mirantis/dtr backup¶

Create a backup of MSR

Usage¶

docker run -i --rm mirantis/dtr \
    backup [command options] > backup.tar

Example Commands¶

Basic¶

docker run -i --rm --log-driver none mirantis/dtr:2.9.12 \
    backup --ucp-ca "$(cat ca.pem)" --existing-replica-id 5eb9459a7832 > backup.tar

Advanced (with chained commands)¶

The following command has been tested on Linux:

DTR_VERSION=$(docker container inspect $(docker container ps -f \
  name=dtr-registry -q) | grep -m1 -Po '(?<=DTR_VERSION=)\d.\d.\d'); \
REPLICA_ID=$(docker inspect -f '{{.Name}}' $(docker ps -q -f name=dtr-rethink) | cut -f 3 -d '-'); \
read -p 'ucp-url (The MKE URL including domain and port): ' UCP_URL; \
read -p 'ucp-username (The MKE administrator username): ' UCP_ADMIN; \
read -sp 'ucp password: ' UCP_PASSWORD; \
docker run --log-driver none -i --rm \
  --env UCP_PASSWORD=$UCP_PASSWORD \
  mirantis/dtr:$DTR_VERSION backup \
  --ucp-username $UCP_ADMIN \
  --ucp-url $UCP_URL \
  --ucp-ca "$(curl https://${UCP_URL}/ca)" \
  --existing-replica-id $REPLICA_ID > \
  dtr-metadata-${DTR_VERSION}-backup-$(date +%Y%m%d-%H_%M_%S).tar

Description¶

This command creates a tar file with the contents of the volumes used by MSR, and prints it. You can then use mirantis/dtr restore to restore the data from an existing backup.

Note

This command only creates backups of configurations, and image metadata. It does not back up users and organizations. Users and organizations can be backed up during a MKE backup.

It also does not back up Docker images stored in your registry. You should implement a separate backup policy for the Docker images stored in your registry, taking into consideration whether your MSR installation is configured to store images on the filesystem or is using a cloud provider.
This backup contains sensitive information and should be stored securely.
Using the --offline-backup flag temporarily shuts down the RethinkDB container. Take the replica out of your load balancer to avoid downtime.

Options¶

Option	Environment variable	Description
`--debug`	$DEBUG	Enable debug mode for additional logs.
`--existing-replica-id`	$MSR_REPLICA_ID	The ID of an existing MSR replica. To add, remove or modify a MSR replica, you must connect to an existing healthy replica’s database.
`--help-extended`	$$MSR_EXTENDED_HELP	Display extended help text for a given command.
`--ignore-events-table`	MSR_IGNORE_EVENTS_TABLE	Option to prevent backup of the events table for online backups, to reduce backup size (the option is not available for offline backups).
`--nocolor`	$NOCOLOR	Disable output coloring in logs.
`--offline-backup`	$MSR_OFFLINE_BACKUP	This flag takes RethinkDB down during backup and takes a more reliable backup. If you back up MSR with this flag, RethinkDB will go down during backup. However, offline backups are guaranteed to be more consistent than online backups.
`--ucp-ca`	$UCP_CA	Use a PEM-encoded TLS CA certificate for MKE. Download the MKE TLS CA certificate from `https://<mke-url>/ca`, and `use --ucp-ca "$(cat ca.pem)"`.
`--ucp-insecure-tls`	$UCP_INSECURE_TLS	Disable TLS verification for MKE. The installation uses TLS but always trusts the TLS certificate used by MKE, which can lead to MITM (man-in-the-middle) attacks. For production deployments, use `--ucp-ca "$(cat ca.pem)"` instead.
`--ucp-password`	$UCP_PASSWORD	The MKE administrator password.
`--ucp-url`	$UCP_URL	The MKE URL including domain and port.
`--ucp-username`	$UCP_USERNAME	The MKE administrator username.