[rabbitmq-discuss] RabbitMQ crashed

[Michael Klishin]

On 25 Oct 2013, at 01:29, Kapil Goyal <goyalk at vmware.com> wrote:

>> Is this the only error message in the logs?
> There are many errors like this before the crash:
> =ERROR REPORT==== 21-Oct-2013::20:01:09 ===
> webmachine error: path="/api/connections"
> “Unauthorized"

This is a warning from HTTP API. Something tries to access /api/connections
without having permissions to do so. So, it’s a red herring.

> 
>> I don't think it took down the entire node, I expect the queue crashed. 
>> Still unacceptable though.
> Error message says "Generic server <0.764.0> terminating". Does this not
> indicate that node crashed?

Server here means gen_server, an Erlang process behavior (think of it as a class
named *Server, if it helps). It should not bring down the node.

> 
>> Kapil, this will be fixed in the next release.
> This is good news. But, our product is already shipped with RabbitMQ 3.1.5
> and upgrade won't be easy. Nonetheless, is this totally a server issue,
> being hit because of high load, or can we do anything at the client end to
> avoid it?

This is a server issue. From time to time one process does not respond to another
process in < 5 seconds and the caller crashes without a timeout. Presumably this
is because of short hardware resources.

There is no client-side work around I’m afraid.

MK

Software Engineer, Pivotal/RabbitMQ