# Pastebin KYjd5FUo
HI all,
I have done the Upgrade from Rocky to Stein 
We have some problem with rabbitmq commutation with nova, neutron...

in log: 
[error] <0.27430.16> Channel error on connection <0.27421.16> (10.23.8.16:50960 -> 10.23.8.12:5672, vhost: '/', user: 'openstack'), channel 1:
operation queue.declare caused a channel exception not_found: failed to perform operation on queue 'versioned_notifications.info' in vhost '/' due to timeout
 [error] emulator Discarding message {'$gen_cast',{deliver,{delivery,false,true,<7355.8136.6106>,{basic_message,{resource,<<"/">>,exchange,<<"q-agent-notifier-l2population-update_fanout">>},
[<<>>],{content,60,{'P_basic',<<"application/json">>,<<"utf-8">>,[],2,0,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined,undefined},
in an old incarnation (1) of this node (3)

Device 0014d18f-82e2-4d62-89b8-42f084a12d6a not defined on plugin or binding failed: MessagingTimeout: Timed out waiting for a reply to message ID
Create failed (client error): There was a conflict when trying to complete your request
exception thrown: Migration pre-check error: Binding failed for port 7da87f16-c3bf-4cb9-bacd-107540bcc85c, please check neutron logs for more information
Exception during message handling: UnexpectedTaskStateError_Remote: Conflict updating instance fd051412-582c-4654-8b5e-07a0e2f8466e. 
Expected: {'task_state': [u'resize_prep']}. Actual: {'task_state': None}


The difference between Rocky and Stein I saw is :

diff --git a/ansible/group_vars/all.yml b/ansible/group_vars/all.yml
index 48a6bd82a..8a438ce03 100644
--- a/ansible/group_vars/all.yml
+++ b/ansible/group_vars/all.yml
@@ -136,8 +136,9 @@ om_rpc_user: "{{ rabbitmq_user }}"
 om_rpc_password: "{{ rabbitmq_password }}"
 om_rpc_port: "{{ rabbitmq_port }}"
 om_rpc_group: "rabbitmq"
+om_rpc_vhost: "/"

-rpc_transport_url: "{{ om_rpc_transport }}://{% for host in groups[om_rpc_group] %}{{ om_rpc_user }}:{{ om_rpc_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ om_rpc_port }}{% if not loop.last %},{% endif %}{% endfor %}"
+rpc_transport_url: "{{ om_rpc_transport }}://{% for host in groups[om_rpc_group] %}{{ om_rpc_user }}:{{ om_rpc_password }}@{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ om_rpc_port }}{% if not loop.last %},{% endif %}{% endfor %}/{{ om_rpc_vhost }}"



Do I making something wrong by the Upgrade from Rocky to Stein ?
Or do you have the same Problem ?

Cheers PrinzElvis