oh-servers

OH infrastructure scripts, i.e. for VM provisioning and installing software on VMs.

• oh-vm-rack -- create/delete Rackspace VM
• oh-vm-cmds -- run commands on VM or locally
• manifests/ -- puppet manifests

Usage

To get help on script usage, run it without arguments.

Create configuration files

To be able to use Rackspace API create a configuration file:

touch ~/.novarc
chmod 600 ~/.novarc
cat << EOF > ~/.novarc
OS_AUTH_URL=https://identity.api.rackspacecloud.com/v2.0/
OS_VERSION=2.0
OS_AUTH_SYSTEM=rackspace
OS_REGION_NAME=DFW
OS_TENANT_NAME=<USER_ID>
OS_USERNAME=<USERNAME>
OS_PASSWORD=<API_KEY>
OS_NO_CACHE=1
export OS_AUTH_URL OS_VERSION OS_AUTH_SYSTEM OS_REGION_NAME OS_TENANT_NAME OS_USERNAME OS_PASSWORD OS_NO_CACHE
EOF

Create SSH client configuration file to allow non-interactive ssh connection to a new VM:

cat << EOF >> ~/.ssh/config
# Bypass SSH key checking
# http://linuxcommando.blogspot.sk/2008/10/how-to-disable-ssh-host-key-checking.html
Host *
    StrictHostKeyChecking no
EOF

Jenkins job configuraion sample (Build => Execute shell => Command):

#!/bin/bash

# source configuration (don't use -x!)
. ~/.novarc

# now we can print commands before executing them
set -x

OH_VM_RACK="/var/lib/jenkins/oh-servers/oh-vm-rack"
OH_VM_CMDS="/var/lib/jenkins/oh-servers/oh-vm-cmds"

# builds a VM
IP=$($OH_VM_RACK create ${JOB_NAME}_${BUILD_NUMBER})

# install SW and configure VM
$OH_VM_CMDS $IP a b c d e f

# check pipeline service is running and delete VM
nc -z $IP 8080
if [[ $? -eq 0 ]]; then
    echo "Service running on $IP, port 8080"
    $OH_VM_RACK delete ${JOB_NAME}_${BUILD_NUMBER}
    exit 0
else
    $OH_VM_RACK delete ${JOB_NAME}_${BUILD_NUMBER}
    exit 1
fi

.. don't forget the first line (#!/bin/bash), otherwise Jenkins will print out the API key!

nova client (optional)

To get a list of VMs from command line, you can use nova client.

to install it:

aptitude update
aptitude install python-pip
pip install rackspace-novaclient

commands:

nova credentials
nova list
nova flavor-list
nova image-list
nova boot test01 --flavor 2 --image 8a3a9f96-b997-46fd-b7a8-a9e740796ffd
nova delete <SERVER_ID>