Installation Wizard

Extract the Installation Package

tar -zxf halo_1.0.16.x86_64.build260326.tar.gz

Run the Installation Script

[root@halo131 ~]# cd product/		# Enter the installation directory
[root@halo131 product]# ls
dbms  halo_1.0.16_installer  instantclient_21_11  shield
[root@halo131 product]# ./halo_1.0.16_installer 	# Run the interactive installation script

Detailed Configuration Steps

Step 1: Select Language

Enter en (English) or cn (Chinese, default).

Step 2: Select Installation Type

Available components:

• halodb — Install HaloDB database
• etcd — Install etcd key-value store
• clustermgr — Install clustermgr management component
• all — All components

Step 3: Specify Installation Path

The default path is /u01/app/halo. Press Enter to use the default path, or manually enter a custom path.

Step 4: Select Database Role

• Enter m for primary
• Enter s for standby

Step 5: Install Database Dependency Packages

The installation script will automatically install the system dependency packages required for database operation (26 packages in total) and automatically complete the following system configurations:

• Modify SELinux configuration
• Disable firewall
• Modify kernel parameters (semaphores)
• Increase user resource limits

Step 6: Create Database User

Whether to delete the existing user halo:

• Enter yes to delete and recreate
• Enter no or press Enter to keep the existing user

Step 7: Specify Database Directory

Enter the database initialization directory. The default is /data/halo. The directory must be empty and cannot be under / or /root.

Note: The data directory you enter must be empty, otherwise an error will occur.

After the user is created, the script will automatically configure environment variables, create the /var/run/halo process directory, and configure auto-start on boot.

Step 8: Initialize Halo Database

The script will automatically perform the following operations:

• Check database version: pg_ctl -V
• Initialize database: pg_ctl init -D $PGDATA
• Configure database parameters: pg_hba.conf, postgresql.conf

Step 9: Configure Archive Logs

Choose whether to configure archive logs. Enter the archive path. The default path is $PGDATA/archivedir (press Enter to use the default).

Step 10: Copy license.lic

Copy the license file to the database directory.

Step 11: Start Halo Database

The script automatically starts the database service.

Step 12: Compatibility Mode Database Creation

You can choose to create databases with the following compatibility modes:

PostgreSQL Compatibility Mode:

Oracle Compatibility Mode:

Select Oracle mode and enter the port (default 1521, customizable). The database oracle is automatically created, and the following extensions are installed: aux_oracle, querymap, dbms packages, etc.

MySQL Compatibility Mode:

Select MySQL mode and enter the port (default 3307, customizable). Schema and user are automatically created, and the aux_mysql extension is installed.

All Compatibility Modes:

All the above compatibility modes can be installed simultaneously.

Step 13: Configure Huge Pages (Optional)

When system memory is >= 32GB, you can configure huge pages to improve performance:

• Modify the vm.nr_hugepages parameter
• Enable huge_pages = on
• Restart the database

View Environment Variable Configuration

After installation is complete, you can view the halo user's environment variables:

cat /home/halo/.bash_profile