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88 lines
3.3 KiB
88 lines
3.3 KiB
#!/usr/bin/env python |
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# -*- coding:utf-8 -*- |
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# Author:qiaozhanwei |
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''' |
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yum 安装pip |
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yum -y install python-pip |
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pip install kazoo 安装 |
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conda install -c conda-forge kazoo 安装 |
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运行脚本： |
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nohup python -u monitor_server.py > nohup.out 2>&1 & |
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''' |
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import socket |
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import os |
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import sched |
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import time |
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from datetime import datetime |
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from kazoo.client import KazooClient |
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schedule = sched.scheduler(time.time, time.sleep) |
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class ZkClient: |
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def __init__(self): |
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# hosts配置zk地址集群 |
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self.zk = KazooClient(hosts='ark0:2181,ark1:2181,ark2:2181') |
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self.zk.start() |
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# 读取配置文件，组装成字典 |
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def read_file(self,path): |
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with open(path, 'r') as f: |
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dict = {} |
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for line in f.readlines(): |
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arr = line.strip().split('=') |
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if (len(arr) == 2): |
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dict[arr[0]] = arr[1] |
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return dict |
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# 根据hostname获取ip地址 |
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def get_ip_by_hostname(self,hostname): |
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return socket.gethostbyname(hostname) |
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# 重启服务 |
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def restart_server(self,inc): |
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config_dict = self.read_file('/data1_1T/escheduler/conf/config/run_config.conf') |
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master_list = config_dict.get('masters').split(',') |
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master_list = list(map(lambda item : self.get_ip_by_hostname(item),master_list)) |
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worker_list = config_dict.get('workers').split(',') |
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worker_list = list(map(lambda item: self.get_ip_by_hostname(item), worker_list)) |
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if (self.zk.exists('/escheduler/masters')): |
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zk_master_list = [] |
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zk_master_nodes = self.zk.get_children('/escheduler/masters') |
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for zk_master_node in zk_master_nodes: |
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zk_master_list.append(zk_master_node.split('_')[0]) |
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restart_master_list = list(set(master_list) - set(zk_master_list)) |
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if (len(restart_master_list) != 0): |
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for master in restart_master_list: |
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print("master " + self.get_ip_by_hostname(master) + " 服务已经掉了") |
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os.system('ssh ' + self.get_ip_by_hostname(master) + ' sh /data1_1T/escheduler/bin/escheduler-daemon.sh start master-server') |
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if (self.zk.exists('/escheduler/workers')): |
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zk_worker_list = [] |
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zk_worker_nodes = self.zk.get_children('/escheduler/workers') |
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for zk_worker_node in zk_worker_nodes: |
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zk_worker_list.append(zk_worker_node.split('_')[0]) |
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restart_worker_list = list(set(worker_list) - set(zk_worker_list)) |
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if (len(restart_worker_list) != 0): |
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for worker in restart_worker_list: |
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print("worker " + self.get_ip_by_hostname(worker) + " 服务已经掉了") |
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os.system('ssh ' + self.get_ip_by_hostname(worker) + ' sh /data1_1T/escheduler/bin/escheduler-daemon.sh start worker-server') |
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print(datetime.now().strftime("%Y-%m-%d %H:%M:%S")) |
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schedule.enter(inc, 0, self.restart_server, (inc,)) |
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# 默认参数60s |
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def main(self,inc=60): |
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# enter四个参数分别为：间隔事件、优先级（用于同时间到达的两个事件同时执行时定序）、被调用触发的函数， |
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# 给该触发函数的参数（tuple形式） |
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schedule.enter(0, 0, self.restart_server, (inc,)) |
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schedule.run() |
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if __name__ == '__main__': |
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zkClient = ZkClient() |
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zkClient.main(300) |