Getting /proc/ is not mounted while installing fluent-package-5.0.3-1.el9.x86_64

[anupg336]

What is a problem?

Getting this issue while installing fluentd package in RHEL9.

0:05:24    Running scriptlet: fluent-package-5.0.3-1.el9.x86_64                      4/4 
20:05:25    Installing       : fluent-package-5.0.3-1.el9.x86_64                      4/4 
20:05:25    Running scriptlet: fluent-package-5.0.3-1.el9.x86_64                      4/4 
20:05:25  ⚠️ /proc/ is not mounted. This is not a supported mode of operation. Please fix
20:05:25  your invocation environment to mount /proc/ and /sys/ properly. Proceeding anyway.
20:05:25  Your mileage may vary.
20:05:25  ⚠️ /proc/ is not mounted. This is not a supported mode of operation. Please fix
20:05:25  your invocation environment to mount /proc/ and /sys/ properly. Proceeding anyway.
20:05:25  Your mileage may vary.
20:05:25  Failed to get unit file state for td-agent.service: No such file or directory
20:05:25  ⚠️ /proc/ is not mounted. This is not a supported mode of operation. Please fix
20:05:25  your invocation environment to mount /proc/ and /sys/ properly. Proceeding anyway.
20:05:25  Your mileage may vary.
20:05:25  System has not been booted with systemd as init system (PID 1). Can't operate.
20:05:25  Failed to connect to bus: Host is down

Describe the configuration of Fluentd

No response

Describe the logs of Fluentd

No response

Environment

- Fluentd version: 1.16.3
- TD Agent version:
- Fluent Package version: 5.0.3-1.el9.x86_64
- Docker image (tag):
- Operating system: RHEL9
- Kernel version:

[kenhys]

It is assumed that /proc is mounted on your system.
If it is ready, you can install fluent-package.

$ curl -fsSL https://toolbelt.treasuredata.com/sh/install-redhat-fluent-package5-lts.sh | sh 
==============================
 fluent-package Installation Script 
==============================
This script requires superuser access to install rpm packages.
You will be prompted for your password by sudo.
[sudo] password for kenhys: 
Updating Subscription Management repositories.
Fluentd Project                                  48 kB/s | 251 kB     00:05    
Updating Subscription Management repositories.
Last metadata expiration check: 0:00:08 ago on Tue 30 Apr 2024 11:09:14 AM JST.
Dependencies resolved.
================================================================================
 Package             Arch        Version          Repository               Size
================================================================================
Installing:
 fluent-package      x86_64      5.0.3-1.el9      fluent-package-lts       14 M

Transaction Summary
================================================================================
Install  1 Package

Total download size: 14 M
Installed size: 66 M
Downloading Packages:
fluent-package-5.0.3-1.el9.x86_64.rpm           5.4 MB/s |  14 MB     00:02    
--------------------------------------------------------------------------------
Total                                           5.4 MB/s |  14 MB     00:02     
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1 
  Running scriptlet: fluent-package-5.0.3-1.el9.x86_64                      1/1 
  Installing       : fluent-package-5.0.3-1.el9.x86_64                      1/1 
  Running scriptlet: fluent-package-5.0.3-1.el9.x86_64                      1/1 
Failed to get unit file state for td-agent.service: No such file or directory
inactive

  Verifying        : fluent-package-5.0.3-1.el9.x86_64                      1/1 
Installed products updated.

Installed:
  fluent-package-5.0.3-1.el9.x86_64                                             

Complete!

Installation completed. Happy Logging!

I don't know the reason why, is procps-ng package installed already?