Docker requires system kernel: 1. Docker runs on "CentOS 7", the system is required to be 64-bit, and the system kernel version is 3.10 or above; 2. Docker runs on "CentOS-6.5" or higher On CentOS, the system is required to be 64-bit and the system kernel version is "2.6.32-431" or higher.
The operating environment of this tutorial: linux7.3 system, docker version 19.03, Dell G3 computer.
What kernel does docker require?
1. CentOS Docker installation
Docker supports the following CentOS versions:
CentOS 7 ( 64-bit)
CentOS 6.5 (64-bit) or higher
2. Prerequisite: Kernel requirements
Currently, CentOS Docker is only supported by kernels in release builds.
Docker runs on CentOS 7, which requires the system to be 64-bit and the system kernel version to be 3.10 or above.
Docker runs on CentOS-6.5 or higher version of CentOS, which requires the system to be 64-bit and the system kernel version to be 2.6.32-431 or higher.
3. View your own kernel
The uname command is used to print current system-related information (kernel version number, hardware architecture, host name and operating system type, etc.).
View the installed CentOS version information (CentOS6.8 has this command, CentOS7 does not have this command)
Recommended learning: "docker video tutorial"
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