Which command creates a service of type ExternalName that points to an external host name?

Which command creates a service of type ExternalName that points to an external host name?

• A. oc create service externalname <servicename> --external-name <mysql_db>
• B. oc create service externalName <servicename> --external-name <mysql_db>
• C. oc create service clusterip <servicename> --external-name <mysql_db>
• D. oc create service externalname <servicename> --external-name <db>

Answer: (A)

ExternalName services route to an external DNS name instead of a cluster IP. You create one by specifying the service type as externalname and providing the external host with the --external-name flag. The command that fits this pattern is oc create service externalname <servicename> --external-name <mysql_db>. It uses the correct resource type and the correct flag to point to the external host. The other options fail because they either use a different service type (like clusterip), or use incorrect capitalization for the resource type or the flag, or supply a less appropriate external name.

ExternalName services route to an external DNS name instead of a cluster IP. You create one by specifying the service type as externalname and providing the external host with the --external-name flag. The command that fits this pattern is oc create service externalname --external-name . It uses the correct resource type and the correct flag to point to the external host. The other options fail because they either use a different service type (like clusterip), or use incorrect capitalization for the resource type or the flag, or supply a less appropriate external name.