Best practices? Redirect clients to second dns when main dc needs to go offline

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adamlevine
OpenVpn Newbie
Posts: 2
Joined: Mon Apr 23, 2018 6:57 am

Best practices? Redirect clients to second dns when main dc needs to go offline

Post by adamlevine » Mon Apr 23, 2018 6:57 am

I have 2 Zentyal domain controllers.

dc1 acts as main dns server, transparent DNS cache not enabled, forwarding to google root dns to resolve external addresses.

When dc1 is offline, I checked that can nslookup, set dc2 as the server and resolve both internal and external addresses, but it needs to be specified manually.

What are the best ways to automate this: router? client-side script? group policy?

adamlevine
OpenVpn Newbie
Posts: 2
Joined: Mon Apr 23, 2018 6:57 am

Re: Best practices? Redirect clients to second dns when main dc needs to go offline

Post by adamlevine » Sat Jun 23, 2018 8:12 am

Hello everyone
Hello everyone
Hello everyone

rsenio
OpenVPN Power User
Posts: 89
Joined: Tue Nov 29, 2011 9:34 pm

Re: Best practices? Redirect clients to second dns when main dc needs to go offline

Post by rsenio » Wed Jul 04, 2018 4:42 pm

Why can't you specify two DNS servers. Specifying DNS is a function of DHCP, and there's a spot on the Access Server to choose an option.

DNS Settings
Pushing DNS servers to clients is optional, unless clients' Internet traffic is to be routed through the VPN
Do not alter clients' DNS server settings
Have clients use the same DNS servers as the Access Server host
Have clients use specific DNS servers

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