Backing Up and Restoring with ClickHouse Tools (Command Line)
What is the ClickHouse Command Line Tool?
The ClickHouse command line tool is a set of command-line interfaces for managing and maintaining the ClickHouse database, used to perform various operations such as backup, restore, and table splitting.
Installing the ClickHouse Command Line Tool
To use the ClickHouse command line tool, you need to install ClickHouse. The installation command is as follows:
sudo yum install -y clickhouse-clientAlternatively, in a Debian system:
sudo apt-get install -y clickhouse-clientBacking Up Data
Using the clickhouse-client Command for Backup
You can use the following command to back up the ClickHouse database:
clickhouse-client --host --port -u -p
--database backup /path/to/backup/directory For example:
clickhouse-client --host localhost --port 9000 -u root -p password123 --database mydb backup /var/backups/mydbRestoring Data
Using the clickhouse-client Command for Restore
You can use the following command to restore the ClickHouse database:
clickhouse-client --host --port -u -p
--database restore /path/to/backup/directory For example:
clickhouse-client --host localhost --port 9000 -u root -p password123 --database mydb restore /var/backups/mydbTable Splitting Operations
You can use the following command to perform table splitting operations:
clickhouse-client --host --port -u -p
--database split_table For example:
clickhouse-client --host localhost --port 9000 -u root -p password123 --database mydb split_table users 10000Summary
Backing up and restoring data using the ClickHouse command line tool is very convenient. With these commands, you can easily back up and restore data, and perform table splitting operations as needed.