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15.2. Administering the Manager Virtual Machine

The hosted-engine utility provides many commands to help administer the Manager virtual machine. You can run hosted-engine on any self-hosted engine node. To see all available commands, run hosted-engine --help. For additional information on a specific command, run hosted-engine --command --help.

15.2.1. Updating the Self-Hosted Engine Configuration
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To update the self-hosted engine configuration, use the hosted-engine --set-shared-config command. This command updates the self-hosted engine configuration on the shared storage domain after the initial deployment.

To see the current configuration values, use the hosted-engine --get-shared-config command.

To see a list of all available configuration keys and their corresponding types, enter the following command: 

# hosted-engine --set-shared-config key --type=type --help
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Where type is one of the following:

he_local

Sets values in the local instance of etc/ovirt-hosted-engine/hosted-engine.conf on the local host, so only that host uses the new values. To enable the new value, restart the ovirt-ha-agent and ovirt-ha-broker services.

he_shared

Sets values in etc/ovirt-hosted-engine/hosted-engine.conf on shared storage, so all hosts that are deployed after a configuration change use these values. To enable the new value on a host, redeploy that host.

ha

Sets values in /var/lib/ovirt-hosted-engine-ha/ha.conf on local storage. New settings take effect immediately.

broker

Sets values in /var/lib/ovirt-hosted-engine-ha/broker.conf on local storage. Restart the ovirt-ha-broker service to enable new settings.

15.2.2. Configuring Email Notifications
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You can configure email notifications using SMTP for any HA state transitions on the self-hosted engine nodes. The keys that can be updated include: smtp-server, smtp-port, source-email, destination-emails, and state_transition.

To configure email notifications:

  1. On a self-hosted engine node, set the smtp-server key to the desired SMTP server address: 

    # hosted-engine --set-shared-config smtp-server smtp.example.com --type=broker
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    Note

    To verify that the self-hosted engine configuration file has been updated, run: 

    # hosted-engine --get-shared-config smtp-server --type=broker
broker : smtp.example.com, type : broker
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  2. Check that the default SMTP port (port 25) has been configured: 

    # hosted-engine --get-shared-config smtp-port --type=broker
broker : 25, type : broker
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  3. Specify an email address you want the SMTP server to use to send out email notifications. Only one address can be specified. 

    # hosted-engine --set-shared-config source-email source@example.com --type=broker
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  4. Specify the destination email address to receive email notifications. To specify multiple email addresses, separate each address by a comma. 

    # hosted-engine --set-shared-config destination-emails destination1@example.com,destination2@example.com --type=broker
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To verify that SMTP has been properly configured for your self-hosted engine environment, change the HA state on a self-hosted engine node and check if email notifications were sent. For example, you can change the HA state by placing HA agents into maintenance mode. See Section 15.1, “Maintaining the Self-Hosted Engine” for more information.

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