Build is looking GOOD to run with default configurations:

[leoswaldo@centos9stream ~]$ sudo /usr/bin/fluent-bit -c //etc/fluent-bit/fluent-bit.conf
Fluent Bit v2.1.1
* Copyright (C) 2015-2022 The Fluent Bit Authors
* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
* https://fluentbit.io

[2024/02/07 10:19:15] [ info] [fluent bit] version=2.1.1, commit=, pid=1105255
[2024/02/07 10:19:15] [ info] [storage] ver=1.4.0, type=memory, sync=normal, checksum=off, max_chunks_up=128
[2024/02/07 10:19:15] [ info] [cmetrics] version=0.6.1
[2024/02/07 10:19:15] [ info] [ctraces ] version=0.3.0
[2024/02/07 10:19:15] [ info] [input:cpu:cpu.0] initializing
[2024/02/07 10:19:15] [ info] [input:cpu:cpu.0] storage_strategy='memory' (memory only)
[2024/02/07 10:19:15] [ info] [sp] stream processor started
[2024/02/07 10:19:15] [ info] [output:stdout:stdout.0] worker #0 started
[0] cpu.local: [[1707329956.136862307, {}], {"cpu_p"=>0.062500, "user_p"=>0.062500, "system_p"=>0.000000, "cpu0.p_cpu"=>0.000000, "cpu0.p_user"=>0.000000, "cpu0.p_system"=>0.000000, "cpu1.p_cpu"=>0.000000, "cpu1.p_user"=>0.000000, "cpu1.p_system"=>0.000000, "cpu2.p_cpu"=>0.000000, "cpu2.p_user"=>0.000000, "cpu2.p_system"=>0.000000, "cpu3.p_cpu"=>0.000000, "cpu3.p_user"=>0.000000, "cpu3.p_system"=>0.000000, "cpu4.p_cpu"=>0.000000, "cpu4.p_user"=>0.000000, "cpu4.p_system"=>0.000000, "cpu5.p_cpu"=>0.000000, "cpu5.p_user"=>0.000000, "cpu5.p_system"=>0.000000, "cpu6.p_cpu"=>0.000000, "cpu6.p_user"=>0.000000, "cpu6.p_system"=>0.000000, "cpu7.p_cpu"=>0.000000, "cpu7.p_user"=>0.000000, "cpu7.p_system"=>0.000000, "cpu8.p_cpu"=>0.000000, "cpu8.p_user"=>0.000000, "cpu8.p_system"=>0.000000, "cpu9.p_cpu"=>0.000000, "cpu9.p_user"=>0.000000, "cpu9.p_system"=>0.000000, "cpu10.p_cpu"=>0.000000, "cpu10.p_user"=>0.000000, "cpu10.p_system"=>0.000000, "cpu11.p_cpu"=>0.000000, "cpu11.p_user"=>0.000000, "cpu11.p_system"=>0.000000, "cpu12.p_cpu"=>0.000000, "cpu12.p_user"=>0.000000, "cpu12.p_system"=>0.000000, "cpu13.p_cpu"=>0.000000, "cpu13.p_user"=>0.000000, "cpu13.p_system"=>0.000000, "cpu14.p_cpu"=>0.000000, "cpu14.p_user"=>0.000000, "cpu14.p_system"=>0.000000, "cpu15.p_cpu"=>0.000000, "cpu15.p_user"=>0.000000, "cpu15.p_system"=>0.000000}]

Installation and upgrade work fine