安装RabbitMQ
xuej@xuej-VirtualBox:~/Downloads$ vim cloudsmith-quick-start-script.sh
#!/bin/bash
sudo apt-get install curl gnupg apt-transport-https -y
## Team RabbitMQ's main signing key
curl -1sLf "https://keys.openpgp.org/vks/v1/by-fingerprint/0A9AF2115F4687BD29803A206B73A36E6026DFCA" | sudo gpg --dearmor | sudo tee /usr/share/keyrings/com.rabbitmq.team.gpg > /dev/null
## Cloudsmith: modern Erlang repository
curl -1sLf https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-erlang/gpg.E495BB49CC4BBE5B.key | sudo gpg --dearmor | sudo tee /usr/share/keyrings/io.cloudsmith.rabbitmq.E495BB49CC4BBE5B.gpg > /dev/null
## Cloudsmith: RabbitMQ repository
curl -1sLf https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-server/gpg.9F4587F226208342.key | sudo gpg --dearmor | sudo tee /usr/share/keyrings/io.cloudsmith.rabbitmq.9F4587F226208342.gpg > /dev/null
## Add apt repositories maintained by Team RabbitMQ
sudo tee /etc/apt/sources.list.d/rabbitmq.list <<EOF
## Provides modern Erlang/OTP releases
##
deb [signed-by=/usr/share/keyrings/io.cloudsmith.rabbitmq.E495BB49CC4BBE5B.gpg] https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-erlang/deb/ubuntu bionic main
deb-src [signed-by=/usr/share/keyrings/io.cloudsmith.rabbitmq.E495BB49CC4BBE5B.gpg] https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-erlang/deb/ubuntu bionic main
## Provides RabbitMQ
##
deb [signed-by=/usr/share/keyrings/io.cloudsmith.rabbitmq.9F4587F226208342.gpg] https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-server/deb/ubuntu bionic main
deb-src [signed-by=/usr/share/keyrings/io.cloudsmith.rabbitmq.9F4587F226208342.gpg] https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-server/deb/ubuntu bionic main
EOF
## Update package indices
sudo apt-get update -y
## Install Erlang packages
sudo apt-get install -y erlang-base \
erlang-asn1 erlang-crypto erlang-eldap erlang-ftp erlang-inets \
erlang-mnesia erlang-os-mon erlang-parsetools erlang-public-key \
erlang-runtime-tools erlang-snmp erlang-ssl \
erlang-syntax-tools erlang-tftp erlang-tools erlang-xmerl
## Install rabbitmq-server and its dependencies
sudo apt-get install rabbitmq-server -y --fix-missing
"cloudsmith-quick-start-script.sh" 36L, 2144C 1,1 All
xuej@xuej-VirtualBox:~/Downloads$ chmod +x cloudsmith-quick-start-script.sh
xuej@xuej-VirtualBox:~/Downloads$ ./cloudsmith-quick-start-script.sh
[sudo] password for xuej:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
dirmngr gnupg-l10n gnupg-utils gpg gpg-agent gpg-wks-client gpg-wks-server gpgconf gpgsm gpgv
Suggested packages:
tor parcimonie xloadimage scdaemon
The following NEW packages will be installed:
apt-transport-https curl
The following packages will be upgraded:
dirmngr gnupg gnupg-l10n gnupg-utils gpg gpg-agent gpg-wks-client gpg-wks-server gpgconf gpgsm gpgv
11 upgraded, 2 newly installed, 0 to remove and 164 not upgraded.
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gpg: WARNING: unsafe ownership on homedir '/home/xuej/.gnupg'
gpg: WARNING: unsafe ownership on homedir '/home/xuej/.gnupg'
gpg: WARNING: unsafe ownership on homedir '/home/xuej/.gnupg'
## Provides modern Erlang/OTP releases
##
deb [signed-by=/usr/share/keyrings/io.cloudsmith.rabbitmq.E495BB49CC4BBE5B.gpg] https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-erlang/deb/ubuntu bionic main
deb-src [signed-by=/usr/share/keyrings/io.cloudsmith.rabbitmq.E495BB49CC4BBE5B.gpg] https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-erlang/deb/ubuntu bionic main
## Provides RabbitMQ
##
deb [signed-by=/usr/share/keyrings/io.cloudsmith.rabbitmq.9F4587F226208342.gpg] https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-server/deb/ubuntu bionic main
deb-src [signed-by=/usr/share/keyrings/io.cloudsmith.rabbitmq.9F4587F226208342.gpg] https://dl.cloudsmith.io/public/rabbitmq/rabbitmq-server/deb/ubuntu bionic main
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Reading package lists... Done
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The following additional packages will be installed:
libsctp1
Suggested packages:
erlang erlang-manpages erlang-doc lksctp-tools
The following NEW packages will be installed:
erlang-asn1 erlang-base erlang-crypto erlang-eldap erlang-ftp erlang-inets erlang-mnesia erlang-os-mon erlang-parsetools erlang-public-key erlang-runtime-tools erlang-snmp erlang-ssl
erlang-syntax-tools erlang-tftp erlang-tools erlang-xmerl libsctp1
0 upgraded, 18 newly installed, 0 to remove and 166 not upgraded.
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Reading package lists... Done
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Reading state information... Done
The following NEW packages will be installed:
rabbitmq-server
0 upgraded, 1 newly installed, 0 to remove and 166 not upgraded.
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Setting up rabbitmq-server (3.10.5-1) ...
Adding group `rabbitmq' (GID 129) ...
Done.
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xuej@xuej-VirtualBox:~/Downloads$ systemctl status rabbitmq-server.service
● rabbitmq-server.service - RabbitMQ broker
Loaded: loaded (/lib/systemd/system/rabbitmq-server.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2022-06-07 23:52:01 CST; 24s ago
Main PID: 13113 (beam.smp)
Tasks: 24 (limit: 2326)
CGroup: /system.slice/rabbitmq-server.service
├─13113 /usr/lib/erlang/erts-13.0/bin/beam.smp -W w -MBas ageffcbf -MHas ageffcbf -MBlmbcs 512 -MHlmbcs 512 -MMmcs 30 -P 1048576 -t 5000000 -stbt db -zdbbl 128000 -sbwt none -sbwtdcpu none -sb
├─13123 erl_child_setup 32768
├─13151 /usr/lib/erlang/erts-13.0/bin/epmd -daemon
├─13174 /usr/lib/erlang/erts-13.0/bin/inet_gethost 4
└─13175 /usr/lib/erlang/erts-13.0/bin/inet_gethost 4
6月 07 23:51:58 xuej-VirtualBox rabbitmq-server[13113]: Doc guides: https://rabbitmq.com/documentation.html
6月 07 23:51:58 xuej-VirtualBox rabbitmq-server[13113]: Support: https://rabbitmq.com/contact.html
6月 07 23:51:58 xuej-VirtualBox rabbitmq-server[13113]: Tutorials: https://rabbitmq.com/getstarted.html
6月 07 23:51:58 xuej-VirtualBox rabbitmq-server[13113]: Monitoring: https://rabbitmq.com/monitoring.html
6月 07 23:51:58 xuej-VirtualBox rabbitmq-server[13113]: Logs: /var/log/rabbitmq/rabbit@xuej-VirtualBox.log
6月 07 23:51:58 xuej-VirtualBox rabbitmq-server[13113]: /var/log/rabbitmq/rabbit@xuej-VirtualBox_upgrade.log
6月 07 23:51:58 xuej-VirtualBox rabbitmq-server[13113]: <stdout>
6月 07 23:51:58 xuej-VirtualBox rabbitmq-server[13113]: Config file(s): (none)
6月 07 23:52:01 xuej-VirtualBox rabbitmq-server[13113]: Starting broker... completed with 0 plugins.
6月 07 23:52:01 xuej-VirtualBox systemd[1]: Started RabbitMQ broker.
部署RabbitMQ Cluster
修改rabbit1的hosts
xuej@xuej-VirtualBox:~$ sudo vi /etc/hosts
xuej@xuej-VirtualBox:~$ sudo cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 xuej-VirtualBox
192.168.246.37 rabbit1
192.168.246.38 rabbit2
192.168.246.39 rabbit3
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
xuej@xuej-VirtualBox:~$ sudo hostnamectl --transient --static --pretty set-hostname rabbit1
修改rabbit2的hosts
xuej@xuej-VirtualBox:~$ sudo vi /etc/hosts
xuej@xuej-VirtualBox:~$ sudo hostnamectl --transient --static --pretty set-hostname rabbit2
修改rabbit3的hosts
xuej@xuej-VirtualBox:~$ sudo vi /etc/hosts
xuej@xuej-VirtualBox:~$ sudo hostnamectl --transient --static --pretty set-hostname rabbit3
重新登陆所有节点
启动rabbit1的实例
xuej@rabbit1:~$ sudo systemctl stop rabbitmq-server.service
[sudo] password for xuej:
xuej@rabbit1:~$ sudo rabbitmq-server -detached
xuej@rabbit1:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit@rabbit1 ...
Basics
Cluster name: rabbit@rabbit1
Disk Nodes
rabbit@rabbit1
Running Nodes
rabbit@rabbit1
Versions
rabbit@rabbit1: RabbitMQ 3.10.5 on Erlang 25.0
Maintenance status
Node: rabbit@rabbit1, status: not under maintenance
Alarms
(none)
Network Partitions
(none)
Listeners
Node: rabbit@rabbit1, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit1, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Feature flags
Flag: classic_mirrored_queue_version, state: enabled
Flag: implicit_default_bindings, state: enabled
Flag: maintenance_mode_status, state: enabled
Flag: quorum_queue, state: enabled
Flag: stream_queue, state: enabled
Flag: user_limits, state: enabled
Flag: virtual_host_metadata, state: enabled
启动rabbit2的实例
xuej@rabbit2:~$ sudo systemctl stop rabbitmq-server.service
[sudo] password for xuej:
xuej@rabbit2:~$ sudo rabbitmq-server -detached
xuej@rabbit2:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit@rabbit2 ...
Basics
Cluster name: rabbit@rabbit2
Disk Nodes
rabbit@rabbit2
Running Nodes
rabbit@rabbit2
Versions
rabbit@rabbit2: RabbitMQ 3.10.5 on Erlang 25.0
Maintenance status
Node: rabbit@rabbit2, status: not under maintenance
Alarms
(none)
Network Partitions
(none)
Listeners
Node: rabbit@rabbit2, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit2, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Feature flags
Flag: classic_mirrored_queue_version, state: enabled
Flag: implicit_default_bindings, state: enabled
Flag: maintenance_mode_status, state: enabled
Flag: quorum_queue, state: enabled
Flag: stream_queue, state: enabled
Flag: user_limits, state: enabled
Flag: virtual_host_metadata, state: enabled
启动rabbit3的实例
xuej@rabbit3:~$ sudo systemctl stop rabbitmq-server.service
[sudo] password for xuej:
xuej@rabbit3:~$ sudo rabbitmq-server -detached
xuej@rabbit3:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit@rabbit3 ...
Basics
Cluster name: rabbit@rabbit3
Disk Nodes
rabbit@rabbit3
Running Nodes
rabbit@rabbit3
Versions
rabbit@rabbit3: RabbitMQ 3.10.5 on Erlang 25.0
Maintenance status
Node: rabbit@rabbit3, status: not under maintenance
Alarms
(none)
Network Partitions
(none)
Listeners
Node: rabbit@rabbit3, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit3, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Feature flags
Flag: classic_mirrored_queue_version, state: enabled
Flag: implicit_default_bindings, state: enabled
Flag: maintenance_mode_status, state: enabled
Flag: quorum_queue, state: enabled
Flag: stream_queue, state: enabled
Flag: user_limits, state: enabled
Flag: virtual_host_metadata, state: enabled
构建集群
xuej@rabbit2:~$ sudo rabbitmqctl join_cluster rabbit@rabbit1
Clustering node rabbit@rabbit2 with rabbit@rabbit1
02:03:05.095 [warning] Feature flags: the previous instance of this node must have failed to write the `feature_flags` file at `/var/lib/rabbitmq/mnesia/rabbit@rabbit2-feature_flags`:
02:03:05.095 [warning] Feature flags: - list of previously disabled feature flags now marked as such: [:maintenance_mode_status]
02:03:05.257 [warning] Feature flags: the previous instance of this node must have failed to write the `feature_flags` file at `/var/lib/rabbitmq/mnesia/rabbit@rabbit2-feature_flags`:
02:03:05.257 [warning] Feature flags: - list of previously enabled feature flags now marked as such: [:maintenance_mode_status]
02:03:05.277 [error] Failed to create a tracked connection table for node :rabbit@rabbit2: {:node_not_running, :rabbit@rabbit2}
02:03:05.278 [error] Failed to create a per-vhost tracked connection table for node :rabbit@rabbit2: {:node_not_running, :rabbit@rabbit2}
02:03:05.279 [error] Failed to create a per-user tracked connection table for node :rabbit@rabbit2: {:node_not_running, :rabbit@rabbit2}
xuej@rabbit2:~$ sudo rabbitmqctl join_cluster rabbit@rabbit1
Clustering node rabbit@rabbit2 with rabbit@rabbit1
The node is already a member of this cluster
xuej@rabbit3:~$ sudo rabbitmqctl join_cluster rabbit@rabbit2
Clustering node rabbit@rabbit3 with rabbit@rabbit2
02:12:42.373 [warning] Feature flags: the previous instance of this node must have failed to write the `feature_flags` file at `/var/lib/rabbitmq/mnesia/rabbit@rabbit3-feature_flags`:
02:12:42.373 [warning] Feature flags: - list of previously disabled feature flags now marked as such: [:maintenance_mode_status]
02:12:42.562 [warning] Feature flags: the previous instance of this node must have failed to write the `feature_flags` file at `/var/lib/rabbitmq/mnesia/rabbit@rabbit3-feature_flags`:
02:12:42.562 [warning] Feature flags: - list of previously enabled feature flags now marked as such: [:maintenance_mode_status]
02:12:42.585 [error] Failed to create a tracked connection table for node :rabbit@rabbit3: {:node_not_running, :rabbit@rabbit3}
02:12:42.588 [error] Failed to create a per-vhost tracked connection table for node :rabbit@rabbit3: {:node_not_running, :rabbit@rabbit3}
02:12:42.588 [error] Failed to create a per-user tracked connection table for node :rabbit@rabbit3: {:node_not_running, :rabbit@rabbit3}
xuej@rabbit3:~$ sudo rabbitmqctl join_cluster rabbit@rabbit2
Clustering node rabbit@rabbit3 with rabbit@rabbit2
The node is already a member of this cluster
查看集群状态
xuej@rabbit1:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit@rabbit1 ...
Basics
Cluster name: rabbit@rabbit1
Disk Nodes
rabbit@rabbit1
rabbit@rabbit2
rabbit@rabbit3
Running Nodes
rabbit@rabbit1
rabbit@rabbit2
rabbit@rabbit3
Versions
rabbit@rabbit1: RabbitMQ 3.10.5 on Erlang 25.0
rabbit@rabbit2: RabbitMQ 3.10.5 on Erlang 25.0
rabbit@rabbit3: RabbitMQ 3.10.5 on Erlang 25.0
Maintenance status
Node: rabbit@rabbit1, status: not under maintenance
Node: rabbit@rabbit2, status: not under maintenance
Node: rabbit@rabbit3, status: not under maintenance
Alarms
(none)
Network Partitions
(none)
Listeners
Node: rabbit@rabbit1, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit1, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Node: rabbit@rabbit2, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit2, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Node: rabbit@rabbit3, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit3, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Feature flags
Flag: classic_mirrored_queue_version, state: enabled
Flag: implicit_default_bindings, state: enabled
Flag: maintenance_mode_status, state: enabled
Flag: quorum_queue, state: enabled
Flag: stream_queue, state: enabled
Flag: user_limits, state: enabled
Flag: virtual_host_metadata, state: enabled
xuej@rabbit2:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit@rabbit2 ...
Basics
Cluster name: rabbit@rabbit2
Disk Nodes
rabbit@rabbit1
rabbit@rabbit2
rabbit@rabbit3
Running Nodes
rabbit@rabbit1
rabbit@rabbit2
rabbit@rabbit3
Versions
rabbit@rabbit1: RabbitMQ 3.10.5 on Erlang 25.0
rabbit@rabbit2: RabbitMQ 3.10.5 on Erlang 25.0
rabbit@rabbit3: RabbitMQ 3.10.5 on Erlang 25.0
Maintenance status
Node: rabbit@rabbit1, status: not under maintenance
Node: rabbit@rabbit2, status: not under maintenance
Node: rabbit@rabbit3, status: not under maintenance
Alarms
(none)
Network Partitions
(none)
Listeners
Node: rabbit@rabbit1, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit1, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Node: rabbit@rabbit2, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit2, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Node: rabbit@rabbit3, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit3, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Feature flags
Flag: classic_mirrored_queue_version, state: enabled
Flag: implicit_default_bindings, state: enabled
Flag: maintenance_mode_status, state: enabled
Flag: quorum_queue, state: enabled
Flag: stream_queue, state: enabled
Flag: user_limits, state: enabled
Flag: virtual_host_metadata, state: enabled
xuej@rabbit3:~$ sudo rabbitmqctl cluster_status
Cluster status of node rabbit@rabbit3 ...
Basics
Cluster name: rabbit@rabbit3
Disk Nodes
rabbit@rabbit1
rabbit@rabbit2
rabbit@rabbit3
Running Nodes
rabbit@rabbit1
rabbit@rabbit2
rabbit@rabbit3
Versions
rabbit@rabbit1: RabbitMQ 3.10.5 on Erlang 25.0
rabbit@rabbit2: RabbitMQ 3.10.5 on Erlang 25.0
rabbit@rabbit3: RabbitMQ 3.10.5 on Erlang 25.0
Maintenance status
Node: rabbit@rabbit1, status: not under maintenance
Node: rabbit@rabbit2, status: not under maintenance
Node: rabbit@rabbit3, status: not under maintenance
Alarms
(none)
Network Partitions
(none)
Listeners
Node: rabbit@rabbit1, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit1, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Node: rabbit@rabbit2, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit2, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Node: rabbit@rabbit3, interface: [::], port: 25672, protocol: clustering, purpose: inter-node and CLI tool communication
Node: rabbit@rabbit3, interface: [::], port: 5672, protocol: amqp, purpose: AMQP 0-9-1 and AMQP 1.0
Feature flags
Flag: classic_mirrored_queue_version, state: enabled
Flag: implicit_default_bindings, state: enabled
Flag: maintenance_mode_status, state: enabled
Flag: quorum_queue, state: enabled
Flag: stream_queue, state: enabled
Flag: user_limits, state: enabled
Flag: virtual_host_metadata, state: enabled
死信问题
参考https://www.rabbitmq.com/dlx.html
脑裂问题
参考https://www.rabbitmq.com/partitions.html
参考https://www.rabbitmq.com/partitions.html#recovering
参考https://www.rabbitmq.com/partitions.html#automatic-handling
参考https://www.rabbitmq.com/partitions.html#options
从脑裂中恢复
- 要从脑裂中恢复，首先选择一个您最信任的分区。该分区将成为系统状态（模式、消息）使用的权限；其他分区上发生的任何更改都将丢失。
- 停止其他分区中的所有节点，然后重新启动它们。当他们重新加入集群时，他们将从受信任的分区恢复状态。
- 最后，您还应该重新启动受信任分区中的所有节点以清除警告。
- 停止整个集群并重新启动它可能更简单；如果是这样，请确保您启动的第一个节点来自受信任的分区。
分区处理策略
RabbitMQ 还提供了三种自动处理网络分区的方法：pause-minority 模式、pause-if-all-down 模式和 autoheal 模式。默认行为称为忽略模式。
- 在 pause-minority 模式下，RabbitMQ 会在看到其他节点宕机后自动暂停确定自己属于少数（即少于或等于节点总数的一半）的集群节点。因此，它从 CAP 定理中选择分区容差而不是可用性。这确保了在发生网络分区的情况下，最多单个分区中的节点将继续运行。少数节点将在分区开始时暂停，并在分区结束时重新开始。此配置可防止脑裂，因此能够自动从网络分区中恢复而不会出现不一致。
- 在 pause-if-all-down 模式下，RabbitMQ 将自动暂停无法到达任何列出的节点的集群节点。换句话说，所有列出的节点都必须关闭，RabbitMQ 才能暂停集群节点。这接近于暂停少数模式，但是，它允许管理员决定首选哪些节点，而不是依赖于上下文。例如，如果集群由机架 A 中的两个节点和机架 B 中的两个节点组成，并且机架之间的链接丢失，则暂停少数模式将暂停所有节点。在 pause-if-all-down 模式下，如果管理员列出了机架 A 中的两个节点，则只有机架 B 中的节点会暂停。请注意，列出的节点可能会在分区的两侧分裂：在这种情况下，没有节点会暂停。这就是为什么有一个额外的忽略/自动修复参数来指示如何从分区中恢复。
- 在 autoheal 模式下，如果一个分区被认为已经发生，RabbitMQ 将自动决定一个获胜的分区，并将重新启动所有不在获胜分区中的节点。与 pause_minority 模式不同，它因此在分区结束时生效，而不是在分区开始时生效。
- 获胜的分区是连接的客户端最多的分区（或者如果这产生平局，则具有最多节点的分区；如果仍然产生平局，则以未指定的方式选择其中一个分区）。
如何选择模式
重要的是要理解允许 RabbitMQ 自动处理网络分区需要权衡取舍。
如介绍中所述，要通过通常不可靠的链接连接 RabbitMQ 集群，首选 Federation 或 Shovel。
话虽如此，以下是一些指导方针，可帮助操作员确定哪种模式可能合适，也可能不合适：
- ignore：当网络可靠性实际上可能最高且节点可用性最重要时使用。例如，所有集群节点可以在同一个机架或同等设备上，连接一个交换机，该交换机也是通往外界的路由。【AP】
- pause_minority：适合在单个区域中跨机架或可用区域进行集群时，一次丢失大多数节点（区域）的概率被认为非常低。如果/当丢失的节点回来时，这种模式会牺牲一些可用性来自动恢复。【CP】
- autoheal：适用于更关注服务连续性而不是节点间数据一致性的情况。【AP】