Thanks. Good point about the custom signal: logrotate and newsyslog seem to be the most popular log rotation utilities and they both support a custom signal.
On Thu, Jan 23, 2020 at 12:09 PM Derek Dagit <da...@apache.org> wrote: > +1 for concept and rationale > > Might be good to survey the common log rotation tools to verify custom > signals are supported. > > On Thu, Jan 23, 2020 at 11:16:25AM -0600, Brian Neradt wrote: > > > > Context > > ====== > > > > Traffic Server currently implements its own mechanism for rotating its > logs > > and cleaning up (i.e., deleting) rotated logs based upon configured > > constraints. These features seem to have been developed at a time when > > third party tools for managing such logs were non-existent or immature. > > Today administrators have tools such as logrotate they can use to manage > > logs. Such tools handle log rotation and deletion (and compression, > > automated emailing, and other related features) in a way that > > administrators are generally familiar with and would prefer to use for > > consistency across their log management needs. After rotating their logs, > > these tools send a signal to the process generating the logs so they can > > close and re-open the logs. Traffic Server does not currently support > > external log managers because it does not support listening for such > > signals. > > > > Proposal > > ======= > > > > In order to support the use of tools such as logrotate, this proposal > > suggests adding support for Traffic Manager and Traffic Server to handle > a > > signal that causes those processes to close and re-open their logs > handles. > > > > Further, while SIGHUP is a pretty common signal used for such purposes, > > this proposes SIGUSR2 instead since we already use that for traffic.out > > (added via https://github.com/apache/trafficserver/pull/274/files). > > > > > > Please share any thoughts or suggestions. > > > > Thanks, > > Brian > > -- > > "Come to Me, all who are weary and heavy-laden, and I will > > give you rest. Take My yoke upon you and learn from Me, for > > I am gentle and humble in heart, and you will find rest for > > your souls. For My yoke is easy and My burden is light." > > > > ~ Matthew 11:28-30 > -- "Come to Me, all who are weary and heavy-laden, and I will give you rest. Take My yoke upon you and learn from Me, for I am gentle and humble in heart, and you will find rest for your souls. For My yoke is easy and My burden is light." ~ Matthew 11:28-30
