13.5. 安装 External DNS Operator

创建一个新项目

$ oc new-project external-dns-operator

从 OperatorHub 安装 外部 DNS Operator：

$ cat << EOF | oc apply -f -
apiVersion: operators.coreos.com/v1
kind: OperatorGroup
metadata:
  name: external-dns-group
  namespace: external-dns-operator
spec:
  targetNamespaces:
  - external-dns-operator
---
apiVersion: operators.coreos.com/v1alpha1
kind: Subscription
metadata:
  name: external-dns-operator
  namespace: external-dns-operator
spec:
  channel: stable-v1.1
  installPlanApproval: Automatic
  name: external-dns-operator
  source: redhat-operators
  sourceNamespace: openshift-marketplace
EOF

等待 外部 DNS Operator 正在运行：

$ oc rollout status deploy external-dns-operator --timeout=300s

从 AWS IAM 用户凭证创建 secret：

$ oc -n external-dns-operator create secret generic external-dns \
  --from-file "${SCRATCH}/credentials"

部署 ExternalDNS 控制器：

$ cat << EOF | oc apply -f -
apiVersion: externaldns.olm.openshift.io/v1beta1
kind: ExternalDNS
metadata:
  name: ${DOMAIN}
spec:
  domains:
    - filterType: Include
      matchType: Exact
      name: ${DOMAIN}
  provider:
    aws:
      credentials:
        name: external-dns
    type: AWS
  source:
    openshiftRouteOptions:
      routerName: external-dns-ingress
    type: OpenShiftRoute
  zones:
    - ${ZONE_ID}
EOF

等待控制器运行：

$ oc rollout status deploy external-dns-${DOMAIN} --timeout=300s