Combine ha-mode with queue-master-locator in a RabbitMQ cluster











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In a RabbitMQ cluster, I know that the queues can be created with their masters on different nodes, using the "min-masters" strategy of the "queue_master_locator" policy. This would mean that the queues are no longer mirrored(ha-mode policy cant be applied), as only one policy can be applied at a time. Is there a way to accomplish both?
I basically want to have the queues distributed across cluster nodes, so the memory footprint on a single node is reduced.










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    up vote
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    down vote

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    In a RabbitMQ cluster, I know that the queues can be created with their masters on different nodes, using the "min-masters" strategy of the "queue_master_locator" policy. This would mean that the queues are no longer mirrored(ha-mode policy cant be applied), as only one policy can be applied at a time. Is there a way to accomplish both?
    I basically want to have the queues distributed across cluster nodes, so the memory footprint on a single node is reduced.










    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      In a RabbitMQ cluster, I know that the queues can be created with their masters on different nodes, using the "min-masters" strategy of the "queue_master_locator" policy. This would mean that the queues are no longer mirrored(ha-mode policy cant be applied), as only one policy can be applied at a time. Is there a way to accomplish both?
      I basically want to have the queues distributed across cluster nodes, so the memory footprint on a single node is reduced.










      share|improve this question













      In a RabbitMQ cluster, I know that the queues can be created with their masters on different nodes, using the "min-masters" strategy of the "queue_master_locator" policy. This would mean that the queues are no longer mirrored(ha-mode policy cant be applied), as only one policy can be applied at a time. Is there a way to accomplish both?
      I basically want to have the queues distributed across cluster nodes, so the memory footprint on a single node is reduced.







      rabbitmq message-queue high-availability rabbitmqctl






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      asked Nov 19 at 11:06









      chaitra.kear

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          queue_master_locator=min-masters policy means that the master queue node is automatically assigned using the rabbitmq node with less masters.



          This is not related to ha-mirror policy.



          you have 3 ways to solve the problem:




          1. create a single policy with both the features in this way:enter image description here


          2. create only the ha policy and add the arg x-queue-master-locator to each single queue:
            enter image description here


          3. create only the ha policy and use the rabbitmq config file to define the x-queue-master-locator, see here for more details: https://www.rabbitmq.com/configure.html#configuration-file



          Also suggesto to read this blog post about that.






          share|improve this answer























          • Thanks Gabriele, I went ahead with the third approach, and it seems to work as expected
            – chaitra.kear
            Nov 23 at 6:10











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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          2
          down vote



          accepted










          queue_master_locator=min-masters policy means that the master queue node is automatically assigned using the rabbitmq node with less masters.



          This is not related to ha-mirror policy.



          you have 3 ways to solve the problem:




          1. create a single policy with both the features in this way:enter image description here


          2. create only the ha policy and add the arg x-queue-master-locator to each single queue:
            enter image description here


          3. create only the ha policy and use the rabbitmq config file to define the x-queue-master-locator, see here for more details: https://www.rabbitmq.com/configure.html#configuration-file



          Also suggesto to read this blog post about that.






          share|improve this answer























          • Thanks Gabriele, I went ahead with the third approach, and it seems to work as expected
            – chaitra.kear
            Nov 23 at 6:10















          up vote
          2
          down vote



          accepted










          queue_master_locator=min-masters policy means that the master queue node is automatically assigned using the rabbitmq node with less masters.



          This is not related to ha-mirror policy.



          you have 3 ways to solve the problem:




          1. create a single policy with both the features in this way:enter image description here


          2. create only the ha policy and add the arg x-queue-master-locator to each single queue:
            enter image description here


          3. create only the ha policy and use the rabbitmq config file to define the x-queue-master-locator, see here for more details: https://www.rabbitmq.com/configure.html#configuration-file



          Also suggesto to read this blog post about that.






          share|improve this answer























          • Thanks Gabriele, I went ahead with the third approach, and it seems to work as expected
            – chaitra.kear
            Nov 23 at 6:10













          up vote
          2
          down vote



          accepted







          up vote
          2
          down vote



          accepted






          queue_master_locator=min-masters policy means that the master queue node is automatically assigned using the rabbitmq node with less masters.



          This is not related to ha-mirror policy.



          you have 3 ways to solve the problem:




          1. create a single policy with both the features in this way:enter image description here


          2. create only the ha policy and add the arg x-queue-master-locator to each single queue:
            enter image description here


          3. create only the ha policy and use the rabbitmq config file to define the x-queue-master-locator, see here for more details: https://www.rabbitmq.com/configure.html#configuration-file



          Also suggesto to read this blog post about that.






          share|improve this answer














          queue_master_locator=min-masters policy means that the master queue node is automatically assigned using the rabbitmq node with less masters.



          This is not related to ha-mirror policy.



          you have 3 ways to solve the problem:




          1. create a single policy with both the features in this way:enter image description here


          2. create only the ha policy and add the arg x-queue-master-locator to each single queue:
            enter image description here


          3. create only the ha policy and use the rabbitmq config file to define the x-queue-master-locator, see here for more details: https://www.rabbitmq.com/configure.html#configuration-file



          Also suggesto to read this blog post about that.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 19 at 13:38

























          answered Nov 19 at 11:45









          Gabriele

          14.3k42233




          14.3k42233












          • Thanks Gabriele, I went ahead with the third approach, and it seems to work as expected
            – chaitra.kear
            Nov 23 at 6:10


















          • Thanks Gabriele, I went ahead with the third approach, and it seems to work as expected
            – chaitra.kear
            Nov 23 at 6:10
















          Thanks Gabriele, I went ahead with the third approach, and it seems to work as expected
          – chaitra.kear
          Nov 23 at 6:10




          Thanks Gabriele, I went ahead with the third approach, and it seems to work as expected
          – chaitra.kear
          Nov 23 at 6:10


















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