On Wed, 2 Sep 2015, Maupertuis Philippe wrote:
Hi,
My rsyslog client configuration should be the same for all my clients except
for the remote syslog server name and port.
I have two options :
Inside the rsyslog.conf deduce them from the local hostname
Set them as environment variable (in /etc/sysconfig/rsyslog perhaps)
Of course the remote server and port don't change so the logic as to be done
only once at the startup and not for every message.
Should something like this work :
*.* action(type="omfwd" target="%$!remote_server%" port="%$!remote_port%"
protocol="tcp")
Is there a way to use variable with the "old" syntax
*.** @@"%$!remote_server%:%$!remote_port%"
My tries were unsuccessful both with the new and the old syntax.
An important point to consider, I am stuck with rsyslog 7.4 as provided by
redhat/Centos.
not all parameters can be variables (performance reasons, there's a cost to
looking up the variables for each log message)
the only way to do this inside rsyslog is to have if statements based on your
hostname.
Really, this should be done outside of rsyslog. Create a basic rsyslog config,
and then at install time do something like
sed -i -e s/REMOTEHOST/1.1.1.1/ -e s/REMOTEPORT/514/ /etc/rsyslog.conf
(or use Chef/Puppet/Salt/Ansible/etc to effectively do the same thing)
David Lang
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