def _provision(roles):
nodes = []
for value in roles.values():
nodes.extend(value)
# remove duplicate hosts
# Note(jrbalderrama): do we have to implement hash/equals in Host?
nodes = set([node.address for node in nodes])
# Provision nodes so we can run Ansible on it
remote.exec_command_on_nodes(
nodes, 'apt-get update && apt-get -y --force-yes install python',
'Installing python...')
# Bind volumes of docker in /tmp (free storage location on G5k)
remote.exec_command_on_nodes(nodes, ('mkdir -p /tmp/docker/volumes; '
'mkdir -p /var/lib/docker/volumes'),
'Creating docker volumes directory in /tmp')
remote.exec_command_on_nodes(
nodes, ('(mount | grep /tmp/docker/volumes) || '
'mount --bind /tmp/docker/volumes /var/lib/docker/volumes'),
'Bind mount')
# Bind nova local storage in /tmp
remote.exec_command_on_nodes(
nodes, 'mkdir -p /tmp/nova ; mkdir -p /var/lib/nova',
'Creating nova directory in /tmp')
remote.exec_command_on_nodes(nodes,
('(mount | grep /tmp/nova) || '
'mount --bind /tmp/nova /var/lib/nova'),
'Bind mount')
def dhcp_interfaces(c_resources):
# TODO(msimonin) add a filter
machines = c_resources["machines"]
for desc in machines:
nics = desc.get("_c_nics", [])
nics_list = [nic for nic, _ in nics]
ifconfig = ["ip link set %s up" % nic for nic in nics_list]
cmd = "%s ; dhclient %s" % (";".join(ifconfig), " ".join(nics_list))
remote.exec_command_on_nodes(desc["_c_ssh_nodes"], cmd, cmd)
def grant_root_access(c_resources):
machines = c_resources["machines"]
for desc in machines:
cmd = ["cat ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys"]
cmd.append("sudo-g5k tee -a /root/.ssh/authorized_keys")
cmd = "|".join(cmd)
remote.exec_command_on_nodes(desc["_c_nodes"],
cmd,
cmd,
conn_params={})
def exec_command_on_nodes(nodes, cmd, label, conn_params=None):
"""Execute a command on a node (id or hostname) or on a set of nodes.
Args:
nodes (list): list of targets of the command cmd. Each must be an
execo.Host.
cmd (str): string representing the command to run on the remote nodes.
label (str): string for debugging purpose.
conn_params (dict): connection parameters passed to the execo.Remote
function.
"""
remote.exec_command_on_nodes(nodes, cmd, label, conn_params)
