I have long log messages to be passed through rsyslog. The logs are being generated via syslogj library that splits the logs into 1024 chars length chunks then sends them to rsyslog (based on what's noted here) :
There some applications that do not ignore the RFC tho, log4j 1.2.15 is one of them (and probably later versions too). If the size of the message >= 1024 bytes, log4j will divide it and send 2 messages regardless of MTU.
AFAIK This has nothing to do with rsyslog, since we have already large logs from remote sources, and also setting $MaxMessageSize 64k in /var/rsyslog.conf didn't change anything.
How could we increase the message size in syslog4j? There's a constant in org.productivity.java.syslog4j.SyslogConstants class which denotes a 1024 size, but I'm not sure if it's related to my issue:
public static final int SYSLOG_BUFFER_SIZE = 1024;
Furthermore, didn't find any method for this job. (like the ones below)
SyslogIF syslogInstance;
syslogInstance = Syslog.getInstance("tcp");
syslogInstance.getConfig().setHost(host);
syslogInstance.getConfig().setPort(port);
P.s: This question apparently has a similar problem but neither mentioned it's via syslog4j nor got any answer.
