What is HA mode in RabbitMQ?
CloudAMQP gives you the option to set up 2 or 3 node clusters. We have located each node in different availability zones (AWS), and queues are automatically mirrored, replicated ( HA ) between availability zones. When a node fails, we have a mechanism to auto-failover to other nodes in the cluster.
How do I set up RabbitMQ ha?
- Step 1 – Setup Hosts File.
- Step 2 – Install RabbitMQ Server.
- Step 3 – Enable RabbitMQ Management Plugins.
- Step 4 – Configure CentOS Firewalld.
- Step 5 – Set up RabbitMQ Cluster.
- Step 6 – Create a New Administrator User.
- Step 7 – RabbitMQ Setup Queue Mirroring.
- Step 8 – Testing.
Is RabbitMQ High Availability?
RabbitMQ provides excellent support for high availability within a single data center or across multiple availability zones via the use of clustering and replicated queues.
How do I access RabbitMQ management?
Open the RabbitMQ management console, http://localhost:15672 . Login as a guest. Enter guest as the Username and Password. Note: The default user “guest” is an administrative user and its login credentials are published on the official RabbitMQ web site.
What is the default port for RabbitMQ?
By default, RabbitMQ will listen on port 5672 on all available interfaces. It is possible to limit client connections to a subset of the interfaces or even just one, for example, IPv6-only interfaces.
How do I check my RabbitMQ status?
Check the service status
- Open a command-line console (run as Administrator) and change to the RabbitMQ batch scripts folder;
- Execute the following command: rabbitmqctl.bat status.
How do I start RabbitMQ management console?
How to Enable RabbitMQ Management Plugin and Create New User
- Enable RabbitMQ Management Plugin.
- Restart the RabbitMQ Server.
- Login to RabbitMQ Management Dashboard.
- Change the guest password.
- Create a new RabbitMQ User Account.
- Set Permissions to RabbitMQ User Acccount.
What is Kafka and RabbitMQ?
RabbitMQ is a solid, mature, general purpose message broker. Apache Kafka is a message bus optimized for high-ingress data streams and replay. Primary use. Message queue for communication and integration within, and between applications. For long-running tasks, or when you need to run reliable background jobs.
How do I know if Amqp port is open?
Open ports, TCP and UDP connections of a node can be inspected using netstat, ss, lsof. If the above commands produce no output then no local OS processes listen on the given port. For the list of ports used by RabbitMQ and its various plugins, see above.
How do I get RabbitMQ URL?
A link to the RabbitMQ management interface can be found on the details page for your hosted RabbitMQ solution, your CloudAMQP instance. If you have RabbitMQ installed on localhost, go to http://localhost:15672/ to find the management page. All the tabs from the menu are explained in this post.
What does ha promote on failure do in RabbitMQ?
Starting with RabbitMQ 3.7.5, the ha-promote-on-failure policy key controls whether unsynchronised mirror promotion is allowed. When set to when-synced , it will make sure that unsynchronised mirrors are not promoted.
What can a RabbitMQ management plugin be used for?
Any cluster node with rabbitmq-management plugin enabled can be used for management UI access or data collection by monitoring tools. It will reach out to other nodes and collect their stats, then aggregate and return a response to the client. When monitoring a cluster of nodes, there is no need to contact each node via HTTP API individually.
Why do you need quorum queues in RabbitMQ?
The reasons you should switch to Quorum Queues and design flaws of classic mirrored queues are described in the article. In RabbitMQ 3.6 and larger, a feature called lazy queues was added. Lazy queues are queues where the messages are automatically stored to disk. Messages are only loaded into memory when they are needed.
When to use apply to or priority in RabbitMQ?
The “apply-to” argument can be “exchanges” , “queues” or “all”. The “apply-to” and “priority” settings are optional, in which case the defaults are “all” and “0” respectively. In some cases we might want to apply more than one policy definition to a resource. For example we might need a queue to be federated and mirrored.