Hi everyone,

I'm trying to put rsyslog into a docker container with the imrelp module. Setup 
is quite easy:


rsyslog_docker_global/03-modules.conf:2:module(load="imrelp")
rsyslog_docker_lin/rsyslog.d/11-input-tcp.conf:1:input(type="imrelp" port="2514" 
maxDataSize="10k" keepAlive="on")


Unfortunately, there are no logs, but service looks fine. Logger is working 
with UDP (imudp module) but not in imrelp tcp. When I tried the ptcp module, 
logging worked fine.


Setup:
Ubuntu - 22.04 LTS, 5.15.0-56-generic
docker version
Client: Docker Engine - Community
 Version:           23.0.1
 API version:       1.42
 Go version:        go1.19.5
 Git commit:        a5ee5b1
 Built:             Thu Feb  9 19:47:01 2023
 OS/Arch:           linux/amd64
 Context:           default


Server: Docker Engine - Community
 Engine:
  Version:          23.0.1
  API version:      1.42 (minimum version 1.12)
  Go version:       go1.19.5
  Git commit:       bc3805a
  Built:            Thu Feb  9 19:47:01 2023
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.6.18
  GitCommit:        2456e983eb9e37e47538f59ea18f2043c9a73640
 runc:
  Version:          1.1.4
  GitCommit:        v1.1.4-0-g5fd4c4d
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0


rsyslog - 8.2302
rsyslog-relp - 8.2302
librelp0 - 1.11.0


When I try to connect to imrelp with telnet and close the session, I receive 
this error:
 
v8.2302 (docker)
syslog.err rsyslogd: imrelp[2514]: error 'server closed relp session, session 
broken', object  'lstn 2514: conn to clt127.0.0.1/localhost' - input may not 
work as intended [v8.2302.0 try https://www.rsyslog.com/e/2353 ]
v8.1901 (no docker)
syslog.err rsyslogd: imrelp[514]: error 'server closed relp session, session 
broken', object  'lstn 514: conn to clt 127.0.0.1/localhost' - input may not 
work as intended [v8.1901.0 try https://www.rsyslog.com/e/2353 ]
v8.2112 (no docker)
syslog.err syslogd: imrelp[514]: error 'server closed relp session, session 
broken', object  'lstn 514: conn to clt 127.0.0.1/localhost' - input may not 
work as intended [v8.2112.0 try https://www.rsyslog.com/e/2353 ]
 
 
When I ran rsyslog in debug mode, nothing unusual showed up. 
(/usr/sbin/rsyslogd -i /var/run/syslog.pid -f /etc/rsyslog.conf -dn)


 
Is there something that I'm missing on this basic setup ? 


Thank you for any advice


Best regards,


Tomas Bekecs

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