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https://issues.apache.org/jira/browse/TS-4156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15125402#comment-15125402
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Zhao Yongming commented on TS-4156:
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the log collation works as:
1, dedicated log collation server: no http cache (or others) function active,
bug still a traffic_server, with full functions installed, that way we just
don't put any request on this traffic_server.
someone with very high traffic may use this mode, just don't keep the
collation server out of the http cache service.
2, mixed with cache server: both cache and logging collation server in active,
we log for other hosts(collation clients).
most of the users may choose this mode, it will help you collect all the logs
into one single place, and easy for check or backup.
3, traffic_sac stand alone log server: no server function, just log collation
server.
this is the duplicated binary.
by design, the log collation is going to help you simple the logging by store
all the logs into one single place, one single file the whole site, with just
one timeline. and the log collation mode 'poxy.local.log.collation_mode' is a
LOCAL directive in records.config, that make it possible to active a single
host as collation server while others as collation server, while still got the
cluster management of config files.
so, I think that traffic_server with log collation mode in client or server is
just a must builtin function if we want to keep the log collation feature, and
keep a completely dedicated log collation server may bring more code complex.
> remove the traffic_sac, stand alone log collation server
> --------------------------------------------------------
>
> Key: TS-4156
> URL: https://issues.apache.org/jira/browse/TS-4156
> Project: Traffic Server
> Issue Type: Improvement
> Components: Logging
> Reporter: Zhao Yongming
> Assignee: Zhao Yongming
> Fix For: sometime
>
>
> the stand alone collation server act as a dedicated log server from ATS, this
> is a dedicated log product back in the Inktomi age, and we don't need it as
> this functions are build into the traffic_server binary for free distribution.
> it is time to nuke it down.
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