webcenter/activemq repository overview

⁠Table of Contents

• Introduction⁠
  • Version⁠
  • Changelog⁠
• Hardware Requirements⁠
  • CPU⁠
  • Memory⁠
  • Storage⁠
• Contributing⁠
• Issues⁠
• Installation⁠
• Quick Start⁠
• Configuration⁠
  • ACCESS⁠
  • QUEUE⁠
  • TOPIC⁠
  • Data Store⁠
  • BROKER⁠
  • Disk usage⁠
  • JMX⁠
  • Avaible Configuration Parameters⁠
  • Advance configuration⁠
• References⁠

⁠Introduction

Dockerfile to build a ActiveMQ container image.

⁠Version

Current Version: 5.15.2

⁠Hardware Requirements

⁠CPU

• No stats avaible to say the number of core in function of messages

⁠Memory

• 512MB is too little memory, i think is to use ActiveMQ on test environment
• 1GB is the standard memory size

You can set the memory that you need :

docker run --name='activemq' -it --rm \
	-e 'ACTIVEMQ_CONFIG_MINMEMORY=512' \
	-e 'ACTIVEMQ_CONFIG_MAXMEMORY=2048'\
        -P
	webcenter/activemq:latest

This sample lauch ActiveMQ in docker with 512 MB of memory, and then ACtiveMQ can take 2048 MB of max memory

⁠Storage

The necessary hard drive space depends if you use persistant message or not and the type of appender. Normaly, no need space for ActiveMQ because the most data are contains directly on memory. I think it depends on how you use ActiveMQ ;)

⁠Contributing

If you find this image useful here's how you can help:

• Send a Pull Request with your awesome new features and bug fixes
• Help new users with Issues⁠ they may encounter
• Send me a tip via Bitcoin⁠ or using Gratipay⁠

⁠Issues

Fedora and RHEL/CentOS users should try disabling selinux with setenforce 0 and check if resolves the issue. If it does than there is not much that I can help you with. You can either stick with selinux disabled (not recommended by redhat) or switch to using ubuntu.

If using the latest docker version and/or disabling selinux does not fix the issue then please file a issue request on the issues⁠ page.

In your issue report please make sure you provide the following information:

• The host distribution and release version.
• Output of the docker version command
• Output of the docker info command
• The docker run command you used to run the image (mask out the sensitive bits).

⁠Installation

Pull the image from the docker index. This is the recommended method of installation as it is easier to update image. These builds are performed by the Docker Trusted Build service.

docker pull webcenter/activemq:5.15.2

You can also pull the latest tag which is built from the repository HEAD

docker pull webcenter/activemq:latest

Alternately you can build the image locally.

git clone https://github.com/disaster37/activemq.git
cd activemq
docker build --tag="$USER/activemq" .

⁠Quick Start

You can launch the image using the docker command line :

• For test purpose :

docker run --name='activemq' -it --rm -P \
webcenter/activemq:latest

The account admin is "admin" and password is "admin". All settings is the default ActiveMQ's settings.

• For production purpose :

docker run --name='activemq' -d \
-e 'ACTIVEMQ_CONFIG_NAME=amqp-srv1' \
-e 'ACTIVEMQ_CONFIG_DEFAULTACCOUNT=false' \
-e 'ACTIVEMQ_ADMIN_LOGIN=admin' -e 'ACTIVEMQ_ADMIN_PASSWORD=your_password' \
-e 'ACTIVEMQ_USERS_myproducer=producerpassword' -e 'ACTIVEMQ_GROUPS_writes=myproducer' \
-e 'ACTIVEMQ_USERS_myconsumer=consumerpassword' -e 'ACTIVEMQ_GROUPS_reads=myconsumer' \
-e 'ACTIVEMQ_JMX_user1_role=readwrite' -e 'ACTIVEMQ_JMX_user1_password=jmx_password' \
-e 'ACTIVEMQ_JMX_user2_role=read' -e 'ACTIVEMQ_JMX_user2_password=jmx2_password'
-e 'ACTIVEMQ_CONFIG_TOPICS_topic1=mytopic1' -e 'ACTIVEMQ_CONFIG_TOPICS_topic2=mytopic2'  \
-e 'ACTIVEMQ_CONFIG_QUEUES_queue1=myqueue1' -e 'ACTIVEMQ_CONFIG_QUEUES_queue2=myqueue2'  \
-e 'ACTIVEMQ_CONFIG_MINMEMORY=1024' -e  'ACTIVEMQ_CONFIG_MAXMEMORY=4096' \
-e 'ACTIVEMQ_CONFIG_SCHEDULERENABLED=true' \
-v /data/activemq:/data \
-v /var/log/activemq:/var/log/activemq \
-p 8161:8161 \
-p 61616:61616 \
-p 61613:61613 \
webcenter/activemq:5.14.3

Or you can use docker-compose⁠. Assuming you have docker-compose installed,

wget https://raw.githubusercontent.com/disaster37/activemq/master/docker-compose.yml
docker-compose up

⁠Configuration

⁠ACCESS

⁠Regular users

You can use the following variables to create regular users:

• ACTIVEMQ_ACTIVEMQ_USERS_X: Where X is the username and the value is the password.
• ACTIVEMQ_GROUPS_Y: Where Y is the group name and the value is the list of user, separated by a comma

You can use the following groups to put right on topic or queue:

• writes: can read and write on all topics and queues
• reads: can read on all topics and queues
• owners: can read, write and own all topics and queues

⁠Admin user

Or to create administrator, you can use:

• ACTIVEMQ_ADMIN_LOGIN: the admin login
• ACTIVEMQ_ADMIN_PASSWORD: the admin password

⁠Disable default account

You can use the following to disable default account:

• ACTIVEMQ_CONFIG_DEFAULTACCOUNT: false to disable default account.

⁠QUEUE

You can create static queue with the following variable:

• ACTIVEMQ_CONFIG_QUEUES_X: Where X is the logical name without special char and the value is the real queue name.

⁠TOPIC

You can create static topic with the following variable:

• ACTIVEMQ_CONFIG_TOPICS_X: Where X is the logical name without special char and the value is the real topic name.

⁠Data Store

For moment, you can't change the data store. It's kahadb. The data is store on /data.

⁠BROKER

todo

⁠Disk usage

You can use the following variables to limit the disk usage:

• ACTIVEMQ_CONFIG_STOREUSAGE: the store usage limit. Default is 100 gb
• ACTIVEMQ_CONFIG_TEMPUSAGE: the temp usage limit. Default is 50 gb

⁠JMX

You can control JMX access with the following variables:

• ACTIVEMQ_JMX_X_ROLE: Where X is the username and the value is the role (read or readwrite)
• ACTIVEMQ_JMX_X_PASSWORD: Where X is the username and the value is the password

⁠Avaible Configuration Parameters

Please refer the docker run command options for the --env-file flag where you can specify all required environment variables in a single file. This will save you from writing a potentially long docker run command. Alternately you can use docker-compose.

⁠Confd

The ActiveMQ setting is managed by Confd. So you can custom it:

• CONFD_BACKEND: The Confd backend that you should use. Default is env.
• CONFD_NODES: The array of Confd URL to contact the backend. No default value.
• CONFD_PREFIX_KEY: The Confd prefix key. Default is /activemq

⁠ActiveMQ parameters

Below is the complete list of available options that can be used to customize your activemq installation.

• ACTIVEMQ_CONFIG_NAME: The hostname of ActiveMQ server. Default to localhost

• ACTIVEMQ_LOGGER_LOGLEVEL: The log level. Default to INFO

• ACTIVEMQ_CONFIG_PENDINGMESSAGELIMIT: It is used to prevent slow topic consumers to block producers and affect other consumers by limiting the number of messages that are retained. Default to 1000

• ACTIVEMQ_CONFIG_STORAGEUSAGE: The maximum amount of space storage the broker will use before disabling caching and/or slowing down producers. Default to 100 gb

• ACTIVEMQ_CONFIG_TEMPUSAGE: The maximum amount of space temp the broker will use before disabling caching and/or slowing down producers. Default to 50 gb

• ACTIVEMQ_CONFIG_MAXCONNECTION: It's DOS protection. It limit concurrent connections. Default to 1000

• ACTIVEMQ_CONFIG_FRAMESIZE: It's DOS protection. It limit the frame size. Default to 104857600 (100MB)

• ACTIVEMQ_CONFIG_SCHEDULERENABLED: Permit to enabled scheduler in ActiveMQ. Default to true

• ACTIVEMQ_CONFIG_AUTHENABLED: Permit to enabled the authentification in queue and topic (no anonymous access). Default to false

• ACTIVEMQ_CONFIG_MINMEMORY: The init memory in MB that ActiveMQ take when start (it's like XMS). Default to 128 (128 MB)

• ACTIVEMQ_CONFIG_MAXMEMORY: The max memory in MB that ActiveMQ can take (it's like XMX). Default to 1024 (1024 MB)

• ACTIVEMQ_DEFAULTACCOUNT: It's permit to remove all default login on ActiveMQ (Webconsole, broker and JMX). Default to true

• ACTIVEMQ_ADMIN_LOGIN: The login for admin account (broker and web console). Default to admin

• ACTIVEMQ_ADMIN_PASSWORD: The password for admin account. Default to admin

• ACTIVEMQ_USERS_X: Where X is the username and password is the value.

• ACTIVEMQ_GROUPS_X: Where X is the group and list user separated by a comma is the value.

• ACTIVEMQ_JMX_X_ROLE: Where X is the username and role is the value.

• ACTIVEMQ_JMX_X_PASSWORD: Where X is the username and password is the value.

• ACTIVEMQ_CONFIG_TOPICS_X: Where X is the logical topics name (wihtout special char) and real topic name is the value.

• ACTIVEMQ_CONFIG_QUEUES_X: Where X is the logical queue name (wihtout special char) and real queue name is the value.

⁠Advance configuration

For advance configuration, the best way is to read ActiveMQ documentation and created your own setting file like activemq.xml. Next, you can mount it when you run this image or you can create your own image (base on this image) and include your specifics config file.

The home of ActiveMQ is in /opt/activemq, so if you want to override all the setting, you can launch docker with -v /your_path/conf:/opt/activemq/conf. If you overload the config, don't forget to disable confd or change the template instead to change activemq config /opt/confd/etc/templates.