docker/dtr restore

Estimated reading time: 3 minutes

Create a new DTR cluster from an existing backup

Usage

docker run -i --rm docker/dtr \
    restore [command options] < backup.tar

Description

This command performs a fresh installation of DTR, and reconfigures it with configuration data from a tar file generated by the ‘backup’ command. The command starts by installing DTR, restores the configurations stored on etcd, and then restores the repository metadata stored on RethinkDB.

This command does not restore Docker images. You should implement a separate restore procedure for the Docker images stored in your registry, taking in consideration whether your DTR installation is configured to store images on the filesystem or using a cloud provider.

After restoring DTR, you can add more nodes to the DTR cluster with the ‘join’ command.

Options

Option Description
--ucp-url Specify the UCP controller URL including domain and port
--ucp-username Specify the UCP admin username
--ucp-password Specify the UCP admin password
--debug Enable debug mode, provides additional logging
--hub-username Specify the Docker Hub username for pulling images
--hub-password Specify the Docker Hub password for pulling images
--http-proxy Set the HTTP proxy for outgoing requests
--https-proxy Set the HTTPS proxy for outgoing requests
--no-proxy Set the list of domains to not proxy to
--replica-http-port Specify the public HTTP port for the DTR replica; 0 means unchanged/default
--replica-https-port Specify the public HTTPS port for the DTR replica; 0 means unchanged/default
--log-protocol The protocol for sending container logs: tcp, tcp+tls, udp or internal. Default: internal
--log-host Endpoint to send logs to, required if –log-protocol is tcp or udp
--log-level Log level for container logs. Default: INFO
--log-tls-ca-cert PEM-encoded TLS CA cert for DTR logging driver. This option is ignored if the address protocol is not tcp+tls.
--log-tls-cert PEM-encoded TLS cert for DTR logging driver. This option is ignored if the address protocol is not tcp+tls.
--log-tls-key PEM-encoded TLS key for DTR logging driver. This option is ignored if the address protocol is not tcp+tls.
--log-tls-skip-verify Configures DTR logging driver’s TLS verification. This verification is enabled by default, but it can be overrided by setting this option to true. This option is ignored if the address protocol is not tcp+tls.
--dtr-external-url Specify the external domain name and port for DTR. If using a load balancer, use its external URL instead.
--enable-pprof Enables pprof profiling of the server
--etcd-heartbeat-interval Set etcd’s frequency (ms) that its leader will notify followers that it is still the leader.
--etcd-election-timeout Set etcd’s timeout (ms) for how long a follower node will go without hearing a heartbeat before attempting to become leader itself.
--etcd-snapshot-count Set etcd’s number of changes before creating a snapshot.
--ucp-insecure-tls Disable TLS verification for UCP
--ucp-ca Use a PEM-encoded TLS CA certificate for UCP
--ucp-node Specify the host to install Docker Trusted Registry
--replica-id Specify the replica ID. Must be unique per replica, leave blank for random
--config-only Backup/restore only the configurations of DTR and not the database
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