Since #3358 and #3407 systemd-journal() source supports Journald namespaces.

Since the source stores the journald cursor under different persist-keys (based on the configured namespace() option), it allows multiple concurrent sources.

However, we still have a limitation, that only 1 systemd-journald() source can be used in the config.
(See the the journal_reader_initialized global va

currently when rsyslog starts, it checks to see if a pidfile exists, and if it exists, rsyslog refuses to start.

However, if rsyslog crashes or is killed with a -9, it does not have a chance to remove the pidfile and so a replacement cannot be started

As an enhancement, rather than just depending only on the existance of a pid file, rsyslog should look in the pid file and check to see if the

希望作者能够提供上述方法

The documentation can be added to: https://napalm-logs.com/en/latest/syslog/index.html - help would be greatly appreciated.