AxonOps Agent Installation

The AxonOps Agent enables collection of:

• Metrics
• Logs
• Events

The AxonOps Agent also enables the following maintenance operations to be performed on the cluster:

• Adaptive repairs
• Backups

See Installing AxonOps agent for Cassandra in Docker if you are running Cassandra under Docker, and the Kubernetes guide if you are setting up Strimzi or K8ssandra clusters.

Version Compatibility

AxonOps Agent is available for the following versions of Apache Cassandra and Apache Kafka:

Cassandra

• Apache Cassandra 3.0.x
• Apache Cassandra 3.11.x
• Apache Cassandra 4.0.x
• Apache Cassandra 4.1.x
• Apache Cassandra 5.0.x

Kafka

• Apache Kafka 2.x
• Apache Kafka 3.x

Set up the package repository

Select the OS Family

Execute the following commands to setup the AxonOps repository:

sudo apt-get update
sudo apt-get install -y curl gnupg ca-certificates

curl -L https://packages.axonops.com/apt/repo-signing-key.gpg \
  | sudo gpg --dearmor -o /usr/share/keyrings/axonops.gpg

echo "deb [arch=arm64,amd64 signed-by=/usr/share/keyrings/axonops.gpg]\
  https://packages.axonops.com/apt axonops-apt main" \
  | sudo tee /etc/apt/sources.list.d/axonops-apt.list
sudo apt-get update

sudo tee /etc/yum.repos.d/axonops-yum.repo << EOL
[axonops-yum]
name=axonops-yum
baseurl=https://packages.axonops.com/yum/
enabled=1
repo_gpgcheck=0
gpgcheck=0
EOL

Select Service to Configure

Install Cassandra Agent

Select the Cassandra Version

Select the Java Version

Install the AxonOps Cassandra Agent and its dependency AxonOps agent:

sudo apt-get install axon-cassandra3.0-agent

sudo apt-get install axon-cassandra3.11-agent

sudo apt-get install axon-cassandra4.0-agent-jdk8

sudo apt-get install axon-cassandra4.0-agent

sudo apt-get install axon-cassandra4.1-agent-jdk8

sudo apt-get install axon-cassandra4.1-agent

sudo apt-get install axon-cassandra5.0-agent-jdk11

sudo apt-get install axon-cassandra5.0-agent-jdk17

sudo yum install axon-cassandra3.0-agent

sudo yum install axon-cassandra3.11-agent

sudo yum install axon-cassandra4.0-agent-jdk8

sudo yum install axon-cassandra4.0-agent

sudo yum install axon-cassandra4.1-agent-jdk8

sudo yum install axon-cassandra4.1-agent

sudo yum install axon-cassandra5.0-agent-jdk11

sudo yum install axon-cassandra5.0-agent-jdk17

Configuration File Locations

AxonOps Cassandra Agent

The AxonOps Cassandra Agent is the jar that is directly loaded by Cassandra. The AxonOps Cassandra Agent then reaches out directly to the AxonOps Agent binary which contacts the AxonOps Server directly.

• Configuration File: /etc/axonops/axon-agent.yml
• Binary: /usr/share/axonops/axon-cassandra{version}-agent.jar
• Version number: /usr/share/axonops/axon-cassandra{version}-agent.version
• Copyright: /usr/share/doc/axonops/axon-cassandra{version}-agent/copyright
• Licenses: /usr/share/axonops/licenses/axon-cassandra{version}-agent/

AxonOps Agent

The AxonOps Agent is a dependency of the AxonOps Cassandra Agent. This binary contacts the AxonOps Server directly while minimizing the memory footprint and CPU utilization of the Cassandra process.

• Configuration File: /etc/axonops/axon-agent.yml
• Binary: usr/share/axonops/AxonOps agent
• Logs: /var/log/axonops/AxonOps agent.log
• Systemd service: /usr/lib/systemd/system/AxonOps agent.service

Agent Configuration

Update the following lines within /etc/axonops/axon-agent.yml.

The highlighted lines should match the host and org keys found within /etc/axonops/axon-server.yml.

axon-server:
    hosts: "axon-server_endpoint" # Your axon-server IP or hostname, e.g. axonops.mycompany.com
    port: 1888 # The default axon-server port is 1888

AxonOps agent:
    org: "my-company" # Your organisation name
    # SSL/TLS Settings from AxonOps Agent to AxonOps Server
    tls:
        mode: "disabled" # disabled, TLS
        # Only set below if mode is TLS
        skipVerify: false # Disables CA and Hostname verification
        caFile: "path_to_certs_on_axon_agent_node.crt" # required if skipVerify is not set and you are using a self-signed cert
        certFile: "path_to_certs_on_axon_agent_node.crt"
        keyFile: "path_to_key_file_on_axon_agent_node.key"

NTP:
    host: "ntp.mycompany.com" # Your NTP server IP address or hostname 

Ensure Proper Agent Configuration Permissions

After editing the file, ensure the file permissions for /etc/axonops/axon-agent.yml are set correctly by running the following commmand:

sudo chmod 0640 /etc/axonops/axon-agent.yml

Configure Cassandra

Add the following line at the end of /etc/cassandra/cassandra-env.sh:

JVM_OPTS="$JVM_OPTS -javaagent:/usr/share/axonops/axon-cassandra3.0-agent.jar=/etc/axonops/axon-agent.yml"

JVM_OPTS="$JVM_OPTS -javaagent:/usr/share/axonops/axon-cassandra3.11-agent.jar=/etc/axonops/axon-agent.yml"

JVM_OPTS="$JVM_OPTS -javaagent:/usr/share/axonops/axon-cassandra4.0-agent.jar=/etc/axonops/axon-agent.yml"

JVM_OPTS="$JVM_OPTS -javaagent:/usr/share/axonops/axon-cassandra4.1-agent.jar=/etc/axonops/axon-agent.yml"

. /usr/share/axonops/axonops-jvm.options

If Cassandra was installed using a tarball, the correct path for the cassandra-env.sh will be <Cassandra Installation Directory>/conf/cassandra-env.sh.

NB. Make sure this configuration is not overridden by automation tools.

Configure Cassandra user group

Configure the Linux user groups by:

• Adding the axonops user to the cassandra user group.
• Adding the cassandra user to the axonops user group.

CASSANDRA_GROUP=cassandra
CASSANDRA_USER=cassandra

sudo usermod -aG "$CASSANDRA_GROUP" axonops
sudo usermod -aG axonops "$CASSANDRA_USER"

If Cassandra was setup to use a non-default user or group, CASSANDRA_GROUP and/or CASSANDRA_USER will need be updated accordingly for the above commands to work properly.

Uninstall needrestart Package

Due to recent change with needrestart, as seen in Ubuntu 24.04, uninstalling the needrestart package is currently recommended.

Failure to uninstall the needrestart package may cause the Cassandra service to be restarted when updating the AxonOps agent package.

Apply Changes to Cassandra

To load the AxonOps Java Agent and Cassandra config changes, run the following command:

sudo systemctl restart cassandra

Install Kafka Agent

Select the Kafka Version

Select the Java Version.

Install the AxonOps Kafka Agent and its dependency AxonOps agent:

sudo apt-get install axon-kafka2-agent

sudo apt-get install axon-kafka3-agent

sudo apt-get install axon-kafka2-agent

sudo apt-get install axon-kafka3-agent

sudo yum install axon-kafka2-agent

sudo yum install axon-kafka3-agent

sudo yum install axon-kafka2-agent

sudo yum install axon-kafka3-agent

Configuration File Locations

AxonOps Kafka Agent

The AxonOps Kafka Agent is the jar that is directly loaded by Kafka. The AxonOps Kafka Agent then reaches out directly to the AxonOps Agent binary which contacts the AxonOps Server directly.

• Configuration File: /etc/axonops/axon-agent.yml
• Binary: /usr/share/axonops/axon-kafka{version}-agent.jar
• Version number: /usr/share/axonops/axon-kafka{version}-agent.version
• Copyright: /usr/share/doc/axonops/axon-kafka{version}-agent/copyright
• Licenses: /usr/share/axonops/licenses/axon-kafka{version}-agent/

AxonOps Agent

The AxonOps Agent is a dependency of the AxonOps Kafka Agent. This binary contacts the AxonOps Server directly while minimizing the memory footprint and CPU utilization of the Kafka process.

• Configuration File: /etc/axonops/axon-agent.yml
• Binary: usr/share/axonops/AxonOps agent
• Logs: /var/log/axonops/AxonOps agent.log
• Systemd service: /usr/lib/systemd/system/AxonOps agent.service

Agent Configuration

Update the highlighted lines in /etc/axonops/axon-agent.yml.

These need to match the config that you have in your axon-server.yml setup.

Kafka Broker Zookeeper KRaft Broker KRaft Controller Kafka Connect

axon-server:
  hosts: "agents.axonops.cloud" # AxonOps SaaS
  # hosts: "${AXONOPS_SERVER_HOSTS}" # AxonOps Server On-Premise Endpoint
  # port: 1888 # AxonOps Server On-Premise Port (Default is 1888)

AxonOps agent:
  key: "<THIS_IS_A_DUMMY_KEY_PLEASE_UPDATE>"
  org: "<THIS_IS_A_DUMMY_ORG_NAME_PLEASE_UPDATE>"
  cluster_name: "<THIS_IS_A_DUMMY_CLUSTER_NAME_PLEASE_UPDATE>"
  tls:
    mode: "TLS" # disabled, TLS
    #skipVerify: false # Disables CA and Hostname verification
    #caFile: "path_to_certs_on_axon_agent_node.crt" # required if skipVerify is not set and you are using a self-signed cert
    #certFile: "path_to_certs_on_axon_agent_node.crt"
    #keyFile: "path_to_key_file_on_axon_agent_node.key"
# Specify the NTP server IP addresses or hostnames configured for your hosts
# The port defaults to 123 if not specified.
# NTP:
#    hosts:
#        - "x.x.x.x:123"
# Optionally restrict which commands can be executed by AxonOps agent.
# If "true", only scripts placed in scripts_location can be executed by AxonOps agent.
# disable_command_exec: false
# If disable_command_exec is true then AxonOps agent is only allowed to execute scripts
# under this path
# scripts_location: /var/lib/axonops/scripts/

kafka:
  node_type: "broker" # broker, kraft-broker, kraft-controller, zookeeper, connect
  # rack: "testrack" # Auto-detected from Kafka config, optionally override the rack to group nodes in AxonOps
  kafka_client:
    brokers: ["<host_listener_ip_address_or_fqdn>:<port>>"] # 10.0.0.2:9092 or 10.20.30.40:9094 or this_is_my_server.domain.com:9093
    # Authentication Settings
    sasl:
      username: <THIS_IS_A_DUMMY_USERNAME_PLEASE_UPDATE>
      password: <THIS_IS_A_DUMMY_PASSWORD_PLEASE_UPDATE>
      mechanism: PLAIN # SCRAM-SHA-256, SCRAM-SHA-512, OAUTHBEARER, GSSAPI
      # For oauth support
      # oauth:
      #   token:
      #   clientId:
      #   clientSecret:
      #   tokenEndpoint:
      #   scope:
      # For gssapi support
      # gssapi:
      #   authType:
      #   keyTabPath:
      #   kerberosConfigPath:
      #   serviceName:
      #   username:
      #   password:
      #   realm:
      #   enableFast: true
    # SSL settings for connection to Kafka
    tls:
      enabled: true
      caFilepath: <THIS_IS_A_DUMMY_CA_PATH_PLEASE_UPDATE>
      insecureSkipTlsVerify: false

axon-server:
  hosts: "agents.axonops.cloud" # AxonOps SaaS
  # hosts: "${AXONOPS_SERVER_HOSTS}" # AxonOps Server On-Premise Endpoint
  # port: 1888 # AxonOps Server On-Premise Port (Default is 1888)

AxonOps agent:
  key: "<THIS_IS_A_DUMMY_KEY_PLEASE_UPDATE>"
  org: "<THIS_IS_A_DUMMY_ORG_NAME_PLEASE_UPDATE>"
  cluster_name: "<THIS_IS_A_DUMMY_CLUSTER_NAME_PLEASE_UPDATE>"
  tls:
    mode: "TLS" # disabled, TLS
    #skipVerify: false # Disables CA and Hostname verification
    #caFile: "path_to_certs_on_axon_agent_node.crt" # required if skipVerify is not set and you are using a self-signed cert
    #certFile: "path_to_certs_on_axon_agent_node.crt"
    #keyFile: "path_to_key_file_on_axon_agent_node.key"

# Specify the NTP server IP addresses or hostnames configured for your hosts
# The port defaults to 123 if not specified.
# NTP:
#    hosts:
#        - "x.x.x.x:123"
# Optionally restrict which commands can be executed by AxonOps agent.
# If "true", only scripts placed in scripts_location can be executed by AxonOps agent.
# disable_command_exec: false
# If disable_command_exec is true then AxonOps agent is only allowed to execute scripts
# under this path
# scripts_location: /var/lib/axonops/scripts/

kafka:
  node_type: "zookeeper" # broker, kraft-broker, kraft-controller, zookeeper, connect
  # rack: "testrack" # Optionally specify a rack to group nodes in AxonOps

axon-server:
  hosts: "agents.axonops.cloud" # AxonOps SaaS
  # hosts: "${AXONOPS_SERVER_HOSTS}" # AxonOps Server On-Premise Endpoint
  # port: 1888 # AxonOps Server On-Premise Port (Default is 1888)

AxonOps agent:
  key: "<THIS_IS_A_DUMMY_KEY_PLEASE_UPDATE>"
  org: "<THIS_IS_A_DUMMY_ORG_NAME_PLEASE_UPDATE>"
  cluster_name: "<THIS_IS_A_DUMMY_CLUSTER_NAME_PLEASE_UPDATE>"
  tls:
    mode: "TLS" # disabled, TLS
    #skipVerify: false # Disables CA and Hostname verification
    #caFile: "path_to_certs_on_axon_agent_node.crt" # required if skipVerify is not set and you are using a self-signed cert
    #certFile: "path_to_certs_on_axon_agent_node.crt"
    #keyFile: "path_to_key_file_on_axon_agent_node.key"

# Specify the NTP server IP addresses or hostnames configured for your hosts
# The port defaults to 123 if not specified.
# NTP:
#    hosts:
#        - "x.x.x.x:123"
# Optionally restrict which commands can be executed by AxonOps agent.
# If "true", only scripts placed in scripts_location can be executed by AxonOps agent.
# disable_command_exec: false
# If disable_command_exec is true then AxonOps agent is only allowed to execute scripts
# under this path
# scripts_location: /var/lib/axonops/scripts/

kafka:
  node_type: "kraft-broker" # broker, kraft-broker, kraft-controller, zookeeper, connect
  # rack: "testrack" # Auto-detected from Kafka config, optionally override the rack to group nodes in AxonOps
  kafka_client:
    brokers: ["<host_listener_ip_address_or_fqdn>:<port>>"] # 10.0.0.2:9092 or 10.20.30.40:9094 or this_is_my_server.domain.com:9093
    # Authentication Settings
    sasl:
      username: <THIS_IS_A_DUMMY_USERNAME_PLEASE_UPDATE>
      password: <THIS_IS_A_DUMMY_PASSWORD_PLEASE_UPDATE>
      mechanism: PLAIN # SCRAM-SHA-256, SCRAM-SHA-512, OAUTHBEARER, GSSAPI
      # For oauth support
      # oauth:
      #   token:
      #   clientId:
      #   clientSecret:
      #   tokenEndpoint:
      #   scope:
      # For gssapi support
      # gssapi:
      #   authType:
      #   keyTabPath:
      #   kerberosConfigPath:
      #   serviceName:
      #   username:
      #   password:
      #   realm:
      #   enableFast: true
    # SSL settings for connection to Kafka
    tls:
      enabled: true
      caFilepath: <THIS_IS_A_DUMMY_CA_PATH_PLEASE_UPDATE>
      insecureSkipTlsVerify: false

axon-server:
  hosts: "agents.axonops.cloud" # AxonOps SaaS
  # hosts: "${AXONOPS_SERVER_HOSTS}" # AxonOps Server On-Premise Endpoint
  # port: 1888 # AxonOps Server On-Premise Port (Default is 1888)

AxonOps agent:
  key: "<THIS_IS_A_DUMMY_KEY_PLEASE_UPDATE>"
  org: "<THIS_IS_A_DUMMY_ORG_NAME_PLEASE_UPDATE>"
  cluster_name: "<THIS_IS_A_DUMMY_CLUSTER_NAME_PLEASE_UPDATE>"
  tls:
    mode: "TLS" # disabled, TLS
    #skipVerify: false # Disables CA and Hostname verification
    #caFile: "path_to_certs_on_axon_agent_node.crt" # required if skipVerify is not set and you are using a self-signed cert
    #certFile: "path_to_certs_on_axon_agent_node.crt"
    #keyFile: "path_to_key_file_on_axon_agent_node.key"

# Specify the NTP server IP addresses or hostnames configured for your hosts
# The port defaults to 123 if not specified.
# NTP:
#    hosts:
#        - "x.x.x.x:123"
# Optionally restrict which commands can be executed by AxonOps agent.
# If "true", only scripts placed in scripts_location can be executed by AxonOps agent.
# disable_command_exec: false
# If disable_command_exec is true then AxonOps agent is only allowed to execute scripts
# under this path
# scripts_location: /var/lib/axonops/scripts/

kafka:
  node_type: "kraft-controller" # broker, kraft-broker, kraft-controller, zookeeper, connect
  # rack: "testrack" # Auto-detected from Kafka config, optionally override the rack to group nodes in AxonOps
  kafka_client:
    brokers: ["<host_listener_ip_address_or_fqdn>:<port>>"] # 10.0.0.2:9092 or 10.20.30.40:9094 or this_is_my_server.domain.com:9093
    # Authentication Settings
    sasl:
      username: <THIS_IS_A_DUMMY_USERNAME_PLEASE_UPDATE>
      password: <THIS_IS_A_DUMMY_PASSWORD_PLEASE_UPDATE>
      mechanism: PLAIN # SCRAM-SHA-256, SCRAM-SHA-512, OAUTHBEARER, GSSAPI
      # For oauth support
      # oauth:
      #   token:
      #   clientId:
      #   clientSecret:
      #   tokenEndpoint:
      #   scope:
      # For gssapi support
      # gssapi:
      #   authType:
      #   keyTabPath:
      #   kerberosConfigPath:
      #   serviceName:
      #   username:
      #   password:
      #   realm:
      #   enableFast: true
    # SSL settings for connection to Kafka
    tls:
      enabled: true
      caFilepath: <THIS_IS_A_DUMMY_CA_PATH_PLEASE_UPDATE>
      insecureSkipTlsVerify: false

axon-server:
  hosts: "agents.axonops.cloud" # AxonOps SaaS
  # hosts: "${AXONOPS_SERVER_HOSTS}" # AxonOps Server On-Premise Endpoint
  # port: 1888 # AxonOps Server On-Premise Port (Default is 1888)

AxonOps agent:
  key: "<THIS_IS_A_DUMMY_KEY_PLEASE_UPDATE>"
  org: "<THIS_IS_A_DUMMY_ORG_NAME_PLEASE_UPDATE>"
  cluster_name: "<THIS_IS_A_DUMMY_CLUSTER_NAME_PLEASE_UPDATE>"
  tls:
    mode: "TLS" # disabled, TLS
    #skipVerify: false # Disables CA and Hostname verification
    #caFile: "path_to_certs_on_axon_agent_node.crt" # required if skipVerify is not set and you are using a self-signed cert
    #certFile: "path_to_certs_on_axon_agent_node.crt"
    #keyFile: "path_to_key_file_on_axon_agent_node.key"

# Specify the NTP server IP addresses or hostnames configured for your hosts
# The port defaults to 123 if not specified.
# NTP:
#    hosts:
#        - "x.x.x.x:123"
# Optionally restrict which commands can be executed by AxonOps agent.
# If "true", only scripts placed in scripts_location can be executed by AxonOps agent.
# disable_command_exec: false
# If disable_command_exec is true then AxonOps agent is only allowed to execute scripts
# under this path
# scripts_location: /var/lib/axonops/scripts/

kafka:
  node_type: "connect" # broker, kraft-broker, kraft-controller, zookeeper, connect
  # rack: "testrack" # Optionally specify a rack to group nodes in AxonOps

Set file permissions on /etc/axonops/axon-agent.yml file by executing the following command

sudo chmod 0640 /etc/axonops/axon-agent.yml

Configure Kafka

Edit kafka-server-start.sh, usually located in your Kafka install path such as:

<Kafka_Home>/bin/kafka-server-start.sh

Configure Zookeeper

Edit zookeeper-server-start.sh, usually located in your Zookeeper install path such as:

<Zookeeper_Home>/bin/zookeeper-server-start.sh

Configure KRaft Broker

Edit kafka-server-start.sh, usually located in your Kafka install path such as:

<Kafka_Home>/bin/kafka-server-start.sh

Configure KRaft Controller

Edit kafka-server-start.sh, usually located in your Kafka install path such as:

<Kafka_Home>/bin/kafka-server-start.sh

Configure Connect

Edit connect-distributed.sh, usually located in your Kafka install path such as:

<Kafka_Home>/bin/connect-distributed.sh

Insert the following code block into the above file, right before the final line which contains the exec statement:

# Please note the period(.) at the beginning of the config line.
. /usr/share/axonops/axonops-jvm.options

The final state of the last lines of the file should look like this:

. /usr/share/axonops/axonops-jvm.options

exec $base_dir/kafka-run-class.sh $EXTRA_ARGS kafka.Kafka "$@"

. /usr/share/axonops/axonops-jvm.options

exec $base_dir/kafka-run-class.sh $EXTRA_ARGS org.apache.zookeeper.server.quorum.QuorumPeerMain "$@"

. /usr/share/axonops/axonops-jvm.options

exec $base_dir/kafka-run-class.sh $EXTRA_ARGS kafka.Kafka "$@"

. /usr/share/axonops/axonops-jvm.options

exec $base_dir/kafka-run-class.sh $EXTRA_ARGS kafka.Kafka "$@"

. /usr/share/axonops/axonops-jvm.options

exec $(dirname $0)/kafka-run-class.sh $EXTRA_ARGS org.apache.kafka.connect.cli.ConnectDistributed "$@"

. /usr/share/axonops/axonops-jvm.options

exec $base_dir/kafka-run-class.sh $EXTRA_ARGS kafka.Kafka "$@"

. /usr/share/axonops/axonops-jvm.options

exec $base_dir/kafka-run-class.sh $EXTRA_ARGS org.apache.zookeeper.server.quorum.QuorumPeerMain "$@"

. /usr/share/axonops/axonops-jvm.options

exec $base_dir/kafka-run-class.sh $EXTRA_ARGS kafka.Kafka "$@"

. /usr/share/axonops/axonops-jvm.options

exec $base_dir/kafka-run-class.sh $EXTRA_ARGS kafka.Kafka "$@"

. /usr/share/axonops/axonops-jvm.options

exec $(dirname $0)/kafka-run-class.sh $EXTRA_ARGS org.apache.kafka.connect.cli.ConnectDistributed "$@"

NB. Make sure that this configuration will not get overridden by an automation tool.

Add axonops user to Kafka user group and Kafka user to axonops group

sudo usermod -aG <your_kafka_group> axonops
sudo usermod -aG axonops <your_kafka_user>

Start/Restart Kafka

To load the AxonOps Java Agent and Kafka config changes please either start the Kafka service if stopped restart the Kafka service if already running.

<Kafka_Home>/bin/kafka-server-stop.sh
<Kafka_Home>/bin/kafka-server-start.sh

Add axonops user to Zookeeper user group and Zookeeper user to axonops group

sudo usermod -aG <your_zookeeper_group> axonops
sudo usermod -aG axonops <your_zookeeper_user>

Start/Restart Zookeeper

To load the AxonOps Java Agent and Zookeeper config changes please either start the Zookeeper service if stopped or restart the Zookeeper service if already running.

<Zookeeper_Home>/bin/zookeeper-server-stop.sh
<Zookeeper_Home>/bin/zookeeper-server-start.sh

Add axonops user to KRaft Broker user group and KRaft Broker user to axonops group

sudo usermod -aG <your_kraft_group> axonops
sudo usermod -aG axonops <your_kraft_user>

Start/Restart KRaft Broker

To load the AxonOps Java Agent and Kafka KRaft config changes please either start the Kafka KRaft service if stopped or restart the Kafka KRaft service if already running.

<Kafka_Home>/bin/kafka-server-stop.sh
<Kafka_Home>/bin/kafka-server-start.sh

Add axonops user to KRaft Controller user group and KRaft Controller user to axonops group

sudo usermod -aG <your_kraft_group> axonops
sudo usermod -aG axonops <your_kraft_user>

Start/Restart KRaft Controller

To load the AxonOps Java Agent and Kafka KRaft config changes please either start the Kafka KRaft service if stopped or restart the Kafka KRaft service if already running.

<Kafka_Home>/bin/kafka-server-stop.sh
<Kafka_Home>/bin/kafka-server-start.sh

Add axonops user to Kafka Connect user group and Kafka Connect user to axonops group

sudo usermod -aG <your_connect_group> axonops
sudo usermod -aG axonops <your_connect_user>

Start/Restart Kafka Connect

To load the AxonOps Java Agent and Kafka Connect config changes please either: * Start the Kafka Connect service if stopped. * Restart the Kafka Connect service if already running.

<Kafka_Home>/bin/kafka-server-stop.sh
<Kafka_Home>/bin/connect-distributed.sh

Start the AxonOps Agent

sudo systemctl start axon-agent