10db2a80df
* Add middleware/cache Add a caching middleware that caches nxdomain, nodata and successful responses. It differentiates between DNSSEC on normal DNS replies. Each reply is compress and scrubbed so it will fit the specific client asking for it. * first simple test, less exporting of stuff * more * Add middleware/cache Add a caching middleware that caches nxdomain, nodata and successful responses. It differentiates between DNSSEC on normal DNS replies. Each reply is compressed and scrubbed so it will fit the specific client asking for it. The TTL is decremented with the time spend in the cache. There is syntax that allows you to cap the TTL for all records, no matter what. This allows for a shortlived cache, just to absorb query peaks. +Tests * cache test infrastructure * Testing |
||
|---|---|---|
| .. | ||
| msg | ||
| singleflight | ||
| cname_test.go | ||
| etcd.go | ||
| group_test.go | ||
| handler.go | ||
| lookup.go | ||
| lookup_test.go | ||
| multi_test.go | ||
| other_test.go | ||
| path.go | ||
| path_test.go | ||
| README.md | ||
| setup_test.go | ||
| stub.go | ||
| stub_cycle_test.go | ||
| stub_handler.go | ||
| stub_test.go | ||
etcd
etcd enabled reading zone data from an etcd instance. The data in etcd has to be encoded as
a message
like SkyDNS. It should also work just like SkyDNS.
The etcd middleware makes extensive use of the proxy middleware to forward and query other servers in the network.
Syntax
etcd [zones...]
zoneszones etcd should be authoritative for.
The path will default to /skydns the local etcd proxy (http://127.0.0.1:2379).
If no zones are specified the block's zone will be used as the zone.
If you want to round robin A and AAAA responses look at the loadbalance middleware.
etcd [zones...] {
stubzones
path /skydns
endpoint endpoint...
upstream address...
tls cert key cacert
}
stubzonesenable the stub zones feature. The stubzone is only done in the etcd tree located under the first zone specified.paththe path inside etcd, defaults to "/skydns".endpointthe etcd endpoints, default to "http://localhost:2397".upstreamupstream resolvers to be used resolve external names found in etcd, think CNAMEs pointing to external names. If you want CoreDNS to act as a proxy for clients you'll need to add the proxy middleware.tlsfollowed the cert, key and the CA's cert filenames.
Examples
This is the default SkyDNS setup, with everying specified in full:
.:53 {
etcd {
stubzones
path /skydns
endpoint http://localhost:2397
upstream 8.8.8.8:53 8.8.4.4:53
}
loadbalance
proxy . 8.8.8.8:53 8.8.4.4:53
}