Hellow,

Please see below the snippet from my syslog-ng.conf file. ABC_LOG_PATH is the environment variable on the host that contains the path. I am trying to access the env variable within the config. It does not throw any error and the configuration is valid but it does not work properly. I don't see the file agent.log being used at all.

source s_agent {

file("`ABC_LOG_PATH`/agent.log" follow-freq(1)

flags(no-parse));

};

root@syslog-ng-784fdc497-pgdzr:/# syslog-ng --version

syslog-ng 3 (3.30.1)

Config version: 3.29

Installer-Version: 3.30.1

Revision:

Compile-Date: Apr 12 2022 20:15:37

Module-Directory: /usr/lib/syslog-ng

Module-Path: /usr/lib/syslog-ng

Include-Path: /usr/share/syslog-ng/include

Available-Modules: add-contextual-data,afamqp,affile,afprog,afsocket,afsql,afstomp,afuser,appmodel,azure-auth-header,basicfuncs,cef,confgen,cryptofuncs,csvparser,dbparser,disk-buffer,graphite,hook-commands,http,json-plugin,kvformat,linux-kmsg-format,map-value-pairs,mod-python,pseudofile,redis,secure-logging,stardate,syslogformat,system-source,tags-parser,timestamp,xml

Enable-Debug: off

Enable-GProf: off

Enable-Memtrace: off

Enable-IPv6: on

Enable-Spoof-Source: off

Enable-TCP-Wrapper: off

Enable-Linux-Caps: off

Enable-Systemd: off

root@syslog-ng-784fdc497-pgdzr:/# uname -a

Linux syslog-ng-784fdc497-pgdzr 4.18.0-147.3.1.el8_1.x86_64 #1 SMP Fri Jan 3 23:55:26 UTC 2020 x86_64 GNU/Linux

root@syslog-ng-784fdc497-pgdzr:/#

Regards,

Faisal