[syslog-ng] Syslog-ng and External variables

Evan Rempel erempel at uvic.ca
Mon Aug 29 17:38:53 CEST 2016

I do this by adding the following to my config file

@module confgen context(rewrite) name(r_myself) exec("/bin/hostname")

rewrite r_local {
         set( r_myself(), value("HOST")  );

log {

hope that helps.

On 08/29/2016 06:35 AM, Robert Blayzor wrote:
> On Aug 29, 2016, at 9:22 AM, Fabien Wernli <wernli at in2p3.fr> wrote:
>> The backticks replace content, so you end up with a literal in your config.
>> Try this instead:
>>     rewrite r_host { set("`HOSTNAME`", value("HOST")); };
> That certainly fixes the config from complaining, but I now just get an empty string; for which syslog-ng replaces with the hosts IP instead.
> I’m just trying to re-write each messages host with the hostname of the current server.
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Evan Rempel                                      erempel at uvic.ca
Senior Systems Administrator                        250.721.7691
Data Centre Services, University Systems, University of Victoria

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