Which port is configured for JMX with the cass-operator?

Question

question

nagasree963_193876 asked Dec 3, '20 nagasree963_193876 commented Jan 28, '21

Which port is configured for JMX with the cass-operator?

How to configure to enable jmx port in cr.yaml (exmple-cassdc-minimal.yaml). I deployed by following the below one:

https://github.com/datastax/cass-operator

I want to enable jmx port for metrics. Which port it is?

cass-operator

10 |1000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 1.0 MiB each and 10.0 MiB total.

DataStax Enterprise is powered by the best distribution of Apache Cassandra ™

Apache, Apache Cassandra, Cassandra, Apache Tomcat, Tomcat, Apache Lucene, Lucene, Apache Solr, Apache Hadoop, Hadoop, Apache Spark, Spark, Apache TinkerPop, TinkerPop, Apache Kafka and Kafka are either registered trademarks or trademarks of the Apache Software Foundation or its subsidiaries in Canada, the United States and/or other countries.

Privacy Policy Terms of Use

Answer 1 · 2020-12-04T21:36:11Z

john.sanda_194109 answered Dec 4, '20 nagasree963_193876 commented Dec 6, '20

Hi @nagasree963_193876

You are correct in that remote JMX is disabled. In K8ssandra we make some changes to the CassandraDatacenter spec to enable it. You can look here to see what we do.

We really leverage the podTemplateSpec property of CassandraDatacenter to make it all work.

I recently wrote this blob post talking briefly about the podTemplateSpec property. I hope to have a follow up post within the next few days that discusses exactly how the podTemplateSpec property is used to enable remote JMX.

Stay tuned and definitely check out http://k8ssandra.io/ :)

1 Share

10 |1000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 1.0 MiB each and 10.0 MiB total.

nagasree963_193876 commented · Dec 06, 2020 at 07:08 AM

Is it possible to enable remote JMX in cassoperator 1.1.0? I am using below config to enable.. But still I can see that JMX is disabled. How to pass config to enable JMX?

```

jvm-options:

# Set the database to use 2 GB of Java heap

initial_heap_size: "800M"

max_heap_size: "800M"

additional-jvm-opts:

# As the database comes up for the first time, set system keyspaces to RF=3

# - "-Dcassandra.system_distributed_replication_dc_names=dc1"

# - "-Dcassandra.system_distributed_replication_per_dc=3"

jmx-remote-ssl-opts:

- "-Dcom.sun.management.jmxremote.authenticate=true"

```

0 ·

Answer 2 · 2020-12-03T22:56:11Z

Erick Ramirez answered Dec 3, '20 nagasree963_193876 commented Jan 28, '21

The cass-operator uses the default JMX port 7199.

As a side note, I wanted to bring K8ssandra to your attention in case you didn't know about it yet. It still uses the cass-operator under the hood but is packaged with the following:

Reaper for automated repairs
Medusa for backups and restores
Metrics Collector for monitoring with Prometheus + Grafana
Traefik templates for k8s cluster ingress

Cheers!

3 Share

10 |1000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 1.0 MiB each and 10.0 MiB total.

nagasree963_193876 commented · Dec 04, 2020 at 05:20 AM

Thanks Erick Ramirez . My doubt was do we need to enable that jmx port or by default, it exposes jmx port 7199

0 ·

nagasree963_193876 nagasree963_193876 commented · Dec 04, 2020 at 04:47 PM

I checked that jmx remote port is set to false. I was trying to pass the below config in cassandra_cr.yaml:

```

jvm-options:

# Set the database to use 2 GB of Java heap

initial_heap_size: "800M"

max_heap_size: "800M"

- "-Dcom.sun.management.jmxremote.authenticate=true"

```

Is that correct config or need to change configurations?

0 ·

nagasree963_193876 commented · Jan 28, 2021 at 06:13 AM

Please confirm one thing, Is it possible to enable jmx metrics in cass-operator :1.1.0 !!

0 ·

question