再提供一个hdfs dfsadmin全量命令测试脚本

下面是一个HDFS `dfsadmin` 全量命令测试脚本的示例：

#!/bin/bash

# Set variables
HDFS_USER=hdfs
HDFS_COMMAND=/usr/local/hadoop/bin/hdfs
NAMENODE_HOST=localhost

# Check if HDFS is running
$HDFS_COMMAND dfsadmin -report >/dev/null 2>&1
if [ $? -eq 0 ]; then
  echo "HDFS is running"
else
  echo "HDFS is not running"
  exit 1
fi

# Check if HDFS user has permissions
su $HDFS_USER -c "$HDFS_COMMAND dfsadmin -report" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  echo "HDFS user has permissions"
else
  echo "HDFS user does not have permissions"
  exit 1
fi

# Check if namenode is active
$HDFS_COMMAND dfsadmin -report | grep -A1 "Name:" | grep "$NAMENODE_HOST:8020" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  echo "Namenode is active"
else
  echo "Namenode is not active"
  exit 1
fi

# Check if all datanodes are active
$HDFS_COMMAND dfsadmin -report | grep "Datanodes available:" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  echo "All datanodes are active"
else
  echo "Not all datanodes are active"
  exit 1
fi

# Check if all blocks are replicated
$HDFS_COMMAND dfsadmin -report | grep "Under replicated blocks:" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  echo "All blocks are replicated"
else
  echo "Not all blocks are replicated"
  exit 1
fi

echo "HDFS is healthy"
exit 0

这个脚本将检查HDFS是否正在运行，HDFS用户是否有权限，namenode是否处于活动状态，所有datanode是否处于活动状态以及所有块是否被复制。如果所有检查都通过，脚本将输出"HDFS is healthy"，否则将输出错误消息并退出。