up until at least very recently this was not possible. There has been work to make the connection configuration able to be on a per-connection basis, but I'm not sure if that's completed and been merged yet. If it has, it would not have hit before about 8.2110 or newer.

This will absolutly require using the new format (not $foo bar followed by what it applies to, but action(foo="bar"...) specifying all parameters for that action)

Rainer would need to comment on the status of that.

the super-ugly work-around would be to forward unencrypted via localhost or unix socket to additional instances of rsyslog (one per destination) that would have the encryption settings you need.

David Lang

On Tue, 5 Apr 2022, ZHU Joshua via rsyslog wrote:

Hi,
I need to set up syslog forwarding from a single host (source) to multiple 
remote syslog servers using the TLS protocol, and

1)      each remote server has its own trusted CA

2)      each forward configuration on the source host has its own certificate 
and private key

For example, suppose I need to forward logs to remoteSyslogServer1 and 
remoteSyslogServer2, I'd have two sets of CA/cert/key

$DefaultNetstreamDriverCAFile /path/to/remoteSyslogServer1/ca1.pem
$DefaultNetstreamDriverCertFile /path/to/remoteSyslogServer1/ca1-signed-cert.pem
$DefaultNetstreamDriverKeyFile 
/path/to/remoteSyslogServer1/private-key-for-ca1-signed-cert.pem

and

$DefaultNetstreamDriverCAFile /path/to/remoteSyslogServer2/ca2.pem
$DefaultNetstreamDriverCertFile /path/to/remoteSyslogServer2/ca2-signed-cert.pem
$DefaultNetstreamDriverKeyFile 
/path/to/remoteSyslogServer2/private-key-for-ca2-signed-cert.pem

In other words, I need somehow to scope the above directives by the two remote 
syslog servers in the source host's rsyslog configuration.

Question: any idea on how this can be done?  or pointers to documentations 
explaining how to do this?

Thanks very much,
Joshua

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