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From Clark Breyman <>
Subject Re: Ambari data corruption/recovery process
Date Sat, 27 Jun 2015 00:22:23 GMT
Thanks Yusaku for the quick response.

For our production systems, we're planning on using Postgres replication to
ensure backups, though that doesn't defend against data corruption. Perhaps
snapshots will be required.
Is there any documentation on restoring to a newly provisioned host? Is
there any reason to use an DNS A record instead of a CNAME alias to
simplify the recovery process?

On Fri, Jun 26, 2015 at 5:14 PM, Yusaku Sako <> wrote:

>  Ambari DB should be backed up on a regular basis.  This is the most
> important piece of information.
> It is also advisable to also back up
> /etc/ambari-server/conf/
> If you have these two, you can restore Ambari Server back to a running
> condition on a different host.
> If the hostname of the Ambari Server changes, then you would have to
> update /etc/ambari-agent/conf/ambari-agent.ini to point to the new Ambari
> Server hostname and restart the agent.
>  Yusaku
>   From: Clark Breyman <>
> Reply-To: "" <>
> Date: Friday, June 26, 2015 5:10 PM
> To: "" <>
> Subject: Ambari data corruption/recovery process
>   I'm wondering if anyone can share pointers/procedures/best practices to
> handle the scenarios where:
>  a) The sql database becomes corrupt. (Bugs, ...)
> b) The Ambari service host is lost (e.g. EC2 instance termination,
> physical hardware loss, ...)

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