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# Installing the ArcMC Agent

The ArcMC Agent runs on managed hosts and enables their management by ArcMC. Whether you need to install the ArcMC on a managed host depends on the host’s form factor, which is summarized in the table and explained in detail below.

Host Type | ArcMC Agent Required? | Agent Installation
--- | --- | ---
ArcMC, Logger, or Connector Appliance hardware form factor (all versions) | Yes | Automatically performed when adding host.
Software Connector Appliance (all versions) | Yes | Manual installation required; perform before adding host.
Software Logger (before version 6.0) | Yes | Manual installation required; perform before adding host.
Software Logger (version 6.0 or later) | Yes | Automatically performed when adding host.
Software ArcMC (before version 2.1) | Yes | Manual installation required; perform before adding host.
Software ArcMC (version 2.1 or later) | Yes | Automatically performed when adding host.
Connector (any) | No | None. ArcMC Agent is not required.
Collector (any) | No. | None. ArcMC Agent is not required.
Transformation Hub | No | None. ArcMC Agent is not required.

## Automatic Installation

The ArcMC Agent is automatically installed when adding any of the following host types to ArcMC:

- Any hardware appliance (ArcSight Management Center Appliance, Connector Appliance, or Logger Appliance)
- Software Logger 6.0 or later
- Software ArcMC 2.1 or later

As part of the Add Host process, ArcMC automatically pushes the ArcMC Agent installer to the added host, installs the Agent, then starts the service. The host is then ready to manage in ArcSight Management Center. You will not need to take any manual installation steps. For more information about the Add Host process, see About Adding a Host.

Note: Perl is required for the automatic installation of the ArcMC Agent. Ensure that Perl is installed on the host prior to attempting to add the host to ArcMC.

## Manual Installation

You must perform a manual installation of the ArcMC Agent on any of these host types prior to adding them to ArcMC for management:

- Software ArcSight Management Center (before version 2.1)
- Software Logger (before version 6.0)
- Software Connector Appliance (all versions)

An ArcMC used to manage products must have an Agent installed with the same version number as the ArcMC. For example, if your ArcMC 3.1.0 will be used to manage products, then the ArcMC Agent running on that ArcMC must also be version 3.1.0.

To manually install the ArcMC Agent:

1. In the directory to where you transferred the installer, run these 2 commands:

- `chmod +x ArcSight-ArcMCAgent-.<agent_installer_build_number>.0.bin`

- `./ArcSight-ArcMCAgent-.<agent_installer_build_number>.0.bin LAX_VM <install_dir>/current/local/jre/bin/java`

  where `<agent_installer_build_number>`is the build number of the latest installer and <install_dir> is the installation directory of the software product.

The installation wizard starts.

1. Review the dialog box, then click Next. The required installation path is the install directory (that is, the same directory where Software Connector Appliance or Software Logger is installed).

2. Follow the prompts to complete the installation. The ArcMC Agent is automatically started upon completion of the installation process.

   Note: If the ArcMC Agent fails to install on the localhost, localhost management will not be enabled. To verify correct installation of the Agent, check on the Hosts tab under Issues. Follow the instructions shown in the tooltip to install the Agent properly and resolve any issues shown.

## Connectors and Transformation Hub

Connectors and Transformation Hub do not require the installation of the ArcMC Agent in order to be managed by ArcMC.