1.Ansible Inventory 介绍;
Ansible Inventory 是包含静态 Inventory 和动态 Inventory 两部分的，静态 Inventory 指的是在文件中指定的主机和组，动态 Inventory 指通过外部脚本获取主机列表，并按照 ansible 所要求的格式返回给 ansilbe 命令的。这部分一般会结合 CMDB 资管系统、云计算平台等获取主机信息。由于主机资源一般会动态的进行增减，而这些系统一般会智能更新。我们可以通过这些工具提供的 API 或者接入库查询等方式返回主机列表。
2.flask_sqlalchemy 配置;
(1).mysqlconfig.py (mysql 连接器)
class MysqlConfig(object):
DIALECT = mysql
DRIVER = pymysql
USERNAME = "root"
PASSWORD = "test"
HOST = "192.168.1.1"
PORT = "3306"
DATABASE = getApolloconf("DATABASE")
SQLALCHEMY_DATABASE_URI = "{}+{}://{}:{}@{}:{}/{}?charset=utf8".format(DIALECT, DRIVER, USERNAME, PASSWORD, HOST, PORT, DATABASE)
SQLALCHEMY_TRACK_MODIFICATIONS = False
(2.1).models.py (数据库字段设计)
# -*- coding: utf-8 -*-
import datetime
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy()
class ansible_hosts(db.Model):
__tablename__ = 'ansible_hosts'
id = db.Column(db.Integer, primary_key=True, autoincrement=True) # 主键自增长
host = db.Column(db.String(16), nullable=False) ###不能为空
username = db.Column(db.String(32), nullable=False) ###不能为空
password = db.Column(db.String(64), nullable=False) ###不能为空
port = db.Column(db.String(8), nullable=False)
create_time = db.Column(db.DateTime(timezone=False), default=datetime.datetime.now())
def to_dict(self):
return {"id": self.id, "host": self.host, "username": self.username, "password": self.passsword,
"port": self.port}
(2.2).数据库表初始化文件
from models import db
from __init__ import create_app
app = create_app()
with app.app_context():
db.create_all()
(2.3)初始化表;
python36 table.py
(2.4).查看数据库表结构;
MySQL [ansible]> desc ansible_hosts;
+-------------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+-------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| host | varchar(16) | NO | | NULL | |
| username | varchar(32) | NO | | NULL | |
| password | varchar(64) | NO | | NULL | |
| port | varchar(8) | NO | | NULL | |
| create_time | datetime | YES | | NULL | |
+-------------+-------------+------+-----+---------+----------------+
(2.5).动态主机脚本;
#!/usr/bin/python
#-*- coding: UTF-8 -*-
from __future__ import print_function
import argparse
import json
from collections import defaultdict
from contextlib import contextmanager
from models import db
from models import ansible_hosts
def to_json(in_dict):
return json.dumps(in_dict, sort_keys=True, indent=2)
def parse_args():
parser = argparse.ArgumentParser(description='OpenStack Inventory Module')
group = parser.add_mutually_exclusive_group(required=True)
group.add_argument('--list', action='store_true', help='List active servers')
group.add_argument('--host', help='List details about the specific host')
return parser.parse_args()
def ansiblehostsSelect():
import json
from models import ansible_hosts
queryhostData = ansible_hosts.query.filter_by(username='host').first()
querygroupData = ansible_hosts.query.filter_by(username='group').first()
return Response(json.dumps({"code": 0, "total": len(queryData), "host": [i.to_dict() for i in queryhostData ],
"group":[i.to_dict() for i in querygroupData]}),
mimetype='application/json')
def main():
parser = parse_args()
if parser.list:
hosts = list_all_hosts(conn)
print(to_json(hosts))
else:
details = get_host_detail(conn, parser.host)
print(to_json(details))
if __name__ == '__main__':
main()
(3).flask init 初始化 from flask import Flask from tools.config import MysqlConfig def create_app(): app = Flask(__name__) app.config.from_object(MysqlConfig) from models import db db.init_app(app) app.register_blueprint(opsapp,url_prefix='/opsapp') return app
(4).flask 启动配置; from __init__ import create_app app = create_app() if __name__ == '__main__': app.run( host="127.0.0.1", port=5000, debug=True, )