import sys import time import requests import utils import logging import os import docker import longvideoapi_config health_instances = [] ess_instances = [] remove_container_instances = [] def server_health_check(ecs_client, instance_id): """ 服务健康检查 :param ecs_client: 客户端连接 :param instance_id: instanceId :return: """ global health_instances ip_address = utils.get_ip_address(ecs_client=ecs_client, instance_id=instance_id) while True: health_check_url = f"http://{ip_address}:8080/longvideoapi/test" try: http_code = requests.get(health_check_url).status_code except: logging.info(f"images is downloading ip：{ip_address}") http_code = 0 if http_code == 200: health_instances.append((instance_id, ip_address)) logging.info(f"health check success, instance: {instance_id}/{ip_address}") break else: time.sleep(10) def remove_container_image(ecs_client, instance_id, container_name_list): """ 移除旧容器并删除旧镜像 :param ecs_client: 客户端连接 :param instance_id: instanceId type-string :param container_name_list: 容器名称 type-list :return: """ ip_address = utils.get_ip_address(ecs_client=ecs_client, instance_id=instance_id) logging.info(f"服务器信息：{instance_id}/{ip_address}") client = docker.DockerClient(base_url=f'tcp://{ip_address}:2375', timeout=60) # 移除旧的容器 container_remove_retry = 3 i = 0 while True: if i >= container_remove_retry: logging.error(f"容器不存在或者无法删除当前容器, instance = {instance_id}/{ip_address}") sys.exit() try: flag = False for container_name in container_name_list: try: container_id = client.containers.get(container_name) container_id.remove(force=True) flag = True break except: continue if flag: break except Exception as e: i += 1 # 删除旧镜像 images_remove_retry = 3 j = 0 while True: if j >= images_remove_retry: logging.error(f"镜像不存在，无法获取到镜像ID, instance = {instance_id}/{ip_address}") sys.exit() try: images = client.images.list() for image in images: client.images.remove(force=True, image=image.tags[0]) time.sleep(2) global remove_container_instances remove_container_instances.append(instance_id) break except Exception as e: j += 1 def update_instance(ecs_client, alb_client, instance_id, version, port): """ 线上机器更新 :param ecs_client: :param alb_client: alb客户端连接 :param instance_id: instanceId :param version: 版本标记 :param port: 后端服务器使用的端口 :return: """ logging.info(f"update instance: {instance_id}") # 1. 摘流量，将权重降为0 utils.update_server_group_servers_attribute(alb_client=alb_client, server_group_id_list=longvideoapi_config.server_group_id_list, instance_id_list=[instance_id], weight_list=[(0, 20)], port=port) logging.info(f"Set weight to 0 for instance: {instance_id}") # 2. 移除旧容器并删除旧镜像 global remove_container_instances remove_container_instances = [] container_name_list = ['vlogapi', 'longvideoapi'] remove_container_image(ecs_client, instance_id, container_name_list) logging.info(f"remove container & images finished, instance: {remove_container_instances}," f" count: {len(remove_container_instances)}") if len(remove_container_instances) == 0: logging.error(f"remove container image failed|") sys.exit() # 3. 发送启动脚本到机器上 utils.send_file_to_ecs(ecs_client=ecs_client, instance_id_list=[instance_id], **longvideoapi_config.start_sh) logging.info(f"send start shell file finished, instance: {instance_id}") # 4. 启动服务 server_start_sh = os.path.join(longvideoapi_config.start_sh['target_dir'], longvideoapi_config.start_sh['name']) server_start_command = f"sh {server_start_sh} {version}" utils.run_command(ecs_client=ecs_client, instance_ids=[instance_id], command=server_start_command) # 5. 探活 global health_instances health_instances = [] server_health_check(ecs_client, instance_id) logging.info(f"health instances: {health_instances}, count: {len(health_instances)}") # 6. 挂载流量 if len(health_instances) == 0: logging.info(f"health instances: {health_instances}, count: {len(health_instances)}") sys.exit() # 机器探活成功 time.sleep(20) health_instance_ids = [instance_id for instance_id, _ in health_instances] add_weight_list = [(10, 5), (20, 5), (40, 5), (60, 5), (80, 5), (100, 5)] # add_weight_list = [(10, 10), (20, 10), (40, 10), (60, 10), (80, 10), (100, 10)] utils.update_server_group_servers_attribute(alb_client=alb_client, server_group_id_list=longvideoapi_config.server_group_id_list, instance_id_list=health_instance_ids, weight_list=add_weight_list, port=port) logging.info(f"finished instances: {health_instances}, count: {len(health_instances)}") def main(): try: version = sys.argv[1] alb_client = utils.connect_alb_client( access_key_id=longvideoapi_config.alb_client_params['access_key_id'], access_key_secret=longvideoapi_config.alb_client_params['access_key_secret'], endpoint=longvideoapi_config.alb_client_params['endpoint'] ) ecs_client = utils.connect_client(access_key_id=longvideoapi_config.ecs_client_params['access_key_id'], access_key_secret=longvideoapi_config.ecs_client_params[ 'access_key_secret'], region_id=longvideoapi_config.ecs_client_params['region_id']) # 1. 获取ALB下所有机器 online_instance_ids = utils.list_server_group_servers(alb_client=alb_client, server_group_id=longvideoapi_config.server_group_id_list[0]) 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. 对其中一台机器进行更新 instance_id = online_instance_ids[0] logging.info(f"update instance start ...") update_instance(ecs_client=ecs_client, alb_client=alb_client, instance_id=instance_id, version=version, port=longvideoapi_config.port) logging.info(f"update instances end!") except Exception as e: logging.error(e) sys.exit() if __name__ == '__main__': main()