Chapter 19. External DNS Operator 19.1. External DNS Operator in OpenShift Container Platform The External DNS Operator deploys and manages ExternalDNS to provide the name resolution for services and routes from the external DNS provider to OpenShift Container Platform. 19.1.1. External DNS Operator The External DNS Operator implements the External DNS API from the olm.openshift.io API group. The External DNS Operator updates services, routes, and external DNS providers. Prerequisites You have installed the yq CLI tool. Procedure You can deploy the External DNS Operator on demand from the OperatorHub. Deploying the External DNS Operator creates a Subscription object. Check the name of an install plan by running the following command: USD oc -n external-dns-operator get sub external-dns-operator -o yaml | yq '.status.installplan.name' Example output install-zcvlr Check if the status of an install plan is Complete by running the following command: USD oc -n external-dns-operator get ip <install_plan_name> -o yaml | yq '.status.phase' Example output Complete View the status of the external-dns-operator deployment by running the following command: USD oc get -n external-dns-operator deployment/external-dns-operator Example output NAME READY UP-TO-DATE AVAILABLE AGE external-dns-operator 1/1 1 1 23h 19.1.2. External DNS Operator logs You can view External DNS Operator logs by using the oc logs command. Procedure View the logs of the External DNS Operator by running the following command: USD oc logs -n external-dns-operator deployment/external-dns-operator -c external-dns-operator 19.1.2.1. External DNS Operator domain name limitations The External DNS Operator uses the TXT registry which adds the prefix for TXT records. This reduces the maximum length of the domain name for TXT records. A DNS record cannot be present without a corresponding TXT record, so the domain name of the DNS record must follow the same limit as the TXT records. For example, a DNS record of <domain_name_from_source> results in a TXT record of external-dns-<record_type>-<domain_name_from_source> . The domain name of the DNS records generated by the External DNS Operator has the following limitations: Record type Number of characters CNAME 44 Wildcard CNAME records on AzureDNS 42 A 48 Wildcard A records on AzureDNS 46 The following error appears in the External DNS Operator logs if the generated domain name exceeds any of the domain name limitations: time="2022-09-02T08:53:57Z" level=error msg="Failure in zone test.example.io. [Id: /hostedzone/Z06988883Q0H0RL6UMXXX]" time="2022-09-02T08:53:57Z" level=error msg="InvalidChangeBatch: [FATAL problem: DomainLabelTooLong (Domain label is too long) encountered with 'external-dns-a-hello-openshift-aaaaaaaaaa-bbbbbbbbbb-ccccccc']\n\tstatus code: 400, request id: e54dfd5a-06c6-47b0-bcb9-a4f7c3a4e0c6" 19.2. Installing External DNS Operator on cloud providers You can install the External DNS Operator on cloud providers such as AWS, Azure, and GCP. 19.2.1. Installing the External DNS Operator with OperatorHub You can install the External DNS Operator by using the OpenShift Container Platform OperatorHub. Procedure Click Operators OperatorHub in the OpenShift Container Platform web console. Click External DNS Operator . You can use the Filter by keyword text box or the filter list to search for External DNS Operator from the list of Operators. Select the external-dns-operator namespace. On the External DNS Operator page, click Install . On the Install Operator page, ensure that you selected the following options: Update the channel as stable-v1 . Installation mode as A specific name on the cluster . Installed namespace as external-dns-operator . If namespace external-dns-operator does not exist, it gets created during the Operator installation. Select Approval Strategy as Automatic or Manual . Approval Strategy is set to Automatic by default. Click Install . If you select Automatic updates, the Operator Lifecycle Manager (OLM) automatically upgrades the running instance of your Operator without any intervention. If you select Manual updates, the OLM creates an update request. As a cluster administrator, you must then manually approve that update request to have the Operator updated to the new version. Verification Verify that the External DNS Operator shows the Status as Succeeded on the Installed Operators dashboard. 19.2.2. Installing the External DNS Operator by using the CLI You can install the External DNS Operator by using the CLI. Prerequisites You are logged in to the OpenShift Container Platform web console as a user with cluster-admin permissions. You are logged into the OpenShift CLI ( oc ). Procedure Create a Namespace object: Create a YAML file that defines the Namespace object: Example namespace.yaml file apiVersion: v1 kind: Namespace metadata: name: external-dns-operator Create the Namespace object by running the following command: USD oc apply -f namespace.yaml Create an OperatorGroup object: Create a YAML file that defines the OperatorGroup object: Example operatorgroup.yaml file apiVersion: operators.coreos.com/v1 kind: OperatorGroup metadata: name: external-dns-operator namespace: external-dns-operator spec: upgradeStrategy: Default targetNamespaces: - external-dns-operator Create the OperatorGroup object by running the following command: USD oc apply -f operatorgroup.yaml Create a Subscription object: Create a YAML file that defines the Subscription object: Example subscription.yaml file apiVersion: operators.coreos.com/v1alpha1 kind: Subscription metadata: name: external-dns-operator namespace: external-dns-operator spec: channel: stable-v1 installPlanApproval: Automatic name: external-dns-operator source: redhat-operators sourceNamespace: openshift-marketplace Create the Subscription object by running the following command: USD oc apply -f subscription.yaml Verification Get the name of the install plan from the subscription by running the following command: USD oc -n external-dns-operator \ get subscription external-dns-operator \ --template='{{.status.installplan.name}}{{"\n"}}' Verify that the status of the install plan is Complete by running the following command: USD oc -n external-dns-operator \ get ip <install_plan_name> \ --template='{{.status.phase}}{{"\n"}}' Verify that the status of the external-dns-operator pod is Running by running the following command: USD oc -n external-dns-operator get pod Example output NAME READY STATUS RESTARTS AGE external-dns-operator-5584585fd7-5lwqm 2/2 Running 0 11m Verify that the catalog source of the subscription is redhat-operators by running the following command: USD oc -n external-dns-operator get subscription Example output NAME PACKAGE SOURCE CHANNEL external-dns-operator external-dns-operator redhat-operators stable-v1 Check the external-dns-operator version by running the following command: USD oc -n external-dns-operator get csv Example output NAME DISPLAY VERSION REPLACES PHASE external-dns-operator.v<1.y.z> ExternalDNS Operator <1.y.z> Succeeded 19.3. External DNS Operator configuration parameters The External DNS Operator includes the following configuration parameters. 19.3.1. External DNS Operator configuration parameters The External DNS Operator includes the following configuration parameters: Parameter Description spec Enables the type of a cloud provider. spec: provider: type: AWS 1 aws: credentials: name: aws-access-key 2 1 Defines available options such as AWS, GCP, Azure, and Infoblox. 2 Defines a secret name for your cloud provider. zones Enables you to specify DNS zones by their domains. If you do not specify zones, the ExternalDNS resource discovers all of the zones present in your cloud provider account. zones: - "myzoneid" 1 1 Specifies the name of DNS zones. domains Enables you to specify AWS zones by their domains. If you do not specify domains, the ExternalDNS resource discovers all of the zones present in your cloud provider account. domains: - filterType: Include 1 matchType: Exact 2 name: "myzonedomain1.com" 3 - filterType: Include matchType: Pattern 4 pattern: ".*\\.otherzonedomain\\.com" 5 1 Ensures that the ExternalDNS resource includes the domain name. 2 Instructs ExternalDNS that the domain matching has to be exact as opposed to regular expression match. 3 Defines the name of the domain. 4 Sets the regex-domain-filter flag in the ExternalDNS resource. You can limit possible domains by using a Regex filter. 5 Defines the regex pattern to be used by the ExternalDNS resource to filter the domains of the target zones. source Enables you to specify the source for the DNS records, Service or Route . source: 1 type: Service 2 service: serviceType: 3 - LoadBalancer - ClusterIP labelFilter: 4 matchLabels: external-dns.mydomain.org/publish: "yes" hostnameAnnotation: "Allow" 5 fqdnTemplate: - "{{.Name}}.myzonedomain.com" 6 1 Defines the settings for the source of DNS records. 2 The ExternalDNS resource uses the Service type as the source for creating DNS records. 3 Sets the service-type-filter flag in the ExternalDNS resource. The serviceType contains the following fields: default : LoadBalancer expected : ClusterIP NodePort LoadBalancer ExternalName 4 Ensures that the controller considers only those resources which matches with label filter. 5 The default value for hostnameAnnotation is Ignore which instructs ExternalDNS to generate DNS records using the templates specified in the field fqdnTemplates . When the value is Allow the DNS records get generated based on the value specified in the external-dns.alpha.kubernetes.io/hostname annotation. 6 The External DNS Operator uses a string to generate DNS names from sources that don't define a hostname, or to add a hostname suffix when paired with the fake source. source: type: OpenShiftRoute 1 openshiftRouteOptions: routerName: default 2 labelFilter: matchLabels: external-dns.mydomain.org/publish: "yes" 1 Creates DNS records. 2 If the source type is OpenShiftRoute , then you can pass the Ingress Controller name. The ExternalDNS resource uses the canonical name of the Ingress Controller as the target for CNAME records. 19.4. Creating DNS records on AWS You can create DNS records on AWS and AWS GovCloud by using External DNS Operator. 19.4.1. Creating DNS records on an public hosted zone for AWS by using Red Hat External DNS Operator You can create DNS records on a public hosted zone for AWS by using the Red Hat External DNS Operator. You can use the same instructions to create DNS records on a hosted zone for AWS GovCloud. Procedure Check the user. The user must have access to the kube-system namespace. If you don't have the credentials, as you can fetch the credentials from the kube-system namespace to use the cloud provider client: USD oc whoami Example output system:admin Fetch the values from aws-creds secret present in kube-system namespace. USD export AWS_ACCESS_KEY_ID=USD(oc get secrets aws-creds -n kube-system --template={{.data.aws_access_key_id}} | base64 -d) USD export AWS_SECRET_ACCESS_KEY=USD(oc get secrets aws-creds -n kube-system --template={{.data.aws_secret_access_key}} | base64 -d) Get the routes to check the domain: USD oc get routes --all-namespaces | grep console Example output openshift-console console console-openshift-console.apps.testextdnsoperator.apacshift.support console https reencrypt/Redirect None openshift-console downloads downloads-openshift-console.apps.testextdnsoperator.apacshift.support downloads http edge/Redirect None Get the list of dns zones to find the one which corresponds to the previously found route's domain: USD aws route53 list-hosted-zones | grep testextdnsoperator.apacshift.support Example output HOSTEDZONES terraform /hostedzone/Z02355203TNN1XXXX1J6O testextdnsoperator.apacshift.support. 5 Create ExternalDNS resource for route source: USD cat <<EOF | oc create -f - apiVersion: externaldns.olm.openshift.io/v1beta1 kind: ExternalDNS metadata: name: sample-aws 1 spec: domains: - filterType: Include 2 matchType: Exact 3 name: testextdnsoperator.apacshift.support 4 provider: type: AWS 5 source: 6 type: OpenShiftRoute 7 openshiftRouteOptions: routerName: default 8 EOF 1 Defines the name of external DNS resource. 2 By default all hosted zones are selected as potential targets. You can include a hosted zone that you need. 3 The matching of the target zone's domain has to be exact (as opposed to regular expression match). 4 Specify the exact domain of the zone you want to update. The hostname of the routes must be subdomains of the specified domain. 5 Defines the AWS Route53 DNS provider. 6 Defines options for the source of DNS records. 7 Defines OpenShift route resource as the source for the DNS records which gets created in the previously specified DNS provider. 8 If the source is OpenShiftRoute , then you can pass the OpenShift Ingress Controller name. External DNS Operator selects the canonical hostname of that router as the target while creating CNAME record. Check the records created for OCP routes using the following command: USD aws route53 list-resource-record-sets --hosted-zone-id Z02355203TNN1XXXX1J6O --query "ResourceRecordSets[?Type == 'CNAME']" | grep console 19.5. Creating DNS records on Azure You can create DNS records on Azure by using the External DNS Operator. Important Using the External DNS Operator on a {entra-first}-enabled cluster or a cluster that runs in Microsoft Azure Government (MAG) regions is not supported. 19.5.1. Creating DNS records on an Azure public DNS zone You can create DNS records on a public DNS zone for Azure by using the External DNS Operator. Prerequisites You must have administrator privileges. The admin user must have access to the kube-system namespace. Procedure Fetch the credentials from the kube-system namespace to use the cloud provider client by running the following command: USD CLIENT_ID=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_client_id}} | base64 -d) USD CLIENT_SECRET=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_client_secret}} | base64 -d) USD RESOURCE_GROUP=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_resourcegroup}} | base64 -d) USD SUBSCRIPTION_ID=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_subscription_id}} | base64 -d) USD TENANT_ID=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_tenant_id}} | base64 -d) Log in to Azure by running the following command: USD az login --service-principal -u "USD{CLIENT_ID}" -p "USD{CLIENT_SECRET}" --tenant "USD{TENANT_ID}" Get a list of routes by running the following command: USD oc get routes --all-namespaces | grep console Example output openshift-console console console-openshift-console.apps.test.azure.example.com console https reencrypt/Redirect None openshift-console downloads downloads-openshift-console.apps.test.azure.example.com downloads http edge/Redirect None Get a list of DNS zones by running the following command: USD az network dns zone list --resource-group "USD{RESOURCE_GROUP}" Create a YAML file, for example, external-dns-sample-azure.yaml , that defines the ExternalDNS object: Example external-dns-sample-azure.yaml file apiVersion: externaldns.olm.openshift.io/v1beta1 kind: ExternalDNS metadata: name: sample-azure 1 spec: zones: - "/subscriptions/1234567890/resourceGroups/test-azure-xxxxx-rg/providers/Microsoft.Network/dnszones/test.azure.example.com" 2 provider: type: Azure 3 source: openshiftRouteOptions: 4 routerName: default 5 type: OpenShiftRoute 6 1 Specifies the External DNS name. 2 Defines the zone ID. 3 Defines the provider type. 4 You can define options for the source of DNS records. 5 If the source type is OpenShiftRoute , you can pass the OpenShift Ingress Controller name. External DNS selects the canonical hostname of that router as the target while creating CNAME record. 6 Defines the route resource as the source for the Azure DNS records. Check the DNS records created for OpenShift Container Platform routes by running the following command: USD az network dns record-set list -g "USD{RESOURCE_GROUP}" -z test.azure.example.com | grep console Note To create records on private hosted zones on private Azure DNS, you need to specify the private zone under the zones field which populates the provider type to azure-private-dns in the ExternalDNS container arguments. 19.6. Creating DNS records on GCP You can create DNS records on Google Cloud Platform (GCP) by using the External DNS Operator. Important Using the External DNS Operator on a cluster with GCP Workload Identity enabled is not supported. For more information about the GCP Workload Identity, see Using manual mode with GCP Workload Identity . 19.6.1. Creating DNS records on a public managed zone for GCP You can create DNS records on a public managed zone for GCP by using the External DNS Operator. Prerequisites You must have administrator privileges. Procedure Copy the gcp-credentials secret in the encoded-gcloud.json file by running the following command: USD oc get secret gcp-credentials -n kube-system --template='{{USDv := index .data "service_account.json"}}{{USDv}}' | base64 -d - > decoded-gcloud.json Export your Google credentials by running the following command: USD export GOOGLE_CREDENTIALS=decoded-gcloud.json Activate your account by using the following command: USD gcloud auth activate-service-account <client_email as per decoded-gcloud.json> --key-file=decoded-gcloud.json Set your project by running the following command: USD gcloud config set project <project_id as per decoded-gcloud.json> Get a list of routes by running the following command: USD oc get routes --all-namespaces | grep console Example output openshift-console console console-openshift-console.apps.test.gcp.example.com console https reencrypt/Redirect None openshift-console downloads downloads-openshift-console.apps.test.gcp.example.com downloads http edge/Redirect None Get a list of managed zones by running the following command: USD gcloud dns managed-zones list | grep test.gcp.example.com Example output qe-cvs4g-private-zone test.gcp.example.com Create a YAML file, for example, external-dns-sample-gcp.yaml , that defines the ExternalDNS object: Example external-dns-sample-gcp.yaml file apiVersion: externaldns.olm.openshift.io/v1beta1 kind: ExternalDNS metadata: name: sample-gcp 1 spec: domains: - filterType: Include 2 matchType: Exact 3 name: test.gcp.example.com 4 provider: type: GCP 5 source: openshiftRouteOptions: 6 routerName: default 7 type: OpenShiftRoute 8 1 Specifies the External DNS name. 2 By default, all hosted zones are selected as potential targets. You can include your hosted zone. 3 The domain of the target must match the string defined by the name key. 4 Specify the exact domain of the zone you want to update. The hostname of the routes must be subdomains of the specified domain. 5 Defines the provider type. 6 You can define options for the source of DNS records. 7 If the source type is OpenShiftRoute , you can pass the OpenShift Ingress Controller name. External DNS selects the canonical hostname of that router as the target while creating CNAME record. 8 Defines the route resource as the source for GCP DNS records. Check the DNS records created for OpenShift Container Platform routes by running the following command: USD gcloud dns record-sets list --zone=qe-cvs4g-private-zone | grep console 19.7. Creating DNS records on Infoblox You can create DNS records on Infoblox by using the External DNS Operator. 19.7.1. Creating DNS records on a public DNS zone on Infoblox You can create DNS records on a public DNS zone on Infoblox by using the External DNS Operator. Prerequisites You have access to the OpenShift CLI ( oc ). You have access to the Infoblox UI. Procedure Create a secret object with Infoblox credentials by running the following command: USD oc -n external-dns-operator create secret generic infoblox-credentials --from-literal=EXTERNAL_DNS_INFOBLOX_WAPI_USERNAME=<infoblox_username> --from-literal=EXTERNAL_DNS_INFOBLOX_WAPI_PASSWORD=<infoblox_password> Get a list of routes by running the following command: USD oc get routes --all-namespaces | grep console Example Output openshift-console console console-openshift-console.apps.test.example.com console https reencrypt/Redirect None openshift-console downloads downloads-openshift-console.apps.test.example.com downloads http edge/Redirect None Create a YAML file, for example, external-dns-sample-infoblox.yaml , that defines the ExternalDNS object: Example external-dns-sample-infoblox.yaml file apiVersion: externaldns.olm.openshift.io/v1beta1 kind: ExternalDNS metadata: name: sample-infoblox 1 spec: provider: type: Infoblox 2 infoblox: credentials: name: infoblox-credentials gridHost: USD{INFOBLOX_GRID_PUBLIC_IP} wapiPort: 443 wapiVersion: "2.3.1" domains: - filterType: Include matchType: Exact name: test.example.com source: type: OpenShiftRoute 3 openshiftRouteOptions: routerName: default 4 1 Specifies the External DNS name. 2 Defines the provider type. 3 You can define options for the source of DNS records. 4 If the source type is OpenShiftRoute , you can pass the OpenShift Ingress Controller name. External DNS selects the canonical hostname of that router as the target while creating CNAME record. Create the ExternalDNS resource on Infoblox by running the following command: USD oc create -f external-dns-sample-infoblox.yaml From the Infoblox UI, check the DNS records created for console routes: Click Data Management DNS Zones . Select the zone name. 19.8. Configuring the cluster-wide proxy on the External DNS Operator After configuring the cluster-wide proxy, the Operator Lifecycle Manager (OLM) triggers automatic updates to all of the deployed Operators with the new contents of the HTTP_PROXY , HTTPS_PROXY , and NO_PROXY environment variables. 19.8.1. Trusting the certificate authority of the cluster-wide proxy You can configure the External DNS Operator to trust the certificate authority of the cluster-wide proxy. Procedure Create the config map to contain the CA bundle in the external-dns-operator namespace by running the following command: USD oc -n external-dns-operator create configmap trusted-ca To inject the trusted CA bundle into the config map, add the config.openshift.io/inject-trusted-cabundle=true label to the config map by running the following command: USD oc -n external-dns-operator label cm trusted-ca config.openshift.io/inject-trusted-cabundle=true Update the subscription of the External DNS Operator by running the following command: USD oc -n external-dns-operator patch subscription external-dns-operator --type='json' -p='[{"op": "add", "path": "/spec/config", "value":{"env":[{"name":"TRUSTED_CA_CONFIGMAP_NAME","value":"trusted-ca"}]}}]' Verification After the deployment of the External DNS Operator is completed, verify that the trusted CA environment variable is added to the external-dns-operator deployment by running the following command: USD oc -n external-dns-operator exec deploy/external-dns-operator -c external-dns-operator -- printenv TRUSTED_CA_CONFIGMAP_NAME Example output trusted-ca

Commands:
oc -n external-dns-operator get sub external-dns-operator -o yaml | yq '.status.installplan.name'
install-zcvlr
oc -n external-dns-operator get ip <install_plan_name> -o yaml | yq '.status.phase'
Complete
oc get -n external-dns-operator deployment/external-dns-operator
NAME READY UP-TO-DATE AVAILABLE AGE external-dns-operator 1/1 1 1 23h
oc logs -n external-dns-operator deployment/external-dns-operator -c external-dns-operator
time="2022-09-02T08:53:57Z" level=error msg="Failure in zone test.example.io. [Id: /hostedzone/Z06988883Q0H0RL6UMXXX]" time="2022-09-02T08:53:57Z" level=error msg="InvalidChangeBatch: [FATAL problem: DomainLabelTooLong (Domain label is too long) encountered with 'external-dns-a-hello-openshift-aaaaaaaaaa-bbbbbbbbbb-ccccccc']\n\tstatus code: 400, request id: e54dfd5a-06c6-47b0-bcb9-a4f7c3a4e0c6"
apiVersion: v1 kind: Namespace metadata: name: external-dns-operator
oc apply -f namespace.yaml
apiVersion: operators.coreos.com/v1 kind: OperatorGroup metadata: name: external-dns-operator namespace: external-dns-operator spec: upgradeStrategy: Default targetNamespaces: - external-dns-operator
oc apply -f operatorgroup.yaml
apiVersion: operators.coreos.com/v1alpha1 kind: Subscription metadata: name: external-dns-operator namespace: external-dns-operator spec: channel: stable-v1 installPlanApproval: Automatic name: external-dns-operator source: redhat-operators sourceNamespace: openshift-marketplace
oc apply -f subscription.yaml
oc -n external-dns-operator get subscription external-dns-operator --template='{{.status.installplan.name}}{{"\n"}}'
oc -n external-dns-operator get ip <install_plan_name> --template='{{.status.phase}}{{"\n"}}'
oc -n external-dns-operator get pod
NAME READY STATUS RESTARTS AGE external-dns-operator-5584585fd7-5lwqm 2/2 Running 0 11m
oc -n external-dns-operator get subscription
NAME PACKAGE SOURCE CHANNEL external-dns-operator external-dns-operator redhat-operators stable-v1
oc -n external-dns-operator get csv
NAME DISPLAY VERSION REPLACES PHASE external-dns-operator.v<1.y.z> ExternalDNS Operator <1.y.z> Succeeded
spec: provider: type: AWS 1 aws: credentials: name: aws-access-key 2
zones: - "myzoneid" 1
domains: - filterType: Include 1 matchType: Exact 2 name: "myzonedomain1.com" 3 - filterType: Include matchType: Pattern 4 pattern: ".*\\.otherzonedomain\\.com" 5
source: 1 type: Service 2 service: serviceType: 3 - LoadBalancer - ClusterIP labelFilter: 4 matchLabels: external-dns.mydomain.org/publish: "yes" hostnameAnnotation: "Allow" 5 fqdnTemplate: - "{{.Name}}.myzonedomain.com" 6
source: type: OpenShiftRoute 1 openshiftRouteOptions: routerName: default 2 labelFilter: matchLabels: external-dns.mydomain.org/publish: "yes"
oc whoami
system:admin
export AWS_ACCESS_KEY_ID=USD(oc get secrets aws-creds -n kube-system --template={{.data.aws_access_key_id}} | base64 -d) export AWS_SECRET_ACCESS_KEY=USD(oc get secrets aws-creds -n kube-system --template={{.data.aws_secret_access_key}} | base64 -d)
oc get routes --all-namespaces | grep console
openshift-console console console-openshift-console.apps.testextdnsoperator.apacshift.support console https reencrypt/Redirect None openshift-console downloads downloads-openshift-console.apps.testextdnsoperator.apacshift.support downloads http edge/Redirect None
aws route53 list-hosted-zones | grep testextdnsoperator.apacshift.support
HOSTEDZONES terraform /hostedzone/Z02355203TNN1XXXX1J6O testextdnsoperator.apacshift.support. 5
cat <<EOF | oc create -f - apiVersion: externaldns.olm.openshift.io/v1beta1 kind: ExternalDNS metadata: name: sample-aws 1 spec: domains: - filterType: Include 2 matchType: Exact 3 name: testextdnsoperator.apacshift.support 4 provider: type: AWS 5 source: 6 type: OpenShiftRoute 7 openshiftRouteOptions: routerName: default 8 EOF
aws route53 list-resource-record-sets --hosted-zone-id Z02355203TNN1XXXX1J6O --query "ResourceRecordSets[?Type == 'CNAME']" | grep console
CLIENT_ID=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_client_id}} | base64 -d) CLIENT_SECRET=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_client_secret}} | base64 -d) RESOURCE_GROUP=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_resourcegroup}} | base64 -d) SUBSCRIPTION_ID=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_subscription_id}} | base64 -d) TENANT_ID=USD(oc get secrets azure-credentials -n kube-system --template={{.data.azure_tenant_id}} | base64 -d)
az login --service-principal -u "USD{CLIENT_ID}" -p "USD{CLIENT_SECRET}" --tenant "USD{TENANT_ID}"
oc get routes --all-namespaces | grep console
openshift-console console console-openshift-console.apps.test.azure.example.com console https reencrypt/Redirect None openshift-console downloads downloads-openshift-console.apps.test.azure.example.com downloads http edge/Redirect None
az network dns zone list --resource-group "USD{RESOURCE_GROUP}"
apiVersion: externaldns.olm.openshift.io/v1beta1 kind: ExternalDNS metadata: name: sample-azure 1 spec: zones: - "/subscriptions/1234567890/resourceGroups/test-azure-xxxxx-rg/providers/Microsoft.Network/dnszones/test.azure.example.com" 2 provider: type: Azure 3 source: openshiftRouteOptions: 4 routerName: default 5 type: OpenShiftRoute 6
az network dns record-set list -g "USD{RESOURCE_GROUP}" -z test.azure.example.com | grep console
oc get secret gcp-credentials -n kube-system --template='{{USDv := index .data "service_account.json"}}{{USDv}}' | base64 -d - > decoded-gcloud.json
export GOOGLE_CREDENTIALS=decoded-gcloud.json
gcloud auth activate-service-account <client_email as per decoded-gcloud.json> --key-file=decoded-gcloud.json
gcloud config set project <project_id as per decoded-gcloud.json>
oc get routes --all-namespaces | grep console
openshift-console console console-openshift-console.apps.test.gcp.example.com console https reencrypt/Redirect None openshift-console downloads downloads-openshift-console.apps.test.gcp.example.com downloads http edge/Redirect None
gcloud dns managed-zones list | grep test.gcp.example.com
qe-cvs4g-private-zone test.gcp.example.com
apiVersion: externaldns.olm.openshift.io/v1beta1 kind: ExternalDNS metadata: name: sample-gcp 1 spec: domains: - filterType: Include 2 matchType: Exact 3 name: test.gcp.example.com 4 provider: type: GCP 5 source: openshiftRouteOptions: 6 routerName: default 7 type: OpenShiftRoute 8
gcloud dns record-sets list --zone=qe-cvs4g-private-zone | grep console
oc -n external-dns-operator create secret generic infoblox-credentials --from-literal=EXTERNAL_DNS_INFOBLOX_WAPI_USERNAME=<infoblox_username> --from-literal=EXTERNAL_DNS_INFOBLOX_WAPI_PASSWORD=<infoblox_password>
oc get routes --all-namespaces | grep console
openshift-console console console-openshift-console.apps.test.example.com console https reencrypt/Redirect None openshift-console downloads downloads-openshift-console.apps.test.example.com downloads http edge/Redirect None
apiVersion: externaldns.olm.openshift.io/v1beta1 kind: ExternalDNS metadata: name: sample-infoblox 1 spec: provider: type: Infoblox 2 infoblox: credentials: name: infoblox-credentials gridHost: USD{INFOBLOX_GRID_PUBLIC_IP} wapiPort: 443 wapiVersion: "2.3.1" domains: - filterType: Include matchType: Exact name: test.example.com source: type: OpenShiftRoute 3 openshiftRouteOptions: routerName: default 4
oc create -f external-dns-sample-infoblox.yaml
oc -n external-dns-operator create configmap trusted-ca
oc -n external-dns-operator label cm trusted-ca config.openshift.io/inject-trusted-cabundle=true
oc -n external-dns-operator patch subscription external-dns-operator --type='json' -p='[{"op": "add", "path": "/spec/config", "value":{"env":[{"name":"TRUSTED_CA_CONFIGMAP_NAME","value":"trusted-ca"}]}}]'
oc -n external-dns-operator exec deploy/external-dns-operator -c external-dns-operator -- printenv TRUSTED_CA_CONFIGMAP_NAME
trusted-ca