import logging
import requests
import time
import docker
import asyncio
import sys
import os
import rov_server_config
import utils
from concurrent.futures import ThreadPoolExecutor
logging.basicConfig(level=logging.INFO,
format='%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s',
datefmt='%a, %d %b %Y %H:%M:%S')
health_instances = []
ess_instances = []
def server_health_check(client, instance_id):
"""
服务健康检查
:param client: 客户端连接
:param instance_id: instanceId
:return:
"""
global health_instances
ip_address = utils.get_ip_address(client=client, instance_id=instance_id)
while True:
health_check_url = f"http://{ip_address}:5001/healthcheck"
try:
http_code = requests.get(health_check_url).status_code
except:
logging.info("images is downloading")
http_code = 0
if http_code == 200:
health_instances.append((instance_id, ip_address))
break
else:
time.sleep(10)
def restart(slb_client, instance_id, image_name):
"""重启容器并探活"""
# 1. 获取ip
ip_address = utils.get_ip_address(client=slb_client, instance_id=instance_id)
logging.info(f"ip address：{instance_id}/{ip_address}")
# 3. 重启容器
docker_client = docker.DockerClient(base_url=f'tcp://{ip_address}:2375', timeout=60)
image_id = docker_client.containers.get(image_name)
image_id.restart()
logging.info(f"docker restart finished, ip address：{instance_id}/{ip_address}")
time.sleep(5)
# 4. 探活
server_health_check(slb_client, instance_id)
logging.info(f"health check finished, ip address：{instance_id}/{ip_address}")
async def server_restart_all(slb_client, instance_id_list, image_name, max_workers):
try:
# 1. 摘流量
utils.set_instance_weight_process(client=slb_client,
slb_id=rov_server_config.slb_id,
instance_id_list=instance_id_list,
weight_list=[(0, 60)])
logging.info(f"set weight with 0 finished.")
# 2. 异步重启 & 探活
global health_instances
loop = asyncio.get_running_loop()
executor = ThreadPoolExecutor(max_workers=max_workers)
tasks = [
loop.run_in_executor(executor, restart, *args) for args in
[(slb_client, instance_id, image_name) for instance_id in instance_id_list]
]
await asyncio.wait(tasks)
logging.info(f"health instances count: {len(health_instances)}, {health_instances}")
# 3. 挂载流量
if len(health_instances) == len(instance_id_list):
time.sleep(30)
add_weight_list = [(10, 30), (20, 20), (40, 10), (60, 10), (80, 10), (100, 10)]
utils.set_instance_weight_process(client=slb_client,
slb_id=rov_server_config.slb_id,
instance_id_list=[instance[0] for instance in health_instances],
weight_list=add_weight_list)
logging.info(f"set weight finished instance count: {len(health_instances)}, {health_instances}")
else:
logging.info(f"ess count: {len(instance_id_list)}, "
f"health count: {len(health_instances)}")
sys.exit()
except Exception as e:
logging.error(f"server restart fail!")
logging.error(e)
async def ess_instance(create_client, slb_client, ess_count, max_workers, version):
"""
扩容机器并运行新服务
:param create_client: 购买机器客户端连接
:param slb_client: 修改负载均衡权限
:param ess_count: 扩容数量
:param max_workers: 线程数
:param version: 版本标记
:return:
"""
# 1. 购买机器并启动
ess_instance_ids = utils.create_multiple_instances(
amount=ess_count,
client=create_client,
**rov_server_config.instance_config,
)
time.sleep(60)
# 2. 发送启动脚本到机器上
utils.send_file_to_ecs(client=create_client, instance_id_list=ess_instance_ids, **rov_server_config.start_sh)
logging.info(f"send start shell file finished, instances: {ess_instance_ids}")
# 3. 启动服务
server_start_sh = os.path.join(rov_server_config.start_sh['target_dir'], rov_server_config.start_sh['name'])
server_start_commend = f"sh {server_start_sh} {version}"
utils.run_command(client=create_client, instance_ids=ess_instance_ids, command=server_start_commend)
# 4. 异步探活
global health_instances
health_instances = []
loop = asyncio.get_running_loop()
executor = ThreadPoolExecutor(max_workers=max_workers)
tasks = [
loop.run_in_executor(executor, server_health_check, *args) for args in
[(slb_client, instance_id) for instance_id in ess_instance_ids]
]
await asyncio.wait(tasks)
logging.info(f"health instances count: {len(health_instances)}, {health_instances}")
# 5. 挂载流量
if len(health_instances) == len(ess_instance_ids):
# 所有机器探活成功
time.sleep(60)
utils.add_backend_servers(client=slb_client, slb_id=rov_server_config.slb_id, instances=health_instances)
health_instance_ids = [instance_id for instance_id, _ in health_instances]
add_weight_list = [(10, 30), (20, 20), (40, 10), (60, 10), (80, 10), (100, 10)]
utils.set_instance_weight_process(client=slb_client,
slb_id=rov_server_config.slb_id,
instance_id_list=health_instance_ids,
weight_list=add_weight_list)
global ess_instances
ess_instances.extend(health_instance_ids)
logging.info(f"ess count: {ess_count}, "
f"create count: {len(ess_instance_ids)}, "
f"finished count: {len(health_instance_ids)}")
else:
logging.info(f"ess count: {ess_count}, "
f"create count: {len(ess_instance_ids)}, "
f"health count: {len(health_instances)}")
sys.exit()
def remove_instances(create_client, slb_client, instance_ids):
"""
停止并释放机器
:param create_client:
:param slb_client:
:param instance_ids: instanceId type-list
:return: None
"""
# 1. 摘流量
utils.set_instance_weight_process(client=slb_client,
slb_id=rov_server_config.slb_id,
instance_id_list=instance_ids,
weight_list=[(0, 60)])
logging.info(f"set weight = 0 finished, instances: {instance_ids}")
time.sleep(10)
# 2.移除slb
utils.remove_backend_servers(client=slb_client, slb_id=rov_server_config.slb_id, instances=instance_ids)
# 3. 停止机器
utils.stop_instances(client=create_client, instance_ids=instance_ids)
logging.info(f"instances stop finished, instances: {instance_ids}")
# 4. 判断机器运行状态是否为Stopped
while True:
response = utils.get_instances_status(client=create_client, instance_ids=instance_ids)
if response.get('Code') is None:
instances_list = response.get('InstanceStatuses').get('InstanceStatus')
# logging.info(instances_list)
stopped_instances = [instance.get('InstanceId') for instance in instances_list
if instance.get('Status') == 'Stopped']
if len(stopped_instances) == len(instance_ids):
logging.info(f"instances stopped status set success, instances: {stopped_instances}")
break
else:
logging.info(f"stopped instances count = {len(stopped_instances)}, instances: {stopped_instances}")
time.sleep(10)
else:
logging.error(response)
sys.exit()
# 5. 释放机器
response = utils.release_instances(client=create_client, instance_ids=stopped_instances)
if response.get('Code') is None:
logging.info(f"release instances finished, instances: {stopped_instances}")
else:
logging.error(f"release instances fail!!!")
sys.exit()
def main():
try:
slb_client = utils.connect_client(access_key_id=rov_server_config.slb_client_params['access_key_id'],
access_key_secret=rov_server_config.slb_client_params['access_key_secret'],
region_id=rov_server_config.slb_client_params['region_id'])
create_client = utils.connect_client(access_key_id=rov_server_config.create_client_params['access_key_id'],
access_key_secret=rov_server_config.create_client_params[
'access_key_secret'],
region_id=rov_server_config.create_client_params['region_id'])
# 1. 获取slb下所有机器
online_instance_ids = utils.get_instance_ids(client=slb_client, slb_id=rov_server_config.slb_id)
online_instance_count = len(online_instance_ids)
logging.info(f"online instance count: {online_instance_count}.")
logging.info(f"online instance ids: {online_instance_ids}")
# 2. 扩容机器并启动新服务 扩容数量：线上机器数量
logging.info(f"ess instances start ...")
ess_instance_count = online_instance_count
logging.info(f"ess instance count: {ess_instance_count}")
asyncio.run(ess_instance(create_client=create_client, slb_client=slb_client,
ess_count=ess_instance_count, max_workers=ess_instance_count, version='latest'))
logging.info(f"ess instances end!")
# 3. 重启线上原有服务器
image_name = 'rov-server'
asyncio.run(server_restart_all(slb_client=slb_client, instance_id_list=online_instance_ids,
image_name=image_name, max_workers=online_instance_count))
logging.info(f"server restart finished!")
# 4. 停止并释放扩容机器
logging.info(f"stop & release instances start ...")
remove_instances(create_client=create_client, slb_client=slb_client, instance_ids=ess_instances)
logging.info(f"stop & release instances end!")
except Exception as e:
logging.error(e)
if __name__ == '__main__':
main()