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	<title>Cristian Bradiceanu &#187; DNS</title>
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	<link>http://blog.bradiceanu.net</link>
	<description>just another (technical) blog</description>
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		<title>n-am.ro and nuam.ro domains</title>
		<link>http://blog.bradiceanu.net/2007/05/19/n-amro-and-nuamro-domains/</link>
		<comments>http://blog.bradiceanu.net/2007/05/19/n-amro-and-nuamro-domains/#comments</comments>
		<pubDate>Sat, 19 May 2007 10:16:09 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[DNS]]></category>
		<category><![CDATA[E-mail]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[Personal]]></category>

		<guid isPermaLink="false">http://vps.bradiceanu.net/wordpress/?p=45</guid>
		<description><![CDATA[Just registered n-am.ro and nuam.ro domains. Web sites are &#8216;parked&#8217; for now until I choose what to put there. E-mail web access at mail.n-am.ro. Also, the Start Page at start.n-am.ro, Calendar at calendar.n-am.ro and Docs and Spreadsheets at docs.n-am.ro. For mail, nuam.ro is aliased to n-am.ro. If you have ideas about web site content or [...]]]></description>
			<content:encoded><![CDATA[<p>Just registered <a href="http://n-am.ro/" title="n-am.ro" target="_blank">n-am.ro</a> and <a href="http://nuam.ro/" title="nuam.ro" target="_blank">nuam.ro</a> domains.</p>
<p>Web sites are &#8216;parked&#8217; for now until I choose what to put there.</p>
<p>E-mail web access at <a href="http://mail.n-am.ro/" target="_blank">mail.n-am.ro</a>.</p>
<p>Also, the Start Page at <a href="http://start.n-am.ro" title="start.n-am.ro" target="_blank">start.n-am.ro</a>, Calendar at <a href="http://calendar.n-am.ro" title="calendar.n-am.ro" target="_blank">calendar.n-am.ro</a> and Docs and Spreadsheets at <a href="http://docs.n-am.ro" title="docs.n-am.ro" target="_blank">docs.n-am.ro</a>. For mail, nuam.ro is aliased to n-am.ro.</p>
<p>If you have ideas about web site content or want an e-mail address in these domains let me know <img src='http://blog.bradiceanu.net/wp-includes/images/smilies/icon_smile.gif' alt=':-)' class='wp-smiley' />  Same for <a href="http://www.mumu.ro" title="mumu.ro" target="_blank">mumu.ro</a> domain.</p>
<p>DNS hosting kindly provided by <a href="http://www.editdns.net/" title="EditDNS" target="_blank">EditDNS</a>.</p>
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		<title>PowerDNS recursor problems</title>
		<link>http://blog.bradiceanu.net/2005/11/12/powerdns-recursor-problems-2/</link>
		<comments>http://blog.bradiceanu.net/2005/11/12/powerdns-recursor-problems-2/#comments</comments>
		<pubDate>Sat, 12 Nov 2005 14:23:45 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[DNS]]></category>
		<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[Work]]></category>

		<guid isPermaLink="false">http://vps.bradiceanu.net/wordpress/?p=20</guid>
		<description><![CDATA[It seems that PowerDNS&#8216;s pdns_recursor crashes on FreeBSD under load. I&#8217;ve replaced it by a bind recursor. Excerpt from named.conf: options { directory "/etc/namedb"; pid-file "/var/run/named/pid"; dump-file "/var/dump/named_dump.db"; statistics-file "/var/stats/named.stats"; listen-on port XXXX { 127.0.0.1; }; }; zone "." { type hint; file "named.root"; };]]></description>
			<content:encoded><![CDATA[<p>It seems that <a href="http://www.powerdns.com/">PowerDNS</a>&#8216;s pdns_recursor crashes on <a href="http://www.freebsd.org/">FreeBSD</a> under load.</p>
<p>I&#8217;ve replaced it by a <a href="http://www.isc.org/sw/bind/">bind</a> recursor. Excerpt from named.conf:</p>
<p><code><br />
options {<br />
        directory       "/etc/namedb";<br />
        pid-file        "/var/run/named/pid";<br />
        dump-file       "/var/dump/named_dump.db";<br />
        statistics-file "/var/stats/named.stats";</p>
<p>        listen-on       port XXXX { 127.0.0.1; };<br />
};</p>
<p>zone "." {<br />
        type hint;<br />
        file "named.root";<br />
};<br />
</code></p>
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		<title>PowerDNS recursor problems</title>
		<link>http://blog.bradiceanu.net/2005/11/09/powerdns-recursor-problems/</link>
		<comments>http://blog.bradiceanu.net/2005/11/09/powerdns-recursor-problems/#comments</comments>
		<pubDate>Wed, 09 Nov 2005 11:55:22 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[DNS]]></category>
		<category><![CDATA[FreeBSD]]></category>

		<guid isPermaLink="false">http://vps.bradiceanu.net/wordpress/?p=18</guid>
		<description><![CDATA[It seems that pdns_recursor from 2.9.19 dies under light load on FreeBSD.]]></description>
			<content:encoded><![CDATA[<p>It seems that pdns_recursor from 2.9.19 dies under light load on FreeBSD.</p>
]]></content:encoded>
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		<item>
		<title>New DNS server up</title>
		<link>http://blog.bradiceanu.net/2005/10/24/new-dns-server-up/</link>
		<comments>http://blog.bradiceanu.net/2005/10/24/new-dns-server-up/#comments</comments>
		<pubDate>Mon, 24 Oct 2005 08:44:52 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[DNS]]></category>
		<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Work]]></category>

		<guid isPermaLink="false">http://vps.bradiceanu.net/wordpress/?p=15</guid>
		<description><![CDATA[New production DNS server is up since Saturday night. It runs PowerDNS with a MySQL 4.1 backend on FreeBSD 5.4. Complete with web (SSL) administration and statistics. So far: Uptime: 18 hours Queries/second, 1, 5, 10 minute averages: 6.4, 5.12, 5.15. Max queries/second: 40.1 Cache hitrate, 1, 5, 10 minute averages: 24%, 22%, 20% Backend [...]]]></description>
			<content:encoded><![CDATA[<p>New production DNS server is up since Saturday night.</p>
<p>It runs <a href="http://www.powerdns.com/">PowerDNS</a> with a <a href="http://dev.mysql.com/">MySQL</a> 4.1 backend on <a href="http://www.freebsd.org/">FreeBSD</a> 5.4. Complete with web (SSL) administration and statistics.</p>
<p>So far:<br />
<code><br />
Uptime: 18 hours Queries/second, 1, 5, 10 minute averages: 6.4, 5.12, 5.15. Max queries/second: 40.1<br />
Cache hitrate, 1, 5, 10 minute averages: 24%, 22%, 20%<br />
Backend query cache hitrate, 1, 5, 10 minute averages: 63%, 62%, 62%<br />
Backend query load, 1, 5, 10 minute averages: 10, 8.2, 8.59. Max queries/second: 26.7<br />
Total queries: 313999. Question/answer latency: 0.678ms<br />
</code></p>
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		<item>
		<title>PowerDNS</title>
		<link>http://blog.bradiceanu.net/2005/10/07/powerdns/</link>
		<comments>http://blog.bradiceanu.net/2005/10/07/powerdns/#comments</comments>
		<pubDate>Fri, 07 Oct 2005 19:42:56 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[DNS]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Work]]></category>

		<guid isPermaLink="false">http://vps.bradiceanu.net/wordpress/?p=7</guid>
		<description><![CDATA[While searching for a secure DNS server with web administration, run over PowerDNS. Seems to work fine, no problems noted so far. (Setup: MySQL backend, own pdns_recursor). PowerDNS has a nice web Operational Monitor: PDNS 2.9.18 Main Page Uptime: 6.75 hours Queries/second, 1, 5, 10 minute averages: 2.39, 2.57, 2.46. Max queries/second: 4.64 Cache hitrate, [...]]]></description>
			<content:encoded><![CDATA[<p>While searching for a secure DNS server with web administration, run over <a href="http://www.powerdns.com/">PowerDNS</a>.</p>
<p>Seems to work fine, no problems noted so far. (Setup: <a href="http://www.mysql.org">MySQL</a> backend, own pdns_recursor).</p>
<p>PowerDNS has a nice web <em>Operational Monitor</em>:<br />
<code><br />
PDNS 2.9.18 Main Page<br />
Uptime: 6.75 hours Queries/second, 1, 5, 10 minute averages: 2.39, 2.57, 2.46. Max queries/second: 4.64<br />
Cache hitrate, 1, 5, 10 minute averages: 5.4%, 10%, 10%<br />
Backend query cache hitrate, 1, 5, 10 minute averages: 73%, 63%, 59%<br />
Backend query load, 1, 5, 10 minute averages: 4.09, 5.44, 5.57. Max queries/second: 13.3<br />
Total queries: 51968. Question/answer latency: 0.024ms<br />
</code></p>
<p>Web administration: <a href="http://www.poweradmin.org/">PowerAdmin</a> (<a href="http://www.php.net">PHP</a>, <a href="http://www.mysql.org">MySQL</a>).</p>
<p>After almost 20 hours uptime:<br />
<code><br />
Uptime: 19.3 hours Queries/second, 1, 5, 10 minute averages: 1.38, 2.01, 1.97. Max queries/second: 5.62<br />
Cache hitrate, 1, 5, 10 minute averages: 9.4%, 9.2%, 10%<br />
Backend query cache hitrate, 1, 5, 10 minute averages: 53%, 55%, 55%<br />
Backend query load, 1, 5, 10 minute averages: 3.57, 5, 4.75. Max queries/second: 13.3<br />
Total queries: 125913. Question/answer latency: 0.022ms<br />
</code></p>
<p>Test machine setup:</p>
<ul>
<li><a href="http://www.amd.com">AMD</a> Sempron(tm) 2200+</li>
<li>512MB RAM</li>
<li>custom-compiled 2.4.31 linux kernel on <a href="http://www.slackware.com">slackware</a> 10.1-based distribution</li>
</ul>
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