[20260725]centos 9安装dstat rpm包.txt

--//今天检查发现安装的centos 9没有安装dstat,查询iso文件,发现竟然没有dstat rpm包,有点意外.
--//而且记忆里安装后我使用过,什么会现在不能使用了,也许删除软件包时附带删除了.

--//查询发现: 原始dstat在CentOS 9/RHEL 9 中已被官方移除，因为它基于 Python 2 且已停止维护。

--//Red Hat 将 dstat 合并到了 Performance Co-Pilot (PCP) 项目中，pcp-dstat 完全兼容原 dstat 的命令和输出格式。
--//sudo dnf install -y pcp-system-tools
--//安装后，dstat 命令会自动可用(/usr/bin/dstat 是指向 pcp-dstat 的软链接)。

--//查看以前操作记录,发现执行过:
# dnf remove pcp\*

--//删除了大量的pcp开头相关的rpm包.安装这个监测使用中消耗大量的磁盘空间.

--//先模拟安装看看.
# mount /dev/sr0 /mnt/cdrom/ -o ro
# dnf install --setopt=tsflags=test -y pcp-system-tools
29cbaseos                                                                                                                                                                                                                                       2.2 MB/s | 2.3 kB     00:00
29cappstream                                                                                                                                                                                                                                    2.7 MB/s | 2.8 kB     00:00
Dependencies resolved.
===================================================================================
 Package                     Architecture   Version        Repository         Size
===================================================================================
Installing:
 pcp-system-tools            x86_64         6.3.7-9.el9    henry_appstream   366 k
Installing dependencies:
 pcp                         x86_64         6.3.7-9.el9    henry_appstream   1.7 M
 pcp-conf                    x86_64         6.3.7-9.el9    henry_appstream    31 k
 pcp-libs                    x86_64         6.3.7-9.el9    henry_appstream   645 k
 pcp-selinux                 x86_64         6.3.7-9.el9    henry_appstream    32 k
 python3-pcp                 x86_64         6.3.7-9.el9    henry_appstream   156 k

Transaction Summary
===================================================================================
Install  6 Packages

Total size: 2.9 M
Installed size: 8.7 M
DNF will only download packages, install gpg keys, and check the transaction.
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Complete!
--//这会让 dnf 完整解析依赖、计算事务、显示要安装的所有包列表，但不会真正写入系统。

# dnf install -y pcp-system-tools
Last metadata expiration check: 0:01:14 ago on Sun 26 Jul 2026 12:24:49 PM CST.
Dependencies resolved.
===============================================================================
 Package                  Architecture  Version       Repository          Size
===============================================================================
Installing:
 pcp-system-tools         x86_64        6.3.7-9.el9   henry_appstream    366 k
Installing dependencies:
 pcp                      x86_64        6.3.7-9.el9   henry_appstream    1.7 M
 pcp-conf                 x86_64        6.3.7-9.el9   henry_appstream     31 k
 pcp-libs                 x86_64        6.3.7-9.el9   henry_appstream    645 k
 pcp-selinux              x86_64        6.3.7-9.el9   henry_appstream     32 k
 python3-pcp              x86_64        6.3.7-9.el9   henry_appstream    156 k

Transaction Summary
===============================================================================
Install  6 Packages

Total size: 2.9 M
Installed size: 8.7 M
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                       1/1
  Running scriptlet: pcp-selinux-6.3.7-9.el9.x86_64        1/6
  Installing       : pcp-selinux-6.3.7-9.el9.x86_64        1/6
  Running scriptlet: pcp-selinux-6.3.7-9.el9.x86_64        1/6
libsemanage.semanage_direct_install_info: Overriding pcp module at lower priority 100 with module at priority 200.

  Installing       : pcp-conf-6.3.7-9.el9.x86_64           2/6
  Installing       : pcp-libs-6.3.7-9.el9.x86_64           3/6
  Running scriptlet: pcp-6.3.7-9.el9.x86_64                4/6
  Installing       : pcp-6.3.7-9.el9.x86_64                4/6
  Running scriptlet: pcp-6.3.7-9.el9.x86_64                4/6
  Installing       : python3-pcp-6.3.7-9.el9.x86_64        5/6
  Installing       : pcp-system-tools-6.3.7-9.el9.x86_64   6/6
  Running scriptlet: pcp-system-tools-6.3.7-9.el9.x86_64   6/6
  Verifying        : pcp-6.3.7-9.el9.x86_64                1/6
  Verifying        : pcp-conf-6.3.7-9.el9.x86_64           2/6
  Verifying        : pcp-libs-6.3.7-9.el9.x86_64           3/6
  Verifying        : pcp-selinux-6.3.7-9.el9.x86_64        4/6
  Verifying        : pcp-system-tools-6.3.7-9.el9.x86_64   5/6
  Verifying        : python3-pcp-6.3.7-9.el9.x86_64        6/6

Installed:
  pcp-6.3.7-9.el9.x86_64  pcp-conf-6.3.7-9.el9.x86_64  pcp-libs-6.3.7-9.el9.x86_64 pcp-selinux-6.3.7-9.el9.x86_64
  pcp-system-tools-6.3.7-9.el9.x86_64   python3-pcp-6.3.7-9.el9.x86_64
Complete!

# which dstat
/usr/bin/dstat

# ls -l /usr/bin/dstat
lrwxrwxrwx. 1 root root 35 2026-04-02 23:41:36 /usr/bin/dstat -> ../../usr/libexec/pcp/bin/pcp-dstat
--//已经建立软链接指向../../usr/libexec/pcp/bin/pcp-dstat

# dstat
You did not select any stats, using -cdngy by default.
----total-usage---- -dsk/total- -net/total- ---paging-- ---system--
usr sys idl wai stl| read  writ| recv  send|  in   out | int   csw
  0   0 100   0   0|   0     0 |  60B  644B|   0     0 | 137   122
  1   0  99   0   0|   0     0 | 120B  371B|   0     0 | 129   120
  0   0 100   0   0|   0     0 |  60B  325B|   0     0 | 122   121
  1   0 100   0   0|   0    55k| 178B  445B|   0     0 | 109   123
  0   0 100   0   0|   0     0 |  60B  326B|   0     0 | 112   114 ^C