Network partitions and split-brain in RabbitMQ - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to enable automatic network partition handling in RabbitMQ configuration.

RabbitMQ

cluster_partition_handling = [1]

Drag options to blanks, or click blank then click option'

Aautoheal

Bstop

Cpause_minority

Dignore

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'ignore' which causes split-brain issues.

Choosing 'stop' which halts nodes instead of healing.

The autoheal setting allows RabbitMQ to automatically recover from network partitions by healing the cluster.

2fill in blank

medium

Complete the command to check the current cluster status in RabbitMQ.

RabbitMQ

rabbitmqctl [1]

Drag options to blanks, or click blank then click option'

Alist_nodes

Bcluster_status

Cstatus

Dlist_queues

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'status' which only shows local node info.

Using 'list_queues' which lists queues, not cluster status.

The cluster_status command shows the current status of the RabbitMQ cluster including nodes and partitions.

3fill in blank

hard

Fix the error in the command to force a node to forget a partitioned node.

RabbitMQ

rabbitmqctl forget_[1] rabbit@node2

Drag options to blanks, or click blank then click option'

Acluster_node

Bpartition

Ccluster

Dnode_name

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'forget_partition' which is not a valid command.

Using 'forget_cluster' which does not exist.

The correct command is rabbitmqctl forget_cluster_node rabbit@node2 to remove a partitioned node from the cluster.

4fill in blank

hard

Fill both blanks to configure RabbitMQ to pause minority nodes during network partitions.

RabbitMQ

cluster_partition_handling = [1]
ha-mode = [2]

Drag options to blanks, or click blank then click option'

Apause_minority

Ball

Cexactly

Dignore

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ignore' for partition handling which causes split-brain.

Using 'exactly' for ha-mode which is incomplete without a number.

Setting cluster_partition_handling to pause_minority pauses nodes in the minority partition. Setting ha-mode to all replicates queues to all nodes.

5fill in blank

hard

Fill all three blanks to create a policy that automatically syncs mirrored queues after a network partition.

RabbitMQ

rabbitmqctl set_policy [1] "^" '{{"ha-mode": "[2]", "ha-sync-mode": "[3]"}}' --apply-to queues

Drag options to blanks, or click blank then click option'

Async_all

Ball

Cautomatic

Dpause_minority

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'pause_minority' as ha-sync-mode which is invalid.

Using 'manual' instead of 'automatic' for ha-sync-mode.

The policy name is sync_all. The ha-mode is set to all to mirror queues to all nodes. The ha-sync-mode is set to automatic to sync queues automatically after partitions heal.