> Software > Storage for Backups > Linux CommServe Bare Metal > Getting Started > Preparing the Environment

Setting Up the DNS for Linux CommServe Bare Metal

Linux CommServe Bare Metal uses DNS records to communicate with the clients in your environment. Hence it is important to properly setup the necessary DNS records before setting up the node. Also most of the issues faced during setup are caused by DNS misconfiguration.

  • DNS should resolve to the IP addresses associated with the node.

  • Configuring DNS entries on multiple redundant DNS servers is recommended for greater resiliency.

  • DNS entries are required to be in place for both for the initial setup, and subsequent operations.

  • Both forward (A) and reverse (PTR) records are required.

  • All DNS records must be Fully Qualified Domain Names (FQDN). For example, the name must be HSA1.domain.com; not HSA1.

    Note

    A DNS server is required. Hosts file entries cannot be used as an alternative.

If your DNS server is configured for non-secure DNS updates (not recommended by Microsoft), this should be disabled before attempting the node setup.

Configuring DNS Records

  • For detailed information on creating and verifying DNS records,see the Microsoft support site.

  • Depending on your network topology, setup the necessary DNS records as described in the Network Requirements section of the following pages:

Verifying DNS Entries

Verify and validate the DNS records associated with the node that you plan to setup, before deploying the Linux CommServe Bare Metal node.

The DNS records can be validated from any computer that has access to the DNS server.

Verifying Forward Records (A Records)

Use the following command to verify A records:

# nslookup node_fqdn

Example:

# nslookup HSA1.domain.com
Server:           172.16.10.11
Address:          172.16.10.11#53
Name:     HSA1.domain.com
Address:  172.16.10.101

Verifying Reverse Records (PTR Records)

Use the following command to verify PTR records:

# nslookup node_IP_addr

Example:

# nslookup 172.16.10.101
Server:           172.16.10.11
Address:          172.16.10.11#53
101.10.16.273.in-addr.arpa      name =HSA1.domain.com
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