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Copy pathexample_loadbalancer.py
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73 lines (56 loc) · 2.29 KB
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#!/usr/bin/env python
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import time
from libcloud.loadbalancer.base import Member, Algorithm
from libcloud.loadbalancer.types import State, Provider
from libcloud.loadbalancer.providers import get_driver
def main():
cls = get_driver(Provider.RACKSPACE)
driver = cls("username", "api key", region="ord")
balancers = driver.list_balancers()
print(balancers)
# creating a balancer which balances traffic across two
# nodes: 192.168.86.1:80 and 192.168.86.2:8080. Balancer
# itself listens on port 80/tcp
new_balancer_name = "testlb" + os.urandom(4).encode("hex")
members = (Member(None, "192.168.86.1", 80), Member(None, "192.168.86.2", 8080))
new_balancer = driver.create_balancer(
name=new_balancer_name,
algorithm=Algorithm.ROUND_ROBIN,
port=80,
protocol="http",
members=members,
)
print(new_balancer)
# wait for balancer to become ready
# NOTE: in real life code add timeout to not end up in
# endless loop when things go wrong on provider side
while True:
balancer = driver.get_balancer(balancer_id=new_balancer.id)
if balancer.state == State.RUNNING:
break
print("sleeping for 30 seconds for balancers to become ready")
time.sleep(30)
# fetch list of members
members = balancer.list_members()
print(members)
# remove first member
balancer.detach_member(members[0])
# remove the balancer
driver.destroy_balancer(new_balancer)
if __name__ == "__main__":
main()