Software and Hardware Requirements

Linux OS

• Arm:
  • openEuler 20.3LTS (recommended)
• x86:
  • openEuler 20.3LTS
  • CentOS 7.6
    NOTE:

    You are advised to use the English OS. The current installation package can be installed and used only on the English version.

Linux file system

It is recommended that the number of remaining inodes be greater than 1.5 billion.

Tool

bzip2

Python

• openEuler: Python 3.7.X is supported.
• CentOS: Python 3.6.X is supported.
  NOTE:

  Python needs to be compiled in --enable-shared mode.

Minimum memory

Minimum 32 GB of memory is required for function debugging.

In performance tests and commercial deployment, the single-instance deployment is performed. It is recommended that the memory be greater than 128 GB.

Complex queries require much memory but the memory may be insufficient in high-concurrency scenarios. In this case, it is recommended that a large-memory server or load management be used to restrict concurrences on the system.

CPU

Minimum one 8-core 2.0 GHz CPU is required for function debugging.

In performance tests and commercial deployment, the single-instance deployment is performed. It is recommended that one 16-core 2.0 GHz CPU be used.

You can set CPUs to hyper-threading or non-hyper-threading mode, but ensure the setting is consistent across all the nodes in the cluster.

Hard disk

The disk used for instance installation must meet the following requirements:

• At least 1 GB is used for installing program packages of the instance.
• About 300 MB is used for each host to store metadata.
• More than 70% of available disk space is reserved to store data.

You are advised to configure the system disk to RAID 1 and data disk to RAID 5 and plan four groups of RAID 5 data disks for installing openGauss instances. RAID configuration is not described in this document. You can configure RAID by following instructions in the hardware vendors' manuals or using common methods found on the Internet. Set Disk Cache Policy to Disabled to avoid data loss in an unexpected power-off.

openGauss supports using an SSD with the SAS interface deployed in RAID mode as the primary storage device of the database.

Network requirements

Minimum 300 Mbit/s Ethernet is required.

You are advised to bond two NICs for redundancy. The configuration is not described in this document. You can configure it by following instructions in the manual provided by the hardware manufacturer or using the methods provided on the Internet.

If bonds are configured for the cluster, ensure the consistency among these bond modes, because inconsistent bond modes may cause cluster running exceptions.