docker/dtr remove

Estimated reading time: 1 minute

Remove a DTR replica from a cluster

Usage

docker run -it --rm docker/dtr \
    remove [command options]

Description

This command gracefully scales down your DTR cluster by removing exactly one replica. All other replicas must be healthy and will remain healthy after this operation.

Options

Option Environment Variable Description
--debug $DEBUG Enable debug mode for additional logs.
--existing-replica-id $DTR_REPLICA_ID The ID of an existing DTR replica. To add, remove or modify DTR, you must connect to an existing healthy replica’s database.
--help-extended $DTR_EXTENDED_HELP Display extended help text for a given command.
--replica-id $DTR_REMOVE_REPLICA_ID DEPRECATED Alias for --replica-ids.
--replica-ids $DTR_REMOVE_REPLICA_IDS A comma separated list of IDs of replicas to remove from the cluster.
--ucp-ca $UCP_CA Use a PEM-encoded TLS CA certificate for UCP. Download the UCP TLS CA certificate from https://<ucp-url>/ca, and use --ucp-ca "$(cat ca.pem)".
--ucp-insecure-tls $UCP_INSECURE_TLS Disable TLS verification for UCP. The installation uses TLS but always trusts the TLS certificate used by UCP, which can lead to MITM (man-in-the-middle) attacks. For production deployments, use --ucp-ca "$(cat ca.pem)" instead.
--ucp-password $UCP_PASSWORD The UCP administrator password.
--ucp-url $UCP_URL The UCP URL including domain and port.
--ucp-username $UCP_USERNAME The UCP administrator username.
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