syslogd
The syslogd command is used as a “syslog daemon”. It sends syslog entries
over the network using UDP so that they can be consumed by a central logging
server. This is achieved by reading the newline separated long entries from the
syslog device specified by CONFIG_SYSLOG_DEVPATH (similar to how
dmesg works) and sending them as UDP packets to the configured host.
If the syslog device being read is non-blocking, syslogd will terminate
with a successful error code once all logs have been read. It is suggested to
use a blocking device so that syslogd will continuously send logs when they
are generated.
In order to use this command, you must have a UDP capable platform and have
enabled RFC 5424 compatible syslog
messages: CONFIG_SYSLOG_RFC5424.
Options are similar to the Linux syslogd utility, however not all options are
implemented since NuttX does not immediately support the more complex features
(i.e. the -l option). The application can only act as an originator, it does
not receive or forward logs.
Warning
The daemon runs itself in the background using posix_spawn() due to
limitations with the NuttX implementation of fork() being architecture
dependent. This results in more consistent behaviour, but requires
CONFIG_LIBC_EXECFUNCS to be enabled.
Read more about syslog on NuttX: SYSLOG