Setup additional local DNS - to add scan addresses
In this document I demonstrate how to add local DNS server to be added additionally to an existing DNS, I had this need for creating some additional IP addresses in the DNS for Real Application Cluster (VIP and SCAN) My Testing Environment My Private DNS Server IP Address: 10.20.2.100 Host Name: localdns OS: Oracle Linux Server release 7.5 Client Machine to use DNS IP Address: 10.33.1.120 Host Name: dbhost OS: Oracle Linux Server release 7.4 Current Domain DNS Primary: 192.168.1.10 Secondary: 192.168.1.1 1 DNS entry to add IP Address: 10.33.1.123 Host Name: dbhost-scan Verify that the above IP address is not being used via ping command $ ping 10.33.1.123 -c1 -w 1 >/dev/null 2>&1 ; if [ $? -eq 1 ]; then echo "This IP is Not used"; else echo "This IP is used"; fi This IP is Not used Install required packages $ sudo yum install bind* -y Define zone files in master configuration ‘named.conf‘ file $ sudo vim /etc/named.conf Change 127.0.01 to a...