View source for Ubuntu HPC DNS setup on master node

[[Main Page|Home]] > [[Ubuntu]] > [[Ubuntu HPC setup with openpbs and openmpi|HPC setup with openpbs and openmpi]] > [[Ubuntu HPC DNS setup on master node|DNS setup on master node]]

The nodes in HPC cluster should resolve each other via both short name and FQDN.  To help with host resolution centrally, we can setup DNS on master using:
# Install bind9 package using:
#:<pre>
#:: apt -y install bind9
#:</pre>
# Edit '<tt>/etc/bind/named.conf.options</tt>' to include:<source type="shell">
        forwarders {
                <primary-dns-ip>;
                <secondary-dns-ip>;
        };

        dnssec-validation no;
        listen-on port 53 { any; };
        allow-query     { localhost; <private-hpc-subnet>; };
        recursion yes;

        //listen-on-v6 { any; };
</source> 
# Edit '<tt>/etc/bind/named.conf.local</tt>' to include:<source type="shell">
zone "<private-zone>." IN {
        type master;
        file "<private-zone>.forward";
};
</source>
# Create zone file '<tt>/var/cache/bind/<private-zone>.foward</tt>'    Refer [[Configuring basic DNS service with bind]] for syntax
# Restart named and also enable it on boot using:
#:<pre>
#:: systemctl restart named
#:: systemctl enable named
#:</pre>
# Validate that settings are working using 
#:<pre>
#:: nslookup node<n>.<private-zone> 127.0.0.1
#:</pre>
# Configure localhost as dns and appropriate domain search on master using:
#:<pre>
#:: resolvectl domain <private-interface> <private-zone>
#:: resolvectl domain <public-interface> <private-zone>
#:: 
#:: resolvectl dns <public-interface> 127.0.0.1
#:: resolvectl dns <private-interface> 127.0.0.1
#:</pre> 
# Test DNS and search domain settings by using:
#:<pre>
#:: ping node<n>
#:</pre>
# Resolvectl based settings don't persist after reboot.  For persistent settings launch following as root user:
#:<pre>
#:: sudo nm-connection-editor
#:</pre>
#: and change appropriate interface DNS and search settings using the editor.
# (Optionally) reboot and validate that DNS and domain settings are coming properly after reboot.

[[Main Page|Home]] > [[Ubuntu]] > [[Ubuntu HPC setup with openpbs and openmpi|HPC setup with openpbs and openmpi]] > [[Ubuntu HPC DNS setup on master node|DNS setup on master node]]