Oracle Cloud Infrastructure Documentation

Install Management Agents

Download the Agent Software

Perform the following steps to download the agent software:

  1. On the Management Agents home page, click the Downloads and Keys from the left menu to view the Software Download pane.

    The Software Download pane is displayed.

  2. On the Software Download pane, select the operating system that the Management Agent will be installed on from the Download column.

  3. Click the link specific to your operating system to download the agent software file.

    For example, click Agent for WINDOWS (X86_64) for Windows.

Software download page that shows the software download table with links to download the software file.

The software file is now saved on your host.

To verify the file integrity, check if the value of the SHA-256 Checksum column matches the output of the following command: sha256sum <download_file>

Note

The Agent software image download URL is available only via agent-image list CLI command or ListManagamentAgents API with valid OCI authentication. For details, see Download the Agent Software Using CLI.

Download the Agent Software Using CLI

To download Management Agent software using CLI, do the following:
  1. Obtain the object-url value using the agent-image list CLI command. 
    oci management-agent agent-image list --compartment-id <tenancyId>

    The return object-url value is similar to the following:

    https://objectstorage.<region_identifier>.oraclecloud.com/n/<namespace>/b/<bucketName>/o/Linux-x86_64/latest/oracle.mgmt_agent.rpm

    From the above, make a note of the <namespace> and <bucketName> values.

  2. Download the Management Agent software with OCI authenticated principal using the <namespace> and <bucketName> values from Step 1:
    • For Linux: 
      oci os object get --namespace <namespace> --bucket-name <bucketName> --name Linux-x86_64/latest/oracle.mgmt_agent.rpm --file oracle.mgmt_agent.rpm
    • For Windows: 
      oci os object get --namespace <namespace> --bucket-name <bucketName> --name Windows-x86_64/latest/oracle.mgmt_agent.zip --file oracle.mgmt_agent.zip
    • For Solaris: 
      oci os object get --namespace <namespace> --bucket-name <bucketName> --name Solaris-Sparc64/latest/oracle.mgmt_agent.zip --file oracle.mgmt_agent.zip

    To verify the file integrity, check if the value of the SHA-256 Checksum column matches the output of the following command: sha256sum <download_file>

Oracle Cloud Infrastructure (OCI) Command Line Interface (CLI) is a command line interface tool. For more information, see Command Line Interface (CLI).

Note

To obtain the object-url value, you can also use the Management Agent API ListManagementAgentImages.

Create Install Key

You need to create an install key before performing the Management Agent installation.

An install key is issued against your identity domain and validates the authenticity of the installation. Ensure you have it created before starting the Management Agent installation process.

To create a key:

  1. On the Management Agents home page, click Download and Keys from the left menu to view the Install Keys pane.

    The Install Keys pane is displayed at the bottom of the page.

  2. On the Install Keys pane, click Create Key to create a key.

  3. Enter the required details in the Create Key window.

    1. In the Key Name field, specify a name to identify the key.

    2. In the Compartment field, select the compartment from the drop-down list. This is the compartment where the agent resource will be created.

    3. In the Maximum Installs field, specify a number that indicates the maximum number of installs that can be associated with the key. Default value is 1000.

    4. In the Valid for field, specify a number that indicates the period the key is valid for. Default value is 1 Week.

    5. The Unlimited checkbox is optional.

      If it's selected, the key can be used for an unlimited number of agent and gateway installations and the key never expires.

      Risks of using unlimited keys: Oracle recommends to keep the life time of an Install Key to a minimum required time and limited number of agents. Ensure that you keep the downloaded key in a secure location to protect confidentiality. If the unlimited install key is compromised, an attacker can install rogue agents in your tenancy. A regular audit of your tenancy's agents can help to mitigate any potential risks associated with unlimited install keys. When an unlimited install key is not needed anymore, make sure to delete it either using the Management Agents Console or CLI.

    Create Key dialog box.

    A new key is created.

The Install Keys pane offers different options available to manage the keys. During a later step, the Download Key to File option is useful to download a file that can be used as a response file template as described in Configure a Response File.

For more information about managing the install keys, see Manage Install Keys.

Note

If you are installing a Management Gateway, you can use the same install key to install Management Gateway and Management Agent. For information about Management Gateway, see Management Gateway.

Configure a Response File

The Management Agent installation script uses a response file to read the agent parameters specific to your environment.

Review Agent Parameters

A response file containing the agent parameters is required when executing the agent setup script.

The following section describes the parameters supported in the response file:

Table 3-1 Response File Parameters

Parameter Name Parameter Type Description
ManagementAgentInstallKey Mandatory Install key required to validate the identity of the domain and the authenticity of the installation.
CredentialWalletPassword Optional Password of the agent wallet when the user provides a custom password for the wallet to store sensitive information.
The password minimum length is 8 characters with the following specifications:
  • At least one lowercase character (a-z)
  • At least one uppercase character (A-Z)
  • At least one digit (0-9)
  • At least one special character from the following list: '!', '@', '#', '%', '^', '&', '*'

All characters from the password must be from the characters defined above. For example, if the password has the $ character as part of the password, it will fail the validity check since $ is not among the special characters listed above.

GatewayServerHost Optional Host name or address of the Management Gateway server or proxy server.

If provided, GatewayServerPort also must be provided.

If the Management Gateway is configured in high availability mode, you must specify the load balancer host name as the GatewayServerHost value. For information, see Configure High Availability for Management Gateway.

GatewayServerPort Optional Port number of the Management Gateway server or proxy server.

If provided, GatewayServerHost also must be provided.

If the Management Gateway is configured in high availability mode, you must specify the load balancer port number as the GatewayServerPort value. For information, see Configure High Availability for Management Gateway.

GatewayServerUser Optional User name, if the Management Gateway server or proxy server requires authentication.

If provided, GatewayServerPassword also must be provided.

GatewayServerPassword Optional Password, if the Management Gateway server or proxy server requires authentication.

If provided, GatewayServerUser also must be provided.

GatewayServerRealm Optional The authentication realm for the proxy server.

If using Management Gateway, this value is not needed.
AgentDisplayName Optional The display name for your agent. If it's left empty, the default value will be set to "Agent (host-name)".
Service.plugin.<plugin_name>.download=true Optional The name of the plug-in that you want to deploy during the agent installation. <plugin_name> is a plug-in supported by the Management Agent service.

For example, if you want to deploy the DataSafe plug-in during the agent installation, it will be: Service.plugin.datasafe.download=true
FreeFormTags = [{"<key1>":"<value1>"}, {"<key2>":"<value2>"}] Optional The tag metadata association if using tags in OCI.

It consists of a key and a value. Key is any name you use to refer to the tag. Value is the value that the user applying the tag adds to the tag key.
DefinedTags = [{"namespace1":{"<key1>":"<value1>"}}, {"namespace2":{"<key2>":"<value2>"}}] Optional The tag metadata association if using tags in OCI. The tag administrator creates and manages all the tags that the users apply to resources. The users should have defined tag policies.

Tag namespace is a container for your tag keys. The tag key is a key within your namespace, you must create tag keys for defined tags in a namespace.

For defined tags, the tag value has a type which it can be either a string or a list of strings. While defining the tag value type, if the type defined was a string then any value can be entered. Whereas, if it was a list of strings, this value has to be one of the strings from that list.
GatewayServerRootCACertOcid Optional This parameter is available starting with Agent version 221019.0021.

When the Agent connects to a Management Gateway of version 221019.0021.1667404647 or above, the connection will be encrypted.

This parameter specifies the OCID of the Root Certificate Authority Certificate to use. Both Agent and Gateway must be in the same compartment.

Create a Response File

Before proceeding, ensure you have reviewed and understood the information provided in Review Agent Parameters.

To install and configure agents, you need to create a response file and execute a script using the newly created response file which will point the agent to the correct OCI region and allow a resource to be created for the agent.

Note

When creating a response file, check the file location and permissions. Ensure the response file has read permissions for mgmt_agent OS user.

To create a response file, use one of the following options:

Option 1: Download a response file template to create a response file

You can download a template file containing the agent parameters which can be saved and used as a response file during the agent installation.

To download a response file template, use the Download Key to File menu option from the Agent Install Keys list.

  • Click Download and Keys from the left menu to open the Agent Install Keys pane. From the list of agent install keys, select the key that you want to download.

  • On the right side of the selected key, click the action menu Action Menu and select Download Key to File.

    A file is downloaded. For more information, see Download Install Key.

When downloading the agent install key to a file, the downloaded file contains the agent parameters, including the value of the specific agent install key.

After downloading the file, you need to customize it according to your environment:
  • Open the file using a text editor, review it and edit the mandatory agent parameters. See Review Agent Parameters.
  • Comment out (add the # symbol at the start of the line) or remove the agent parameters that you don't require for your specific agent configuration.
  • Uncomment (remove the # symbol from the start of the line) the agent parameters that you require for your specific agent configuration and update the agent parameter value if needed.
  • Save the updated response file. For example, it can be saved as input.rsp response file.

Option 2: Create a response file using a text editor

You can create a response file manually using a text editor. For example, you can create a file using your preferred text editor, add the agent parameters required for your agent configuration to the response file and save it. For example, the response file can be saved as input.rsp.

Sample of input.rsp response file:
managementAgentInstallKey = MS4wLHVzLWFzaGJ1cm4tMSxvY2lkMS50ZW5hbmN5
CredentialWalletPassword = Abcdefgh1#

After creating the response file using any of the above options, check the file permissions and ensure it has read permissions for mgmt_agent user (OS user created during the Management Agent installation process).

Install Management Agent

After downloading the agent software and creating an install key, you can proceed with the installation of the management agent to collect data from sources that you want to manage and monitor from Oracle Cloud Infrastructure.

Install Management Agent on Linux (RPM file)

To install the management agent software on Linux using an RPM file, perform the following steps:

  1. Login as a user with sudo privileges.

  2. Install the management agent software.

    Navigate to the directory where you have downloaded the management agent software RPM file and run the following command to install the RPM file: 
    sudo rpm -ivh <rpm_file_name.rpm>

    For example: sudo rpm -ivh oracle.mgmt_agent-<VERSION>.rpm

    The output will look similar to the following: 
    Preparing... ################################# [100%]
Checking pre-requisites

      Checking if any previous agent service exists
      Checking if OS has systemd or initd
      Checking available disk space for agent install
      Checking if /opt/oracle/mgmt_agent directory exists
      Checking if 'mgmt_agent' user exists
      'mgmt_agent' user already exists, the agent will proceed installation without creating a new one.
      Checking Java version
      JAVA_HOME is not set. Trying default path
      Java version: 1.8.0_281 found at /usr/bin/java

Updating / installing...
      1:oracle.mgmt_agent-<VERSION>################################# [100%]
Executing install
      Unpacking software zip
      Copying files to destination dir (/opt/oracle/mgmt_agent)
      Initializing software from template
      Creating 'mgmt_agent' daemon
      Agent Install Logs: /opt/oracle/mgmt_agent/installer-logs/installer-log-0
      Setup agent using input response file (run as any user with 'sudo' privileges)
      Usage:sudo
      /opt/oracle/mgmt_agent/agent_inst/bin/setup.sh opts=[RESPONSE_FILE]
Agent install successful
    The agent installation process does the following:
    • A new user called mgmt_agent is created. This will be the management agent user. If mgmt_agent user already exists, the agent installation process will use it to install the agent software.
    • When mgmt_agent daemon is created, the hard and soft nofile ulimit are set to 5000.
    • All agent files are copied and installed by mgmt_agent user. The agent install base directory is the directory where the agent is installed. The directory is created as part of the agent installation process under /opt/oracle/mgmt_agent directory.
    • By default, the mgmt_agent service is enabled and started automatically after the agent installation.
    Log files from the agent installation are located under /opt/oracle/mgmt_agent/installer-logs directory. To view the log files or any other agent installation files, login as mgmt_agent user running the following:
    sudo -u mgmt_agent sh
  3. Configure the management agent by running the setup.sh script using a response file. 
    sudo /opt/oracle/mgmt_agent/agent_inst/bin/setup.sh opts=<full_path_of_response_file>
    The output will look similar to the following: 
    sudo /opt/oracle/mgmt_agent/agent_inst/bin/setup.sh opts=<response_file_directory>/input.rsp
Executing configure
      Generating communication wallet
      Parsing input response file
      Validating install key
      Generating security artifacts
      Registering management agent
      Configuration Logs: /opt/oracle/mgmt_agent/configure-logs

Agent configuration successful

Starting agent...
Agent started successfully
In future agent can be started by directly running: sudo systemctl start mgmt_agent
Please make sure that you delete input.rsp or store it in a secure location.

For more information about creating response files, see Create a Response File.

Install Management Agent on Linux (ZIP file)

To install the management agent software on Linux using a ZIP file, perform the following steps:

  1. Extract the management agent software.

    Navigate to the directory where you have downloaded the management agent software ZIP file and unzip it to any preferred location.

  2. Login as a user with sudo privileges.

  3. Install and set up the management agent by running the installer.sh script providing a response file. For information about how to create a response file, see Create a Response File.

    Navigate to the directory where you unzipped the management agent software ZIP file and run the following:
    sudo ./installer.sh <full_path_of_response_file>

    For example: sudo ./installer.sh /tmp/input.rsp

    The output will look similar to the following: 
    sudo ./installer.sh <user_home_directory>/input.rsp 
Checking pre-requisites
    Checking if any previous agent service exists
    Checking if OS has systemd or initd
    Checking available disk space for agent install
    Checking if /opt/oracle/mgmt_agent directory exists
    Checking if 'mgmt_agent' user exists
    Checking Java version
        JAVA_HOME is not set or not readable to root
        Trying default path /usr/bin/java
        Java version: 1.8.0_282 found at /usr/bin/java
    Checking agent version

Executing install
    Unpacking software zip
    Copying files to destination dir (/opt/oracle/mgmt_agent)
    Initializing software from template
    Creating 'mgmt_agent'daemon
    Agent Install Logs: /opt/oracle/mgmt_agent/installer-logs/installer.log.0

Agent install successful

Executing configure

    Parsing input response file
    Validating install key
    Generating communication wallet
    Generating security artifacts
    Registering Management Agent

Starting agent...
Agent started successfully


Agent setup completed and the agent is running.
In the future agent can be started by directly running: sudo systemctl start mgmt_agent 

Please make sure that you delete <user_home_directory>/input.rsp or store it in secure location.

    The agent installation process does the following:
    • A new user called mgmt_agent is created. This will be the management agent user. If mgmt_agent user already exists, the agent installation process will use it to install the agent software.
    • When mgmt_agent daemon is created, the hard and soft nofile ulimit are set to 5000.
    • All agent installation files are owned by mgmt_agent user. The agent install base directory is the directory where the agent is installed. The directory is created as part of the agent installation process under /opt/oracle/mgmt_agent directory.
    • By default, the mgmt_agent service is enabled and started automatically after the agent installation.

    Log files from the agent installation are located under /opt/oracle/mgmt_agent/installer-logs directory.

    Log files from the running agent are located under /opt/oracle/mgmt_agent/agent_inst/log.

    To view the log files or any other agent installation files, login as mgmt_agent user running the following:
    sudo -u mgmt_agent sh

Install Management Agent on Windows

To install the management agent software on Windows, perform the following steps:

  1. Extract the management agent software.

    Navigate to the directory where you have downloaded the management agent software ZIP file and unzip it to any preferred location.

  2. Login as an Administrator user and open a Command Prompt window.

  3. Install and configure the management agent by running the install.bat script using a response file. 
    installer.bat <full_path_of_response_file>
    The output will look similar to the following: 
    installer.bat C:\<user_home_directory>\input.rsp
Checking pre-requisites

        Checking if previous agent service exists
        Checking if C:\Oracle\mgmt_agent\agent_inst directory exists
        Checking if C:\Oracle\mgmt_agent\200820.0751 directory exists
        Checking available disk space for agent install
        Checking Java version
                Java version: 1.8.0_281 found at C:\Program Files\Java\jdk1.8.0_281
 
Executing install
        Unpacking software zip
        Copying files to destination dir (C:\Oracle\mgmt_agent)
        Initializing software from template
        Creating mgmt_agent service 

Agent install successful 

Executing configure

        Parsing input response file
        Generating communication wallet
        Validating install key
        Generating security artifacts
        Registering Management Agent

The mgmt_agent service is starting....
The mgmt_agent service was started successfully.


Agent setup completed and the agent is running
In the future agent can be started by directly running: NET START mgmt_agent
Please make sure that you delete C:\<user_home_directory>\input.rsp or store it in secure location.

For more information about creating response files, see Create a Response File.

The agent installation process does the following:
  • A new directory is created as part of the agent installation process: C:\Oracle\mgmt_agent.
  • The agent install base directory is the directory where the agent will be installed. By default, the agent is installed under C:\Oracle directory. This default directory can be changed by setting the AGENT_INSTALL_BASEDIR environment variable before running the install.bat script.

  • Log files from the agent installation are located under C:\Oracle\mgmt_agent\installer-logs directory.

Install Management Agent on Solaris

To install the management agent software on Solaris, perform the following steps:

  1. Extract the management agent software.

    Navigate to the directory where you have downloaded the management agent software ZIP file and unzip it to any preferred location.

  2. Set SUDO_PATH environment variable with the path to sudo. You may use sudo -E option to retain environment variables while running the command as sudo.

    Confirm useradd and groupadd are in your PATH environment variable. For example, if it is at location /sbin/useradd then confirm it's in your path.

    Confirm sudo is in your PATH environment variable. For example, if sudo is at location /usr/bin/sudo then confirm the PATH environment variable has "/usr/bin".

  3. Login as a user with sudo privileges.

  4. Install and configure the management agent by running the installer.sh script using a response file.

    For information about creating response files, see Create a Response File.

    Navigate to the directory where you unzipped the management agent software ZIP file and run the following:
    sudo ./installer.sh <full_path_of_response_file>
    The output will look similar to the following: 
    sudo ./installer.sh <user_home_directory>/input.rsp 
Checking pre-requisites
    Checking if any previous agent service exists
    Checking if OS has systemd or initd
    Checking available disk space for agent install
    Checking if /opt/oracle/mgmt_agent directory exists
    Checking if 'mgmt_agent' user exists
    Checking Java version
        JAVA_HOME is not set or not readable to root
        Trying default path /usr/bin/java
        Java version: 1.8.0_282 found at /usr/bin/java
    Checking agent version

Executing install
    Unpacking software zip
    Copying files to destination dir (/opt/oracle/mgmt_agent)
    Initializing software from template
    Creating 'mgmt_agent'daemon
    Agent Install Logs: /opt/oracle/mgmt_agent/installer-logs/installer.log.0

Agent install successful

Executing configure

    Parsing input response file
    Validating install key
    Generating communication wallet
    Generating security artifacts
    Registering Management Agent

Starting agent...
Agent started successfully


Agent setup completed and the agent is running.
In the future agent can be started by directly running: sudo systemctl start mgmt_agent 

Please make sure that you delete <user_home_directory>/input.rsp or store it in secure location.

    The agent installation process does the following:
    • A new user called mgmt_agent is created. This will be the management agent user. If mgmt_agent user already exists, the agent installation process will use it to install the agent software.
    • When mgmt_agent daemon is created, the hard and soft nofile ulimit are set to 5000.
    • All agent installation files are owned by mgmt_agent user. The agent install base directory is the directory where the agent is installed. The directory is created as part of the agent installation process under /opt/oracle/mgmt_agent directory.
    • By default, the mgmt_agent service is enabled and started automatically after the agent installation.

    Log files from the agent installation are located under /opt/oracle/mgmt_agent/installer-logs directory.

    Log files from the running agent are located under /opt/oracle/mgmt_agent/agent_inst/log.

    To view the log files or any other agent installation files, login as mgmt_agent user running the following:
    sudo -u mgmt_agent sh

Install Multiple Management Agents

Management Agent supports installing multiple Management Agent instances on the same machine to replicate agent-collected data across regions. Each Management Agent is installed pointing to a different OCI region while collecting from the same sources.
Note

Install multiple management agents feature is currently available only on Linux.

Agent Service Identifiers

Agent service identifiers are used to identify an agent service in presence of other agent instances on a given machine in order to avoid confusion. Each management agent service can be installed with a specific identifier which is used to locate and manage that particular agent instance.

If a management agent installation starts without providing a service identifier, a default installation is assumed.

All service identifiers must begin with mgmt_agent- followed by a string that consists only of alphanumeric values, hyphen or underscore as the only allowed characters. For example: 
mgmt_agent-oc1_phx-abc123

To install the management agent with a service identifier, perform the following steps:

  1. Extract the management agent software.

    Navigate to the directory where you have downloaded the management agent software ZIP file and unzip it to any preferred location.

  2. Login as a user with sudo privileges.

  3. Install and set up the management agent by running the installer.sh script using a response file.

    For information about creating response files, see Create a Response File.

    Navigate to the directory where you unzipped the management agent software ZIP file and run the following:
    sudo ./installer.sh <full_path_of_response_file> <service identifier>
    For example: 
    sudo ./installer.sh /tmp/input.rsp mgmt_agent-oc1_phx-abc123
    The output will look similar to the following: 
    sudo ./installer.sh <user_home_directory>/input.rsp mgmt_agent-oc1_phx-abc123
Checking pre-requisites
	Checking if any previous agent service exists
	Checking if OS has systemd or initd
	Checking available disk space for agent install
	Checking if /opt/oracle/mgmt_agent-oc1_phx-abc123 directory exists
	Checking if 'mgmt_agent' user exists
	Checking Java version
		JAVA_HOME is not set or not readable to root
		Trying default path /usr/bin/java
		Java version: 1.8.0_282 found at /usr/bin/java
	Checking agent version

Executing install
	Unpacking software zip
	Copying files to destination dir (/opt/oracle/mgmt_agent-oc1_phx-abc123)
	Initializing software from template
	Checking if JavaScript engine is available to use
	Creating mgmt_agent-oc1_phx-abc123 daemon
	Agent Install Logs: /opt/oracle/mgmt_agent-oc1_phx-abc123/installer-logs/installer.log.0

Agent install successful

Executing configure

	Parsing input response file
	Validating install key
	Generating communication wallet
	Generating security artifacts
	Registering Management Agent

Starting agent...
Agent started successfully


Agent setup completed and the agent is running.
In the future agent can be started by directly running: sudo systemctl start mgmt_agent-oc1_phx-abc123

Please make sure that you delete <user_home_directory>/input.rsp or store it in secure location.
The agent installation process does the following:
  • A new user called mgmt_agent is created. This will be the management agent user. If mgmt_agent user already exists, the agent installation process will use it to install the agent software.
  • A daemon using the service identifier as the name is created.
  • Hard and soft nofile ulimit are set to 5000.
  • All agent installation files are owned by mgmt_agent user. The agent install base directory is the directory where the agent is installed. The directory is created as part of the agent installation process under /opt/oracle/<service-identifier> directory.
  • By default, the <service-identifier> daemon service is enabled and started automatically after the agent installation.
  • All interaction with the agent daemon service, like starting or stopping an agent, can be done using the <service-identifier>. For example: 
    sudo systemctl start <service-identifier>
sudo systemctl stop <service-identifier>

Log files from the agent installation are located under /opt/oracle/<service-identifier>/installer-logs directory.

Log files from the running agent are located under /opt/oracle/<service-identifier>/agent_inst/log.

To view the log files or any other agent installation files, login as mgmt_agent user running the following:
sudo -u mgmt_agent sh

Verify the Management Agent Installation

Verify the Agent Installation Using User Interface

To verify the agent installation using the user interface, perform the following steps:

  1. On the main Management Agents page, click Agents from the left menu.

    The Agents page is displayed with a list of all agents and gateway installed.

    To see only the agents, you can use the Filters section from the left menu:

    Go to Filters, use the Install Type dropdown list and select Agent.

    All the agents are displayed.

    Agents list page that shows all the management agents installed.

  2. From the Agents list, look for the agent that was recently installed using the Created column which displays the date of the agent installation or the Host column which displays the host name where the agent was installed.

Verify the Agent Installation Using Command Line Interface

Verify the Agent Installation Using Command Line Interface on Linux

  1. Login to the host using a user with sudo privileges.

  2. Run the following command:

    For Oracle Linux 6:
    sudo /sbin/initctl status mgmt_agent
    For Oracle Linux 7: 
    sudo systemctl status mgmt_agent

    For more details, check log file: /opt/oracle/mgmt_agent/agent_inst/log/mgmt_agent.log.

Verify the Agent Installation Using Command Line Interface on Windows

  1. Login to the host using an Administrator account’s command shell.

  2. Run the following command:
    sc query mgmt_agent

    For more details, check the log file: C:\Oracle\mgmt_agent\agent_inst\log\mgmt_agent.log.

Verify the Agent Installation Using Command Line Interface on Solaris

  1. Login as a user that has sudo privilege to execute commands as root user.

  2. Run the following command: 
    sudo /etc/init.d/mgmt_agent status

    For more details, check log file: /opt/oracle/mgmt_agent/agent_inst/log/mgmt_agent.log.

Troubleshoot Management Agent Installation Issues