Restoring data

Use IBM Spectrum® Discover Red Hat® OpenShift® Container Platform (OCP) single environment to restore the data.

Procedure

Establish a connection to IBM Spectrum Discover Red Hat OpenShift instance where the data is to be restored by a terminal or through ssh, considering the need of a consistent and permanent connection during the migration process as explained in the prerequisites section.
Create conf file and save (data_migration.conf for instance) or make sure that the following environment variables are set:
```
DM_ACTION=<BACKUP|RESTORE>
DM_DATA_PATH=<Absolute path as working directory where the data will be stored (ensure having enough storage)>
DM_TAR_NAME=<Tarball name which will be used to locate backup or restore tarball data
```
The following example demonstrates how to use configuration file content:
```
DM_ACTION=RESTORE
DM_DATA_PATH=/mnt/bludata0/
DM_TAR_NAME=databackup-2022
```
The following example demonstrates how to export the environment variables:
```
$ export DM_ACTION=BACKUP
$ export DM_DATA_PATH=/mnt/bludata0/
$ export DM_TAR_NAME=databackup-2022
```
As mentioned, the configuration file must contain the preceding variables and their values, or you can export those values as environment variables on the same instance where the script resides.
Issue the following commands to start data restore:
In case you set the variables on the environment, do the following steps:
```
curl -s -O https://raw.githubusercontent.com/IBM/ibm-spectrum-discover-resources/2.0.5.2/data_migration.sh
```
In case you set a configuration file with necessary variables (data_migration.conf for instance), do the following steps:
```
curl -s -O https://raw.githubusercontent.com/IBM/ibm-spectrum-discover-resources/2.0.5.2/data_migration.sh
chmod +x data_migration.sh
./data_migration.sh data_migration.conf
```
After the preceding command is issued, you get a message as shown here:
```
Database restored. Data migration complete!
```
Note: Depending on your computer power and number of records, this task might take hours to complete.
After the restoration process is complete, your data is available on the new Red Hat OpenShift IBM Spectrum Discover instance and you can continue using your environment.