RabbitMQ --- 常见问题

1、rabbitmq 启动错误 .erlang.cookie must be accessible by owner only

解决方法：

chmod 600 /var/lib/rabbitmq/.erlang.cookie

 

RabbitMQ 强制删除队列

有些情况下导致队列无法删除，可使用如下命令强制删除：

rabbitmqctl eval 'rabbit_amqqueue:internal_delete({resource,<<"/">>,queue,<<"cinder.info">>}).'

 

 

 

脑裂问题

现象是在 RabbitMQ GUI上显示

Network partition detected

Mnesia reports that this RabbitMQ cluster has experienced a network partition. There is a risk of losing data. Please read RabbitMQ documentation about network partitions and the possible solutions.

 

原因分析：

这是由于网络问题导致集群出现了脑裂

解决办法：

在相对不怎么信任的分区里，对那个分区的节点实行，在出现问题的节点上执行:

rabbitmqctl stop_app

rabbitmqctl reset

rabbitmqctl start_app

 

加入集群失败问题

[root@rabbitmq-102 rabbitmq]# rabbitmqctl join_cluster rabbit@rabbitmq-101 --ram

Clustering node 'rabbit@rabbitmq-102' with 'rabbit@rabbitmq-101'

Error: {inconsistent_cluster,"Node 'rabbit@rabbitmq-101' thinks it's clustered with node 'rabbit@rabbitmq-102', but 'rabbit@rabbitmq-102' disagrees"}

 

现在在节点 rabbitmq-101 运行的节点执行：

rabbitmqctl forget_cluster_node rabbitmq-102

# 然后在 rabbitmq-102 执行

rabbitmqctl join_cluster rabbit@rabbitmq-101 --ram

 

In some cases the last node to go offline cannot be brought back up. It can be removed from the cluster using the forget_cluster_node rabbitmqctl command.

 

 

Virtual host / experienced an error on node rabbit@ and may be inaccessible

查看RabbitMQ的日志，里面有很多类似如下错误：

/var/lib/rabbitmq/mnesia/rabbit@<hostname>/msg_stores/vhosts/9Q355W65BH1CKHLV81SV8HAB4/recovery.dets

 

修复方式：

停止RabbitMQ集群

删除错误的vhosts/9Q355W65BH1CKHLV81SV8HAB4文件

启动RabbitMQ集群