hex108

#!/bin/bash

# Get IP for specified host using 'http://ping.eu/ping', then write it to hosts.

if [ $# -ne 1 ]; then
    echo "Usage: $0 host"
    echo "  e.g. # $0 baidu.com"
    exit 0
fi

hex108

#! /bin/sh
tmux attach -t chen || tmux new -s chen

hex108

#!/bin/bash

set -u
set -e

if [ $# -ne 1 ]; then
  echo "Usage: $0 hadoop_home_directory"
  echo "  e.g. $0 /home/test/hadoop-2.4.1"
  exit -1
fi

hex108

#!/bin/bash

set -u
set -e

if [ $# -ne 2 ]; then
  echo "Usage : $0 redis_src_directory port"
  echo "   e.g. $0 /home/test/redis-stable 6379"
  exit -1
fi

hex108

package main

import (
    "flag"
    "fmt"
    "io/ioutil"
    "net/http"
    "encoding/json"
    "strings"
    "container/list"

hex108

通过一些问题引导读者了解、熟悉YARN，主要分为以下几大块：

#1. RM

##调度器 内容：FariScheduler, 调度器性能，SLS，Ganglia， 队列，抢占，调度原理, node label

问题1. 怎么保证用户的最低资源使用量

问题2. 如果集群中有多余的资源，已达到最低资源使用量的用户是否可以使用这些资源，此时如果有别的队列有app请求资源并且该队列没有达到最低资源使用量，如何处理

hex108

Contribution to open source by hex108:

Hadoop

• YARN-4497 RM might fail to restart when recovering apps whose attempts are missing
• YARN-3480 Remove attempts that are beyond max-attempt limit from state store
• YARN-4256 YARN fair scheduler vcores with decimal values
• YARN-4201 AMBlacklist does not work for minicluster
• HADOOP-12388 Fix components' version information in the web page About the Cluster
• YARN-3896 RMNode transitioned from RUNNING to REBOOTED because its response id has not been reset synchronously
• YARN-4057 If ContainersMonitor is not enabled, only print related log info one

hex108

#!/bin/bash

set -u
set -e

run_cmd() {
  echo "$ $@"
  eval "$@"
  if [ $? -ne 0 ] ; then
    echo "Failed to run $@, exiting..."

hex108

#!/bin/bash

set -e
set -u
#set -x

SSH_KEY="05:8b:8f:f5:09:35:ae:61:a9:3b:21:ea:1c:36:bf:0c"
USER_DATA_FILE="$(dirname $0)/vps.userdata"

### sub functions

hex108

Vagrant.configure("2") do |config|
  config.vm.box = "ubuntu/xenial64"

  config.vm.define "node0" do |node0|
	  node0.vm.provision :shell, inline: "hostname node0"
  end

  config.vm.define "node1" do |node1|
 	  node1.vm.provision :shell, inline: "hostname node1"
  end