Sending Data from Hono to Ditto ( amqp:resource-limit-exceeded)

Question

Hono and Ditto are successfully connected. But when I try to send the data from Hono, I will be getting 503 - Service not available message.

But then when I checked the Ditto logs. I got the below AMQP Limit exceeded.

connectivity_1   | 2019-10-14 16:34:38,294 INFO  [] o.e.d.s.c.m.ConnectionActor akka://ditto- 
cluster/system/sharding/connection/6/hono-sandbox-connection-123/pa - Starting ClientActor for 
connection <hono-sandbox-connection-123> with <1> clients.
connectivity_1   | 2019-10-14 16:34:38,308 INFO  [] a.a.RepointableActorRef akka://ditto- 
cluster/system/distributedPubSubMediator - Message 
[org.eclipse.ditto.signals.events.connectivity.ConnectionCreated] from Actor[akka://ditto- 
cluster/system/sharding/connection/6/hono-sandbox-connection-123/pa#233633004] to Actor[akka://ditto- 
cluster/system/distributedPubSubMediator#-301178072] was not delivered. [9] dead letters encountered. 
If this is not an expected behavior, then [Actor[akka://ditto- 
cluster/system/distributedPubSubMediator#-301178072]] may have terminated unexpectedly, This logging 
can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead- 
letters-during-shutdown'.
connectivity_1   | 2019-10-14 16:34:38,441 INFO  [] o.a.q.j.s.SaslMechanismFinder  - Best match for 
SASL auth was: SASL-PLAIN
connectivity_1   | 2019-10-14 16:34:38,721 INFO  [] o.a.q.j.s.SaslMechanismFinder  - Best match for 
SASL auth was: SASL-PLAIN
connectivity_1   | 2019-10-14 16:34:39,128 INFO  [] o.a.q.j.s.SaslMechanismFinder  - Best match for 
SASL auth was: SASL-PLAIN
connectivity_1   | 2019-10-14 16:34:39,781 INFO  [] o.a.q.j.s.SaslMechanismFinder  - Best match for 
SASL auth was: SASL-PLAIN
connectivity_1   | 2019-10-14 16:34:40,962 INFO  [] o.a.q.j.s.SaslMechanismFinder  - Best match for 
SASL auth was: SASL-PLAIN
connectivity_1   | 2019-10-14 16:34:41,020 WARN  [] o.e.d.s.c.m.a.JMSConnectionHandlingActor 
akka://ditto-cluster/system/sharding/connection/6/hono-sandbox-connection- 
123/pa/$a/c1/jmsConnectionHandling-hono-sandbox-connection-123-connect1 - Failed to connect JMS 
client:connection disallowed by local policy [condition = amqp:resource-limit-exceeded]

I am not sure what does AMQP:Resource limit exceeded error mean? Is this preventing me to send from Hono to Ditto?

Will it work if I drop all these below dbs in the Ditto Mongo server and create new things and Connections again?.

> show dbs
admin         0.000GB
concierge     0.000GB
config        0.000GB
connectivity  0.000GB
local         0.000GB
policies      0.002GB
searchDB      0.001GB
things        0.337GB

Edit :I tried to connect Eclipse Hono and Eclipse Ditto again in the same servers where I am getting errors.

I got status 201 (connection created) message when I executed the curl commnad. But when I checked my log at the same time, I got the following message.

connectivity_1_ad306c4c315b | 2019-10-15T15:46:36.233449988Z 2019-10-15 17:46:36,233 WARN  [] o.e.d.s.c.m.ConnectionActor akka://ditto-cluster/system/sharding/connection/12/test_co_nn_id_12/pa - Operation <connect> on connection <test_co_nn_id_12> failed due to ConnectionFailedException: Failed to connect JMS client:connection disallowed by local policy [condition = amqp:resource-limit-exceeded].

Note : It is working completely fine when I am trying this in my local machine or in different server.

Answer 1

I removed the stack and cleared the MongoDB completely using

docker-compose down

Then reinstalled Ditto. Made Hono and Ditto connections and tried to send data as earlier. Everything worked as expected.