7.3. JMX を使用したブローカーランタイムデータの監視

手順

1. 実行中の Pod のリストを取得します。

   $ oc get pods
   
   NAME                 READY     STATUS    RESTARTS   AGE
   ex-aao-ss-1   1/1       Running   0          14d

2. oclogs コマンドを実行します。

   $ oc logs -f ex-aao-ss-1
   
   ...
   Running Broker in /home/jboss/amq-broker
   ...
   2021-09-17 09:35:10,813 INFO  [org.apache.activemq.artemis.integration.bootstrap] AMQ101000: Starting ActiveMQ Artemis Server
   2021-09-17 09:35:10,882 INFO  [org.apache.activemq.artemis.core.server] AMQ221000: live Message Broker is starting with configuration Broker Configuration (clustered=true,journalDirectory=data/journal,bindingsDirectory=data/bindings,largeMessagesDirectory=data/large-messages,pagingDirectory=data/paging)
   2021-09-17 09:35:10,971 INFO  [org.apache.activemq.artemis.core.server] AMQ221013: Using NIO Journal
   2021-09-17 09:35:11,114 INFO  [org.apache.activemq.artemis.core.server] AMQ221057: Global Max Size is being adjusted to 1/2 of the JVM max size (-Xmx). being defined as 2,566,914,048
   2021-09-17 09:35:11,369 WARNING [org.jgroups.stack.Configurator] JGRP000014: BasicTCP.use_send_queues has been deprecated: will be removed in 4.0
   2021-09-17 09:35:11,385 WARNING [org.jgroups.stack.Configurator] JGRP000014: Discovery.timeout has been deprecated: GMS.join_timeout should be used instead
   2021-09-17 09:35:11,480 INFO  [org.jgroups.protocols.openshift.DNS_PING] serviceName [ex-aao-ping-svc] set; clustering enabled
   2021-09-17 09:35:24,540 INFO  [org.openshift.ping.common.Utils] 3 attempt(s) with a 1000ms sleep to execute [GetServicePort] failed. Last failure was [javax.naming.CommunicationException: DNS error]
   ...
   2021-09-17 09:35:25,044 INFO  [org.apache.activemq.artemis.core.server] AMQ221034: Waiting indefinitely to obtain live lock
   2021-09-17 09:35:25,045 INFO  [org.apache.activemq.artemis.core.server] AMQ221035: Live Server Obtained live lock
   2021-09-17 09:35:25,206 INFO  [org.apache.activemq.artemis.core.server] AMQ221080: Deploying address DLQ supporting [ANYCAST]
   2021-09-17 09:35:25,240 INFO  [org.apache.activemq.artemis.core.server] AMQ221003: Deploying ANYCAST queue DLQ on address DLQ
   2021-09-17 09:35:25,360 INFO  [org.apache.activemq.artemis.core.server] AMQ221080: Deploying address ExpiryQueue supporting [ANYCAST]
   2021-09-17 09:35:25,362 INFO  [org.apache.activemq.artemis.core.server] AMQ221003: Deploying ANYCAST queue ExpiryQueue on address ExpiryQueue
   2021-09-17 09:35:25,656 INFO  [org.apache.activemq.artemis.core.server] AMQ221020: Started EPOLL Acceptor at ex-aao-ss-1.ex-aao-hdls-svc.broker.svc.cluster.local:61616 for protocols [CORE]
   2021-09-17 09:35:25,660 INFO  [org.apache.activemq.artemis.core.server] AMQ221007: Server is now live
   2021-09-17 09:35:25,660 INFO  [org.apache.activemq.artemis.core.server] AMQ221001: Apache ActiveMQ Artemis Message Broker version 2.16.0.redhat-00022 [amq-broker, nodeID=8d886031-179a-11ec-9e02-0a580ad9008b]
   2021-09-17 09:35:26,470 INFO  [org.apache.amq.hawtio.branding.PluginContextListener] Initialized amq-broker-redhat-branding plugin
   2021-09-17 09:35:26,656 INFO  [org.apache.activemq.hawtio.plugin.PluginContextListener] Initialized artemis-plugin plugin
   ...

3. クエリーを実行して、ブローカーの Max Consumers を監視します。

   $ curl -k -u admin:admin http://console-broker.amq-demo.apps.example.com/console/jolokia/read/org.apache.activemq.artemis:broker=%22broker%22,component=addresses,address=%22TESTQUEUE%22,subcomponent=queues,routing-type=%22anycast%22,queue=%22TESTQUEUE%22/MaxConsumers
   
   {"request":{"mbean":"org.apache.activemq.artemis:address=\"TESTQUEUE\",broker=\"broker\",component=addresses,queue=\"TESTQUEUE\",routing-type=\"anycast\",subcomponent=queues","attribute":"MaxConsumers","type":"read"},"value":-1,"timestamp":1528297825,"status":200}