Configuring a private DNS server on Openfiler for use with Oracle RAC 12C on Virtual Boxes

Configuring a private DNS server on Openfiler for use with Oracle RAC 12C on Virtual Boxes

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This post has already been published in the past on the AMIS-blog.

To build an Oracle 12C RAC database – on Virtual Boxes – there’s at least shared storage needed for ASM, and a DNS-server for the SCAN-addresses. Several methods can be used for this, but  for the storage in my private project I chose Openfiler, an open source management storage tool, on a separate Virtual Box. It’s like a SAN in real life (the complete system will be three Virtual Boxes: two RAC-nodes and 1 storage Virtual Box). Version Openfiler: 2.99.

O.k. storage is clear, but what about DNS? The quickest and dirtiest way to accomplish this is to use Dnsmasq on every RAC-node. A nice blogpost about this subject is here to be found.

But what I want is a separate DNS-server, just as in real life. The perfect candidate is to use the separate Openfiler Virtual Box

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My RAC project with Openfiler, part II – grid infrastructure and database

My RAC project with Openfiler, part II – grid infrastructure and database

This is the second post of my little project of building my own RAC on my Windows7-desktop (64-bits, 8GB RAM), using 3 VM’s (VM-workstation , 7.1.3 build-324285) :

  • 2 VM’s for two RAC-nodes, based on OEL 5.5, 11.2.0.2 for infra, and database.
  • 1 VM as my own SAN, based on Openfiler 2.3 (free), for ASM.

My goal: just a little bit hands-on experience with Openfiler, and do some testing with RAC 11gr2, and especially 11.2.0.2. Maybe it’s helpful for somebody else, so I’ll post my experiences. Steps I’m gonna perform.

–          The first post handled the following:

1.       Planning my installation
2.       Create a VM with OpenFiler
3.       Configure Openfiler
 

–          The second post (this post):

4.       Create a VM as node rac1 and configure ASM
5.       Create a VM as node rac2
6.       Install Oracle RAC Infrastructure
 
7.       Install Oracle RAC software

8.       Install Oracle RAC database

 

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My RAC project with Openfiler, part II – grid infrastructure and database

My RAC project with Openfiler, part I – Openfiler

My current job doesn’t offer me at the moment the opportunity to play with RAC or other stuff, so I decided to build my own RAC on my Windows7-desktop (64-bits, 8GB RAM), using 3 VM’s (VM-workstation , 7.1.3 build-324285) :

  • 2 VM’s for two RAC-nodes, based on OEL 5.5, 11.2.0.2 for infra and database.
  • 1 VM as my own storage, based on Openfiler 2.3 (free) and ASM as storage manager.

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Powered by rPath Linux, Openfiler is a free browser-based network storage management utility that delivers file-based Network Attached Storage (NAS) and block-based Storage Area Networking (SAN) in a single framework. Openfiler supports CIFS, NFS, HTTP/DAV, FTP, however, we will only be making use of its iSCSI capabilities to implement an inexpensive SAN for the shared storage components required by Oracle RAC 11g. A 500GB internal hard drive will be connected to the network storage server (sometimes referred to in this article as the Openfiler server) through an internal embedded SATA II controller. The Openfiler server will be configured to use this disk for iSCSI based storage and will be used in our Oracle RAC 11g configuration to store the shared files required by Oracle Clusterware as well as all Oracle ASM volumes.

This piece of text is taken from another website: http://www.idevelopment.info/data/Oracle/DBA_tips/Oracle11gRAC/CLUSTER_10.shtml

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My goal: just a little bit hands-on experience with Openfiler, and do some testing with RAC 11gr2, and especially 11.2.0.2. Maybe it’s helpful for somebody else, so I’ll post my experiences. Steps I’m gonna perform.

–          The first post (this post) :

1.       Planning my installation
2.       Create a VM with OpenFiler
3.       Configure Openfiler

–          The second post:

4.       Create a VM as node rac1 and configure ASM
5.       Create a VM as node rac2
6.       Install Oracle RAC Infrastructure
 
7.       Install Oracle RAC Database software

8.       Install Oracle RAC Database

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iscsiadm discovery: no output with Openfiler.

iscsiadm discovery: no output with Openfiler.

I was building my own Oracle RAC 11g cluster (11.2.0.2) with Openfiler as my shared storage. Two VM’s as my rac-cluster, one VM with Openfiler as my own SAN (not using the applicance, used the iso-file).  Followed the instructions of the article of Jeffrey Hunter how to build a RAC on OEL and iSCSI, however this article is not based on VM. Will publish my experiences later on.

My Openfiler-VM (named it ‘Openfiler1’) was ready, given access to my both nodes on iSCSI-level, and now I want my rac1-node to discover the iSCSI-drives on my Openfiler-VM.

Command I used on node ‘rac1’, where ‘openfiler1’ is my Openfiler-VM, on a privileged network:

iscsiadm -m discovery -t st –p openfiler1-priv

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