我的rabbitMQ服务一启动就崩溃了。这项服务在过去两年里运行良好，但突然间，它停止了工作。我看着日志，看到了这个：
=INFO REPORT==== 8-Oct-2015::11:40:56 ===
Starting RabbitMQ 3.0.2 on Erlang R16B
=INFO REPORT==== 8-Oct-2015::11:40:56 ===
Limiting to approx 8092 file handles (7280 sockets)
=WARNING REPORT==== 8-Oct-2015::11:40:56 ===
Only 2048MB of 4095MB memory usable due to limited address space.
=INFO REPORT==== 8-Oct-2015::11:40:56 ===
Memory limit set to 819MB of 4095MB total.
=INFO REPORT==== 8-Oct-2015::11:40:56 ===
Disk free limit set to 1000MB
=INFO REPORT==== 8-Oct-2015::11:40:56 ===
msg_store_transient: using rabbit_msg_store_ets_index to provide index
=INFO REPORT==== 8-Oct-2015::11:40:56 ===
msg_store_persistent: using rabbit_msg_store_ets_index to provide index
=INFO REPORT==== 8-Oct-2015::11:40:56 ===
started TCP Listener on [::]:5672
=ERROR REPORT==== 8-Oct-2015::11:40:56 ===
Error in process
所以我决定运行以下commad：
rabbitmqctl set_vm_memory_high_watermark 0.5
会出现以下错误：
Setting memory threshold on rabbit@sn4324324 to 0.5 ...
Error: unable to connect to node rabbit@sn4324324: nodedown
DIAGNOSTICS
===========
nodes in question: [rabbit@sn4324324]
hosts, their running nodes and ports:
- sn4324324: [{rabbitmqctl601389,64542}]
current node details:
- node name: rabbitmqctl601389@sn4324324
- home dir: C:\Users\TestUser
- cookie hash: /GF4XhumN66/5SsNp0a8gQ==
如何设置set_vm_memory_high_watermark的值