2          252:18   0  512M  0 part 
│ └─vgroup-swap 253:1    0  256M  0 lvm  [SWAP]
├─vdb3          252:19   0  756M  0 part [SWAP]
└─vdb4          252:20   0  2.3G  0 part 
  └─qagroup-qa  253:2    0  960M  0 lvm  
vdc             252:32   0   10G  0 disk 
[root@node2 ~]# vim /etc/fstab  #设置自动挂载
[root@node2 ~]# cat /etc/fstab | grep qa
/dev/qagroup/qa /mnt/qa ext3 defaults 0 0
[root@node2 ~]# mount -a
[root@node2 ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
vda             252:0    0   10G  0 disk 
├─vda1          252:1    0    1M  0 part 
├─vda2          252:2    0  100M  0 part /boot/efi
└─vda3          252:3    0  9.9G  0 part /
vdb             252:16   0    4G  0 disk 
├─vdb1          252:17   0  510M  0 part 
│ └─myvol-vo    253:0    0  232M  0 lvm  /reports
├─vdb2          252:18   0  512M  0 part 
│ └─vgroup-swap 253:1    0  256M  0 lvm  [SWAP]
├─vdb3          252:19   0  756M  0 part [SWAP]
└─vdb4          252:20   0  2.3G  0 part 
  └─qagroup-qa  253:2    0  960M  0 lvm  /mnt/qa
vdc             252:32   0   10G  0 disk 

创建 VDO 卷

创建 VDO 卷

根据如下要求，创建新的 VDO 卷：

    使用未分区的磁盘

    该卷的名称为 vdough

    该卷的逻辑大小为 50G

    该卷使用 xfs 文件系统格式化

    该卷（在系统启动时）挂载到 /vbread 下

[root@node2 ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
vda             252:0    0   10G  0 disk 
├─vda1          252:1    0    1M  0 part 
├─vda2          252:2    0  100M  0 part /boot/efi
└─vda3          252:3    0  9.9G  0 part /
vdb             252:16   0    4G  0 disk 
├─vdb1          252:17   0  510M  0 part 
│ └─myvol-vo    253:0    0  232M  0 lvm  /reports
├─vdb2          252:18   0  512M  0 part 
│ └─vgroup-swap 253:1    0  256M  0 lvm  [SWAP]
├─vdb3          252:19   0  756M  0 part [SWAP]
└─vdb4          252:20   0  2.3G  0 part 
  └─qagroup-qa  253:2    0  960M  0 lvm  /mnt/qa
vdc             252:32   0   10G  0 disk  #使用未分区的磁盘



[root@node2 ~]# yum install vdo -y
[root@node2 ~]# vdo create --name=vdough --device=/dev/vdc --vdoLogicalSize=50G
Creating VDO vdough
      The VDO volume can address 6 GB in 3 data slabs, each 2 GB.
      It can grow to address at most 16 TB of physical storage in 8192 slabs.
      If a larger maximum size might be needed, use bigger slabs.
Starting VDO vdough
Starting compression on VDO vdough
VDO instance 0 volume is ready at /dev/mapper/vdough
   # 该卷使用 xfs 文件系统格式化
[root@node2 ~]# mkfs.xfs /dev/mapper/vdough
meta-data=/dev/mapper/vdough     isize=512    agcount=4, agsize=3276800 blks
         =                       sectsz=4096  attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
data     =                       bsize=4096   blocks=13107200, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=6400, version=2
         =                       sectsz=4096  sunit=1 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0


#挂载
[root@node2 ~]# mkdir /vbread
[root@node2 ~]# vim /etc/fstab
[root@node2 ~]# mount -a
[root@node2 ~]# df -Th /vbread/
Filesystem         Type  Size  Used Avail Use% Mounted on
/dev/mapper/vdough xfs    50G  390M   50G   1% /vbread
[root@node2 ~]# lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
vda             252:0    0   10G  0 disk 
├─vda1          252:1    0    1M  0 part 
├─vda2          252:2    0  100M  0 part /boot/efi
└─vda3          252:3    0  9.9G  0 part /
vdb             252:16   0    4G  0 disk 
├─vdb1          252:17   0  510M  0 part 
│ └─myvol-vo    253:0    0  232M  0 lvm  /reports
├─vdb2          252:18   0  512M  0 part 
│ └─vgroup-swap 253:1    0  256M  0 lvm  [SWAP]
├─vdb3          252:19   0  756M  0 part [SWAP]
└─vdb4          252:20   0  2.3G  0 part 
  └─qagroup-qa  253:2    0  960M  0 lvm  /mnt/qa
vdc             252:32   0   10G  0 disk 
└─vdough        253:3    0   50G  0 vdo  /vbread

配置系统调优

配置系统调优

为您的系统选择建议的 tuned 配置集并将它设为默认设置。

[root@node2 ~]# yum -y install tuned
Last metadata expiration check: 0:53:38 ago on Wed 30 Aug 2023 04:57:11 PM EDT.
Package tuned-2.13.0-6.el8.noarch is already installed.
Dependencies resolved.
Nothing to do.
Complete!
[root@node2 ~]# systemctl enable tuned
[root@node2 ~]# systemctl restart tuned
[root@node2 ~]# tuned-adm active
Current active profile: throughput-performance
[root@node2 ~]# tuned-adm recommend
virtual-guest
[root@node2 ~]# tuned-adm profile virtual-guest
[root@node2 ~]# tuned-adm active
Current active profile: virtual-guest