Friday, January 6, 2012

How to configure worker node - part 2

Compute node configuration - continued

We execute the following commands:

This command is supposed to synchronize the database:

/usr/bin/nova-manage db sync
Now we have to create users and projects. We call both users and projects "nova"

/usr/bin/nova-manage user admin nova
/usr/bin/nova-manage project create nova nova
/usr/bin/nova-manage network create 1 256

We check that users and projects were created correctly:

/usr/bin/nova-manage project list

/usr/bin/nova-manage user list

Create Certifications

On the controller node execute

mkdir –p /root/creds

/usr/bin/python /usr/bin/nova-manage project zipfile nova nova /root/creds/

If you encounter a python error, then apply the python patch described few posts earlier.

Create /root/creds on the compute node and copy the file there. Then unpack it

unzip /root/creds/ -d /root/creds/

A few files will appear, among them
/root/creds/novarc . This file needs to be appended to .bashrc, but there is a catch:
first line of the file has an error and has to be replaced:

Original line:

NOVA_KEY_DIR=$(pushd $(dirname $BASH_SOURCE)>/dev/null; pwd; popd>/dev/null)

has to be replaced with


The content of novarc file now is


export EC2_URL=""
export S3_URL=""
export EC2_USER_ID=42 # nova does not use user id, but bundling requires it
export EC2_PRIVATE_KEY=${NOVA_KEY_DIR}/pk.pem
export EC2_CERT=${NOVA_KEY_DIR}/cert.pem
export NOVA_CERT=${NOVA_KEY_DIR}/cacert.pem
export EUCALYPTUS_CERT=${NOVA_CERT} # euca-bundle-image seems to require this set
alias ec2-bundle-image="ec2-bundle-image --cert ${EC2_CERT} --privatekey ${EC2_PRIVATE_KEY} --user 42 --ec2cert ${NOVA_CERT}"
alias ec2-upload-bundle="ec2-upload-bundle -a ${EC2_ACCESS_KEY} -s ${EC2_SECRET_KEY} --url ${S3_URL} --ec2cert ${NOVA_CERT}"
export NOVA_USERNAME="nova"
export NOVA_URL=""

Where "XXXX.." strings denote keys which I do not post here, for security.

The content of novarc file should now be added to bashrc:

cat /root/creds/novarc >> ~/.bashrc source ~/.bashrc

This should be done both on compute and controller nodes.

Enable access to worker node

First unset a proxy and then do:

euca-authorize -P icmp -t -1:-1 default euca-authorize -P tcp -p 22 default

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