User namespace trong Linux kernel.
User namespace
CONFIG_USER_NS:
This allows containers, i.e. vservers, to use user namespaces
to provide different user info for different servers.
When user namespaces are enabled in the kernel it is
recommended that the MEMCG option also be enabled and that
user-space use the memory control groups to limit the amount
of memory a memory unprivileged users can use.
If unsure, say N.
Symbol: USER_NS [=y]
Type : bool
Defined at init/Kconfig:1236
Prompt: User namespace
Depends on: NAMESPACES [=y]
Location:
-> General setup
-> Namespaces support (NAMESPACES [=y])
-> User namespace (USER_NS [=y])PID namespace trong Linux kernel.
PID Namespaces
CONFIG_PID_NS:
Support process id namespaces. This allows having multiple
processes with the same pid as long as they are in different
pid namespaces. This is a building block of containers.
Symbol: PID_NS [=y]
Type : bool
Defined at init/Kconfig:1250
Prompt: PID Namespaces
Depends on: NAMESPACES [=y]
Location:
-> General setup
-> Namespaces support (NAMESPACES [=y])
-> PID Namespaces (PID_NS [=y])Network namespace trong Linux kernel.
Network namespace
CONFIG_NET_NS:
Allow user space to create what appear to be multiple instances
of the network stack.
Symbol: NET_NS [=y]
Type : bool
Defined at init/Kconfig:1258
Prompt: Network namespace
Depends on: NAMESPACES [=y] && NET [=y]
Location:
-> General setup
-> Namespaces support (NAMESPACES [=y])
-> Network namespace (NET_NS [=y])Coi cấu hình Linux kernel hiện tại có biên dịch Linux namespace nào thì xài lệnh dưới
grep _NS= /boot/config-`uname -r`
CONFIG_UTS_NS=y
CONFIG_TIME_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_NET_NS=y