* mw/kubernetes: remove federation and cidr
Remove both as we have a corefile syntax change that handles cidr and
remove federation because that is going to be its own middleware.
* backwards incompat changes
This PR:
* removes cidr from kubernetes (core Corefile feature now)
* removes federation from kubernets (comes back as new middleware)
* [remove autopath - which was already gone, so that already was
backwards incompat]
* adds `fallthrough` to the *etcd* middleware and makes you enable it.
* Fail on unknown properties
* documentation
* Disable TestHealthCheck as it uses realtime and fails
The primary driver for autopath was kubernetes. It addresses a specific need in kubernetes, so it deserves a mention in the K8s README, with an example.
* mw/k8s: Test Federation parsing
The test case was there, but there was nothing testing it?!?!?!
Add it and split it out of the main setup test which is too long
already.
Also allow kubernetes a not have a ZONE, just default to the serverblock
in that case. Remove test that was blocking that.
Cleanup up the readme more.
* rewrite README
* Support multiple k8s api servers specification and load balance among api servers
This fix adds supports for multiple k8s api servers specification,
load balance among api servers.
When two or more api servers are specified in kubernetes block (endpoint ...),
a proxy is created locally (with randomly generately port). The coredns
will points to the generated proxy so that load balancing could be achieved.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
* Setup initial healthcheck at the beginning
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
* Update README.md for kubernetes middleware and remove whitespaces.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
* Use middleware/pkg/healthcheck in middleware/kubernetes
for api proxy
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
* Add unit tests & cnames
* more progress
* fix
* next mw dependent unit tests
* add tests for OnNXDOMAIN
* Add AAAA and ndots unit tests; fix request.NewWithQuestion
* Correct default value in README
* add CNAMEs to readme
* review
* fix autopath examples
* fix and test CNAME response order
* rewrite readme
* remove breaks
* missed a break
* nits
* show options as optional
* add note to pods insecure
* add minimal configuration example.
* add a note about replacing kube-dns in the summary
* move deployment section into summary.
* Update README.md
* replace options sections with bullets
and indent all sub sections to match bullet indentation.
not sure if this will render in github properly - it doesn't in the in-line editor preview.
* fix indentation
Contrary to various on-line guides and editors, github now requires 2 spaces to indent paragraphs with bulleted sections above (not just 1).
* Update README.md
* Update README.md
* Update README.md
* fix label syntax
It's just a single EXPRESSION. The EXPRESSION itself has its own kubernetes label expression format.
* Update README.md
* Update README.md
* Add external service cnames
* remove cruft
* update CI k8s version
* change CI k8s version
* min k8s ver for ext services
* trying k8s 1.5
* k8s 1.5 requires ports spec
* remove kruft
* update dns schema version
* add cidrs opt
* remove state data from middleware object
* update k8s docs
* Add integration tests
* add unit tests for cidr and pods config
* more README fixes, separate dev notes
* adjust section headers
* fix typo
* dont require/allow "_" prefix for srv wildcard fields
* streamline parse/validation of req name
* removing nametemplate
* error when zone not found, loopify unit tests
This still needs cleanup, but this is a first pass the cleans some
cruft and documents our style (in middleware.md) and makes all the
docs match that style.
* Added TLS to k8s client
Added options for TLS kubernetes client connection.
* Fix k8s TLS config option parsing
Brings config option parsing for kubernetes TLS in line with recent changes.
* Put TLS config on one line
Put kubernetes tls config on one line to match style established in etcd tls config.
* Add tls option to README
* Adding debug message when starting k8s controller
* Adding work-around for timing issue in k8s integration tests
* Remove unused import
* Fix Makefile for ast package
* Increase k8s verbosity in travis
* Updating TODO list to find root cause of test issue
* go fmt cleanup
* Adding pod setup to kubernetes startup scripts
* Adding template description to k8s README.md
* Fix typo.
* Moving kubernetes setup scripts out of go folder
* Fixing script error
* Adding messages to k8s scripts for clarity
* Adding parsing for label selector to Corefile
* Updating comment typo in k8sCorefile
* Adding implementation of label support to filter exposed objects
* Updating TODO list
* Removing old unused inline k8s API code and tests.
* Adding parsing implementation for `resyncperiod` keyword from Corefile.
* Adding tests for parsing `resyncperiod` keyword from Corefile.
8 Updating README.md and conf/k8sCorefile.
* Merge notification code by @aledbf and update for recent changes.
* Fix travis environment to correctly build with k8s.io and forked repositories.
* Refactored kubernetes Corefile parser
* Added lots of Corefile parsing tests
Updating travis yaml file to:
* Force IPv6 to work in their VM environment
* Enable docker (requires VM environment and sudo)
* Run kubernetes integration tests in Travis
* Updating comment to remove references to Caddy
* Updating README to mark TODO items complete
* Changing all debug print statements over to use logging package
* Commenting out unused functions. TODO: remove when it is not needed
* Update README with namespace and template example
* Adding note about changing the record name format via a template
* Adding test scripts to automate k8s startup
* Automating k8s namespace creation
* Adding automation to start 4 k8s services
* Updating documentation for k8s tests
* Avoid downloading kubectl if already exists
* Adding debug statement when namespace is not exposed.
* Adding basic kubernetes integration tests
* Makefile now contains a "testk8s" target. This target requires k8s to
be running.
* Adding test/kubernetes_test.go file with a couple of basic A record
tests.
* Updating k8s integration tests to only run k8s integration tests
* Adding support for namespace wildcards
* Refactoring to move filtering logic to kubernetes.go file
* go fmt fixes
* Adding wildcard support for namespaces and service names
* Kubernetes integration tests updated for A records.
* Expanded record name assembly for answer section not yet implemented.
* Refactoring to focus k8sclient code just on accessing k8s API.
Filtering now handled in kubernetes.go
* Adding wildcard test cases
* Adding skydns startup script. (To allow side by side testing of wildcards.)
* Commenting out record name assmebly based on NameTemplate. Need to improve template before this makes sense.
* Adding basic SRV integration tests
* Need to add verification for additional answer section
* Fixing comments and formatting
* Moving wildcard constants to vars
* Travis test execution appears to be failing on access to these
constants
* Fixing access to util package
* Trying to work around Travis test bug
* Reverting to access kubernetes/util as "util"
Travis breakage is due to "Infoblox-CTO" in src path
* Removing unnecessary gitignore pattern
* Updating Makefile to run unittests for subpackages
* Adding Corefile validation to ignore overlapping zones
* Fixing SRV query handling
* Updating README.md now that SRV works
* Fixing debug message, adding code comment
* Clarifying implementation of zone normalization
* "Overlapping zones" is ill-defined. Reimplemented zone overlap/subzone
checking to contain these functions in k8s middleware and provide
better code comments explaining the normalization.
* Separate build verbosity from test verbosity
* Cleaning up comments to match repo code style
* Merging warning messages into single message
* Moving function docs to before function declaration
* Adding test cases for k8sclient connector
* Tests cover connector create and setting base url
* Fixed bugs in connector create and setting base url functions
* Updaing README to group and order development work
* Priority focused on achieving functional parity with SkyDNS.
* Adding work items to README and cleaning up formatting
* More README format cleaning
* List formating
* Refactoring k8s API call to allow dependency injection
* Add test cases for data parsing from k8s into dataobject structures
* URL is dependency-injected to allow replacement with a mock http
server during test execution
* Adding more data validation for JSON parsing tests
* Adding test case for GetResourceList()
* Adding notes about SkyDNS embedded IP and port record names
* Marked test case implemented.
* Fixing formatting for example command.
* Fixing formatting
* Adding notes about Docker image building.
* Adding SkyDNS work item
* Updating TODO list
* Adding name template to Corefile to specify how k8s record names are assembled
* Adding template support for multi-segment zones
* Updating example CoreFile for k8s with template comment
* Misc whitespace cleanup
* Adding SkyDNS naming notes
* Adding namespace filtering to CoreFile config
* Updating example k8sCoreFile to specify namespaces
* Removing unused codepath
* Adding check for valid namespace
* More README TODO restructuring to focus effort
* Adding template validation while parsing CoreFile
* Record name template is considered invalid if it contains a symbol of the form ${bar} where the symbol
"${bar}" is not an accepted template symbol.
* Refactoring generation of answer records
* Parse typeName out of query string
* Refactor answer record creation as operation over list of ServiceItems
* Moving k8s API caching into SkyDNS equivalency segment
* Adding function to assemble record names from template
* Warning: This commit may be broken. Syncing to get laptop code over to dev machine.
* More todo notes
* Adding comment describing sample test data.
* Update k8sCorefile
* Adding comment
* Adding filtering support for kubernetes "type"
* Required refactoring to support reuse of the StringInSlice function.
* Cleaning up formatting
* Adding note about SkyDNS supporting word "any".
* baseUrl -> baseURL
* Also removed debug statement from core/setup/kubernetes.go
* Fixing test breaking from Url -> URL naming changes
* Changing record name template language ${...} -> {...}
* Fix formatting with go fmt
* Updating all k8sclient data getters to return error value
* Adding error message to k8sclient data accessors
* Cleaning up setup for kubernetes
* Removed verbose nils in initial k8s middleware instance
* Set reasonable defaults if CoreFile has no parameters in the
kubernetes block. (k8s endpoint, and name template)
* Formatting cleanup -- go fmt
* Laying down kubernetes middleware foundation
* Duplicated a bunch of code form etcd middleware
* Duplicated code hacked to compile and load as a separate middleware
* Adding verbose build option to Makefile
* Removing stubzone and tls support
tls and stubzone support was carried over from base etcd middleware code.
Removing to simplify the kube middleware implementation. (For now.)
* Adding conf directory for sample conf files
* Removing stubzone support from query handler
* Remove upstream and proxy from k8s corefile.
Not sure that upstream or proxy makes sense for a k8s backed zone.
* Comment out use of singleflight serialization
* Removing parsing support for "upstream" directive from k8s
* Removing upstream directive parsing code
* Removing CNAME and TXT lookup implementation
* Create README.md
Brain-dump of DNS record name assembly and open work items.
* Adding notes about wildcard handling
* Adding basic k8s API client
* Fleshing out methods on k8s connector
* Remove PathPrefix from middleware init
* Removing incorrect plural
* Adding brute-force k8s service lookup functions
* Initializing k8s API connector during startup
* Hacking around to call k8s connector
* Parsing incoming domain name into serviceName and namespace
* Improving and simplifying k8s zone matching and label segmentation
* Removing unused functions carried over from etcd middleware
* Adding basic return of k8s data to DNS client
* updated debugging println statements to flag with "[debug]"
* removed code in kubernetes.go::Records that was a hold-over from etcd middleware.
* Removed some random exploratory hacking.
* Minior README.md updates
* Updating with demo instructions
* Updating README.md with CoreFile and removing completed TODO items
* Updating conf file and README to reflect DNS response cache works
* Disabling DNS response caching
* Adding debug statement on entry to Records()
* Changing port number in exampes to port 53.
* Misc style and clarity changes
* Removing empty function definitions
* Adding comment to track future cleanup
* Refactoring README to follow style of other middleware
* Exposing dataobject field (typo)
