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#The kernel feature that the docker isolation feature relies on is Namespaces.
Docker relies on two kernel features of Linux:
Namespaces: Namespace
Control groups (cgroups): Control group
Namespaces
Namespace provides an isolation of system resources, including file systems, networks, processes, etc. Docker has 5 namespaces:
PID: Process Isolation
NET: Network Management Interface
IPC: Management of Cross-Process Communication Access
MNT: Management Mount point
UTS: Isolated kernel and version identification
Control groups
This is a method provided by the Linux kernel that can limit, record, and isolate The mechanism of physical process groups. He provides the following functions:
Resource Limitation
Priority Setting
Resource Metering
Resource Control
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