OpenStack Compute uses RabbitMQ by
default. This section discusses the configuration options that are
relevant when RabbitMQ is used. The
rpc_backend option is not required as long as
RabbitMQ is the default messaging system.
However, if it is included the configuration, it must be set to
nova.rpc.impl_kombu.
rpc_backend=nova.rpc.impl_kombu
The following tables describe the rest of the options that
can be used when RabbitMQ is used
as the messaging system. You can configure the messaging
communication for different installation scenarios as well as
tune RabbitMQ's retries and the size of the RPC thread pool.
If you want to monitor notifications through RabbitMQ, you
must set the notification_driver option in
nova.conf to
nova.notifier.rabbit_notifier. The default
for sending usage data is 60 seconds plus a randomized 0-60 seconds.
| Configuration option | Default | Description |
rabbit_host |
localhost |
IP address; Location of RabbitMQ installation. |
rabbit_password |
guest |
String value; Password for the RabbitMQ server. |
rabbit_port |
5672 |
Integer value; Port where RabbitMQ server is running/listening. |
rabbit_userid |
guest |
String value; User ID used for RabbitMQ connections. |
rabbit_virtual_host |
/ |
Location of a virtual RabbitMQ installation. |
| Configuration option | Default | Description |
--rabbit_max_retries |
0 |
Integer value; maximum retries with trying to connect to RabbitMQ(the default of 0 implies an infinite retry count). |
rabbit_retry_interval |
1 |
Integer value: RabbitMQ connection retry interval. |
rpc_thread_pool_size |
1024 |
Integer value: Size of Remote Procedure Call thread pool. |
