README
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DNSNameResolver Operator
The DNSNameResolver Operator can be used to test the unmanaged DNSNameResolver conroller.
Description
The DNSNameResolver controller sends DNS name lookup requests to maximum 5 random CoreDNS pods whenever the TTL of the IP addresses corresponding to a DNS name expires. The DNS name lookups will be handled by the ocp-dnsnameresolver CoreDNS plugin and any new IP address corresponding to the DNS name will be added to the status of the DNSNameResolver CR. The controller also removes the stale IP addresses from the status of the DNSNameResolver CRs after a grace period.
To test the unmanaged DNSNameResolver controller, the operator runs another controller which watches the DNSNameResolver CRD and starts the DNSNameResolver controller.
Kindly provide correct values for the following arguments using the args field of the manager
container in the manager.yaml when deploying the operator
OR in the manager_auth_proxy_patch.yaml
if make deploy is used to deploy the operator:
coredns-namespacecoredns-service-namecoredns-portdns-name-resolver-namespace
Getting Started
Prerequisites
- go version 1.21+
- docker version 17.03+.
- kubectl version v1.11.3+.
- Access to a Kubernetes v1.11.3+ cluster.
To Deploy on the cluster
Build and push your image to the location specified by IMG:
make image-build image-push IMG=<some-registry>/operator:tag
NOTE: This image ought to be published in the personal registry you specified. And it is required to have access to pull the image from the working environment. Make sure you have the proper permission to the registry if the above commands don’t work.
Install the CRDs into the cluster:
make install
Deploy the Manager to the cluster with the image specified by IMG:
make deploy IMG=<some-registry>/operator:tag
NOTE: If you encounter RBAC errors, you may need to login as cluster-admin.
To Uninstall
Undeploy the operator from the cluster:
make undeploy
Delete the APIs(CRDs) from the cluster:
make uninstall
License
Copyright 2024.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
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