<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Oct 27, 2016 at 11:42 AM, Jonas Israelsson <span dir="ltr"><<a href="mailto:jonas.israelsson@elementary.se" target="_blank">jonas.israelsson@elementary.se</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div class="gmail-m_4412695849928494776moz-cite-prefix">On 27/10/16 11:34, Simone Tiraboschi
wrote:<br>
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<div class="gmail_quote">On Thu, Oct 27, 2016 at 10:17 AM,
Jonas Israelsson <span dir="ltr"><<a href="mailto:jonas.israelsson@elementary.se" target="_blank">jonas.israelsson@elementary.<wbr>se</a>></span>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Greetings.<br>
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We are under the impression if the machine that runs the
oVirt-engine looses it's primary nameserver, the oVirt
web-ui becomes more or less unresponsive.<br>
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By primary I mean the nameserver at the top of resolv.conf<br>
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In 3.x it was a disaster, 4.0 is far better, but for
instance trying to import storage domains just gives you a
spinning wheel when it's searching for nfs-domains to
display.<br>
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By reorder the nameservers in resolv.conf we got it
working yesterday during our 3.6 ---> 4.0 migration.<br>
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Could someone confirm this, please ?<br>
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<div>Yes, in order to correctly work, oVirt requires a
working DNS also for reverse resolution.</div>
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Well it's not like the machine (nor oVirt) doesn’t have a working
DNS. My point is, I'm under the impression it only uses one (the
first) from resolv.conf and ignores the rest.<br>
<br></div></blockquote><div><br></div><div>Not really, the default behavior is:</div><br>(The algorithm used is to try a name server, and if the query times out, try the next, until out of name servers, then repeat trying all the name servers until a maximum number of retries are made.)<div>From:</div><div><a href="https://linux.die.net/man/5/resolver">https://linux.die.net/man/5/resolver</a><br></div><div><br></div><div>That's why you see delays if the first DNS entry is not correctly working.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF">
Rgds,<br>
Jonas<br>
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