Open Stack

Hi Team,

I tried to do the following:
1) build an image for devstack node
2) upload it to glance.
3) use that image it in nodepool, by running nodepool image-update


To build the image I execute the following:

DISTRO="ubuntu" bash tools/build-image.sh
(As documented in [1])

When the image is created I uploaded it to glance and tried to run 
"nodepool image-update"
My nodepool.yaml file is very simple:

script-dir: /etc/nodepool/scripts
elements-dir: /etc/nodepool/elements
images-dir: /opt/nodepool_dib

cron:
  cleanup: '*/1 * * * *'
  check: '*/15 * * * *'
  image-update: '14 14 * * *'

zmq-publishers:
  - tcp://ci-jenkins-master.openstacklocal:8888

gearman-servers:
  - host: ci-zuul.openstacklocal

labels:
  - name: ubuntu-trusty-devstack
    image: ubuntu-trusty-devstack
    min-ready: 1
    providers:
      - name: ibm-ci

providers:
  - name: ibm-ci
    cloud: osic-cloud2
    max-servers: 1
    images:
      - name: ubuntu-trusty-devstack
        base-image: 'devstack-gate-new'         <----- This is the image 
name in the cloud (glance)
        min-ram: 4096
        setup: prepare_node_devstack.sh
        username: jenkins
        private-key: /home/nodepool/.ssh/id_rsa
        config-drive: true

targets:
  - name: ci-jenkins-master.openstacklocal

diskimages:
  - name: ubuntu-trusty-devstack



The problem is that nodepool's image-update command exits with timeout 
while trying to ssh connect:

2016-04-03 16:33:37,167 INFO nodepool.utils: Auth exception for 
root at 9.xxx.xxx.xxx. Try number 4...


I looked in nodepool.py [2]
And found the following code:

    def bootstrapServer(self, server, key, use_password=False):
        log = logging.getLogger("nodepool.image.build.%s.%s" %
                                (self.provider.name, self.image.name))

        ssh_kwargs = dict(log=log)
        if not use_password:
            ssh_kwargs['pkey'] = key
        else:
            ssh_kwargs['password'] = server['admin_pass']

        host = utils.ssh_connect(server['public_ip'], 'root', ssh_kwargs,  
 
                                 timeout=CONNECT_TIMEOUT)
    def bootstrapServer(self, server, key, use_password=False):
        log = logging.getLogger("nodepool.image.build.%s.%s" %
                                (self.provider.name, self.image.name))

        ssh_kwargs = dict(log=log)
        if not use_password:
            ssh_kwargs['pkey'] = key
        else:
            ssh_kwargs['password'] = server['admin_pass']

        host = utils.ssh_connect(server['public_ip'], 'root', ssh_kwargs,
                                 timeout=CONNECT_TIMEOUT)

        if not host:
            # We have connected to the node but couldn't do anything as 
root
            # try distro specific users, since we know ssh is up (a 
timeout
            # didn't occur), we can connect with a very sort timeout.
            for username in ['ubuntu', 'fedora', 'cloud-user', 'centos',
                             'debian']:
                try:
                    host = utils.ssh_connect(server['public_ip'], 
username,
                                             ssh_kwargs,
                                             timeout=10)
                    if host:
                        break
                except:
                    continue

        if not host:
            raise Exception("Unable to log in via SSH") 
        if not host:
            # We have connected to the node but couldn't do anything as 
root
            # try distro specific users, since we know ssh is up (a 
timeout
            # didn't occur), we can connect with a very sort timeout.
            for username in ['ubuntu', 'fedora', 'cloud-user', 'centos',
                             'debian']:
                try:
                    host = utils.ssh_connect(server['public_ip'], 
username,
                                             ssh_kwargs,
                                             timeout=10)
                    if host:
                        break
                except:
                    continue

        if not host:
            raise Exception("Unable to log in via SSH") 


This code tries to use the key that was generated earlier (by paramiko) in 
order to ssh_connect to root.
The problem is that no one put that ssh key into root's authorized_keys, 
and the connection fails.

Is it a bug? 

[1] 
https://github.com/openstack-infra/project-config/tree/master/nodepool/elements

[2] 
https://git.openstack.org/cgit/openstack-infra/nodepool/tree/nodepool/nodepool.py


Thanks,
Isaac Beckman

Office: +972-3-6897874
Fax: +972-3-6897755
Mobile: +972-50-2680180
Email: isaacb at il.ibm.com

IBM XIV, Cloud Storage Solutions (previously HSG)
www.ibm.com/storage/disk/xiv
 

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