DNS Level 100 Rohit Rahi November 2018 1
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Objectives After completing this lesson, you should be able to: Describe the OCI DNS Services available with Oracle Cloud Infrastructure Configure DNS for a Tenancy 3
OCI DNS Highly scalable, global anycast Domain Name System (DNS) network that assures high site availability and low latency Customers can manage DNS records - domain names can be either cloud or non-cloud resources OCI DNS service is used when: Domains and Zones need to be exposed via the internet for DNS resolution Domains and Zones can reside in both Enterprise on premise and OCI environments DNS traffic needs to be intelligently handled across multiple resources 4
Capabilities of OCI DNS The following functions are available: Create and manage zones Create and manage records Import/upload zone files. Zone Transfer Save and Publish changes View all zones Query Counts- Total and per Zone 5
DNS Record types supported by OCI DNS Currently, OCI DNS supports the following DNS records: A (Address Record) AAAA (IPv6 Address Record) CNAME (Canonical Name Record) NS (Name Server record) MX (Mail Exchange Record) PTR (Pointer Record) SOA (Start of Authority Record) SRV (Service Locator) TXT (Text Record) OCI DNS also supports an ALIAS record type which is specific to OCI DNS. It can be used to map to various OCI (Compute, Network, Database or Storage), third party or private assets. The ALIAS record acts similar to a CNAME record but the difference being they can be at the 'apex' record of a Zone and is not visible to external resolvers 6
Using OCI DNS OCI DNS is available in the OCI Console under the Edge Services" tab This will bring the user to the DNS Zone Management Screen. From here the user can create Zones to see that the service is working 7
Adding a Zone From the Managed DNS Zones page: Click Add Zone, Select Method type of Manual Enter a Zone Name, Select Zone Type of Primary Zone is created and can be verified from the Managed DNS Zones Management page 8
View/Add Records Select a zone to view record details for that zone Zone details will show the list of records for that zone Select Add Record to add new record Click Publish Changes to update Zone with new record details. Default NS and SOA records are automatically generated when a Zone is created, so no new records need to be added to generate query data 9
Summary In this lesson, you should have learned the following: Learned about OCI DNS Service Learned how to configure a OCI DNS Zone 10
cloud.oracle.com/iaas cloud.oracle.com/tryit 11