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Re: OCP 4.2 setup -





On Fri, 10 Jan 2020 at 20:06, sofia qirjazi <sofia qirjazi gmail com> wrote:
Cool, thanks! 

Before deploying the OCP cluster that uses UPI, It is needed configuration of DHCP , LB and DNS. 
I am interested to know which is :

a) Which is DNS best practice for offine installation?
   For DNS server , it is better to use Openshift DNS server or External DNS (for example, company DNS ) ?

OpenShift 4.x needs an external DNS provider for the records mentioned in the instructions: https://docs.openshift.com/container-platform/4.2/installing/installing_bare_metal/installing-restricted-networks-bare-metal.html#installation-dns-user-infra_installing-restricted-networks-bare-metal

It does run DNS inside the cluster too, but that is separate.
 

b) Which is DHCP best practice ? Which is better approach ?

Not sure what you're asking here, any DHCP server is fine as long as it can hand out static ip addresses (probably all DHCP servers).
 

c) Which is LB/SSL-Offloading best practice ?
   Using SSL offLoading, how is better the approach of LB ?
   - to have LB in front of OCP Cluster or LB inside Openshift ? 

You most likely do not want to do SSL-offloading, just do TCP load balancing (layer 4) as mentioned in the instructions.

https://docs.openshift.com/container-platform/4.2/installing/installing_bare_metal/installing-restricted-networks-bare-metal.html#installation-network-user-infra_installing-restricted-networks-bare-metal 

OpenShift runs it's own SSL (in most circumstances), so doing offloading doesn't make all that much sense, especially when you're just learning OpenShift.
 

Thanks & Regards,
Sofia 

On Thu, Jan 9, 2020 at 8:01 PM W. Trevor King <wking redhat com> wrote:
On Thu, Jan 9, 2020 at 7:51 AM sofia qirjazi wrote:
> I want to setup OCP 4.2 as PoC in bare metal using below steps:
>
> https://blog.openshift.com/openshift-4-2-disconnected-install/

Now that we have official docs [1], it's better to use them instead of
the early blog post.  Not sure if they talk about subnet division
though.

Cheers,
Trevor

[1]: https://docs.openshift.com/container-platform/4.2/installing/installing_bare_metal/installing-restricted-networks-bare-metal.html

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