Hi all,
I am trying to understand how RAC works actually.
Hence the questions below
1) Assuming i have a 2 nodes cluster, there will be actually
2 x VIP
2 x Production IP
3 x SCAN-VIP
2 x Internal IP (for interconnect)
2) My questions are
a) are the VIP on the nodes tie to the interface card ? e.g eth0:1 ?
b) if a node is down, will the VIP1 in node1 be move the eth0:1 in node 2 ? (how about VIP2 in node2 then ?)
c) will there then be a unsolicited re-arp send out to all clients , but clients will still connect to VIP1 in node2 ? or VIP2 in node2 ?
d) why do we need 3 scan VIP if we only have 2 nodes ?
e) if I have 2 nodes, where will the scan-listeners be setup ? in node1 or node2 ?
f) i understand that scan-vip are not tie to the network interface, but in that case, how does a client know where to connect to ? wouldn't the network layer in the nodes reject an ip that is not tie to its interface ?
Regards,
Noob