On Tue, Jul 9, 2013 at 1:07 PM, Jonny Törnbom <[email protected]>wrote:
> Hi, > > Is there a reason to why rsyslog starts after basic.target on > systemd and not earlier? This is a bit related to the other > issue about missing early boot-up messages due to journal socket > getting full (only 11 messages can fit socket buffer) until messages > starts to get dropped, until rsyslog starts later on. > > well, before the introduction of the journal, systemd took care of this, simply by locally buffering the early boot messages inside the kernel log. Worked pretty well. > I'm quoting parts of an email from Umut Tezduyar from systemd mailing > list: > > "Number of messages that can be queued on /run/systemd/journal/syslog > is controlled by /proc/sys/net/unix/max_dgram_qlen and this value is > by default 10 in most distributions. What this means is, after journal > forwards 11 messages to the socket, it will not be able to do so until > external logging daemon comes up and clears up > /run/systemd/journal/syslog. If logging daemon is starting after > basic.target, it is pretty certain that it will not be able to receive > all the early boot messages." > > The obvious solution here is that systemd queues messages until the sink is ready to accept them. This is what rsyslog does in such cases. Rainer > Thanks > > -Jonny > _______________________________________________ > rsyslog mailing list > http://lists.adiscon.net/mailman/listinfo/rsyslog > http://www.rsyslog.com/professional-services/ > What's up with rsyslog? Follow https://twitter.com/rgerhards > NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad > of sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you > DON'T LIKE THAT. > _______________________________________________ rsyslog mailing list http://lists.adiscon.net/mailman/listinfo/rsyslog http://www.rsyslog.com/professional-services/ What's up with rsyslog? Follow https://twitter.com/rgerhards NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T LIKE THAT.
