标签：saltstack automatic grouping
一、要点：
知道key验证存放的目录
key在验证是手动还自动
对不在线的主机的处理
minion_id的命名规范
二、使用的技术栈
saltstack 相关的库：salt.config,salt.client,salt.runner
使用redis 存放两个数据库，第一个为存为字典，用于存放minion_id与物理IP的对应，另一个存为集合，用于项目_业务命名的方式包含相应的主机
使用watchdog对目录变更监控，事件触发机制
三、完整代码
# coding:utf8
# Created by IntelliJ IDEA.
# User: King.gp
# Date: 2016/10/9
# Time: 10:55
# To change this template use File | Settings | File Templates.
import time
import re
import sys
import redis
import logging
import salt.config as saltc
import salt.runner as saltr
import salt.client as SaltC
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
logging.basicConfig(level=logging.DEBUG,
format=‘%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s‘,
datefmt=‘%a, %d %b %Y %H:%M:%S‘,
filename=‘myapp.log‘, )
#################################################################################################
# 定义一个StreamHandler，将INFO级别或更高的日志信息打印到标准错误，并将其添加到当前的日志处理对象#
# console = logging.StreamHandler()
# console.setLevel(logging.INFO)
# formatter = logging.Formatter(‘%(name)-12s: %(levelname)-8s %(message)s‘)
# console.setFormatter(formatter)
# logging.getLogger(‘‘).addHandler(console)
################################################################################################
class MonitorHandler(FileSystemEventHandler):
# time
localtime = time.asctime(time.localtime(time.time()))
# 文件或目录被移动
def on_moved(self, event):
logging.info(MonitorHandler.localtime + " - Event :文件/目录： {0} 被移动!".format(event.src_path))
call_func()
# 文件或目录被创建
def on_created(self, event):
logging.info(MonitorHandler.localtime + " - Event: 文件/目录: {0} 被创建".format(event.src_path))
call_func()
# 文件或目录被删除
def on_deleted(self, event):
logging.info(MonitorHandler.localtime + " - Event :文件/目录： {0} 被删除!".format(event.src_path))
call_func()
# 文件或目录被修改
def on_modified(self, event):
logging.info(MonitorHandler.localtime + " - Event :文件/目录： {0} 被修改!".format(event.src_path))
call_func()
def client():
slc = SaltC.LocalClient()
return slc
class NodeGroup(object):
def __init__(self):
self.member = redis.StrictRedis(host=‘127.0.0.1‘,
port=6379,
db=6, ) # 字典数据
self.project = redis.StrictRedis(host=‘127.0.0.1‘,
port=6379,
db=7, ) # 集合数据
def update_info(self):
self.member.flushdb()
self.project.flushdb()
with open(‘host‘, ‘rb‘) as fd:
lines = fd.readlines()
pattern = re.compile(r‘[a-z]+‘)
for line in lines:
line = line.strip().split() # 1.2.3.4 web01.crms.com
self.member.set(line[1], line[0]) # web01.crms.com
profession_number = line[1].split(".")[0] # web01
m = re.match(pattern, profession_number)
if m:
profession = m.group()
project_suffix = line[1].split(‘.‘)[-2:]
project = ‘.‘.join(project_suffix) # crms.com
self.project.sadd(‘_‘.join([project, profession]), ‘‘) # crms.com_web: ‘‘
member_list = []
match_dict = {}
for category in self.project.keys():
category_pattern = re.compile(category.split("_")[1]) # vm, logstash, elasticsearch
pattern_member_list = []
for key in self.member.keys():
# [‘test.logstash.yinker.com‘, ‘test.elastic.yinker.com‘, ‘test.vm.yinker.com‘]
category_match = category_pattern.search(key) # web we01.crms.com
if category_match:
pattern_member_list.append(key)
match_dict[category_pattern.pattern] = pattern_member_list
if match_dict not in member_list:
member_list.append(match_dict)
# members_dict = {}
for p in self.project.keys():
pattern = re.compile(p.split("_")[0])
for k, values in member_list[0].items():
members_list = []
for v in values:
match = pattern.search(v) # suffix ,
if match:
members_list.append(match.string)
else:
continue
# members_dict[‘_‘.join([pattern.pattern, k])] = members_list
# print members_list
self.project.sadd(‘_‘.join([pattern.pattern, k]), members_list)
self.project.srem(‘_‘.join([pattern.pattern, k]), ‘‘)
def append_config(self):
with open("/etc/salt/master.d/nodegroups.conf", "w") as fd:
fd.write("nodegroups:\n")
with open("/etc/salt/master.d/nodegroups.conf", "a+")as f:
for mem in self.project.keys():
# zookeeperg0: ‘L@sh-zookeeperg0-10.168.1.32
# ["[‘idp01.crms.com‘,‘idp02.crms.com‘]"]
f.write(" " + mem + ": " + "‘" + "L@" + (‘‘.join(
[i.replace("[‘", ‘‘).replace("‘]", ‘‘).replace("‘", ‘‘) for i in
self.project.smembers(mem)]) + "‘" + ‘\n‘).replace(‘ ‘, ‘‘))
def control_hosts():
priv_opts = saltc.master_config(‘/etc/salt/master‘)
priv_runner = saltr.RunnerClient(priv_opts)
# r = priv_runner()
host_down = priv_runner.cmd("manage.down", ["removekeys=True"]) # 移除DOWN状态的minion
if len(host_down) > 0:
logging.info(MonitorHandler.localtime + "minion_id: {0} 己经下线 ".format(‘ ‘.join(host_down)))
local = client()
host_items = local.cmd("*", "grains.item", [‘ip4_interfaces‘, ‘id‘])
time.sleep(3)
if host_items:
raw = ‘‘
for v in host_items.values():
raw = ‘{0}{1}\n‘.format(raw, ‘ ‘.join([v[‘ip4_interfaces‘][‘eth0‘][0], v[‘id‘]]))
with open("host", "w+") as f:
f.write(raw)
return True
else:
logging.error(MonitorHandler.localtime + "拉取grains信息失败")
return False
def call_func():
status = control_hosts()
if status:
group_agg = NodeGroup()
group_agg.update_info()
group_agg.append_config()
else:
logging.error(MonitorHandler.localtime + "拉取grains信息失败")
sys.exit(status=127)
if __name__ == "__main__":
Monitor_Dir = ‘/etc/salt/pki/master/minions‘
event_handler = MonitorHandler()
observer = Observer()
NodeGroup_File = ‘/etc/salt/master.d/nodegroups.conf‘
observer.schedule(event_handler, path=Monitor_Dir, recursive=True)
observer.start()
try:
while True:
time.sleep(10)
except KeyboardInterrupt:
observer.stop()
observer.join()四、关于缺陷
关于怎么判断minion不在线的界定，是因为网络抖动，还是真的下线;
如果出来这样的问题是移除，还是不处理，如何取舍，因为这涉及一个问题，利用分组无法准确的执行任务，因为分组依赖于salt的允许的key对应的主机;
启动时会提示递归溢出，所有移除的主机都会输出到console上;
请自行添加到supervisor中。
本文出自 “和风细雨” 博客，请务必保留此出处http://essun.blog.51cto.com/721033/1959970
标签：saltstack automatic grouping
原文地址：http://essun.blog.51cto.com/721033/1959970
