• Механизмы контейнеризации: cgroups (сокращение от control groups, контрольные группы)
• Hands on Linux sandbox with namespaces and cgroups

# systemd-cgls
/apache2

# cat /sys/fs/cgroup/system.slice/apache2.service/memory.high

# echo 500 > /sys/fs/cgroup/system.slice/apache2.service/memory.high

# curl 127.0.0.1

# systemctl stop apache2.service

# source /etc/apache2/envvars

# /usr/sbin/apache2 -k start

# csystemd-cgls
/apache2

# ls /sys/fs/cgroup/

# mkdir /sys/fs/cgroup/memory/group0

# echo $$ > /sys/fs/cgroup/memory/group0/tasks

# echo 1M > /sys/fs/cgroup/memory/group0/memory.limit_in_bytes
  или
# echo 512K > /sys/fs/cgroup/memory/group0/memory.limit_in_bytes

# vim anyfile