I have been using ActiveMQ 4.1.2 for a couple of years
and have had a number of problems with it. I echo the views
of a recent post on this forum that I prefer reliability of the tool
than performance; I do not even mind losing messages, but
I want to avoid at any cost out of memory errors,
I need to manage ActiveMQ 4.1.1 daemon as an OCF resource
in a Linux HA cluster.
Has someone already written/tested an OCF resource agent for ActiveMQ
(4.1.1)?
In particular: an OCF resource agent needs to implement a monitor status
function for the resource that would identify conclusively if
Env: ActiveMQ 4.1.1, Spring 2.5.4, JDK1.6
I have a number of clients (about 9) connecting to an external broker using
TCP transport. When one of the clients sends a volley of messages, the
activemq connection seems to deadlock - I say *seems* to because I see no
deadlocks
in the full thread
or do you mean you wanna send a message to all of your applications
which then invoke methods on mbeans? Kinda JMS - JMX - your app?
There are some JMX-over-JMS implementations around
Could you please point me to a JMX over JMS implementation?
Regards
/U
I do not find activemq-ra.jar in the 4.1.1 distribution.
This is needed for using Jencks. Can someone send
me a pointer to this artifact?
Regards
/Ur
I am running into the exact same issue that is described in
http://issues.apache.org/activemq/browse/AMQ-734
But per the report, the fix is in 4.1.1 (which is what I am running).
Could someone tell me if perhaps 4.1.1 is similarly affected
despite the fix? Has anyone seen this problem
Env: JDK1.6, Activemq 4.1.1
I have a simple peer to peer setup as follows,
client1 --- extBrokerA = network connector extBrokerB ---
client2
Messages on topics are exchanged between client1 and client 2 fine till
extBrokerA is restarted. When this happens, the activeMQ logs
I had a couple of significant problems with 5.0.0
due to which I chose to downgrade to 4.1.1.
My main problem now is that sporadically,
the messages on topics are not transported
over the networkConnector to the rmeote broker,
even though there are subscribers to the topic
on the remote
I have two peers A.xxx.com and B.xxx.com connected using external brokers
running on each.
A and B each have a number of applications that have transport connections to
the
respective brokers.
[clients] --- tcpConnector --- [ext Broker A] === NetworkConnector ===
extBroker B] --- tcpConn
It appears that U am running into the following
problem:
https://issues.apache.org/activemq/browse/AMQ-1045
Is there any way to increase the pool size while instantiating
AMQ connection factory using Spring?
Regards
/U
-- Original message --
From: [EMAIL
I am using ActiveMQ 4.1.1 with a very simple peer to peer
connection. I find that after a few exchanges, the messages
from A to B stall - the clients of A seem to hang while sending
a message (FWIW, only TextMessages are used):
Peer A:
transportConnectors
transportConnector
I would like to use asyncDispatch to solve this problem.
When I try to create a ConnectionFactory using
the URL (in Spring configuration, if that matters at all):
brokerURL:=tcp://localhost:61616?asyncDispatch=true
I get invalid connection parameter exception.
The brokerURL
I am trying to trace the messages from the transport connector (client to
broker),
over the nework layer (broker to broker) and finally broker to client
(far end transport connector).
I create the connection factory with trace=true for each client. This yields
no traces. Where should I expect to
Env: Jre: 1.6, Activemq 4.1.1:
I am connecting two machines A and B using external brokers as follows:
Machine A:
External broker at 61616
Tcp Network connector to B
Configuration:
transportConnectors
transportConnector name=openwire uri=tcp://localhost:61616
I am connecting two external brokers as follows:
transportConnector name=openwire uri=tcp://localhost:61616 /
networkConnectors
networkConnector name=other-broker
uri=static://(tcp://10.1.1.135:61616)
/
/networkConnectors
Is there a syntactic element in the configuration element to indicate that
a networkConnector is authenticated using the simpleAuthenticationPlugin?
Wording of your email suggests that there is.
Could you pl give me an example of aconfiguration of two brokers that
authenticate each other using
I am using ActiveMQ5.0.0 and am using TCP transport with JRE1.6.
I am using a rudimentary form of authentication using SimpleAuthenticationPlugin
as follows:
broker xmlns=http://activemq.org/config/1.0; brokerName=localhost
dataDirectory=${activemq.base}/data
plugins
I have two entities on either side of a queue. Entity A needs to do a
synchronous are you there? on the queue and receive a response
synchronously from Entity B.
I thought I'd do this:
- Define a Queue Are you there and dispatchAsync = false
- create a session with CLIENT_ACK set
- send
Hi,
I just need to be able to ping a functional component from another
functional component in a distributed application synchronously.
How can this be accomplished using JMS?
It appears its not straightforward?
Thanks,
/U
-- Original message --
From: Mario
Mario,
Thanks for the explanation. If I incorporate the JNDI configuration of amq,
would Tomcat automatically start the broker? I need to create an embedded
broker with network connectors. If I specify xbean configuration in JNDI,
would Tomcat automatically create the broker and issue
Mario,
How do I specify the network connector in the JNDI configuration?
Is there a way to point Tomcat to the xbean configuration for the broker
instead of replicating the configuration element by element? I use the
xbean config file to specify the JMX configuration, ceiling on the memory
Thank you very much!
/U
-- Original message --
From: Mario Siegenthaler [EMAIL PROTECTED]
I just played around with it a little: The easiest syntax is:
Resource
name=jms/ConnectionFactory
auth=Container
I am using activemq 4.1.1 on JDK6 with Tomcat 5.5.x.
I have a couple of webapp contexts in a servlet container that use activemq
broker.
I have been using an external broker but would like to embed the broker in the
servlet container. I have the following questions.
1) Assume I have webapps A
I am connecting two (Tomcat) JDK 1.6 VMs using 4.1.1 external broker
as follows:
VM1 (broker 1) - VM2 (broker
2)
(main: broker 1)
(main: broker 1)
(failover: broker 2)
// On VM1:
bean id=jmsFactory
class=org.apache.activemq.ActiveMQConnectionFactory
property name=brokerURL
valuefailover:(tcp://localhost:61616,tcp://VM2:61616)?initialReconnectDelay=100/value
/property
/bean
bean
Yes, the brokers are networked together - messages from VM1 come into
VM2. The only problem is that not all subscribers ('Postmaster's below)
get all the messages.
And all the messages are received by all the subscribers on VM1.
Could I use Hermes or the logger interceptor to debug this or
is
Hi -
I would like to use the loggingInterceptor to trace the problem of why messages
are getting
delivered. The example on the activemq site describes how to use the plugin with
xbeans configuration.
I use Spring (2.0) configuration of active brokers - is there a simple example
of how to
Hello...
I am using ActiveMQ 4.1.1 with Spring 2.0 and JDK6. I have a network of two
brokers
deployed as follows:
HostA:
transportConnectorURIs = tcp://localhost:61616
networkConnectorURIs = tcp://HostB:61616
Number of JMS Clients = 1
HostB:
I don't understand a basic element of ActiveMQ: how does the
connection factory reference the broker factory bean?
The examples I have seen define a broker factory bean B
and a connection factory F with a depends-on (Spring)
dependency of F on B. Since the connection factory must be obtaining a
Hi -
I am using Spring 2.0 with ActiveMQ 4.1.1 (JDK6, Tomcat 5.5.x). I am
instantiating a broker using
Xbean as follows:
?xml version=1.0 encoding=UTF-8?
beans xmlns=http://activemq.org/config/1.0;
broker brokerName=MyBroker persistent=false useJmx=false
Thanks for the explanation. On a related note, could you pl
explain if I can use a BrokerService or a BrokerFactoryBean
in my Spring configuration without the xbean stuff?
I am running into the Unrecognized xbean element mapping
error due to the reference to http://activemq.org/config/1.0
and
Suchitha,
Thanks for your help. I thought a URL of the form tcp://host... refers to
an external broker, not an embedded one? Am I mistaken?
I need to run the broker within the servlet container VM, not as a
separate process.
Thanks,
/U
-- Original message --
Adrian,
Thanks for the note.
Startup: vm://localhost
During runtime (after an event):
failover(vm://localhost,tcp://remote:61616)
Would modifying the broker URL of the connection factory cause
problems?
Hi -
I am using the embedded broker in a servlet container. Each webapp in the
servlet
container instantiates a connection factory that refers to broker URL of
vm://localhost?broker.persistent=false
as follows:
(Servlet Container
(WebApp1
To follow up on my last mail: I can perhaps avoid the problem by
using distinct brokernames for each webapp; but that would
create distinct embedded brokers perhaps? I need both the webapps
to share the same broker so they receive messages published
by each other.
Regards,
/U
--
Hello...
I have a couple of basic questions on ActiveMQ. I would appreciate any hits as
I am stuck.
I am using ActiveMQ 4.1 with JDK6.
1) When I use an embedded broker with vm transport (vm://localhost)
the instantiation of my Spring SimpleMessageListenerContainer
always fails with a
Environment:
JDK1.6
ActiveMQ 4.1
Linux Kernel 2.6.17-1.2630
Setup:
VM1 on local workstation configured with Peer transport
Topics: 2 published
Number of subscribers: 2
Queues: None
Broker configuration:
bean id=jmsFactory
I would quite appreciate any suggestions on using the
peer transport. Is it the right transport to bridge two
embedded brokers running on distinct servers?
Also, is it possible for me to programmatically alter the
peer broker's address?
Regards
/U
-- Original message
I am using AMQ4.1.
I have two JVM processes running (on different physical servers). I would
like each VM to have an embedded broker and yet connect to the peer VM's
embedded broker.
Finally, I would like subscribers on both the VMs to receive published messages
on the topic regardless of
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