RabbitMQ教程（二） ——linux下安裝rabbitmq

安裝過程參考官網：

Installing on RPM-based Linux (RHEL, CentOS, Fedora, openSUSE)

首先須要安裝erlang，參考：http://fedoraproject.org/wiki/EPEL/FAQ#howtouse

rpm -Uvh http://download.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-8.noarch.rpm
yum install erlang

安裝過程當中會有提示，一路輸入「y」便可。

完成後安裝RabbitMQ：

先下載rpm：

wget http://www.rabbitmq.com/releases/rabbitmq-server/v3.6.6/rabbitmq-server-3.6.6-1.el7.noarch.rpm

下載完成後安裝：

yum install rabbitmq-server-3.6.6-1.el7.noarch.rpm 

完成後啓動服務：

service rabbitmq-server start

能夠查看服務狀態：

service rabbitmq-server status

這裏能夠看到log文件的位置，轉到文件位置，打開文件：

這裏顯示的是沒有找到配置文件，咱們能夠本身建立這個文件

cd /etc/rabbitmq/
vi rabbitmq.config

編輯內容以下：

[{rabbit, [{loopback_users, []}]}].

這裏的意思是開放使用，rabbitmq默認建立的用戶guest，密碼也是guest，這個用戶默認只能是本機訪問，localhost或者127.0.0.1，從外部訪問須要添加上面的配置。

保存配置後重啓服務：

service rabbitmq-server stop
service rabbitmq-server start

此時就能夠從外部訪問了，但此時再看log文件，發現內容仍是原來的，仍是顯示沒有找到配置文件，能夠手動刪除這個文件再重啓服務，不過這不影響使用

rm rabbit\@mythsky.log 
service rabbitmq-server stop
service rabbitmq-server start

 

開放5672端口：

firewall-cmd --zone=public --add-port=5672/tcp --permanent
firewall-cmd --reload 

在Windows上進行測試：

新建.net core控制檯項目，引用RabbitMQ.Client包：

Install-Package RabbitMQ.Client

測試代碼：

public static void Main(string[] args)
        {
            ConnectionFactory factory = new ConnectionFactory();
            factory.UserName = "guest";
            factory.Password = "guest";
            factory.VirtualHost = "/";
            factory.HostName = "localhost";
            //factory.HostName = "10.255.19.111";
            try
            {
                IConnection conn = factory.CreateConnection();
                IModel model = conn.CreateModel();
                string exchangeName = "test";
                string queueName = "testq";
                string routingKey = "first";

                model.ExchangeDeclare(exchangeName, ExchangeType.Direct);
                model.QueueDeclare(queueName, false, false, false, null);
                model.QueueBind(queueName, exchangeName, routingKey, null);
                byte[] messageBodyBytes = System.Text.Encoding.UTF8.GetBytes("Hello, world!");
                model.BasicPublish(exchangeName, routingKey, null, messageBodyBytes);
                Console.WriteLine("message sended.");

                bool noAck = false;
                BasicGetResult result = model.BasicGet(queueName, noAck);
                if (result == null)
                {
                    Console.Write("no message.");
                }
                else
                {
                    IBasicProperties props = result.BasicProperties;
                    byte[] body = result.Body;
                    model.BasicAck(result.DeliveryTag, false);
                    string message = System.Text.Encoding.UTF8.GetString(body);
                    Console.Write(message);
                }
            }
            catch (Exception ex)
            {
                Console.Write(ex.Message);
            }
        }

 也能夠使用官網的例子（這裏更清晰）：

http://www.rabbitmq.com/tutorials/tutorial-one-dotnet.html

發送端：

using System;
using RabbitMQ.Client;
using System.Text;

class Send
{
    public static void Main()
    {
        var factory = new ConnectionFactory() { HostName = "localhost" };
        using(var connection = factory.CreateConnection())
        using(var channel = connection.CreateModel())
        {
            channel.QueueDeclare(queue: "hello",
                                 durable: false,
                                 exclusive: false,
                                 autoDelete: false,
                                 arguments: null);

            string message = "Hello World!";
            var body = Encoding.UTF8.GetBytes(message);

            channel.BasicPublish(exchange: "",
                                 routingKey: "hello",
                                 basicProperties: null,
                                 body: body);
            Console.WriteLine(" [x] Sent {0}", message);
        }

        Console.WriteLine(" Press [enter] to exit.");
        Console.ReadLine();
    }
}

接收端：

using RabbitMQ.Client;
using RabbitMQ.Client.Events;
using System;
using System.Text;

class Receive
{
    public static void Main()
    {
        var factory = new ConnectionFactory() { HostName = "localhost" };
        using(var connection = factory.CreateConnection())
        using(var channel = connection.CreateModel())
        {
            channel.QueueDeclare(queue: "hello",
                                 durable: false,
                                 exclusive: false,
                                 autoDelete: false,
                                 arguments: null);

            var consumer = new EventingBasicConsumer(channel);
            consumer.Received += (model, ea) =>
            {
                var body = ea.Body;
                var message = Encoding.UTF8.GetString(body);
                Console.WriteLine(" [x] Received {0}", message);
            };
            channel.BasicConsume(queue: "hello",
                                 noAck: true,
                                 consumer: consumer);

            Console.WriteLine(" Press [enter] to exit.");
            Console.ReadLine();
        }
    }
}

在Windows上發送，在CentOS上接收，效果如圖：

 

開啓管理UI：

rabbitmq-plugins enable rabbitmq_management
firewall-cmd --zone=public --add-port=15672/tcp --permanent
firewall-cmd --reload

在Windows下打開地址：

http://10.255.19.111:15672

用戶名和密碼都是 guest

這樣就能夠方便管理RabbitMQ了。