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virtual ip

Posted on 2013-06-01
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How we will create virtual ip address in rac

is it present in ifconfig output or we have to create it..
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Question by:walkerdba
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by:simon3270
ID: 39214020
Sorry, misread that as "secondary" rather than virtual.  I'll let others answer...
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But I would note that in this sort of environment (where a VIP is used as a floating address, which is only assigned to one "active" node in a cluster), you don't configure Virtual IP addresses in ifconfig - the software which specifies the VIP (in this case, Oracle) has to configure the IP address itself, so that it can remove the address from a failed node and add it to a backup node if necessary.  You *do* add the same VIP entry to the /etc/hosts files on the two machines (or three, or four - however many in your cluster), or define it in DNS if you are using that.  If you did manually define the VIP on two nodes in the cluster through ifconfig, you would have two nodes with the same IP address at the same time, which will not work.

You should define the VIPs within Oracle (I think it may be $ORA_CRS_HOME/bin/VIPCA).
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by:walkerdba
ID: 39219939
yes
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