def _configure_cgroup(self, name):
"""Configure the control group associated with a container.
+ By default the cpuset cgroup is using exclusive CPU/MEM. When Docker
+ container is initialized a new cgroup /docker or /lxc is created under
+ cpuset parent tree. This newly created cgroup is inheriting parent
+ setting for cpu/mem exclusive parameter and thus cannot be overriden
+ within /docker or /lxc cgroup. This patch is supposed to set cpu/mem
+ exclusive parameter for both parent and subgroup.
+
:param name: Name of cgroup.
:type name: str
:raises RuntimeError: If applying cgroup settings via cgset failed.
"""
+ ret, _, _ = self.container.ssh.exec_command_sudo(
+ 'cgset -r cpuset.cpu_exclusive=0 /')
+ if int(ret) != 0:
+ raise RuntimeError('Failed to apply cgroup settings.')
+
+ ret, _, _ = self.container.ssh.exec_command_sudo(
+ 'cgset -r cpuset.mem_exclusive=0 /')
+ if int(ret) != 0:
+ raise RuntimeError('Failed to apply cgroup settings.')
+
ret, _, _ = self.container.ssh.exec_command_sudo(
'cgcreate -g cpuset:/{name}'.format(name=name))
if int(ret) != 0: