I'm using Rabbitmq 3.7.17 and I need to rename an existing queue that already contains some messages. Is there a simple way to rename a queue?
You can't rename a queue. If you have to keep the messages, follow these steps.
Create the new queue.
Bind it to the exchange as the old queue was bound.
Unbind the old queue from the exchange.
Consume the messages from the old queue and republish them to the exchange. This will route the messages to the new queue.
Once all messages in the old queue have been consumed, delete it.
To add to what #user11044402 already recommended, once you created the queue under its NEW name, use the RabbitMQ Shovel plugin if it is installed to move all the messages from the queue with the old name to the new queue. Then delete the old queue - the shovel will be automatically removed as well.
Related
When the consumer consumes messages from the queue, then messages get automatically deleted from the queue. But I want to store them in the queue as long as I want. So is there any way in Spring Boot to store the RabbitMQ messages in the queue?
I want to migrate messages on an existing exclusive queue to another queue for preservation, because it's misconfigured and its consumer need to be updated.
How can I migrate those messages?
Using RabbitMQ as broker, I would like to copy all the messages from one queue to another queue for test/debug purpose. What's the simplest way via RabbitMQ web management console / cli?
P.S. Under web console for specified queue, I could only Move messages instead of Copy messages to new queue.
When I need to perform such tasks, I do as follows (assuming you want to copy all of the messages from your reference queue):
create a fanout exchange or use the default one (amq.fanout) if he isn't bound to any queue
bind the reference queue to it
bind the "duplicate" queue to it
configure a shovel to send all the messages in the reference queue to the exchange you bound to both queues, with auto-delete set to "After initial length transferred"
But it does mean that if messages arrived to the reference queue through it's normal flow, they will end up at the top of the queue, with the "copied" messages behind/mixed with them
just create another queue with the same routing key if the exchange is a direct exchange
Go to http://localhost:15672/#/queues
Create vhost (vhost=testhost)
Create two queue using vhost( Test1, Test2)
Create exchange Test_exchange: http://localhost:15672/#/exchanges
Bind these queue(Test1 & Test2) on Test_exchange
Install shovel
sudo rabbitmq-plugins enable rabbitmq_shovel
sudo rabbitmq-plugins enable rabbitmq_shovel_management
Add shovel using admin shovel tab
URI: amqp://{user}:{pass}#{localhost}:5672/vhost (this is for reference queue which u want to create copy, vhost if it has)
source
Destination URI: amqp://user:pass#localhost:5672/Test_exchnage
Queue Name: “Test_exchange”
You can can send msg to your reference queue.
There's a commercial tool, QueueExplorer (disclaimer - I'm the author) which allows you to copy messages, among other things.
How can manual retry work in RabbitMQ after a message has been put onto dead letter queue?
Does RabbitMQ provide an user interface through which you can do this? I assume here that RabbitMQ console does not provide you this capability.
The Rabbit MQ management interface would let you do this crudely, you can go into the deadletter queue, 'get' the message then copy the content. Go to the queue you want to retry the message on and 'publish' it directly to that queue.
Alternatively, you can enable the shovel plugin which allows you to move messages from one queue to another. The RabbitMQ Management plugin directly contains instructions on how to do this.
You can write a consumer / producer using a number of various client libraries. For python a popular library is pika (https://pypi.python.org/pypi/pika).
The script can consume all the messages in a queue, then publish them to another queue.
I'm planning to use rabbitmq federation plugin to replicate messages from master data center to standby, so I can't use cluster mirrored queues.
Is it possible to replicate message deletion to auto sync queue?
In case you need to replicate message from one queue to many consumers use an shovel to map the desired queue to a fanout exchange...then consume directly from the exchange using exclusive queues for each consumer