Open Stack

Hi,
Let me know for your opinion about this .

Thanks & regards,
Keshava.A

From: A, Keshava
Sent: Friday, May 30, 2014 10:59 AM
To: OpenStack Development Mailing List (not for usage questions)
Cc: A, Keshava
Subject: [openstack-dev] Number of RabbitMQ connection : Some connection without consumers ?

Hi,
It is observed that RabbitMQ "number of connection" will vary and sometime connection without any  consumers.
OpenStack controller connected to 2 compute nodes ( each with a VM) and NN node scenario.


1.       RabbitMQ connection will vary (like 6, 7,  8 connection) w.r.t one    Compute-Node.
For as many number of 'X + N' connection there are   X number of consumer ?


2.       For 2-3  connections there are no  consumers. But the connection continue to exist.


Question:

A.
Is it the behavior it is observed ? Is it because  stale   of connection ?
Or message is getting Time-out ( TTL)  in the Queue  and once its timed out it cannot fetched out and cannot delivered to consumers, because of this connection remain stale ?
Uncleaned Socket connection ?

B. Who creates some of the reply queues  (ex : reply_844c53cf0eb54b5b9abf1e3b4b3a0404)  and which point of time ?
    How to know this ?


Below are the data collected from rabbit-MQ.

Compute Node-1:- (100.10.10.51)
==============

1. On the connection 100.10.10.51:40488 -> 100.10.10.53:5672
   queue :
                q-agent-notifier-network-delete_fanout_19cd5e739c1d49d5bae4b1c24026ae2b
                q-agent-notifier-port-update_fanout_c970ccc903364b14a8b6ff44a8cb9f2f
                q-agent-notifier-security_group-update_fanout_57f9d018da9e4f9b8b7f33259c60692b
                q-agent-notifier-tunnel-update_fanout_5705b3b7de7d46cb9650706332405955

2. On the connection 100.10.10.51:40485 -> 100.10.10.53:5672 (1)

Queue:
compute.sdn-keshava-cn1
compute_fanout_b092ea21d2dc425ca13b376d1731df9f

3. On the connection 100.10.10.51:40484 -> 100.10.10.53:5672 (1)
queue:
There is no consumers .

4.On the Connection 100.10.10.51:40486 -> 100.10.10.53:5672
queue:
reply_844c53cf0eb54b5b9abf1e3b4b3a0404


5.On the connection 100.10.10.51:40487 -> 100.10.10.53:5672
queue:
reply_77584ebd2bc143db922830683df65c89


6.On the Connection 100.10.10.51:40489 -> 100.10.10.53:5672

Queue:
There are  no consumers.


Thanks & regards,
Keshava.A

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20140530/07d72937/attachment.html>