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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE">Hi Yves,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US" style="font-size:10.0pt;font-family:Wingdings;color:windowtext;mso-fareast-language:DE"><span style="mso-list:Ignore">Ø<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><tt><span lang="EN-US" style="font-size:10.0pt">NDB requires a minimum of 4 nodes for HA...</span></tt><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE">I understood that in NDB-Cluster the concept of „nodes” has nothing to do with physical (or virtual) hosts but with running
instances / processes. That’s at least, what can be derived from <a href="http://www.howtoforge.com/setting-up-a-loadbalanced-mysql-cluster-with-mysql5.1">
http://www.howtoforge.com/setting-up-a-loadbalanced-mysql-cluster-with-mysql5.1</a> and from
<a href="http://dev.mysql.com/doc/refman/5.1/en/mysql-cluster-overview.html">http://dev.mysql.com/doc/refman/5.1/en/mysql-cluster-overview.html</a>.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE">Too me it looks as if NDB-Cluster is supposed to be set up as a (n>1)+1 cluster*, where the n>1 hosts can carry mysqld
and ndb and the +1 host is supposed to carry the mysql cluster manager. Please correct me, if I’m wrong of if this setup is possible, but (for some reason) is unwise / unstable / unsuitable for productive usage.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE">Thanks in advance,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:DE">Andreas<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:DE">*The first links speaks of an loadbalanced mysql cluster and thus needs two further nodes, which carry the load balancing software.<o:p></o:p></span></p>
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