A 12c Flex Cluster Installation Walk-thru

Let’s start the 12c Flex install, with the execution of the traditional runInstaller script

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Let’s choose Install 12c Flex Cluster

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And yes we picking English… since we live in English-land

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Now let’s specify the Scan information and yes, we’ll need to define GNS and since we have to use GNS, we’ll need to get DNS domain delegation setup. In our case we have us.viscosityna-test.com as the sub-domain

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This is the new stuff!! We define which nodes in the cluster will be Hubs and which will be Leaf. Note, you’ll ocassionaly hear the terms Hub and RIM be used interchangeably. It just historical!

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Let’s specify the interfaces. You all have seen this screen before. But it now got a small twist to it. You can specify a separate “ASM &Private” networks.

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Now the validation!

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This step is new too. You have the option to configure Grid Infrastructure Repository,
which is used for storing Cluster Health Monitor (CHM) data. In 11gR2 this was stored
in a Berkley DB database and was created by default. Now this option allows users to
specify a Oracle Database to store the CHM data. This database is a single instance
database that is named MGMTDB by default. It is an internal CRS resource, which has
HA-failover capabilities. I’ll cover this topic in more detail later, but I should
mention that this is the only opportunity to create this repository; i,e, you have
uninstall/reinstall to get this GI repos option.

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Now the fun stuff! Let’s create the ASM disk group. Note, that if you are configuring a GI repo, then you’ll need a minimum of 5GB disk (for testers and laptop folks).

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Now define passwords

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Verify…and yes we’re cool w/ the passwords

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No IPMI

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No define the group definitions

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Where we gonna put the Oracle Home and Oracle Base

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Now this really cool. I can specify the root password/credentials, for downstream root required actions.

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Gotta run some fix some things, execute fixup.sh script

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Now off to the races !!!

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