Configuring the cluster-wide proxy on the External DNS Operator

To propagate proxy settings to your deployed Operators, configure the cluster-wide proxy. The Operator Lifecycle Manager (OLM) automatically updates these Operators with the new HTTP_PROXY, HTTPS_PROXY, and NO_PROXY environment variables.

Trusting the certificate authority of the cluster-wide proxy

To enable the External DNS Operator to authenticate with the cluster-wide proxy, configure the Operator to trust the certificate authority (CA) of the proxy. This ensures secure communication when routing DNS traffic through the proxy.

Procedure

Create the config map to contain the CA bundle in the external-dns-operator namespace by running the following command:
```
$ 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:
```
$ 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:

$ 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 deploying the External DNS Operator, verify that the trusted CA environment variable is added by running the following command. The output must show trusted-ca for the external-dns-operator deployment.
```
$ oc -n external-dns-operator exec deploy/external-dns-operator -c external-dns-operator -- printenv TRUSTED_CA_CONFIGMAP_NAME
```