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<p>Hello,</p>
<p>you need to "clone" the first server, change the ip address,
mount the same maildir storage and use some mechanism to share the
accounts database. <br>
</p>
<p>Then you need to put a TCP load-balancer in front of the servers
an you are good to go. This is the easiest solution if you already
have in the network an appliance that can do LB. For instance if
you already have a firewall with that function.<br>
</p>
<p><br>
</p>
<p>Another solution is to make a cluster with corosync/pacemaker out
of the two servers:<br>
</p>
<p><a class="moz-txt-link-freetext" href="https://www.digitalocean.com/community/tutorials/how-to-create-a-high-availability-setup-with-corosync-pacemaker-and-floating-ips-on-ubuntu-14-04">https://www.digitalocean.com/community/tutorials/how-to-create-a-high-availability-setup-with-corosync-pacemaker-and-floating-ips-on-ubuntu-14-04</a></p>
<p><a class="moz-txt-link-freetext" href="https://linuxacademy.com/blog/linux-academy/configure-a-failover-cluster-with-pacemaker/">https://linuxacademy.com/blog/linux-academy/configure-a-failover-cluster-with-pacemaker/</a><br>
</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 1/10/20 7:16 PM, Kishore Potnuru
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAJ9122d9dX_fs5QLazObXvLpT96UnroewPrwhB1tMNKdhOFRog@mail.gmail.com">
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<div dir="ltr">
<div>Thank you all for the replies.... </div>
<div><br>
</div>
I have the test environment with the same configuration. But I
have been asked to go with same environment for HA/Resilience in
Live. <br>
<br>
Yes, I have only one Live server. It is configured in "Maildir"
format. The data stores on a Network / Shared Storage (But
definitely not local disk, its a mount point).<br>
<br>
I have been asked to create a HA/Resilience for this
environment. They gave me another server with same ram/cpu/os
and I need to configure the dovecot on it. <br>
<br>
Please provide your suggestions/steps as I am new to this kind
of environment. <br>
<br>
Is it possible, when any email comes to any one or both of the
two servers, how it will be read by the user from Outlook? How
to create the environment? <br>
<div><br>
</div>
<div>Thanks,</div>
<div>Kishore Potnuru</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Jan 10, 2020 at 7:55
AM Sami Ketola <<a href="mailto:sami.ketola@dovecot.fi"
moz-do-not-send="true">sami.ketola@dovecot.fi</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
<br>
> On 10 Jan 2020, at 9.20, Emmanuel Dreyfus <<a
href="mailto:manu@netbsd.org" target="_blank"
moz-do-not-send="true">manu@netbsd.org</a>> wrote:<br>
> <br>
> On Fri, Jan 10, 2020 at 09:07:24AM +0200, Aki Tuomi
wrote:<br>
>> Replication is not supported with mbox. Most features
are not.<br>
> <br>
> It would be nice if the document about replication could
tell<br>
> what setup works.<br>
<br>
<br>
First step in setting up HA system would be to migrate away
from mbox.<br>
<br>
Sami<br>
<br>
</blockquote>
</div>
</blockquote>
<pre class="moz-signature" cols="72">--
Best regards,
Adrian Minta
</pre>
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