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plugin/trace: recognize Zipkin URL schemes by prefix (#8625)

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* plugin/trace: recognize Zipkin URL schemes by prefix

Signed-off-by: xinjun.jiang <xinjun.jiang@daocloud.io>

* plugin/trace: compare HTTP schemes case insensitively

Signed-off-by: xinjun.jiang <xinjun.jiang@daocloud.io>

---------

Signed-off-by: xinjun.jiang <xinjun.jiang@daocloud.io>
This commit is contained in:
jxj
2026-10-13 19:55:41 +08:00
committed by GitHub
parent f0baaf05dd
commit 3580a2996e
4 changed files with 18 additions and 7 deletions
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11
man/coredns-trace.7
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@@ -1,9 +1,9 @@
.\" Generated by Mmark Markdown Processer - mmark.miek.nl
.\" Generated by Mmark Markdown Processor - mmark.miek.nl
.TH "COREDNS-TRACE" 7 "October 2026" "CoreDNS" "CoreDNS Plugins"
.SH "NAME"
.PP
\fItrace\fP - enables OpenTracing-based tracing of DNS requests as they go through the plugin chain.
\fItrace\fP \- enables OpenTracing\-based tracing of DNS requests as they go through the plugin chain.
.SH "DESCRIPTION"
.PP
@@ -24,11 +24,12 @@ trace [ENDPOINT\-TYPE] [ENDPOINT]
.RE
.IP \(bu 4
\fBENDPOINT-TYPE\fP is the type of tracing destination. Currently only \fB\fCzipkin\fR and \fB\fCdatadog\fR are supported.
\fBENDPOINT\-TYPE\fP is the type of tracing destination. Currently only \fB\fCzipkin\fR and \fB\fCdatadog\fR are supported.
Defaults to \fB\fCzipkin\fR.
.IP \(bu 4
\fBENDPOINT\fP is the tracing destination, and defaults to \fB\fClocalhost:9411\fR. For Zipkin, if
\fBENDPOINT\fP does not begin with \fB\fChttp\fR, then it will be transformed to \fB\fChttp://ENDPOINT/api/v2/spans\fR.
\fBENDPOINT\fP does not begin with \fB\fChttp://\fR or \fB\fChttps://\fR (case\-insensitive), then it will be transformed to
\fB\fChttp://ENDPOINT/api/v2/spans\fR.
.PP
@@ -66,7 +67,7 @@ Default is \fB\fCcoredns\fR.
\fB\fCdatadog_analytics_rate\fR \fBRATE\fP will enable trace analytics
\[la]https://docs.datadoghq.com/tracing/app_analytics\[ra] on the traces sent
from \fI0\fP to \fI1\fP, \fI1\fP being every trace sent will be analyzed. This is a datadog only feature
(\fBENDPOINT-TYPE\fP needs to be \fB\fCdatadog\fR)
(\fBENDPOINT\-TYPE\fP needs to be \fB\fCdatadog\fR)
.IP \(bu 4
\fB\fCzipkin_max_backlog_size\fR configures the maximum backlog size for Zipkin HTTP reporter. When batch size reaches this threshold,
spans from the beginning of the batch will be disposed. Default is 1000 backlog size.