Setting up storage on a separate disk

By default, all data is stored in the /var section.

For example you have a separate drive connected to /storage.

1. Work from the root user

   sudo su

2. Stop the recievers and DB

   fastor-stop
   fastor-db-stop

3. Create directories in the /storage section

   mkdir /storage/qoestor
   mkdir /storage/qoestor/clickhouse
   mkdir /storage/qoestor/clickhouse-hot
   mkdir /storage/qoestor/clickhouse-cold
   mkdir /storage/qoestor/dump

4. Copy tha data on the new drive

   cp -r /var/lib/clickhouse/* /storage/qoestor/clickhouse
   cp -r /var/lib/clickhouse-hot/* /storage/qoestor/clickhouse-hot
   cp -r /var/lib/clickhouse-cold/* /storage/qoestor/clickhouse-cold
   cp -r /var/qoestor/backend/dump/* /storage/qoestor/dump

5. Change the folder owner /storage/qoestor/clickhouse

   chown -R clickhouse:clickhouse /storage/qoestor/clickhouse
   chown -R clickhouse:clickhouse /storage/qoestor/clickhouse-hot
   chown -R clickhouse:clickhouse /storage/qoestor/clickhouse-cold

6. Delete the old directories

   rm -rf /var/lib/clickhouse
   rm -rf /var/lib/clickhouse-hot
   rm -rf /var/lib/clickhouse-cold
   rm -rf /var/qoestor/backend/dump

7. Create simlinks

   ln -s /storage/qoestor/clickhouse /var/lib/clickhouse
   ln -s /storage/qoestor/clickhouse-hot /var/lib/clickhouse-hot
   ln -s /storage/qoestor/clickhouse-cold /var/lib/clickhouse-cold
   ln -s /storage/qoestor/dump /var/qoestor/backend/dump

8. Check the links

   readlink -f /var/lib/clickhouse
   readlink -f /var/lib/clickhouse-hot
   readlink -f /var/lib/clickhouse-cold
   readlink -f /var/qoestor/backend/dump

9. Start the DB

   fastor-db-restart

10. Start the recievers

    fastor-restart