February 13th, 2009
st0ma
Hardware and package requirements
1. Hardware
Here is a small list of hardware requirements that we have satisfied by creating our virtual machine as it is:
at least 1 GB of RAM
minimum of 1GB of swap space
/tmp directory is said to be minimum 400MB which we have spare in our / mount point
2. package requirements
Since time will be the most important variable for the Oracle RAC it is a must to have all nodes up to date using NTP deamon.
In my case I use a local ntp server and I configure the /etc/ntp.conf to poll that server on boot.
In addition to this I have added a cronjob as root to restart the xntpd service every hour at the twentieth minute, to make sure every node will be generally up to date even If I perform snaphosts and reverts forgetting about the time.
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Categories: Database, ESX, ESXi, Linux, Oracle, SLES, VMware Tags: ESXi, Linux, Oracle, SLES, VMware
February 13th, 2009
st0ma
Network and hostname configuration of the nodes
Once you have converted the the first virtual machine that you have installed, you have a mirrored copy of it.
This means that the hostnames of the two machines will be identical and this has to be fixed.
Each Node must have at least 2 network adapters: one for the public and one for the private interconnect. In addition , the interface names associated with the network adapters for each network must be the same on all nodes.
For the public network each adapter must support TCP/IP. For the private network, the interconnect must support UDP for Linux. Gigabit ethernet or an equivalent is recommended.
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Categories: Database, ESX, ESXi, Linux, Oracle, SLES, VMware Tags: ESXi, Linux, Oracle, SLES, VMware