Deploy your Bitnami RabbitMQ Stack on CenturyLink Cloud now! Launch Now

Description

RabbitMQ is a messaging broker that gives your applications a common platform to send and receive messages, and your messages a safe place to live until received.

First steps with the Bitnami RabbitMQ Stack

Welcome to your new Bitnami application running on CenturyLink Cloud! Here are a few questions (and answers!) you might need when first starting with your application.

What credentials do I need?

You need two sets of credentials:

  • The application credentials that allow you to log in to your new Bitnami application. These credentials consist of a username and password.
  • The server credentials that allow you to log in to your CenturyLink Cloud server using an SSH client and execute commands on the server using the command line. These credentials consist of an SSH username and key.

What is the administrator username set for me to log in to the application for the first time?

Username: user

What SSH username should I use for secure shell access to my application?

SSH username: bitnami

How to start or stop the services?

Each Bitnami stack includes a control script that lets you easily stop, start and restart services. The script is located at /opt/bitnami/ctlscript.sh. Call it without any service name arguments to start all services:

$ sudo /opt/bitnami/ctlscript.sh start

Or use it to restart a single service, such as Apache only, by passing the service name as argument:

$ sudo /opt/bitnami/ctlscript.sh restart apache

Use this script to stop all services:

$ sudo /opt/bitnami/ctlscript.sh stop

Restart the services by running the script without any arguments:

$ sudo /opt/bitnami/ctlscript.sh restart

Obtain a list of available services and operations by running the script without any arguments:

$ sudo /opt/bitnami/ctlscript.sh

What is the default configuration of RabbitMQ?

  • Default access ports: 15672 port and the 5672 port.
    • Port 15672 is for the management panel and is open for connections from a different machine.
    • Port 5672 is for applications and can only be accessed from the internal network.
  • Default hostname and home: the default hostname of RabbitMQ is set to rabbitmq@SERVER-IP and the default home is /opt/bitnami/rabbitmq/rabbitmq_home. Change this in the /opt/bitnami/rabbitmq/etc/rabbitmq/rabbitmq-env.conf file.

What are the default ports?

A port is an endpoint of communication in an operating system that identifies a specific process or a type of service. Bitnami stacks include several services or servers that require a port.

Remember that if you need to open some ports you can follow the instructions given in the FAQ to learn how to open the server ports for remote access.

Port 22 is the default port for SSH connections.

The RabbitMQ access port is 5672. This port is closed by default, you must open it to enable remote access.

How to upload files to the server with SFTP?

NOTE: Bitnami applications can be found in /opt/bitnami/apps.
NOTE: The steps below assume that your CenturyLink Cloud server has a public IP address and an open SSH port. For more information, refer to the instructions on how to configure a public IP address and open the SSH port.

The first step is to ensure that you have the SSH credentials for your server.

If you are using the Bitnami Launchpad for CenturyLink Cloud, follow these steps:

  • Browse to the Bitnami Launchpad for CenturyLink Cloud and sign in if required using your Bitnami account credentials.

  • Select the "Virtual Machines" menu item.

  • Select your cloud server from the resulting list.

  • Note the server IP address and SSH password on the resulting page. By default, the SSH username is root.

    SSH credentials

If you are using the CenturyLink Control Portal, follow these steps:

  • Browse to the CenturyLink Control Portal and sign in if required using your CenturyLink Cloud account credentials.

  • Enter the name of your server in the search box at the top of the page, or select the server from the region and group list.

  • On the server detail page, obtain the public IP address. It is important to use the public IP address and not the internal IP address.

    CenturyLink IP address

  • On the same page, click the "show admin credentials" button. Note the username and password displayed.

    SSH credentials

Although you can use any SFTP/SCP client to transfer files to your server, this guide documents FileZilla (Windows, Linux and Mac OS X), WinSCP (Windows) and Cyberduck (Mac OS X).

Using a Password

Once you have your server's SSH credentials, choose your preferred application and follow the steps below to connect to the server using SFTP.

FileZilla

Follow these steps:

  • Download and install FileZilla.
  • Launch FileZilla and use the "File -> Site Manager -> New Site" command to bring up the FileZilla Site Manager, where you can set up a connection to your server.
  • Enter your server host name.
  • Select "SFTP" as the protocol and "Ask for password" as the logon type. Specify root as the user name and enter the server password.

    FileZilla configuration

  • Use the "Connect" button to connect to the server and begin an SFTP session. You might need to accept the server key, by clicking "Yes" or "OK" to proceed.

You should now be logged into the /root directory on the server. You can now transfer files by dragging and dropping them from the local server window to the remote server window.

If you have problems accessing your server, get extra information by use the "Edit -> Settings -> Debug" menu to activate FileZilla's debug log.

FileZilla debug log

WinSCP

Follow these steps:

  • Download and install WinSCP.
  • Launch WinSCP and in the "Session" panel, select "SCP" as the file protocol.
  • Enter your server host name and specify root as the user name. Enter the corresponding password as well.

    WinSCP configuration

  • From the "Session" panel, use the "Login" button to connect to the server and begin an SCP session.

You should now be logged into the /root directory on the server. You can now transfer files by dragging and dropping them from the local server window to the remote server window.

Cyberduck

Follow these steps:

  • Select the "Open Connection" command and specify "SFTP" as the connection protocol.

    Cyberduck configuration

  • In the connection details panel, enter the server IP address, the username root and the SSH password.

    Cyberduck configuration

  • Use the "Connect" button to connect to the server and begin an SFTP session.

You should now be logged into the /root directory on the server. You can now transfer files by dragging and dropping them from the local server window to the remote server window.

How to connect to the RabbitMQ management panel?

In order to connect to the RabbitMQ management panel, you have two options:

  • (Recommended): Access the RabbitMQ management panel through an SSH tunnel (refer to the FAQ for more information about SSH tunnels).
  • Open the port 15672 for remote access (refer to the FAQ for more information about opening ports).

IMPORTANT: Making this application's network ports public is a significant security risk. You are strongly advised to only allow access to those ports from trusted networks. If, for development purposes, you need to access from outside of a trusted network, please do not allow access to those ports via a public IP address. Instead, use a secure channel such as a VPN or an SSH tunnel. Follow these instructions to remotely connect safely and reliably.

Once you have an active SSH tunnel or you opened the port for remote access, you can then connect to RabbitMQ management panel by browsing to:

  • Access through an SSH tunnel: http://127.0.0.1:SOURCE-PORT/
  • Access opening ports: http://SERVER-IP:15672/

How to connect to RabbitMQ from a different machine?

For security reasons, the RabbitMQ ports in this solution cannot be accessed over a public IP address. To connect to RabbitMQ from a different machine, you must open ports 5672 and 5672 for remote access. Refer to the FAQ for more information on this.

IMPORTANT: Making this application's network ports public is a significant security risk. You are strongly advised to only allow access to those ports from trusted networks. If, for development purposes, you need to access from outside of a trusted network, please do not allow access to those ports via a public IP address. Instead, use a secure channel such as a VPN or an SSH tunnel. Follow these instructions to remotely connect safely and reliably.

If you want to use a transport connector to use RabbitMQ from a different machine, stop your RabbitMQ server and edit the /opt/bitnami/rabbitmq/etc/rabbitmq/rabbitmq.config file, setting the bind address from 127.0.0.1 to 0.0.0.0:

...
{rabbit,
  [%%
   %% Network Connectivity
   %% ====================
   %%

   %% By default, RabbitMQ will listen on all interfaces, using
   %% the standard (reserved) AMQP port.
   %%
    {tcp_listeners, [5672]},
...

If you don't want to connect to the management console from a different machine, edit the same file with the following configuration:

...
{rabbitmq_management,
[%% Pre-Load schema definitions from the following JSON file. See
 %% http://www.rabbitmq.com/management.html#load-definitions
 %%
 %% {load_definitions, "/path/to/schema.json"},

 %% Log all requests to the management HTTP API to a file.
 %%
 %% {http_log_dir, "/path/to/access.log"},

 %% Change the port on which the HTTP listener listens,
 %% specifying an interface for the web server to bind to.
 %% Also set the listener to use SSL and provide SSL options.
 %%
  {listener, [{port, 15672},{ip, "127.0.0.1"}]}
...

Restart the server for the changes to come into effect.

To connect to RabbitMQ from a different machine, use a command like the one below:

$ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD list vhosts

How can I run a command in the Bitnami RabbitMQ Stack?

Log in to the server console as the bitnami user and run the command as usual. The required environment is automatically loaded for the bitnami user.

How to enable a plugin on RabbitMQ?

To enable a plugin on RabbitMQ you have to follow the next steps:

  • Log in to your server console.

  • Run the following command to list all the plugins:

    $ sudo /opt/bitnami/rabbitmq/sbin/rabbitmq-plugins list
    
  • Run this command to enable one of them:

    $ sudo /opt/bitnami/rabbitmq/sbin/rabbitmq-plugins enable PLUGIN_NAME
    

Find out more about RabbitMQ's plugins.

How to use the admin console of RabbitMQ?

To use the RabbitMQ admin console, follow these steps:

  • Download the rabbitmqadmin application from http://SERVER-IP:15672/cli/. You will need Python 2.5, 2.6 or later.

  • Copy rabbitmqadmin to /usr/local/bin/ and give it execution permissions.

       $ chmod +x rabbitmqadmin
    
  • Invoke the following for usage instructions:

       $ rabbitmqadmin --help
    

    This command allows you to:

    • list exchanges, queues, bindings, vhosts, users, permissions, connections and channels.
    • show overview information.
    • declare and delete exchanges, queues, bindings, vhosts, users and permissions.
    • publish and get messages.
    • close connections and purge queues.
    • import and export configuration.

Examples:

  • To connect to your machine and list the vhosts that there are created:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD list vhosts
    
  • To declare a new user:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD declare user name=NEW_USER_NAME password=NEW_PASSWORD tags=username
    
  • To give access to the new user:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD declare permission vhost=/ user=NEW_USER_NAME configure=.* write=.* read=.*
    
    NOTE: You have to specify where the new user can configure, write or write. Use .* to specify all the exchanges in the vhost.
  • To delete a user:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD delete user name=NEW_USER_NAME
    
  • To declare an exchange:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD declare exchange name=NEW_EXCHANGE_NAME type=fanout
    
  • To declare a queue with optional parameters:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD declare queue name=NEW_QUEUE_NAME durable=false
    
  • To publish a message:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD publish exchange=amq.default routing_key=QUEUE_NAME payload="hello, world"
    
  • And to get it back:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD  get queue=QUEUE_NAME requeue=false
    
  • To export a configuration:

     $ rabbitmqadmin -H -u USER_NAME -p PASSWORD export rabbit.config
    
  • To import a configuration:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD -q import rabbit.config
    
  • To close all connections:

     $ rabbitmqadmin -H SERVER-IP -u USER_NAME -p PASSWORD -f tsv -q list connections name | while read conn ; do rabbitmqadmin -q close connection name=${conn} ; done
    

How to upgrade RabbitMQ?

It is strongly recommended to create a backup before starting the update process. If you have important data, create and try to restore a backup to ensure that everything works properly.

You can upgrade the application only without modifying any other stack components. Follow these steps:

  • Stop your server.

     $ sudo /opt/bitnami/ctlscript.sh stop rabbitmq
    
  • Copy the etc/, var/ and rabbitmq_home/ folders in the rabbitmq/ folder.

     $ mkdir ~/rabbitmq_backup
     $ sudo cp -r /opt/bitnami/rabbitmq/etc ~/rabbitmq_backup/
     $ sudo cp -r /opt/bitnami/rabbitmq/var ~/rabbitmq_backup/
     $ sudo cp -r /opt/bitnami/rabbitmq/rabbitmq_home ~/rabbitmq_backup
    
  • Download the latest version of RabbitMQ and uncompress it.

     $ tar -xvf rabbitmq-server-generic-unix-3.4.2.tar.g
    
  • Copy the uncompressed folder to /opt/bitnami/rabbitmq:

     $ sudo cp -r rabbitmq_server-3.4.2/* /opt/bitnami/rabbitmq/
    
  • Recover your backup files.

     $ sudo cp -r ~/rabbitmq_backup/* /opt/bitnami/rabbitmq/
    
  • Restart your server.

     $ sudo /opt/bitnami/ctlscript.sh start rabbitmq
    

How to create a full backup of RabbitMQ?

Backup

The Bitnami RabbitMQ Stack is self-contained and the simplest option for performing a backup is to copy or compress the Bitnami stack installation directory. To do so in a safe manner, you will need to stop all servers, so this method may not be appropriate if you have people accessing the application continuously.

Follow these steps:

  • Change to the directory in which you wish to save your backup:

      $ cd /your/directory
    
  • Stop all servers:

      $ sudo /opt/bitnami/ctlscript.sh stop
    
  • Create a compressed file with the stack contents:

      $ sudo tar -pczvf application-backup.tar.gz /opt/bitnami
    
  • Restart all servers:

      $ sudo /opt/bitnami/ctlscript.sh start
    

You should now download or transfer the application-backup.tar.gz file to a safe location.

Restore

Follow these steps:

  • Change to the directory containing your backup:

      $ cd /your/directory
    
  • Stop all servers:

      $ sudo /opt/bitnami/ctlscript.sh stop
    
  • Move the current stack to a different location:

      $ sudo mv /opt/bitnami /tmp/bitnami-backup
    
  • Uncompress the backup file to the original directoryv

      $ sudo tar -pxzvf application-backup.tar.gz -C /
    
  • Start all servers:

      $ sudo /opt/bitnami/ctlscript.sh start
    

If you want to create only a database backup, refer to these instructions for MySQL and PostgreSQL.

How to debug RabbitMQ errors?

To debug RabbitMQ's errors, check the log files of RabbitMQ at /opt/bitnami/rabbitmq/var.

How to change the RabbitMQ user password?

You can modify the RabbitMQ user password by running the following command:

$ sudo rabbitmqctl change_password USER_NAME NEW_PASSWORD
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