jolokia | fresh way to access JMX MBeans | HTTP library
kandi X-RAY | jolokia Summary
kandi X-RAY | jolokia Summary
Jolokia is a fresh way to access JMX MBeans remotely. It is different from JSR-160 connectors in that it is an agent-based approach which uses JSON over HTTP for its communication in a REST-stylish way.
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Top functions reviewed by kandi - BETA
- Invoked after all properties have been set
- Create a new HttpsServer
- Get TBS Certificate
- Update the list of protocols and ciphers from the given SSLContext
- Attaches an agent to the running JVM
- Dispatch a command
- Creates a virtual machine handler
- Handles a request
- Create an object name from a path
- Initialize the attribute mode
- Authenticate the given exchange
- Resets the state
- Performs authentication
- Extract the JSON data for a MBean
- Returns the encoded object identifier
- This method initializes the updaters
- Gets attributes
- Get the encoded value
- Disable SSL certificate checking
- Set an attribute value
- Parse the query and return the results as Map
- Set the value of a date
- Authenticate with the delegate URL
- Boot AMX if possible
- Register the given object to the MBeanServer
- Returns the encoded value
jolokia Key Features
jolokia Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copyexec "$JAVACMD" \
$JAVA_ARGS \
-Dhawtio.role="$HAWTIO_ROLE" \
-Xbootclasspath/a:"$LOG_MANAGER:$WILDFLY_COMMON:$ARTEMIS_HOME/lib/javax.json-1.1.jar" \
-Djava.security.auth.login.config="$ARTEMIS_INSTANCE_ETC/login.config" \
- drop_event.when.regexp:
or:
- kubernetes.pod.name: "weave-net.*"
- kubernetes.pod.name: "external-dns.*"
- kubernetes.pod.name: "nginx-ingress-controller.*"
- kubernetes.pod.name: "filebeat.*"
karaf@root()> web:list
ID | State | Web-State | Level | Web-ContextPath | Name
----+-------------+-------------+-------+------------------------+------------------------------
100 | Active | Deployed | 80 | /jD20181472:nlp-adapt-kube gms$ kubectl logs amq-76ccdc4bb-mbkml
INFO: Loading '/opt/activemq/bin/env'
INFO: Using java '/docker-java-home/jre/bin/java'
INFO: Starting in foreground, this is just for debugging purposes (stop process by press java =host=0.0.0.0 -jar
java -javaagent:jolokia-jvm-1.4.0-agent.jar=host=0.0.0.0 -jar C:\Users\HackoMan\Documents\GitHub\target\myjar-1.0-SNAPSHOT.jar
8080
-1
9999
Community Discussions
Trending Discussions on jolokia
QUESTION
I'm building the Spring Boot Admin code and getting the below error.
pom.xml
...ANSWER
Answered 2021-May-04 at 08:45I was able to solve this issue. Basically all your microservices should use below configuration. Here prefer-ip-address: true and fetch-registry: true is the key here.
QUESTION
When I run ActiveMQ Artemis in docker I see this basically empty screen:
That doesn't look right... I was expecting this, like I get when using the zip file:
Regardless of whether I use docker or the zip file, it doesn't matter what username or password I enter, I just get logged in regardless, which is a little concerning...
What am I doing wrong?
Longer VersionI'm attempting a "Hello World" style installation of ActiveMQ. It sounds like ActiveMQ Artemis is what I should be using. We'll be using this on Kubernetes, so I found and have followed https://artemiscloud.io/. There is a Quickly deploy a basic Container image that runs the broker right there on the front page. It suggests:
...ANSWER
Answered 2021-May-28 at 14:35The ArtemisCloud container image for ActiveMQ Artemis is designed to run inside a container so the container IP address should be used to access to the console or to other resources.
The container IP address can be obtained by using the command docker inspect or by reading the container log, ie:
QUESTION
I was faced with a broker's (ActiveMQ-Artemis version 2.17.0) behavior unusual for me.
With a large number of messages and when they are quickly sent by the manufacturer, some of the messages reach the queue after the complete execution and the manufacturer has stopped. This is especially evident when the hard drive is normal, not SSD.
As an example, I use the following Apache Camel 2.25.3 route to send messages
...ANSWER
Answered 2021-Apr-14 at 12:10This kind of behavior is expected when sending non-durable messages because non-durable messages are sent in a non-blocking manner. It's not clear whether or not you're sending non-durable messages, but you've also set blockOnDurableSend=false on your client's URL so even durable messages will be sent non-blocking.
From the broker's perspective the messages haven't actually arrived so there's no way to see the number of messages that have been sent but are not yet in the queue.
If you want to ensure that when the Camel route terminates all messages are written to the queue then you should send durable messages and set blockOnDurableSend=true (which is the default value).
Keep in mind that blocking will reduce performance (potentially substantially) based on the speed of you hard disk. This is because the client will have to wait for a response from the broker for every message it sends, and for every message the broker receives it will have to persist that message to disk and wait for the hard disk to sync before it sends a response back to the client. Therefore, if your hard disk can't sync quickly the client will have to wait a long time relatively speaking.
One of the configuration parameters that influences this behavior is journal-buffer-timeout. This value is calculated automatically and set when the broker instance is first created. You'll see evidence of this logged, e.g.:
QUESTION
I'm trying to set up a local Kibana instance with ActiveMQ for testing purposes. I've created a docker network called elastic-network. I have 3 containers in my network: elasticsearch, kibana and finally activemq. In my kibana container, I downloaded metric beats using the following shell command
...ANSWER
Answered 2021-Mar-17 at 22:13After looking through the documentation, I saw that for Linux, unlike the other OS, you also have to change the configuration in the module directory module.d/activemq.yml, not just the metricbeat.reference.yml
QUESTION
Running on java-11-openjdk-11.0.9.11-2.el8_3.x86_64, WildFly Core 10.1.12.SP1-redhat . I'm trying to use a custom formatter like this:
...ANSWER
Answered 2021-Jan-22 at 23:33You're error is caused by the issue described in WFCORE-4748. This should is fixed in WildFly 21 and should be fixed in JBoss EAP 7.4.
Another thing to note is there is no need to use the KeyCloak formatter like that. There is one built into JBoss EAP 7.3 which it seems you're using.
QUESTION
I downloaded Apache Artemis 2.16.0 from the official site and created an instance with command artemis create --http-host 0.0.0.0 --user default --password --default -- /var/lib/artemis.
I set http-host to 0.0.0.0, to let me access the management console from any address. This lets me access the console, but the configuration is wrong, since it sets the jolokia-access.xml:restrict.cors.allow-origin to *://0.0.0.0*, which means that even though I can technically access the console, I get no data, just a mostly empty screen.
I can, by hand, edit the file attribute to *://*, but I'd prefer having the command do this to me instead. Is it a bug in the instance generator, or am I missing something?
ANSWER
Answered 2021-Jan-13 at 19:40I created this Jira initially, but after additional consideration I've chosen to leave the behavior as-is.
Using 0.0.0.0 for the http-host is convenient in one sense because it allows the embedded HTTP server to listen for connections on every network interface. However, the embedded HTTP server has no knowledge of what actual IP addresses or hostnames will be used by browser clients. Therefore, instead of the broker automatically configuring *://* for CORS and allowing any cross-site access (which is not recommended from a security perspective) it will be up to the user to configure this since only the user knows the real, proper values.
QUESTION
I updated from Spring Boot 2.2.6.RELEASE to 2.3.1.RELEASE and suddenly, all my @ManagedResources beans are missing in the JMX console and even all from Spring Boot itself. However, all jolokia, java.lang, java.nio, org.apache.activemq and org.apache.logging.log4j2 are there.
Interestingly, this only happens when the application is installed on the server. When I run it from IntelliJ, all managed beans are there.
So I'm suspecting some issue in the order in which the beans are loaded but I really have no idea where to start looking. Has anyone experienced something like this?
This is my Application class:
...ANSWER
Answered 2020-Jul-29 at 14:02It turned out that I actually updated from 2.1.2.RELEASE to 2.2.6.RELEASE and then to 2.3.1.RELEASE on the same day and JMX is disabled since 2.2.0.M1 (see also: Spring Boot 2.2 Release Notes.
Therefore, spring.jmx.enabled=true is now required.
QUESTION
I'm trying to run a 6 node Apache Artemis static cluster as 3 live-backup pairs. In order not to lose data during full cluster restart I've also created a mechanism figuring out which of the pair has newer data, and based on that the server automatically decides whether it's safe to start that particular node. During full cluster restart the servers are started simultaneously, and nodes with newer data start before nodes that were lately acting as backups.
This scenario has been working flawlessly with single live-backup pair.
Shutdown:
- Master node is live, slave node is backup
- Master node => slave node goes live
- Slave node
Start:
- Both nodes are dead
- Slave node => goes live
- Master node => goes live, slave node goes backup
However in the 6 node cluster the backup node does not go live at all:
- 3 live nodes, 3 backup nodes; pairs bound together in separate groups (rs1, rs2, rs3)
- Stop rs1 master node => rs1 slave node goes live
- Stop rs1 slave node
- Start rs1 slave node => never goes live
- Must not start rs1 master node because of potential data loss
Any idea what's wrong with my setup?
Master HA configuration (the group name varies):
...ANSWER
Answered 2020-Nov-30 at 21:06When ActiveMQ Artemis uses replication, the live and the backup servers do not share the same data directories, all data synchronization is done over the network.
Upon start-up the backup server will first need to synchronize all existing data from the live server before becoming capable of replacing the live server should it fail. So unlike when using shared storage, a replicating backup will not be a fully operational backup right after start-up, but only after it finishes synchronizing the data with its live server.
Why does a single live-backup pair look working?
The backup node at start-up executes the following steps at SharedNothingBackupActivation:
- Initialize (it looks running)
- Waiting on cluster connection (it is starving here)
- Starting backup manager
So in a scenario with a single live-backup pair the backup node doesn't complete the initialization.
QUESTION
I am getting error on below line
...ANSWER
Answered 2020-Nov-19 at 06:06This error was due to different cxf jar versions being used
This was solved by matching all the cxf versions in the pom.xml. of current project and all the projects being imported.
QUESTION
There is an option in artemis web console to get list of all queues.
...ANSWER
Answered 2020-Jul-07 at 14:39The listQueues method is really for the artemis queue stat command available from the command-line. It takes special input parameters to support paged output and various return parameters.
If you want to get a list of queues from the broker your best option would be the getQueueNames method. You can use something like the following curl command:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install jolokia
You can use jolokia like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the jolokia component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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