Preparation¶

Platform Preparation¶

• Kubernetes container platform version 1.18 or higher

• CoreDNS must be deployed

• For high availability, kernel-devel consistent with the currently running Kernel version should be installed. You can run the following command to check:

  uname -r
  3.10.0-1160.el7.x86_64
  yum list installed |grep kernel
  kernel.x86_64                        3.10.0-1160.el7                @anaconda   
  kernel-tools.x86_64                  3.10.0-1160.el7                @anaconda   
  kernel-tools-libs.x86_64             3.10.0-1160.el7                @anaconda  
  

  If inconsistent, install kernel-devel with the following command:

  yum install -y kernel-devel-$(uname -r)
  

• If LVM2 is not installed, please refer to the appropriate installation method below:

yum install -y lvm2

apt-get install -y lvm2
apt-get install -y linux-headers-$(uname -r)

Supported Operating Systems¶

Secure Boot¶

The high availability feature does not currently support Secure Boot. Please ensure that Secure Boot is in a disabled state.

$ mokutil --sb-state
SecureBoot disabled

$ dmesg | grep secureboot
[    0.000000] secureboot: Secure boot disabled

Disk Types¶

HwameiStor supports physical hard disk drives (HDD), solid-state drives (SSD), and NVMe flash drives.

In a test environment, each host must have at least one free 10GiB data disk.

In a production environment, it is recommended that each host have at least one free 200GiB data disk, and it is recommended to use a solid-state drive (SSD).

Network Planning¶

In a production environment, after enabling high availability mode, it is recommended to use 10 Gigabit TCP/IP network with redundancy protection. The network can be planned in advance by specifying the network card IP through modifying the network card.

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