Deployment variables for Linux

Below is a table describing the variables used by Wazuh agent packages on Linux endpoints and a few examples of how to use them.

Option

Description

WAZUH_MANAGER

This is the primary Wazuh manager that the Wazuh agent will connect to for ongoing communication and security data exchange. Specifies the Wazuh manager IP address or FQDN (Fully Qualified Domain Name). If you want to specify multiple managers, you can add them separated by commas. See address.

WAZUH_MANAGER_PORT

Specifies the Wazuh manager connection port. See port.

WAZUH_PROTOCOL

Sets the communication protocol between the Wazuh manager and the Wazuh agent. Accepts UDP and TCP. The default is TCP. See protocol.

WAZUH_REGISTRATION_SERVER

Specifies the Wazuh enrollment server, used for the Wazuh agent enrollment. See manager_address. If empty, the value set in WAZUH_MANAGER will be used.

WAZUH_REGISTRATION_PORT

Specifies the port used by the Wazuh enrollment server. See port.

WAZUH_REGISTRATION_PASSWORD

Sets password used to authenticate during enrollment, stored in etc/authd.pass. See authorization_pass_path.

WAZUH_KEEP_ALIVE_INTERVAL

Sets the time between Wazuh agent checks for Wazuh manager connection. See notify_time.

WAZUH_TIME_RECONNECT

Sets the time interval for the Wazuh agent to reconnect with the Wazuh manager when connectivity is lost. See time-reconnect.

WAZUH_REGISTRATION_CA

Host SSL validation need of Certificate of Authority. This option specifies the CA path. See server_ca_path.

WAZUH_REGISTRATION_CERTIFICATE

The SSL agent verification needs a CA signed certificate and the respective key. This option specifies the certificate path. See agent_certificate_path.

WAZUH_REGISTRATION_KEY

Specifies the key path completing the required variables with WAZUH_REGISTRATION_CERTIFICATE for the SSL agent verification process. See agent_key_path.

WAZUH_AGENT_NAME

Designates the Wazuh agent's name. By default, it will be the computer name. See agent_name.

WAZUH_AGENT_GROUP

Assigns the Wazuh agent to one or more existing groups (separated by commas). See agent_groups.

ENROLLMENT_DELAY

Assigns the time that agentd should wait after a successful enrollment. See delay_after_enrollment.

Examples:

  • Enrollment with password:

    # WAZUH_MANAGER="10.0.0.2" WAZUH_REGISTRATION_PASSWORD="TopSecret" \
     WAZUH_AGENT_NAME="yum-agent" yum install wazuh-agent

  • Enrollment with password and assigning a group:

    # WAZUH_MANAGER="10.0.0.2" WAZUH_REGISTRATION_SERVER="10.0.0.2" WAZUH_REGISTRATION_PASSWORD="TopSecret" \
     WAZUH_AGENT_GROUP="my-group" yum install wazuh-agent

  • Enrollment with relative path to CA. It will be searched at your Wazuh installation folder:

    # WAZUH_MANAGER="10.0.0.2" WAZUH_REGISTRATION_SERVER="10.0.0.2" WAZUH_AGENT_NAME="yum-agent" \
     WAZUH_REGISTRATION_CA="rootCA.pem" yum install wazuh-agent

  • Enrollment with protocol:

    # WAZUH_MANAGER="10.0.0.2" WAZUH_REGISTRATION_SERVER="10.0.0.2" WAZUH_AGENT_NAME="yum-agent" \
     WAZUH_PROTOCOL="udp" yum install wazuh-agent

  • Enrollment and adding multiple addresses:

    # WAZUH_MANAGER="10.0.0.2,10.0.0.3" WAZUH_REGISTRATION_SERVER="10.0.0.2" \
     WAZUH_AGENT_NAME="yum-agent" yum install wazuh-agent

  • Absolute paths to CA, certificate, or key that contain spaces can be written as shown below:

    # WAZUH_MANAGER="10.0.0.2" WAZUH_REGISTRATION_SERVER="10.0.0.2" WAZUH_REGISTRATION_KEY="/var/ossec/etc/sslagent.key" \
     WAZUH_REGISTRATION_CERTIFICATE="/var/ossec/etc/sslagent.cert" yum install wazuh-agent

Note

It’s necessary to use both KEY and PEM options to verify Wazuh agents' identities with the enrollment server. See the additional security options section.