[syslog-ng] syslog-ng with multiple destinations

[Szemere, László]

Hello Sebastian,
 the copied error message indicates that there was a problem with your TCP
source (s_remote_tcp). But unfortunately I can not reproduce the exact same
error.
 Just to be sure, please check what connection was associated with the
mentioned fd (in this case fd='32') when the error message occur.


 Undependent from the connection problem. You mentioned: "We lose some
logs."
 Please notice, that the flow-control option is not interpreted in case of
UDP connections (in both directions) so it is possible to loose messages
with this configuration by design.


Best regards,
Laci


On Tue, Aug 21, 2018 at 11:46 AM, <swald.ext at orange.com> wrote:

> Hello,
>
>
>
> We are a syslog-ng configuration with multiple destinations :
>
>
>
> source s_remote_udp {
>
>   udp(ip(0.0.0.0) port(514));
>
> };
>
>
>
> source s_remote_tcp {
>
>   tcp(ip(0.0.0.0) port(514) max-connections(1000) so_keepalive(yes));
>
> };
>
>
>
> destination d_SIEM_ { udp("10.0.1.145" port(514)); };
>
> destination d_BOX_ { file("/var/log/box/FLOW_$R_MONTH$R_DAY$R_HOUR$R_MIN.log"
> create_dirs(yes) dir_perm(0755) dir_owner(root) dir_group(root) owner(root)
> group(root)); };
>
>
>
> filter f_SIEM_ { match("FLOW:"); };
>
>
>
> log { source(s_remote_udp); source(s_remote_tcp); filter(f_SIEM_);
> destination(d_BOX_); destination(d_SIEM_);flags(flow-control,final); };
>
>
>
> We can see kind of errors :
>
> /var/log/syslog-ng.log : Aug  4 23:34:39 host1 syslog-ng[16290]: I/O error
> occurred while reading; fd='32', error='Connection reset by peer (104)'
>
>
>
> We lose some logs. We have a syslog-ng version 3.2.
>
>
>
> Can you help please please ?
>
>
>
> How can I diagnose the problem? How do I get to the root of the problem?
> Maybe debugging syslog-ng?
>
>
>
> Thanks in advance.
>
>
>
> Best regards. Sebastian.
>
>
>
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