The issue I am facing: - I noticed when you are using Pi-Hole as a DNS server we cannot make entries that contain the same hostname.domainname but different IP addresses. My need for this is I run an Oracle RAC environment in my house (I'm a DBA) and Oracle's scan addresses require at least 3 IP addresses at a minimum. While I can use 1 IP address I would prefer to make my environment as close to a production setup as possible. Is there a technical reason we cannot add DNS records with the same hostname? I know I could do this with Windows DNS but was trying to not have to create another VM just for hosting DNS if possible.
Details about my system: - VMware ESX 6.7 environment with a VM running CentOS7.
What I have changed since installing Pi-hole: - Nothing changed after installation. Only added custom DNS records for my network
It this a common abbreviation? I have never heard of it
I guess this is done because most user will not want it and rather do this by accident and something will not work. The typical way to do such a thing is to edit the /etc/hosts file of your Pi-hole and include everything in there. No need to do anything in addition. There are no limitations to this file.
Shouldnt you use SRV records instead of A records ?
When multiple MySQL instances provide the same service for your applications, DNS SRV records can be used to provide failover, load balancing, and replication services. They eliminate the need for clients to identify each possible host in the connection string, or for connections to be handled by an additional software component.
Not for an Oracle database scan address. You can use A records as Oracle's software (during installation) will check the records to make sure they are available and valid. If not the installer will warn you. You can proceed without the other A records and things should still work but it's not best practice.
I will give this a go and report back later on today. My son starts Kindergarten via remote learning today so I'm sure it's going to be one heck of a day....lol
I was able to get some time before school and added the records to the /etc/hosts file. I tried to install the software again and this time it worked without any errors or warnings. Thank you so much for your help!
I was reading the two links you posted because I never heard of the records before. Now I'm intrigued I just put SRV records on my whiteboard so once my environment is done I can do some research just to know what they are and when they would be needed...
I just put SRV records on my whiteboard so once my environment is done I can do some research just to know what they are and when they would be needed...