RabbitMQ错误:无法连接到节点:nodedown [英] RabbitMQ Error: unable to connect to nodes : nodedown

问题描述

我正在尝试使用两个Rhel实例进行集群.我能够相互ping通，甚至当我尝试使用命令empd -names时，我也能在4369上启动它并运行它.当我使用命令sudo rabbitmqctl join_cluster rabbit@ip-10-23-20-36时，我也得到了以下错误，以确保我首先是stop_app.

I am trying to do clustering using two Rhel instances. I am able to ping each other and even when i am trying to use command empd -names, i get it is up and running on 4369.When i am use the command as sudo rabbitmqctl join_cluster rabbit@ip-10-23-20-36 i am getting the below error ensuring as well to i am stop_app first..

sudo rabbitmqctl join_cluster rabbit@ip-10-23-20-36

使用'rabbit @ ip-10-23-209-142'群集节点'rabbit @ ip-10-23-20-36'... 错误:无法连接到节点['rabbit @ ip-10-23-209-142']:nodedown

Clustering node 'rabbit@ip-10-23-20-36' with 'rabbit@ip-10-23-209-142' ... Error: unable to connect to nodes ['rabbit@ip-10-23-209-142']: nodedown

试图联系:['rabbit @ ip-10-23-209-142']

attempted to contact: ['rabbit@ip-10-23-209-142']

rabbit @ ip-10-23-209-142: *无法连接到ip-10-23-209-142上的epmd(端口4369):nxdomain(不存在的域)

rabbit@ip-10-23-209-142: * unable to connect to epmd (port 4369) on ip-10-23-209-142: nxdomain (non-existing domain)

当前节点详细信息: -节点名称:"rabbitmq-cli-80 @ ip-10-23-20-36" -主目录:/var/lib/rabbitmq -Cookie哈希:u7nRIpJ40Fd356iLbkDO6Q ==

current node details: - node name: 'rabbitmq-cli-80@ip-10-23-20-36' - home dir: /var/lib/rabbitmq - cookie hash: u7nRIpJ40Fd356iLbkDO6Q==

我已经尝试过的东西:

1. 检查cookie名称，使用两个实例在两个实例中都相同 sudo cat /var/lib/rabbitmq/.erlang.cookie.
2. 也更改了epmd端口export ERL_EMPD_PORT=4370
3. netstat -an |grep 4369 | grep -i listen
4. 也在插件管理的GUI中更改主机名.

5. 还使用

1. Checked the cookie name,which is same in both instances using
   sudo cat /var/lib/rabbitmq/.erlang.cookie.
2. Changed the epmd port as well export ERL_EMPD_PORT=4370
3. netstat -an |grep 4369 | grep -i listen
4. Changing the hostnames as well in GUI of plugin management.

5. Changed owner and permission also using

sudo chown rabbitmq:rabbitmq /var/lib/rabbitmq/.erlang.cookie
sudo chmod 400 /var/lib/rabbitmq/.erlang.cookie

添加端口

Add port

sudo iptables -I INPUT -p tcp --dport 4369 --syn -j ACCEPT

sudo rabbitmqctl状态

sudo rabbitmqctl status

{listeners,[{clustering,25672,"::"},{amqp,5672,"::"}]},

* IP地址是示例地址.

*IP-Adresses are sample adrresses.

推荐答案

如错误消息所述，您的主机名无法解析:

As the error message says, your hostnames do not resolve:

rabbit@ip-10-23-209-142: * unable to connect to epmd (port 4369) on ip-10-23-209-142: nxdomain (non-existing domain)

您需要在DNS或两个主机上的/etc/hosts中声明这些主机名.然后，您可以使用来测试名称解析是否正常. ping(1):

You need to declare those hostnames in your DNS or in /etc/hosts on both hosts. You can then test the name resolution is working by using eg. ping(1):

ping ip-10-23-209-142 # from ip-10-23-20-36

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