rabbitmq troubleshooting

The RABBITMQ built-in cluster is designed to accomplish two goals: allowing consumers and producers to continue to run while the RABBITMQ node is crashing, and to linearly scale the throughput of message traffic by adding more nodes. When a RABBITMQ node is lost, the client can connect to any other node in the cluster and continue to produce or consume messages.

RABBITMQ There are two ways to save a message in a queue: disc and RAM. If you use disc, you need to set Exchange/queue/delivery mode to durable. The advantage of the disc method is that when RABBITMQ fails, the message can still be resumed after a reboot. With RAM, RABBITMQ is much more efficient at handling message,and the efficiency ratio of RAM and disc in tw

1. Installing ErlangSo before installing RABBITMQ, you need to install Erlang first.Small series use is otp_win64_18.1, need other version or 32-bit system, can go to the official website to download.Click "Next" to do it all.Some choose other installation method, may need to add the system environment variable (also check under the normal installation):There is no better, no words to add it manually.2. Installing RABBITMQDownload run

At present the company, just into the company took over a service, is a relatively complete service, of which several computers between the communication used to RABBITMQ, at first did not have any problems, and then later ransomware virus Wanner Cry came, the department of all servers installed a what antivirus software, After restarting the RABIBTMQ cluster there are some problems, after some learning, these problems are taken care of, now do a summ

Before writing an article about active and Message Queuing push-pull mode, you can refer to: LinkFor more information on Active vs. RABBITMQ and other comparisons, there are the following records:This article link refers to:Basic introductionRabbitMQ: based on the AMQP protocol ( Advanced Message Queue Protocol)ActiveMQ: based on Stomp Protocol (Note: I only know that it is based on JMS)The RabbitMQ is an M

In the initial state, when the producer sends the message(1) The producer connects to Rabbitmq Broker, establishes a connection (Connection), and opens a channel(2) The producer declares a switch and sets related properties such as switch type, whether persistent, etc.(3) Producers declare a queue well set related attributes, such as whether exclusive, persistent, automatic deletion, etc.(4) The producer binds the exchanger and the queue through a rou

The default OpenStack uses RABBITMQ for information queuing, and if you want to be cloud high, you need to have a highly available configuration for each of the components involved, and this article focuses on how to use RABBITMQ for high availability.The highly available methods are:Through the distributed nature of Erlang (through the Magic Cookie Authentication node) for the

In the previous article, we demonstrated a sender and a consumer. This article describes how multiple consumers obtain messages in the same message queue. In some applications, it takes a long time for the consumer to process the received message task. If the next data is obtained after the previous message is processed, there will inevitably be some latency. Data in the message queue will also increase, and the latency will increase. Of course, for a consumption process, in some cases, multipl

Install RabbitMQ on CentOS7 1. Download the rpm of erlang and rabbitmq-server: Http://www.rabbitmq.com/releases/erlang/erlang-19.0.4-1.el7.centos.x86_64.rpm Http://www.rabbitmq.com/releases/rabbitmq-server/v3.6.6/rabbitmq-server-3.6.6-1.el7.noarch.rpm NOTE: If downloading is slow, you can try to use Baidu cloud disk fo

Label: style blog HTTP color Io OS ar Java In the previous article, we created the work queue. Behind the work queue, rabbitmq only sends each task message to one consumer. This article describes how to push a message to multiple consumers. This mode is called publish/subscribe (publish/subscribe ). To illustrate this mode, we will build a simple log system. This will contain two programs, the first is to send log information, and the second will rece

Test Environment 1: win7 Test environment 2: ubuntu10.04 Install the Erlang Environment 1. Download: http://erlang.org/download.html Download the source code package or win Binary Package as needed. 2. installation: In Windows, there is nothing to say about it. All the way to next ~ In the Linux environment, I have installed Erlang on ubuntu10.04 and the version is rb13b03, but it does not seem to support the latest version of rabbitmq. If you want t

RABBITMQ Introduction RABBITMQ is a typical representative of the consumption-producer model, one end writes messages to the message queue, and the other end can read or subscribe to messages in the queue. It is a reusable enterprise message system that implements the AMQP protocol. RABBITMQ is developed in Erlang. The RABBIT