You can configure how many messages the bus can handle, when to
discard messages, and which messaging engines the bus can communicate with.
You can also specify changes that can be made to the bus that do not require
a restart of the messaging engines.
About this task
You configure bus properties after you have created a bus. To
configure the properties of a bus, use the administrative console to complete
the following steps:
Procedure
- Click .
- Specify the following properties for the bus:
- Description
- A service integration bus supports applications using message-based and service-oriented architectures. A bus is a group of interconnected servers and clusters that have been added as members of the bus. Applications connect to a bus at one of the messaging engines associated with its bus members.
- Inter-engine transport chain
- The transport chain used for communication between messaging engines in this bus.
The
transport chain must correspond to one of the transport chains defined in
the Messaging engine inbound transports settings for the server. All
servers automatically have a number of transport chains defined to them, and
it is also possible to create new transport chains.
When you specify
the name of a transport chain, that chain must be defined to all servers hosting
messaging engines in the bus. Otherwise, some messaging engines might not
be able to communicate with their peers in the bus.
When the use of
permitted chains is enforced and a protocol is not specified for intra-bus
communications then InboundSecureMessaging is assumed instead of InboundBasicMessaging.
This can be overridden by setting the protocol attribute in the bus configuration.
If InboundSecureMessaging is not a permitted chain then an error occurs.
- Discard messages
- Whether messages on a deleted message point should be retained at a system exception destination or can be discarded. Select
this option to indicate that after a queue has been deleted, any messages
left in the data store for that queue should be discarded.
- Configuration reload enabled
- Select this option to enable automatic update of configuration information
on all the messaging engines on the bus.
Changes to bus destinations or
mediations are applied when destinations or mediations are added to or removed
from the bus.
Changes to
the modifiable configuration information for any foreign bus
connections are also updated automatically. The time when these changes take
effect varies:
- Foreign Bus Connection properties
- Immediately
- WebSphere® MQ
link properties
- On channel restart, except Description (immediately), and Initial State
(on messaging engine restart)
- MQ sender channel properties
- On channel restart, except Initial State (on messaging engine restart
or sender channel creation)
- MQ receiver channel properties
- On channel restart, except Initial State (on messaging engine restart
or receiver channel creation)
- Publish/subscribe broker profile (0 to n) properties
- Immediately
- Service integration bus link properties
- On link restart, except Description (immediately), and Initial State (on
messaging engine restart or link creation)
To ensure that dynamic
configuration updates are made on an application server, click then select Configuration reload enabled.
To
ensure that dynamic configuration updates are made to each node, click to
display the Console Preferences window then select Synchronize
changes with nodes.
- Default messaging engine high message threshold
- A threshold above which the messaging system will take action to limit the addition of more messages to a message point. When
a messaging engine is created on the bus, the value of this property is used
to set the default high message threshold for the messaging engine.
- Specify topology, destination resources, web services and additional
properties for the bus, as required. To restrict the number of
audit messages, add a custom property called audit.bus.authentication with
one of the following values:
- all (audit all attempts to authenticate to the bus)
- failure (audit only failure to authenticate to the bus)
- none (do not audit any attempts to authenticate to the
bus)
- Click OK.
- Save your changes to the master configuration.