def configure_kubernetes_master():
"""Configure the kubernetes master.
Sets up the master node and stores the necessary settings inside the node
instance's runtime properties, which are required by worker nodes in order
to join the kubernetes cluster.
"""
ctx.logger.info('Setting up kubernetes master node')
prepare_kubernetes_script()
# FIXME Re-think this.
client = MistConnectionClient().client
machine = MistConnectionClient().machine
# Token for secure master-worker communication.
token = '%s.%s' % (random_string(length=6), random_string(length=16))
ctx.instance.runtime_properties['master_token'] = token.lower()
# Store kubernetes dashboard credentials in runtime properties.
ctx.instance.runtime_properties.update({
'auth_user':
ctx.node.properties['auth_user'],
'auth_pass':
ctx.node.properties['auth_pass'] or random_string(10),
})
ctx.logger.info('Installing kubernetes on master node')
# Prepare script parameters.
script_params = "-u '%s' " % ctx.instance.runtime_properties['auth_user']
script_params += "-p '%s' " % ctx.instance.runtime_properties['auth_pass']
script_params += "-t '%s' " % ctx.instance.runtime_properties[
'master_token'] # NOQA
script_params += "-r 'master'"
# Run the script.
script = client.run_script(
script_id=ctx.instance.runtime_properties['script_id'],
su=True,
machine_id=machine.id,
cloud_id=machine.cloud.id,
script_params=script_params,
)
ctx.instance.runtime_properties['job_id'] = script['job_id']
def configure_kubernetes_worker():
"""Configure a new kubernetes node.
Configures a new worker node and connects it to the kubernetes master.
"""
# Get master node from relationships schema.
master = ctx.instance.relationships[0]._target.instance
ctx.instance.runtime_properties.update({
'script_id':
master.runtime_properties.get('script_id', ''),
'master_ip':
master.runtime_properties.get('master_ip', ''),
'master_token':
master.runtime_properties.get('master_token', ''),
})
ctx.logger.info('Setting up kubernetes worker')
prepare_kubernetes_script()
# FIXME Re-think this.
client = MistConnectionClient().client
machine = MistConnectionClient().machine
ctx.logger.info('Configuring kubernetes node')
# Prepare script parameters.
script_params = "-m '%s' " % ctx.instance.runtime_properties['master_ip']
script_params += "-t '%s' " % ctx.instance.runtime_properties[
'master_token'] # NOQA
script_params += "-r 'node'"
# Run the script.
script = client.run_script(
script_id=ctx.instance.runtime_properties['script_id'],
su=True,
machine_id=machine.id,
cloud_id=machine.cloud.id,
script_params=script_params,
)
ctx.instance.runtime_properties['job_id'] = script['job_id']