Skip to main content

Installing Rabbit MQ

Install Rabbit MQ

There are many ways to install rabbit-mq as given below.

Using Homebrew

Homebrew has made the life easy to install the Rabbit-MQ in mac. Please refer below link to install the rabbit MQ.
https://www.rabbitmq.com/install-homebrew.html
Once it is installed, below command can be executed to start & stop rabbit MQ.
Start Rabbit MQ:
/usr/local/opt/rabbitmq/sbin/rabbitmq-server
Stop Rabbit MQ:
/usr/local/opt/rabbitmq/sbin/rabbitmqctl stop

Using Docker

With docker it's very easy to install, we just need to pull the image and run it by executing simple command. Assuming you already have dcoker installed in your machine, you can install and run rabbit-mq using below steps.
Pull rabbit-mq image without management console.
docker pull rabbitmq:latest
Pull rabbit-mq image with management console. It is required to enable the UI for management console.
docker pull rabbitmq:3-management
Execute below command to run the image in container named "local_rabbitmq". It will create the container and start rabbit-mq. Latter you can run rabbit-mq by starting the container only (docker start local_rabbitmq).
docker run --hostname rabbitmq.local --name local_rabbitmq -p 15672:15672 rabbitmq:3-management
Execute below command to stop rabbit-mq container.
docker stop local_rabbitmq

Note: There could be other options also to get rabbit-mq like having it in cloud. For development also you can create some free developer account in cloud and get rabbit-mq running there.

Check management console

Enter below URL in browser to access the rabbitmq management console.
http://localhost:15672/
Enter guest/guest as username/password on login screen and you will se below screen upon successful login.
rabbitmq

Verify the Virtual Host

Login to Rabbit-MQ management console (http://localhost:15672/) and go to "Admin" tab, then  click on the "Virtual Hosts" link to see the virtual host details. See the below screenshot.
rabbitmq vhost

If you see the state as "Stopped" in above screen then you need to check the logs at below location. Location may defer as per your installation.
/usr/local/var/log/rabbitmq/rabbit@localhost.log
If you find something in logs complaining about access inside "/usr/local/var/lib/rabbitmq/mnesia/" any of the subdirectory or file, then you need to stop the rabbitmq and then clean that directory using below commands in sequence. After that start the rabbitmq and check the vhost status if it running successfully. See the below steps.
  • Stop rabbit-mq.
  • /usr/local/opt/rabbitmq/sbin/rabbitmqctl stop
  • Go to below location and delete all contents with root user.
  • cd /usr/local/var/lib/rabbitmq/mnesia
    sudo rm -rf *
  • Start rabbit-mq.
  • /usr/local/opt/rabbitmq/sbin/rabbitmq-server
    
Now verify the localhost log in the mentioned log location and check the vhost status in Rabbit-MQ.

Comments

Popular Posts

Setting up kerberos in Mac OS X

Kerberos in MAC OS X Kerberos authentication allows the computers in same domain network to authenticate certain services with prompting the user for credentials. MAC OS X comes with Heimdal Kerberos which is an alternate implementation of the kerberos and uses LDAP as identity management database. Here we are going to learn how to setup a kerberos on MAC OS X which we will configure latter in our application. Installing Kerberos In MAC we can use Homebrew for installing any software package. Homebrew makes it very easy to install the kerberos by just executing a simple command as given below. brew install krb5 Once installation is complete, we need to set the below export commands in user's profile which will make the kerberos utility commands and compiler available to execute from anywhere. Open user's bash profile: vi ~/.bash_profile Add below lines: export PATH=/usr/local/opt/krb5/bin:$PATH export PATH=/usr/local/opt/krb5/sbin:$PATH export LDFLAGS=&

SpringBoot - @ConditionalOnProperty example for conditional bean initialization

@ConditionalOnProperty annotation is used to check if specified property available in the environment or it matches some specific value so it can control the execution of some part of code like bean creation. It may be useful in many cases for example enable/disable service if specific property is available. Below are the attributes which can be used for property check. havingValue - Provide the value which need to check against specified property otherwise it will check that value should not be false. matchIfMissing - If true it will match the condition and execute the annotated code when property itself is not available in environment. name - Name of the property to be tested. If you want to test single property then you can directly put the property name as string like "property.name" and if you have multiple properties to test then you can put the names like {"prop.name1","prop.name2"} prefix - It can be use when you want to apply some prefix to

Multiple data source with Spring boot, batch and cloud task

Here we will see how we can configure different datasource for application and batch. By default, Spring batch stores the job details and execution details in database. If separate data source is not configured for spring batch then it will use the available data source in your application if configured and create batch related tables there. Which may be the unwanted burden on application database and we would like to configure separate database for spring batch. To overcome this situation we will configure the different datasource for spring batch using in-memory database, since we don't want to store batch job details permanently. Other thing is the configuration of  spring cloud task in case of multiple datasource and it must point to the same data source which is pointed by spring batch. In below sections, we will se how to configure application, batch and cloud task related data sources. Application Data Source Define the data source in application properties or yml con

Entity to DTO conversion in Java using Jackson

It's very common to have the DTO class for a given entity in any application. When persisting data, we use entity objects and when we need to provide the data to end user/application we use DTO class. Due to this we may need to have similar properties on DTO class as we have in our Entity class and to share the data we populate DTO objects using entity objects. To do this we may need to call getter on entity and then setter on DTO for the same data which increases number of code line. Also if number of DTOs are high then we need to write lot of code to just get and set the values or vice-versa. To overcome this problem we are going to use Jackson API and will see how to do it with minimal code only. Maven dependency <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.9</version> </dependency> Entity class Below is