Prepare the Configuration File

To upgrade to Eucalyptus 3.1.1 on CentOS:

Note

If you're upgrading from 3.1.0 to 3.1.2, you can skip this section.

Important

The steps in this section should be performed on all machines with Eucalyptus installed.

Remove any hand-written repository files for earlier versions of Eucalyptus and Euca2ools from /etc/yum.repos.d.
Configure the Euca2ools package repository on each host that will run a Eucalyptus component or Euca2ools:
```
rpm -Uvh http://downloads.eucalyptus.com/software/euca2ools/2.1/rhel/5/x86_64/euca2ools-release-2.1.noarch.rpm
```
Configure the Eucalyptus package repository on each host that will run a Eucalyptus component:
```
rpm -Uvh http://downloads.eucalyptus.com/software/eucalyptus/3.1/rhel/5/x86_64/eucalyptus-release-3.1.noarch.rpm
```
Configure the EPEL package repository on each host that will run a Eucalyptus component or Euca2ools:
```
rpm -Uvh http://downloads.eucalyptus.com/software/eucalyptus/3.1/rhel/5/x86_64/epel-release-5.noarch.rpm
```

Note

If upgrading from Eucalyptus 2.0, you can skip this step. This step is only necessary if you are upgrading from Eucalyptus 3.0.

If you have a Eucalyptus subscription, you will have received a package that grants you access to VMware and SAN components. If you are upgrading from Eucalyptus 3.0, you must install this package.

rpm -Uvh eucalyptus-enterprise-release-3.1-1.noarch.rpm