Preparation¶

Platform Preparation¶

• Kubernetes compatibility:

  kubernetes	v0.4.3	>=v0.5.0	>= 0.13.0
  >=1.18&&<=1.20	Yes	No	No
  1.21	Yes	Yes	No
  1.22	Yes	Yes	No
  1.23	Yes	Yes	No
  1.24	Yes	Yes	Yes
  1.25	No	Yes	Yes
  1.26	No	Yes	Yes
  1.27	No	No	Yes
  1.28	No	No	Yes

• 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.

Comments