centos7安装rabbitmq并简单使用

先安装erlang

rpm -Uvh http://www.rabbitmq.com/releases/erlang/erlang-18.1-1.el7.centos.x86_64.rpm

安装rabbitmq-server

rpm -Uvh http://www.rabbitmq.com/releases/rabbitmq-server/v3.5.6/rabbitmq-server-3.5.6-1.noarch.rpm

查看rabbitmq-server有没有安装成功，能查到说明安装成功了

rpm -qa|grep rabbitmq

开启rabbit-server

service rabbitmq-server start

关闭服务

service rabbitmq-server stop

查看rabbit-server当前状态

rabbitmqctl status

安装好后

rabbitmq list_queues显示当前的队列列表

远程连接rabbitmq server的话，需要配置权限
首先在rabbitmq server上创建一个用户
sudo rabbitmqctl add_user yu yuhaha
同时还要配置权限，允许从外面访问（下面的命令相当于创建了一个管理员）
sudo rabbitmqctl set_permissions -p / yu ".*" ".*" ".*"

producer.py

 #!/usr/bin/env python
 # coding:utf8
 # author:Z time:2019/1/11
 import pika

 #建立连接
 #指定用户名
 credentials=pika.PlainCredentials('yu','yuhaha')
 parameters=pika.ConnectionParameters(host='192.168.1.103',credentials=credentials)
 connection = pika.BlockingConnection(parameters)
 channel = connection.channel()#队列连接通道

 # 声明queue
 channel.queue_declare(queue='hello2')

 # n RabbitMQ a message can never be sent directly to the queue, it always needs to go through an exchange.
 channel.basic_publish(exchange='',#消息过滤，为空表示默认
                       routing_key='hello2',#路由，实际消息放到哪个队列由这个参数控制
                       body='Hello World!2')#消息内容
 print(" [x] Sent 'Hello World!'")
 connection.close()

执行两次程序后，再次执行命令rabbitmq list_queues

consumer.py

 #!/usr/bin/env python
 # coding:utf8
 # author:Z time:2019/1/11
 import pika

 credentials=pika.PlainCredentials('yu','yuhaha')
 paramters=pika.ConnectionParameters(host='192.168.1.103',credentials=credentials)
 connection = pika.BlockingConnection(paramters)
 channel = connection.channel()#队列连接通道

 def callback(ch, method, properties, body):#队列连接通道，请求方法，消息参数，消息内容
     print(" [x] Received %r" % body)

 channel.basic_consume(callback,#取到消息后，调用callback函数
                       queue='hello',
                       no_ack=True)

 print(' [*] Waiting for messages. To exit press CTRL+C')
 channel.start_consuming()#开始消费，阻塞模式，没消息一直等，有消息就收，收完了继续等，是处于永远运行的状态

运行consumer.py,成功取到两条消息