snfinv 0.1.2

Dynamic ansible inventory for Synnefo IaaS nodes

snfinv is a a simplistic virtual machine provision and dynamic ansible inventory tool to be used on Synnefo IaaS deployments.

Install

Install using pip:

$ pip install snfinv

Provisioning

Create an inventory.yml and define your nodes configuration:

provision:
    networks:
        priv1:
            type: MAC_FILTERED
            cidr: 10.12.21.0/24

    coreos_node1:
        project: xxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx
        flavour:
            cpu: 2
            ram: 1024
            disk: 10
        image: b9236d02-0904-4d00-8967-3279f0053d18 // CoreOS image
        floating_ips: [auto, 83.212.221.53]
        groups: ['sql']
        keys: ['/home/user/.ssh/id_rsa.pub']
        users: ['core']
        networks:
            priv1:
                ip: 10.12.21.1
        vars:
            ansible_var1: 'value'

    coreos_node2:
        project: xxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx
        flavour:
            cpu: 2
            ram: 1024
            disk: 10
        image: b9236d02-0904-4d00-8967-3279f0053d18 // CoreOS image
        floating_ips: [auto]
        groups: ['web']
        keys: ['/home/user/.ssh/id_rsa.pub']
        users: ['core']
        networks:
            priv1:
                ip: 10.12.21.1
        vars:
            ansible_var1: 'value'

You can then provision the above specification by running within the directory the file above was created:

$ snfinv --provision

Provision script is reentrant and it won’t try to recreate existing resources but it is not smart enough to delicately re-assemble flimsy configuration changes such as changes of vm flavor/ips/keys etc.

Ansible inventory

snfinv tool provides the required command line interface to be able to use is as a dynamic ansible inventory:

$ ansible `which snfinv` "coreos_node2" -m shell -a ls

Additional arguments

• –dry

  Used in conjuction with –provision. If set no calls will be sent to the synnefo api endpoints.

• –list-hosts

  Outputs /etc/hosts friendly list of the available nodes.

• –config=<path-to-inventory.yml>

  Provide a custom inventory.yml file. By default ./inventory.yml is used. SNFINV_CONFIG environment variable may also be used to declare the path to the provision configuration file.

• –kamaki-config

  Use a custom location for the kamaki config file.