Rabbitmq memory leak when enable SSL

[金甲虫]

Rabbitmq version 3.7.17

Erlang version 22.0.7

SSL enabled

The total memory of VM is 64G

We use a rabbitmq cluster, the memory usage increases over time. We don't have any messages in memory, but the memory is still high and reaches high watermark.

We have thousands of queues and connections.

I use erlang shell attach to rabbitmq node. I find ets uses 20gb of memory.

This table use most of the memory.

 id              name              type  size   mem      owner
 ----------------------------------------------------------------------------

 #Ref<0.1379214371.3766353922.247801> server_ssl_otp_session_cache ordered_set 66504882 2460680784 ssl_manager

It seems like erlang ssl memory leak.

How can I avoid this?

[pengyh]

the version you were using is too old to get supports.
please upgrade them asap.

regards.

[金甲虫]

Upgrade is Time-consuming  for our service now, we hope to fix it quickly. Could your team help to find a workaround? RabbitMQ is our core  system, very important.

[Michal Kuratczyk]

Hi,

If RabbitMQ is an important part of your system, don't run a 3-year old unsupported version of it...

Lots of things have changed since then. We are not publishing even 3.8 patch releases anymore.

As you suggested, this is likely not even a RabbitMQ issue - SSL is implemented by Erlang/OpenSSL. But you are running an unsupported Erlang version as well...

I cannot suggest anything else other than proper software maintenance hygiene.

Best,

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Michał

RabbitMQ team