- added dnstapEncoder object which incapsulates marshalling of dnstap
messages to protobuf and writing data to connection
- dnstapEncoder writes data directly to connection object. It doesn't
use the framestream's "write" method, because it writes data to
intermediate buffer (bufio.Writer) which leads to unnecessary
data copying and drops the performance
- dnstapEncoder reuses a preallocated buffer for marshalling dnstap
messages. Many messages are added to the same buffer. They are
separated with a "frame length" 4-byte values, so the buffer content
is writen to connection object in the format compatible with
framestream library
- added test which guarantees that dnstapEncoder output is the same
as framestream Encoder output
- the performance increase is about 50% in (dio *dnstapIO) serve() method
of dnstap plugin. The overall coredns performance increase is about 10%
in the following configuration:
.:1053 {
erratic {
drop 0
truncate 0
delay 0
}
dnstap tcp://127.0.0.1:6000 full
errors stdout
}
tested with dnsperf tool
This fix tries to address the issue raised in 1275 to clarify
the syntax for multiple endpoints specification.
This fix also adds additional test cases to demo the usage.
This fix fixes 1275.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
When we failing the healthcheck we should increate the fails for this
host; which is the *bleeping* point of doing the HC in the first place.
Add the missing atomic.Adds.
Fixes#1247
HC for google_https does not work because it does not HC the correct
set of IPs. Hard to solve in the current code - rather use forward as
the new impl. and leave this as legacy.
Remove superfluous println that we are refreshing the dns.google.com IP
address.
* plugin/rewrite: don't set or use ecs.DraftOption
Don't know why we are accessing this and explicitally setting it to
False (the default).
Any kill with fire - makes the build, build again.
* remove this
* plugin/kubernetes: Add GetNamespaceByName
A bare or wildcard query for just the namespace should return NODATA,
not NXDOMAIN, otherwise we deny the entirety of the names under the
namespace.
Add test to check for this in pod verified mode.
* Review
More comments and move namespace code to namespace.go
* Update vendor directory for latest changes.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
* Update Gopkg.toml to remove the constraint on zipkin-go-opentracing
As the issue on zipkin-go-opentracing has been fixed. See #1193
for details.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Implement health.Healther in erratic and kubernetes plugin. The
kubernetes' healtcheck is only performed on startup - i.e. turn
healthy after the initial loading.
Erratic follow the drop count: every query%drop turns the healthcheck
unhealthy.
Fixes: #985
* plugin/log: remove need to specify stdout
Since log will only be output to stdout is doesn't make sense to
specify it in Corefile.
Fixes: #1218
* fixup! plugin/log: remove need to specify stdout
I think this badge is misleading as we are not a library so the number of projects we are used in is not really relevant to our adoption. It is more-or-less just the number of external plugins people have built.
Change to use a new 'endpoints' directive and use a constant
Add initial docs for 'endpoints' directive
Add tests to Kubernetes setup for endpoints
Changes based on PR feedback
endpoint_pod_names is a boolean config option. Chahanged docs to reflect this.
Add a test when endpoints_pod_names is not set
Update README.md
Remove endpointNameModeName as it is no longer used
This fix is an attempt to fix the issue raised #1192.
The issue that a plain `dep -ensure update` fails is because
the incompatibility of ugorji/go with the rest of packages (etcd, k8s etc)
and the incompatibility of client-go vs. apimachinery.
This fix fixed apimachinery and ugorji/go so that it is possible
to use `dep -ensure update`.
Previously updates has to be done individually, e.g.,
`dep -ensure update github.com/coreos/etcd`
This fix fixes#1192.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
