Hadoop2启用cgroup

322e

NodeManager启用cgroup资源隔离（Hadoop2.3）
1、准备container-executor.cfg文件

$ cat ${HADOOP_HOME}/etc/hadoop/container-executor.cfg
yarn.nodemanager.linux-container-executor.group=users 注意：'users'来自$ groups 返回的第一个组
从根目录到container-executor.cfg的user全部设为root
2、设置container-executor权限

$ sudo chown root bin/container-executor
$ sudo chmod 6050 bin/container-executor
3、准备cgroup目录

$ sudo mkdir -p /cgroup/cpu
4、yarn-site.xml新增配置：

<property>
    <name>yarn.nodemanager.linux-container-executor.resources-handler.class</name>
    <value>org.apache.hadoop.yarn.server.nodemanager.util.CgroupsLCEResourcesHandler</value>
  </property>
  <property>
    <name>yarn.nodemanager.linux-container-executor.cgroups.mount</name>
    <value>true</value>
  </property>
  <property>
    <name>yarn.nodemanager.container-executor.class</name>
    <value>org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor</value>
  </property>
  <property>
    <name>yarn.nodemanager.linux-container-executor.cgroups.mount-path</name>
    <value>/cgroup</value>
  </property>
  <property>
    <name>yarn.nodemanager.linux-container-executor.nonsecure-mode.local-user</name>
    <value>username</value> # 这里username可以是运行NodeManager的用户
  </property>