* support v1 and v1beta1 endpointslice
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* update comments
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
When err=nil try to determine the version of the k8s cluster and disable
endpoint slices. Don't return from connecting to the cluster.
In the future we should just default to true, and delete all this code.
Signed-off-by: Miek Gieben <miek@miek.nl>
* support dual stack clusterIPs
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* stickler
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* fix ClusterIPs make
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* initial commit
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* convert endpointslices to object.endpoints
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* add opt hard coded for now
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* check that server supports endpointslice
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* fix import grouping
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* dont use endpoint slice in 1.17 or 1.18
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* bump kind/k8s in circle ci to latest
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* drop k8s to latest supported by kind
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* use endpointslice name as endoint Name; index by Service name
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* use index key comparison in nsAddrs()
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* add Index to object.Endpoint fixtures; fix direct endpoint name compares
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* add slice dup check and test
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* todo
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* add ep-slice skew dup test for reverse
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* nsaddrs: de-dup ep-slice skew dups; add test
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* remove todo
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* address various feedback
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* consolidate endpoint/slice informer code
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* fix endpoint informer consolidation; use clearer func name
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* log info; use major/minor fields
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* fix nsAddr and unit test
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* add latency tracking for endpointslices
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* endpointslice latency unit test & fix
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* code shuffling
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* rename endpointslices in tests
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* remove de-dup from nsAddrs and test
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
* remove de-dup from findServices / test
Signed-off-by: Chris O'Haver <cohaver@infoblox.com>
The Kubernetes DNS specification schema version was
updated to 1.1.0 in order to support IPv6
Signed-off-by: Antonio Ojea <antonio.ojea.garcia@gmail.com>
* use all local IPs
* mult/bind ips
* gofmt + boundIPs fix
* fix no matching endpoint case
* don't duplicate NS records in answer
* fix answer dedup
* fix comment
* add multi local ip test case
* fix external ns records
* use k8s service name for ns record
* update test, add func comment
* expand nsAddrs() test cases
* support local ipv6 ip
* use less confusing pod ip in test
Don't add pods to our internal cache that are being deleted. This saves
a field in the struct as well.
Add (extra) comments about adding fields to the
object/{Pod,Service,Endpoint} structs.
Signed-off-by: Miek Gieben <miek@miek.nl>
* kubernetes: never respond with NXDOMAIN for authority label
Return a nodata response when trying to resolve the authority's label
for a record type that doesn't match the record type of the authority.
This guards against poisoning the authority record by requesting the
wrong record type for the authority label. For instance, given an
authoritative resolver that uses subdomain delegation for Kubernetes
services of a cluster that's configured to use IPv4, the parent may be
poisoned by querying it for the authority label of the cluster subdomain
with a AAAA record type, which would otherwise (i.e. without this
change) return an NXDOMAIN. That is, given
cluster.example.com NS 10800 ns.dns.cluster.example.com
ns.dns.cluster.example.com A 10800 10.0.1.2
The parent may be poisoned for the SOA TTL by querying it for a AAAA
record of ns.dns.cluster.example.com, causing the parent to fail
delegate properly until the SOA TTL lapses.
* kubernetes: add tests for authority queries
* Remove context.Context from request.Request
This removes the context from request.Request and makes all the changes
in the code to make it compile again. It's all mechanical. It did
unearth some weirdness in that the context was kept in handler structs
which may cause havoc with concurrently handling of requests.
Fixes#2721
Signed-off-by: Miek Gieben <miek@miek.nl>
* Make test compile
Signed-off-by: Miek Gieben <miek@miek.nl>
This fix deprecates endpoints for out-of-cluster k8s api,
The Corefile still takes multiple endpoints though only
the first one is used. A warning is shown if there are
multiple endpoints.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
* Default to upstream to self
This is a backwards incompatible change.
This is a massive (cleanup) PR where we default to resolving external
names by the coredns process itself, instead of directly forwarding them
to some upstream.
This ignores any arguments `upstream` may have had and makes it depend
on proxy/forward configuration in the Corefile. This allows resolved
upstream names to be cached and we have better healthchecking of the
upstreams. It also means there is only one way to resolve names, by
either using the proxy or forward plugin.
The proxy/forward lookup.go functions have been removed. This also
lessen the dependency on proxy, meaning deprecating proxy will become
easier. Some tests have been removed as well, or moved to the top-level
test directory as they now require a full coredns process instead of
just the plugin.
For the etcd plugin, the entire StubZone resolving is *dropped*! This
was a hacky (but working) solution to say the least. If someone cares
deeply it can be brought back (maybe)?
The pkg/upstream is now very small and almost does nothing. Also the
New() function was changed to return a pointer to upstream.Upstream. It
also returns only one parameter, so any stragglers using it will
encounter a compile error.
All documentation has been adapted. This affected the following plugins:
* etcd
* file
* auto
* secondary
* federation
* template
* route53
A followup PR will make any upstream directives with arguments an error,
right now they are ignored.
Signed-off-by: Miek Gieben <miek@miek.nl>
* Fix etcd build - probably still fails unit test
Signed-off-by: Miek Gieben <miek@miek.nl>
* Slightly smarter lookup check in upstream
Signed-off-by: Miek Gieben <miek@miek.nl>
* Compilez
Signed-off-by: Miek Gieben <miek@miek.nl>
* plugin/kubernetes: smaller map
to continue with a theme: the map[string]bool can be reduced
to map[string]struct{} to reduce a tiny amount of memory.
Signed-off-by: Miek Gieben <miek@miek.nl>
* fix tests
Signed-off-by: Miek Gieben <miek@miek.nl>
This is a relic from the etcd integration and only used to remove in the
final answer returned to the client. We do need it. Make it a constant
and only one character wide.
Signed-off-by: Miek Gieben <miek@miek.nl>
* Convert to runtime.Object to smaller structs
This adds conversion for all the objects we want to keep in the cache.
It keeps the minimum for CoreDNS to function and throws away the rest.
The conversion:
api.Endpoints -> object.Endpoints
api.Pod -> object.Pod
api.Serivce -> object.Service
We needed to copy some client-go stuff to insert a conversion function
into NewIndexInformers.
Some unrelated cleanups in the watch functionality as that needed to be
touched because of the above translation of objects.
Signed-off-by: Miek Gieben <miek@miek.nl>
* Reduce test line-count
Signed-off-by: Miek Gieben <miek@miek.nl>
* ....and fix test
Signed-off-by: Miek Gieben <miek@miek.nl>
* Drop use of append
Signed-off-by: Miek Gieben <miek@miek.nl>
* cosmetic changes
Signed-off-by: Miek Gieben <miek@miek.nl>
* that was a typo
Signed-off-by: Miek Gieben <miek@miek.nl>
* re-introduce append here
We can't really use len() here because we don't know the number before
hand.
Signed-off-by: Miek Gieben <miek@miek.nl>
* comment in better place
Signed-off-by: Miek Gieben <miek@miek.nl>
* Make the timestamp a bool; thats where it is used for
Signed-off-by: Miek Gieben <miek@miek.nl>
* Set incoming object to nil
Explicataliy discard the converted object; we did a deep copy it's
not needed anymore.
Signed-off-by: Miek Gieben <miek@miek.nl>
* Per Chris's comment
Signed-off-by: Miek Gieben <miek@miek.nl>
* Add support for authentication with kubeconfig files
* Update k8s plugin documentation
* Fix whitespace in README and tests
* Use clientcmd package to load kubeconfig file
* plugin/kubernetes: remove bunch a string ops
This removes a bunch of appends to where not needed, makes dnsutil.Join
take variadic args which removes the need to wrap in a new string slice.
Signed-off-by: Miek Gieben <miek@miek.nl>
* Fix calls to dnsutil.Join
Signed-off-by: Miek Gieben <miek@miek.nl>
* Revert these
Signed-off-by: Miek Gieben <miek@miek.nl>
